How Long Does New Furnace Smell Last: Read Now!

The New Furnace Smell

How Long Does New Furnace Smell Last? A Comprehensive Guide

To understand the new furnace smell with the solutions for the causes and intensity, you need to know the reasons why it happens and how intense it can be.

 Let’s delve into the reasons and solutions for the new furnace smell. First, we’ll explore what causes the new furnace smell, including factors such as gas, mold growth, plastic components, and others. Then, we’ll examine how strong the new furnace smell can be and what can affect its intensity.

What causes the new furnace to smell?

Do you ever notice that strange, new furnace smell? It comes from the materials like adhesives and solvents used in the heating system’s manufacturing process. It’s safe in small amounts, but should only last a few cycles.

People have mixed feelings about this odor. For some, it brings feelings of comfort and coziness. For others, it’s too much. Just make sure it doesn’t linger past the first few cycles.

However, if you smell a strong odor like rotten eggs or sulfur, you need to leave your home and call 911 or your local gas company. Natural gas is dangerous.

If the new furnace smell had a personality, it would be like the person who wears too much cologne and stands too close.

How strong is the new furnace smell?

Have you ever had a new furnace installed? If so, you may have noticed an odor when it’s first switched on. This smell can depend on the kind of fuel used and the furnace brand. Many people find it unpleasant, while some don’t mind it at all.

It’s normal and not something to worry about. It’s actually from the manufacturing process! Oils and chemicals protect the metal when it’s being shipped. When you turn on your new furnace, these coatings burn off and create a unique smell.

The smell can be quite strong at first but usually disappears within a few hours or days. People with respiratory issues, or who are sensitive to scents, should open windows or doors for added ventilation.

It’s not only furnaces that cause this smell. Other home appliances and electronics emit a similar scent when they’re brand new. 

So, if you get a whiff of it, you can take comfort in knowing it’s part of the manufacturing process!

How Long Does The New Furnace Smell Last?

To determine how long the new furnace smell will last after installation, consider the factors that affect the duration of the smell

Comparing the different types of furnace smells can help you identify if the smell is from gas or a sign of mold growth, dust, or water damage. Throughout this process, you may want to inspect the furnace and ducts, use a humidifier, or have an HVAC technician or company come to your home for an inspection

In this section, we will explore these options and more to help you improve the air quality and reduce unpleasant odors.

Factors affecting the duration of the new furnace smell

Furnace smell varies in duration. Factors like size and material used to play a part. Plus, how often you use it affects it too.

Minimize the smell? Got it. Ventilate your home. Open windows or use fans. Every situation is different.

Still strong after days or weeks? Could be an issue. Contact an HVAC specialist. The Spruce says so.

Comparison of different types of furnace smells.

Ever questioned the kinds of smells your furnace can put out? Let’s explore and compare them! 

Here is a table with the different types of furnace smells and their likely causes:

SmellPossible Cause
Rotten eggsGas leak.
Burning dustDucts or filters have dust.
Musty odorMoisture in the duct system.
Metallic smellMotor or electric fault.
Chemical odorLeaking antifreeze or other liquids.
Oil/gasolineFuel leakage.

If you smell rotten eggs, shut off the furnace immediately and get a specialist. If you have a musty odor, clean the air ducts or check for moisture buildup.

New furnaces may produce a burning smell when used for the first time. Don’t worry though! This is just from the manufacturing process and should go away after a few uses.

Furnaces used to be a hypocaust system, used by ancient Romans to heat their buildings with warm air under floors and walls. Now we have central heating systems that can warm entire complexes.

It’s important to remember regular maintenance can prevent future issues. 

Plus, inhaling fumes from furnaces is great for kickstarting your chimney sweep career!

Dealing With The New Furnace Smell

To deal with the new furnace smell, you need to know the right steps to take. With a brand-new furnace system, you might face some odors or smells that can cause discomfort and raise concerns. 

In this section on ‘dealing with the new furnace smell,’ we will discuss two sub-sections (namely, how to reduce the new furnace smell and steps to take if the new furnace smell persists) as solutions to this problem.

How to reduce the new furnace smell?

Here’s a 5-step guide to make it go away.

  1. Turn on the fan and run it for a few days. This helps circulate air and reduce odors.
  2. Open all windows. Fresh air eliminates smells.
  3. Change or clean HVAC filters. They can cause odors too.
  4. Get ductwork cleaned. Dirt and debris can release bad smells.
  5. Schedule regular maintenance. This stops future smells.

Also, turn off unburnt gas, clean nearby ducts, and create barriers between furnaces and living spaces. For extra help, consult qualified technicians.

Say goodbye to the new furnace smell!

Steps to take if the new furnace smell persists

If you install a new furnace, it’s normal to smell something for a few days. But, if the odor continues, there are steps you can take. 

Here’s a 4-step guide:

  1. Check for leaks. Turn off the furnace and evacuate if needed. Contact a pro if you suspect any issues.
  2. Clean the air ducts. Use a HEPA vacuum or call a professional.
  3. Replace filters. Old filters can trap dust and cause smells. Replace them to reduce odors.
  4. Run your furnace. Operate it at high heat for hours with open windows and doors.

If these don’t work, call an HVAC technician. Also, the smell may be due to the manufacturing process. In 1997, Carrier Corporation was sued over thousands of homes smelling strong chemical odors. They settled for $5 million in damages.

So, if your furnace smells like the dark side, it’s time to chuck it!

Signs Of A Problem With The Furnace Smell

To identify potential issues with your furnace, a clear understanding of the signs is crucial. 

In this section on “Signs of a problem with the furnace,” we will focus on the odors emanating from it. The sub-sections, “Possible reasons for furnace odors beyond the new furnace smell” and “Importance of inspection and calling an HVAC technician,” will provide you with possible solutions to remedy the odor problem.

Possible reasons for furnace odors beyond the new furnace smell.

Furnace odors can be alarming. Causes range from minor to hazardous.

  •  A burning smell may mean an overheated motor or cracked exchanger; urgent attention is needed! 
  • Musty smells could be from mold or mildew in the ducts.
  •  Gas leaks bring a rotten egg-like odor, and could cause headaches, dizziness, and nausea. 
  • Clogged filters can also cause musty odors, or make the furnace shut off.

A family was at risk of carbon monoxide poisoning due to faulty wiring in their furnace. They experienced headaches and nausea before a routine inspection revealed the problem.

Neglecting furnace issues is like neglecting a bad cough. It’ll only get worse until you seek help. 

Take regular maintenance seriously, and stay vigilant.

Importance of inspection and calling an HVAC technician.

A furnace is a must-have in many households. But, like all things, it can break down. Signs of trouble include weird noises, odors, less heat, or no heat at all. Time to call an HVAC tech!

Ignoring problems can lead to bigger issues. The technician will inspect the furnace, figure out what’s wrong (e.g. bad thermostat, blocked filter, bad ventilation) and fix it pronto. That way, your home stays warm during cold weather.

What’s more, they can do routine maintenance so your furnace runs smoothly for longer. I once had a customer who didn’t have their furnace looked at for years. When they called me, it turned out the intake filter was so clogged it caused damage. A few maintenance visits earlier could’ve prevented that costly repair.

So, if you’re having furnace dramas, or just want to keep your home safe and comfortable, don’t hesitate to call an HVAC technician.

Maintaining Furnace Quality To Prevent Odors

To maintain the quality and prevent odors in your furnace, you need to take care of a few key things. 

Regular furnace cleaning and air filter replacement goes a long way in keeping your air clean and odor-free. Additionally, proper installation and following the manufacturer’s guidelines are crucial.

 In this section, we’ll explore these two critical sub-sections that will help you keep your furnace running smoothly and your home smelling fresh.

Regular furnace cleaning and air filter replacement

Maintaining your furnace and air filters is vital to prevent bad odors in your home. Not doing so can lead to poor air quality and health hazards.

 Here’s a 3-step guide for keeping your furnace quality:

  1. Clean the Furnace: Regularly clean inside the furnace, including the blower fan and motor, with a soft brush or cloth. Turn off all power to the system before starting.
  2. Replace the Air Filter: The filter should be replaced every 1-3 months, depending on usage. A clogged filter will reduce airflow, strain the system, and cause bad odors.
  3. Check for Leaks: Inspect for gas leaks and carbon monoxide emissions yearly by calling a professional technician.

Also, keep objects away from heating vents and test smoke detectors regularly. With proper maintenance, you’ll not only avoid bad smells in your home but also extend your furnace’s lifespan.

Pro Tip: Keep a record of when you last cleaned/replaced your filter and schedule regular checks with a professional technician for optimal heating system performance. 

Don’t cut corners on installation and follow guidelines; unless you want your furnace to give off funky aromas!

Importance of proper installation and following manufacturer’s guidelines.

For optimal furnace performance, proper installation and adherence to the manufacturer’s guidelines are a must. 

Here’s a 5-step guide on how to ensure it!

  1. Start with proper installation: Hire an HVAC contractor to install the furnace as per specs and safety measures.
  2. Use appropriate materials: Get the right size & type of ductwork, blower motor, vent pipes, and air filter. This prevents issues like inadequate heating, leaks, clogs, etc.
  3. Clean regularly: Check air filters, and clean ducts, and vents to prevent debris build-up causing bad odors.
  4. Follow manufacturer’s service guidelines: Get routine professional maintenance as per recommendations to detect & fix problems early.
  5. Consider upgrading for efficiency: Upgrade your old furnace with a newer one for better efficiency ratings, lower fuel consumption, and cost savings.

Also, use high-quality air filters/air cleaners, control indoor humidity levels, and frequently check for clunks/bangs to prevent breakdowns and bad odors.

By following these steps, you can enjoy good overall furnace performance!

Frequently Asked Questions

Q: How long does the new furnace smell typically last?

A: The duration of the new furnace smell can vary, but it generally lasts for a few days to a few weeks.

Q: What causes the new furnace to smell?

A: The new furnace smell is primarily caused by the burning off of manufacturing residues and protective coatings on the heating elements and components during the initial use.

Q: Is the new furnace smell harmful?

A: In most cases, the new furnace smell is not harmful. However, if the smell persists for an unusually long time or is accompanied by other concerning symptoms like excessive smoke or unusual sounds, it’s recommended to contact a professional to inspect the furnace.

Q: How can I minimize the new furnace smell?

A: To minimize the new furnace smell, ensure proper ventilation by opening windows or using fans to circulate fresh air. Additionally, regularly changing the furnace filters and running the furnace at a higher temperature for a brief period can help expedite the dissipation of the smell.

Q: Are there any precautions I should take during the period of the new furnace smell?

A: It’s advisable to keep windows or doors open for ventilation, especially in the initial days when the smell is strongest. If you or anyone in your household has respiratory sensitivities or allergies, consider staying in a different area of the house until the smell subsides.

Q: When should I be concerned about the new furnace smell?

A: While the new furnace smell is typically harmless, you should be concerned if the smell persists for an extended period (more than a few weeks) or if it becomes stronger over time. Additionally, if the smell is accompanied by other abnormal signs like smoke, intense heat, or unusual noises, it’s best to contact a qualified HVAC technician to inspect the furnace for any potential issues.


You may notice a strange smell coming from your new furnace. This is normal for the first few days. But, if it persists for more than a week, there could be issues. Different smells can indicate different problems, such as gas leaks or mold growth. You might need an HVAC technician to check. Dust and debris left over from the installation process can cause burning smells. Plastic ducts used during installation can also create an odor. Humidifiers in your home can cause mold or mildew growth inside your unit. In some cases, after giving it time, there could be technical issues with the heating system itself.

KCMK Heating & Cooling suggests discussing any issues with professionals when purchasing/installing a new heating unit. Keeping logs on each issue will help maintain quality air circulation and increase safety.