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In your HVAC system, the furnace is the largest of all the parts. Since it requires the most space, you’ll usually find it in the basement or the garage. The furnace is the star in your HVAC – it heats the air that is then distributed to various rooms in your house through ductwork or piping. If the furnace has issues, the rest of the HVAC system will suffer. Being able to identify furnace problems before they become severe could save your whole system from breaking down. Here are some indicators:

Inadequate Heat An obvious sign that the furnace needs urgent attention is when it stops doing its work. If your furnace is blowing cold air or a low level of heat, first check the temperature settings. If the temperature settings are okay and there is no loose wiring or a tripped breaker, there could be a more severe problem with your furnace. The furnace could also be blowing cold air as a result of overheating. If the furnace blows hot air, then cold air, and after a while stops blowing any air, overheating is the likely cause.

The most common reason why a furnace overheats is because of dirty filters. Dirty filters block airflow causing a furnace to overheat. If not checked, the heat exchanger, which is more expensive to fix, will malfunction. How about replacing the air filters instead?

Strange Noises Different noises point to specific issues. A screeching noise could be signalling problems with the motor. Vibrating or whining noises signal a severe furnace issue like a loose mount. Loud booming sounds can be a sign of dirty furnace burners that need urgent servicing. Booming sounds could also come from air ducts expanding and contracting in very cold weather in spaces that are unheated. While it’s natural for the furnace to produce certain noises when it’s in operation, strange noises could also mean the furnace is nearing the end of its life and needs replacing. Only a professional heating technician can ascertain the right course of action.

Abnormal Furnace Smells Furnaces can smell like the fuel that they use, but this smell should dissipate as the unit runs.  If you notice a certain strong odour that doesn’t go away with time, the furnace could be signalling that there is a problem within the system. The issue could be as simple as excess dust in the unit or as serious as a gas leak. If your furnace has a carbon-monoxide detector it’ll go off if there’s the presence of toxic gases. If you notice an unusual smell coming from the furnace or if the detector goes off, switch the system off. Then open the windows to ventilate the house and call an HVAC technician right away.

The Burner isn’t Igniting Clicking sounds in a furnace that has a spark ignition could indicate underlying issues like a faulty control board, blocked flue or improper limit control. Instead of waiting for the furnace to die, have it checked.

Lastly, increased heating bills could indicate issues with the furnace or other parts of the HVAC system. If you see any of the above indicators, call Classic Air Conditioning and Heating and have your furnace equipment fully checked by one of our HVAC repair professionals. Catching a problem early enough can save you the hefty cost of a New air conditioner

See What Our Customers Are Saying

Friendly, Informative, and Efficient

My wife and I are so pleased with your company. Kurtis Hall is great! He is so friendly, informative, and efficient. You should be very proud of him -- we sure are.

David Vaughan

Sooooo honest! Saved me $2,200!

Ask for Kurtis! Sooooo honest! Fixed the issue instead of trying to sell what I didn’t need. He was the 3rd estimate for my ac problem. Turned out I don’t have a major problem. I’m so thankful he saved me $2,200! Extremely trustworthy!Kim T from NB

Kim Thompson

We are so glad we found this company!

Kurtis has been very responsive to our AC and heat issues. You don’t have to worry about not getting a call back. He’s consistent with customer service and does very professional work. We are so glad we found this company!

Dina Green

Thank You So Much for Recommending the Air Scrubbers

I just wanted to tell you how happy we are with the air scrubbers.  The air is so clean and the dust has really gone away.  I highly recommend them.  Again, thank you so much for recommending the air scrubbers.

Jennefer Reardon

I Knew I Made the Right Choice from the Word Go

Kurtis Hall dealt square and honest every step of the way. His knowledge of our dated system, new product information, project scheduling and communication allowed for a seamless installation at our vacation property without my having to interrupt my work schedule to accommodate the project. And living over 5 hours away that was a huge help to me. I knew I made the right choice from the word go. Excellent job Mr Hall! Will recommend your company to others!

Sam Mckee

Impeccable Quality and Professionalism…

Had them install our system when building and multiple other contractors commented on the impeccable quality and professionalism of their work and staff. Worked with them on another building project and had equally great service and quality. Used them on a service call and Mitchell was very timely, efficient, and professional. Provided explanation in detail of what had happened and fixed it quickly. VERY impressed with this company and would recommend to ANYONE in need of a system install or repair service.

Rebekah Ashworth

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Classic Services AC & Heating

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

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