Be Cautious of These 3 Furnace Smells | Snyder Air Conditioning, Plumbing, & Electric (2024)

Do you smell an odd scent coming from your furnace? Many homeowners experience furnace odors, but don’t realize the possible hazard. The professionals at Snyder Air Conditioning, Plumbing & Electric are here to help. Here’s what you should know about the most common furnace smells that you must not ignore.

Four furnace smells to pay attention to

While it’s a good idea to pay attention to any unusual odors coming from your furnace, there are four main ones to be aware of, as they may pose serious risks:

  • A sulfur or rotten egg smell could indicate a gas leak, which is a serious health and safety risk.
  • A burning plastic or electrical smell could indicate a malfunctioning or overheating furnace, which could result in a fire.
  • A dusty or moldy smell could indicate a dirty or clogged air filter, which can negatively impact air quality and exacerbate respiratory issues.
  • A metallic or burning oil smell could indicate a problem with the furnace’s oil burner, which could lead to dangerous carbon monoxide emissions.

Regular furnace maintenance and inspections can help detect and address any concerning smells or issues before they become major problems.

Rotten Egg Furnace Smell

The smell of rotten eggs isn’t exactly a pleasant one, but in the case of your furnace, it should make things relatively easy to identify. After all, you’ll be able to tell that your furnace is causing the problem – not another appliance in your home.

In most cases, the rotten egg smell coming from your furnace indicates that you have a gas leak. This is the case because most gas companies scent their gas with a discernible smell to let technicians and residents know that they could have a leak since gas is unscented on its own.

The problem with the rotten egg smell in your home is that it could cause an explosion or fire in your house since you have gas in the air. If you’re near the furnace, go ahead and turn it off as soon as possible and open up windows to allow clean air flow.

Next, you need to leave your home and call the gas company for service. They may need to turn your gas off before your furnace can be fixed since it’s dangerous to work in an area with a gas leak.

Electrical Furnace Smells or Metallic Furnace Smells

Electrical smells and metallic smells are generally pretty distinct for the average homeowner since they don’t occur too frequently. In some cases, these smells will be a bit like burning wires, though they generally have a slightly different odor.

Electrical smells coming from your furnace often indicate certain components on the inside are getting too hot. If electrical smells come with a furnace that randomly shuts itself off, it’s likely a protective mechanism that won’t allow the furnace to run anymore and you’ll need to call for service immediately to use it.

Mechanical smells in your furnace may also indicate that certain parts on the inside that are made of rubber or metal are actually burning due to old age and general wear and tear. These parts will need to be replaced, but this is generally a minor repair that won’t cost you too much money.

If you notice electrical smells or metallic smells coming from your furnace, you need to shut it off immediately and not continue running it, even if it’s cold outside and in your home. Call your service provider for a repair as soon as you can, and once the furnace has been fixed, monitor it closely for a day or two to make sure the smell is gone.

Dusty Burning Furnace Smells

The smell of burning dust inside your furnace is one of the most common odors you’ll come across. In fact, most homeowners who have a furnace problem report this smell at one point or another.

In most cases, the dusty burning smell coming from your furnace is not unusual. If you’re just turning it on for the first time, chances are the furnace is actually burning away any dirt and dust that accumulates inside. This is very normal and you will generally notice that the smell goes away within a few hours.

However, if the dusty burning smell from the furnace doesn’t dissipate quickly after turning your furnace on for the first time of the season, there are some things you can do on your own to try and fix it. The first is making sure the air filter in your furnace is clean and up to date. If you’re not sure, your best bet is to replace the air filter and make note of when you replaced it so you can do it as frequently as suggested by your furnace manufacturer or technician.

If time doesn’t get rid of the dusty burning smell and replacing your air filter doesn’t either, you need to make a call for service. It could be a serious problem with your unit or you could simply need a deep cleaning that you won’t be able to take care of on your own.

What to do if you smell strange odors coming from your furnace

Homeowners must understand burning smells from heaters. It could mean dust is burning, electric burning, or parts of the heater are burning. Identifying the source of the smell is important.

These routine maintenance tips can help:

  • Change furnace filters
  • Check heat exchangers and burners
  • Inspect ductwork

Professional HVAC services can also help. If the burning smell continues or gets worse, turn off the furnace and call a professional service in Fernandina Beach, Florida. Don’t ignore a burning smell from heaters. Take caution for safety.

Common Causes of Burning Smell in Heaters

Here are some common causes of a burning smell in your heater. Take action quickly so you avoid costly repairs or even fires:

  • Burning dust or debris
  • Overheating motor
  • Faulty wiring
  • Frayed electrical cords
  • Faulty heating elements

Dust Build-Up on Components

Dust that has gather on furnace components can cause a burning smell. This is a sign that something is wrong. Dirt and debris collecting on the evaporator coils and heat exchangers can lead to overheating. This smell can come from other places, so it can be hard to locate the source. A pro can inspect and clean the furnace. This prevents dust build-up and keeps the furnace working correctly.

To reduce dirt and dust, the furnace filter should be changed frequently. Humidity levels should be maintained and the home should be kept clean. A clean furnace not only makes the home smell better, but also reduces fire risks and energy use.

Address any burning smells from the furnace right away to avoid damages or dangerous situations.

Clogged or Old Air Filters

Clogged or old air filters can cause a burning smell in heaters. The filters trap dirt, dust and other debris, that can accumulate. This leads to reduced airflow and overheating of the furnace’s components. The electrical burning smell is often accompanied by a humming noise.

Inspect and replace furnace filters regularly to avoid these issues. Proper maintenance and cleaning of the furnace can help too. If you smell burning, turn off the heater and get professional help.

Regular maintenance and filter replacement can prevent issues and prolong furnace life.

Mold and Mildew Growth in Ductwork

Mold and mildew in ductwork can cause health issues, like allergies, asthma, and breathing trouble. If not taken care of, it could damage your HVAC and raise energy bills. Professional services are the best way to keep it from growing.

If you smell burning from your furnace/ducts, that could signal mold growth. Address this ASAP and call a professional for inspection and repair.

Prevention is key! Remember to schedule regular inspections and cleanings for your HVAC.

Foreign Objects Lodged in Vents or Ducts

Foreign objects stuck in vents or ducts can cause a burning smell. This is risky for your web server and hardware. Check your vents and ducts often. Look for dust, debris, or even small animals. These things can block your system, causing it to overheat. Potential hardware failure or fires may happen.

To prevent this, you should get your vents cleaned by a pro regularly. Air filters or air purifiers can help reduce dust and debris from entering your system.

  • Don’t ignore burning smells from your web server or hardware. Maintenance and cleaning can help you avoid disasters.

Electrical Wiring Issues

Electrical wiring problems can be a real nuisance. From flickering lights to blown circuits, there are various signs that your system needs attention. So, be sure to act quickly and carefully.

A burning smell is one of the most frequent electrical warning signs. If you detect burning or smoke coming from an outlet or appliance, immediately turn off the power and call a licensed electrician.

More alerting signs include buzzing or humming sounds, regular power surges, tripped circuits, and flickering lights. These may originate from faulty wiring, overloaded circuits, or outdated electrical systems. To avoid further damage or fire risks, get your system inspected and fixed by an expert.

Regular maintenance and check-ups can stop electrical issues and protect your home and family. Don’t wait to call a licensed electrician if you think something’s wrong.

How to Handle Burning Smell from Heaters

Burning smells from heaters can be worrying. Knowing how to deal with them is important. It stops potential damage and keeps your home safe. Here are our top tips on identifying and handling burning smells from heaters.

Allowing the Heater to Operate for Ten Minutes

Turn the heater on for ten minutes before switching it off. This helps to reduce the smell that comes from burning dust, hair, and other particles inside the unit when it’s not in use. Burning off this debris avoids the unpleasant odor when you switch it on again.

Regular maintenance is essential, like cleaning and changing filters to stop the build-up of debris and keep the heater working well. If the smell persists or gets worse, get a professional to inspect it. That way, you can prevent any potential fires or hazards.

Regularly Replace Air Filters

Replacing air filters in your HVAC system is a must. It helps maintain processing power and stops overheating. This can stop costly repairs or replacements. A clogged filter stops the airflow and reduces efficiency, meaning it works harder for longer. This puts strain on the system’s parts, reducing their lifespan.

Every three months, or more often if you have pets or allergies, replace the filter. This improves airflow and indoor air quality, as well as saving energy and money. Plus, filter replacements are affordable and easy to get. Not replacing the filter can lead to bad smells, like burning dust or hair, and potentially harmful pollutants and allergens in your home.

Set reminders to replace the air filter. This will keep your HVAC system running smoothly.

Cleaning the Heater and Ductwork

Regular cleaning of the heater and ductwork is crucial! Dust, debris and other contaminants can lead to health issues such as asthma, allergies and respiratory problems. A malfunctioning heating system can also emit burning smells, like burnt dust or plastic. So inspect and clean the furnace, air filters, vents and ducts.

DIY methods include vacuuming dust, cleaning filters and wiping down the furnace and ducts. But it’s best to hire a professional HVAC technician once a year. This ensures the heating system works efficiently, saves energy and provides clean, healthy air.

Pro tip: Use high-efficiency air filters and change them regularly to reduce dust and contaminants in the air.

Removing Foreign Objects from Vents or Ducts

It is essential to take out foreign objects from vents and ducts. These can include dirt, dust, debris and even small animals. If not removed, they can clog up the vents or ducts. This makes the HVAC system work harder and increases energy bills.

Turn off the HVAC system before getting started. Use a vacuum or brush to take out any debris blocking the vent or duct. If there are signs of damage or leaks, contact a professional HVAC technician from Snyder immediately.

Put in air filters and get regular maintenance for the HVAC system to stop foreign objects entering the vents or ducts.

Immediate Attention for Electrical Wiring Issues

Attention to electrical wiring must be immediate. This is because potential risks like electrical fires, shocks, and damage to electronics can arise. Signs of faulty wiring include flickering lights, circuit breakers that often trip, burning smells, and unworking outlets. It is important to take care of these issues quickly. Call a professional electrician from Snyder immediately if you have electrical problems. Not taking care of electrical wiring could lead to serious issues, not just for your home, but also for you and your property.

Having a professional from Snyder inspect and maintain your home’s electrical system can help prevent these issues. Pro tip: Get a fire extinguisher and smoke detectors for extra safety.

Importance of Routine Maintenance

Routine maintenance is essential for any device, especially HVAC systems. Maintenance stops small problems from becoming big ones. Also, it can help you save money on costly repairs.

Annual Furnace Inspection

It’s vital to have an annual furnace inspection. A trained technician from Snyder Air Conditioning, Plumbing & Electric will check for signs of wear, leaks, and malfunctions.

But don’t forget about maintenance! Three smells could mean danger. A burning smell, like burned hair or plastic, can signal a short circuit. A metallic smell suggests a cracked heat exchanger, which can cause carbon monoxide poisoning. Finally, a rotten egg smell could be a gas leak—an immediate safety hazard.

Don’t overlook the importance of regular furnace inspection. Be aware of any odd smells. It could save expensive repairs, keep you safe, and extend your furnace’s life.

Regular Replacement of Air Filters

Replace your air filters regularly! Dirty filters can lead to poor air quality and damage to your furnace. If you smell something unusual, like a burning or metallic odor, replacing your filter is key. Incorporate regular maintenance into your HVAC system to avoid hazards and extend its life.

Change your filter every three months, or even more often if you have allergies or pets. Set a reminder in your calendar or phone, so you don’t forget to check and replace your air filter! The HVAC professionals at Snyder are standing by to help.

Keeping the Heater Clean

Keep your heater clean! It’s essential for efficiency and safety. Get routine maintenance from a pro. You can also do a few things on your own:

  • Change or clean the air filter each month to stop dust and mess.
  • Wipe off the furnace exterior with a moist cloth.
  • Watch out for strange smells. Burning dust, burning metal and burning rubber are all bad signs. Shut off the heater if you smell something odd.

Importance of Addressing Burning Smells from Heaters

Burning smells coming from heaters can be serious. Don’t ignore them! These odors can be dangerous and can point towards a fire hazard. It’s essential to address the burning smell right away.

Reasons for the burning smell may include clogged air filters, electrical faults, debris in the ductwork, or a gas leak. Seek professional help to identify and fix the source of the burning smell. Regular maintenance of your heating system can prevent these smells.

When you notice any unusual smells, noises, or changes in heater function, turn it off and contact the pros at Snyder at 904-447-5945 to eep yourself and your home safe!

Professional Assistance from HVAC Technicians

HVAC techs are key when it comes to sniffing out and taking care of strange furnace smells. Examples include a burning smell, which may be caused by blocked air filters or dusty heat exchanger, and a metallic smell, which might suggest a gas leak. Plus, a burning hair smell could indicate overheating electrical components or even dead critters in the ductwork.

Tinkering with these issues on your own is risky and ineffective. HVAC professionals have the experience and tools to diagnose and repair any weird furnace smell problems. This keeps your home and family safe.

Regular furnace maintenance, like filter switches and expert cleanings, can help stop unusual furnace smells from popping up.

Professional HVAC services are a must for a comfy home. Be careful of certain furnace smells that could point to potential hazards. Contacting Snyder Air Conditioning, Plumbing & Electric for professional HVAC maintenance and repair can help avoid risks and ensure your unit is working correctly.

Be Cautious of These 3 Furnace Smells | Snyder Air Conditioning, Plumbing, & Electric (2024)


What furnace smells to worry about? ›

If you smell odors that suggest that something in the furnace is burning or overheating, you should immediately shut off the furnace and call Allbritten for an inspection. The odor of a rotten egg or sulfur is another cause for serious concern.

Why does my furnace smell like electrical burning? ›

An electrical burning smell could also mean your furnace motor is overheated or the heat exchanger is cracked. The heat exchanger properly exhausts carbon monoxide that's normally produced during the combustion process. If it cracks, carbon monoxide can get into your home. This invisible gas is deadly in large amounts.

Can a furnace cause a sewer smell? ›

Sewage Odors From Your Furnace

It's not unusual to detect a sewage-like smell from the furnace. You shouldn't ignore the odor as it could point to problems around your home that can be a hazard. The sewer odor is often from a faulty vent in the proximity of a drain system.

Does an electric furnace smell? ›

As your furnace heats back up it is burning this dust off, hence the burning smell. This is normal and is not considered to be a safety hazard. The smell should go away after a few hours once the furnace burns all the dust away.

What does electrical fire smell like? ›

Burning Plastic: The acrid odor of an electrical fire is often described as that of burning plastic. This is because wiring insulation, connectors, and many other electrical components are made of plastic materials. Electrical fires often start behind walls, so you'll sometimes start to smell rather than see one.

What does a leaking furnace smell like? ›

Rotten egg or sulfur smell

Natural gas is odorless, so a harmless chemical (mercaptan) is added to give natural gas an odor, so you can easily detect a gas leak. Most people would describe the odor as smelling like rotten eggs or sulfur.

What does overheating electrical smell like? ›

When a circuit overheats, the plastics and heat-resistant chemicals used in outlets, circuit breakers, or wiring insulation may emit a fishy or urine-like smell. The odor can be carried throughout the house by the HVAC system, and it may intensify or fade with changing temperatures and circuit usage.

Is electrical burning smell toxic? ›

Electrical Fires Not Only Smell Bad, But They're Also Toxic

This results is toxic fumes that include ketones and aldehyde gases that are harmful to inhale. Polychlorinated biphenyl (PCB) by-products are also emitted from electrical burning equipment that can cause cancer and other serious health issues.

What does a burning breaker smell like? ›

An electrical fire smells like melting plastic. In reality, the burning smell could mean the wires have shorted or are melting which could lead to an electrical fire and that's the last thing you and your home need.

Why does my house smell like sewer when AC is on? ›

If you smell sewage when you turn on your A/C unit, your sewer system may have backed up into your house or near your unit, and the smell may come from a ruptured pipe. Contact an air conditioning company right away if you notice a sewage smell or detect methane in your home. Do not let this problem linger!

What does a clogged sewer vent smell like? ›

Foul smells that you'd only usually smell from a sewer line can also signal a clogged vent stack. Those are usually caused by toxic sewer gases like ammonia and hydrogen sulfide. The latter, by the way, can make your home smell like rotten eggs. Note that methane is the largest constituent of sewer gases though.

What are the symptoms of sewer smell? ›

Exposure to lower concentrations can cause eye irritation, a sore throat and cough, shortness of breath and fluid in the lungs. These symptoms usually go away in a few weeks after exposure ends. Long-term, low-level exposure may result in fatigue, loss of appetite, headaches, irritability, poor memory and dizziness.

Can an electric furnace produce carbon monoxide? ›

Any furnace that burns fuel produces carbon monoxide as a byproduct. This is the same for any appliance in your home that burns fuel, such as a gas range. Therefore, if your furnace uses natural gas, propane, or oil to make heat, your furnace creates carbon monoxide. Electric furnaces do not create carbon monoxide.

What does a bad blower motor smell like? ›

Without adequate air flow, the furnace blower motor may overheat, making your home smell like something is burnt. This problem typically occurs due to poor air movement, stemming back to a dirty filter or blocked vents inside the home.

How much does a new furnace cost? ›

All that said, for gas furnaces, the price usually ranges between $4500-$8000. For electric furnaces, it's between $4000-7000. And for hybrid heat (gas furnace and heat pump), it's between $13k-$20 (remember this system includes cooling too).

Are there warning signs before an electrical fire? ›

Signs of an impending electrical fire hazard

Random flickering or dimming of the lights. Persistent burning smell. Frequent tripping of the circuit breaker. Discolored outlets and switches.

How do I know where my electrical smell is from? ›

Burning smell

Call an electrician immediately if you smell something electrical burning. Most electrical wiring has plastic insulation. An electrical fire initially has a fairly acrid smell of plastic burning. The short could be in the outlet or in the wiring inside a wall and can be hard to locate.

Can you smell an electrical short? ›

A short circuit can be caused by anything that touches the wires when they are in a circuit, such as a screw or even the person touching them. The melted part of the wire will burn on contact. It can create an electrical burning smell and cause a fire that must be removed from the circuit (and possibly from the house).

What does an HVAC gas leak smell like? ›


It is also possible that your furnace is leaking gas. Natural gas and propane are usually odorless and colorless in their purest forms. But regulations require gas companies to add a chemical called mercaptan for safety. So when there is a leak, you may detect the smell of rotten eggs.

What does carbon monoxide smell like? ›

Carbon monoxide gas is colourless and does not smell, so you cannot tell if it is around you. Symptoms of carbon monoxide poisoning include: headache. dizziness.

How do I know if my furnace is leaking carbon monoxide? ›

Warning Signs of a Furnace Carbon Monoxide Leak

Heavy condensation on the windows (found in the room with your furnace) Yellow or brown soot-like stains found around your furnace. A yellow pilot light (instead of a blue flame) Stuffy indoor air.

Why does my house have a weird electrical smell? ›

An electrical fire smell is often described as a “burning plastic” smell. This is because when wires overheat, the insulation surrounding them begins to break down and release chemicals into the air. These chemicals can have a strong, acrid smell that can be difficult to ignore.

Why do I smell electricity in my house? ›

An electric current itself doesn't have an odour. But in instances when electricity becomes visible or audible it also creates a distinctive smell. “The smell electricity emits is the contents of the gasses created when electricity conducts through air,” says Drax Lead Engineer Gary Preece.

What does a bad electrical outlet smell like? ›

The odor may be like a burning plastic smell in house outlets. After you discover which outlet has the burning smell, contact a licensed professional electrician to repair or replace the affected wiring, electrical box, and other components.

How long does an electrical fire take to start? ›

How Long Does It Take for an Electrical Fire To Start? An electrical fire can start slowly or happen instantly, with the source sparking in 2 minutes or lurking for 2 years.

Should I call the fire department if I smell electrical burning? ›

The smell of burning wiring is a distinctly unpleasant and immediately recognizable one. If you notice it, even slightly, call the fire department right away!

Does an electrical fire smell like eggs? ›

Sometimes, burning plastic, wiring, and other electrical components smell like rotten eggs or sulfur to some people. Other people notice a distinctive fishy smell. Whether you get a whiff of fish or rotten eggs, it's important to investigate the situation.

What are three warning signs of an overloaded electrical circuit? ›

Signs of Overloaded Circuits
  • Dimming lights, especially if lights dim when you turn on appliances or more lights.
  • Buzzing outlets or switches.
  • Outlet or switch covers that are warm to the touch.
  • Burning odors from outlets or switches.
  • Scorched plugs or outlets.
Nov 17, 2022

What does a furnace fire smell like? ›

Once the circuit board overheats in a furnace, it will give off a smell that's something similar to the smell of gunpowder.

What to do if circuit breaker smells? ›

If you notice a strange odor or an electrical fire smell coming from the panel, turn off and unplug all electrical equipment and immediately call an electrician. It's also a good idea to turn off the main power supply to your home by switching the service switch to the “off” position.

Can a clogged AC drain line cause a smell? ›

Clogged Drain Lines

If your drain line has become clogged, it may freeze your AC system, cause the drain pan to overflow, and lead to further damage. This buildup of moisture can cause a musty smell.

How do I fix the sewer smell in my house? ›

8 Ways to Get Rid of Sewer Gas Smell
  1. Clean the sink overflow. ...
  2. Check the toilet wax ring. ...
  3. Caulk the toilet base. ...
  4. Clean out bacterial growth in drains. ...
  5. Check rarely used bathtubs and sinks. ...
  6. Check for leaks. ...
  7. Inspect your garbage disposal splash guard. ...
  8. Schedule a video drain inspection.

Why is there a weird smell coming from my AC? ›

Mildew is the most common culprit when an AC smells bad. If you smell moldy air coming from your AC vents, mold or fungus are growing in or around your AC unit and can sometimes make their way into the ductwork itself.

How do you tell if your sewer vent pipe is clogged? ›

Here are the top three signs and symptoms that serve as warnings that your plumbing vent is clogged:
  1. Gurgling toilets and drains.
  2. Strong sewage smells.
  3. Sluggish drains.

How do I know if my sewer vent is clogged? ›

Signs That Your Sewer Vents Are Blocked

You may hear gurgling or even see water bubbling up and out of the drains as they drain. You may also hear gurgling coming from your toilet shortly after you flush. The gurgling is caused by air escaping through the drain.

How do you check for a blockage in a vent pipe? ›

Use a flashlight to shine a bright light down the vent pipe to look for further blockage you can reach. If you can see but can't reach, run a plumber's snake down the vent pipe. To continue, feed the end of a garden hose down the vent and have someone on the ground turn on the water.

Can a plumber get rid of sewer smell? ›

Loose connections along the vent pipe or sewer line can let pungent gases into your home. These will most typically be inside a wall or in the ceiling, requiring the help of an experienced plumber to correct this issue.

What are the symptoms of sewer gas poisoning? ›

Symptoms of acute exposure include nausea, headaches, delirium, disturbed equilibrium, tremors, convulsions, and skin and eye irritation. Inhalation of high concentrations of hydrogen sulfide can produce extremely rapid unconsciousness and death.

What is the main smell of sewer? ›

When organic materials break down in a sewer pipe they form hydrogen sulfide, a toxic and flammable gas. Hydrogen sulfide combines with gases like ammonia, carbon dioxide, methane and nitrogen that are present in the pipe to form “sewer gas”. This hydrogen sulfide gives sewer gas its sulfuric, egg-y odor.

What are two warning signs of carbon monoxide poisoning? ›

What are the symptoms of CO poisoning? The most common symptoms of CO poisoning are headache, dizziness, weakness, upset stomach, vomiting, chest pain, and confusion. CO symptoms are often described as “flu-like.” If you breathe in a lot of CO it can make you pass out or kill you.

Do I need a carbon monoxide detector if I have an electric furnace? ›

In fact, most building codes now require a carbon monoxide alarm on every floor of the house. However, if you do not have any sources of combustible fuel in your home — that is, your space heaters and whole-house heating system are electric, as are all of your appliances — then a CO detector isn't really necessary.

Do I need a carbon monoxide detector if I have all electric? ›

Even those living in all-electric homes should install carbon monoxide detectors because CO can seep into the house from an attached garage or if a backup generator is used too close to your living quarters during a power outage.

What does burning Freon smell like? ›

A freon leak will produce a smell between sweet and chloroform. Freon leaks can be toxic. If you suspect a freon leak, talk to a specialist who can use a freon leak detector to help address the issue.

How do I know if my HVAC blower is bad? ›

Key Signs of a Bad Blower Motor
  1. Strange Rattling, Clanking, or Screeching. ...
  2. Weak or No Airflow From The Vents. ...
  3. A Sudden Spike in Your Energy Bills. ...
  4. An Overheating HVAC System. ...
  5. Replace or Maintain a Part in the Blower Motor. ...
  6. Replacing the Blower Motor. ...
  7. Keep Up With HVAC Maintenance.

What are the signs of a failing blower motor? ›

What Are Signs Your Blower Motor Needs to Be Replaced?
  • Poor or Airflow from Air Vents. This will be the first and most obvious sign your blower motor has a problem. ...
  • No Airflow At All From Vents. ...
  • Skyrocketing Energy Bills. ...
  • Strange Noises When You Turn on the Heat. ...
  • Overheating Blower / Weird Smells.
Nov 22, 2020

What time of year is cheapest to replace furnace? ›

The middle of the winter and summer is when HVAC systems are in demand the most, causing prices to soar. The best time to replace your HVAC system is in the early spring, or in the early fall.

What is the average life of a home furnace? ›


A well-maintained furnace can last at least 15 to 20 years, but completing annual maintenance and being diligent with repairs can extend its life even longer.

What is the life expectancy of a new furnace? ›

An average furnace is designed to operate for 15 to 30 years in a home. The easiest way to increase the life cycle of your furnace is to hire a certified technician to perform maintenance and repairs once a year.

Is it bad if your furnace smells? ›

If a burning smell shows up every time you turn on your furnace, it might be your air filters. Dirty filters cause dust and grime build-up in your furnace that leads to a burning smell. Too much build-up overworks your system and could even cause it to shut down, so make sure your filters are fresh and clean.

Why does my furnace have a bad smell? ›

This musty smell occurs when dust, dirt, and other debris collect on your unit and in your air ducts. As your furnace warms, the dust and dirt may burn away and smell faintly of smoke.

What is the bad smell from HVAC unit? ›

Mildew is the most common culprit when an AC smells bad. If you smell moldy air coming from your AC vents, mold or fungus are growing in or around your AC unit and can sometimes make their way into the ductwork itself.

What to do if you smell electrical burning? ›

If you notice any sparks or burning smells coming from outlets or appliances, it's important to shut off the power immediately and call an electrician. Bad wiring can be extremely dangerous and should always be addressed by a professional.

What does mold in a furnace smell like? ›

Mustiness. A musty smell usually indicates that there is moisture trapped inside your furnace. If this smell is faint, or dissipates after a few hours, there is no cause for concern. However if the musty smell lasts for more than a few days it may indicate that there is mold growing inside your furnace.

How long does it take for furnace to stop smelling? ›

Upon first use, new furnaces might cause an unpleasant odor due to the protective oil coating on the inside. Much like a new oven, this protective coating must burn off. This smell should last for a day or two at most and doesn't point to a bigger issue.

Why does my furnace smell like sewer when I turn it on? ›

If your furnace smells like sewer, you might be smelling a dry sewer trap, which is located near your furnace. You can remedy this smell by pouring water down the floor drain in your basem*nt. Or you might be dealing with a sewer leak.

Can dirty furnace ducts make your house smell? ›

Dirty air ducts are not only capable of harboring odors, they can also circulate these unpleasant smells throughout the entire house. If you are the original owner of your home, you probably have a good idea of the source of your odor problem.

How do I clean a smelly furnace? ›

You can place a dish of baking soda or even the whole box in your air ducts. Baking soda will help to absorb foul odors; however, be sure that your HVAC filter is clean before doing this.

Should I be concerned if my AC smells? ›

Often the smells indicate that the system just needs a service. However, more serious odors like sulfur or gas indicate a more significant problem. If you are experiencing an electrical or burning odor, immediately shut down the unit and contact your local HVAC technician.

What does a refrigerant leak smell like? ›

You may smell an odor of ether, chloroform, or sweetness from the vents or the air conditioner itself. This is the odor of the refrigerant. According to the Department of Energy, refrigerant leaks are harmful to the environment, and exposure to the refrigerant may be harmful to your health.

What are two warning signs of carbon monoxide? ›

Early symptoms of exposure to CO, even after only breathing it for a short time, include: Dull headache. Shortness of breath during mild exertion. Weakness or fatigue.

What are the six signs of carbon monoxide poisoning? ›

The most common symptoms of CO poisoning are headache, dizziness, weakness, nausea, vomiting, chest pain, and confusion.


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Introduction: My name is Msgr. Benton Quitzon, I am a comfortable, charming, thankful, happy, adventurous, handsome, precious person who loves writing and wants to share my knowledge and understanding with you.