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As the seasons change, so does the air inside your home. When winter begins, your air conditioner takes a rest from its hard work, and your furnace kicks on.

However, you might notice something when you turn up the thermostat: a strange smell has spread throughout your home. Nothing else has changed, so what could it be?

Believe it or not, your furnace is the cause behind stuffy indoor air. But why does this happen, and what can you do to solve it?


What Causes Stuffy Air?

The warm air from your furnace circulates throughout your home, then is recycled and recirculated again. Over time, this can make the air feel stuffy and take on odors. Think about it: that warm air is essentially trapped inside your home. No wonder it takes on a funky smell after a while! 

There may be several causes behind your indoor air problem. Here are a few of the main ones:

  • A lack of humidity. The heat from your furnace dries out the air in your home. Try purchasing a humidifier to offset this issue. It will replenish your air with the moisture it needs. However, you don’t want too much moisture in the air—that can cause musty smells and mold issues.
  • Dirty air ducts. We don’t often think about the ductwork that disperses warm and cold air throughout our homes. Over the years, these ducts get clogged with dust, debris, and other contaminants. This can trigger allergies and create a stale odor in your home.
  • A faulty furnace. If you suspect that your furnace is causing this issue, it might be time for an inspection by an HVAC technician.


How Do You Ventilate Your Home?

What can you do to eliminate odors and keep your indoor air fresh?

  • Purchase a fan. Your air might need more circulation. Ceiling and/or floor fans can help with this. Set one up in your bedroom or living room to enjoy better circulation.
  • Keep doors open. Isolating different areas of your home will only make this issue worse. Try to keep bedroom doors open to allow for more airflow. 
  • Clean the house. A buildup of dust might be contributing to a stale odor in your home. Roll up your sleeves, grab your cleaning supplies, and get down to it. 


The air filters in your HVAC system might need a cleaning or a replacement altogether. They won’t be able to trap particles if the screens are clogged with dust.

  • Improve your home’s insulation. Give your furnace a break by sealing any holes in your home. Bolstering the insulation in your attic or exterior walls will prevent warm air from escaping your home. In turn, your furnace won’t need to work as hard to heat the air.
  • Have your HVAC system serviced. We’re all familiar with the symptoms of winter: dry skin, runny noses, and goosebumps whenever we step outside. But these issues can be alleviated by a furnace that’s running at its peak efficiency. 

For heating and air service in New Braunfels, visit Classic Air Conditioning & Heating. We’re here to help you with all your HVAC needs, including furnace repair, maintenance, and air conditioning installation in New Braunfels tx

See What Our Customers Are Saying

Barbara Williams
Barbara Williams
Installation of new HVAC system today! Mason and Chris were amazing, thorough and professional! If their maintenance is this great it will be amazing
Jan Watson
Jan Watson
Five stars for everything... friendly, answered all my questions, courteous, and professional. feel like family, we are stuck with them. Highly recommended company.
Jamie Watts
Jamie Watts
Awesome experience! Very professional and reasonably priced. Will use for all system maintenance and repairs.
Trey B
Trey B
I love this company. Their technician Mitchell is super knowledgeable and helpful. He fixed issues with our heater that everyone else missed. We noticed a huge difference this year when it got really cold.
mac vanheldorf
mac vanheldorf
We had been with our previous AC company for over 6 years with maintenance contracts. They had quoted us an unrealistic price for installing some UV lights. We went in search of another quote. My husband called around to three different companies. Classic responded with a great telephone conversation and seemed to really want our business. They had a representative come within 3 days . The technician was very honest about what he found. He had quotes to us that very afternoon. The technician installed the equipment and we now have new maintenance contracts in place. We also love that they are local in New Braunfels. The old company never inquired as to why we were leaving them. Very satisfied.
Stephen Mings
Stephen Mings
Timely, professional, and addressed all my concerns.
Lisa Chappell
Lisa Chappell
We love Classic AC and Heating! Every time we have called, they’ve made it a priority to show up quickly to make sure we were taken care of!

Classic Services AC & Heating

License: #TACLB27092E

1893 State Highway 46 South, New Braunfels, TX 78130, United States

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