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The HVAC techs at Clark Comfort get a lot of questions from our local homeowners about their heating, cooling, and vent systems. In our decades of combined experience, we’ve seen just about everything! Plus, with our factory training on all major brands and models of HVAC equipment, we know the ins and outs of every type of furnace or air conditioner, which makes us pretty much experts.

Today, we’re answering your most pressing questions about your home’s HVAC equipment.

What do the letters HVAC mean?

HVAC stands for Heating, Ventilation, and Air Conditioning – the furnace or heat pump, air ducts, and air conditioner that keep your home’s temperature comfortable.

What is my air conditioner or furnace warranty?

Many brands offer warranties from three to seven years, but the average is five. Look for a label on the outside of your appliance with the brand, model number, and date it was manufactured. Then, you can check the brand’s website for warranty information and see if your appliance is still within it.

What’s up with the loud noises coming from my furnace?

Whooshing noises when the furnace turns on could mean a problem with the gas or pilot light. Banging sounds or rattling often mean a loose part. Our techs can tell you for certain what’s wrong with it.

How large of an air conditioner or furnace should I get?

The size of the furnace you should buy often depends on how large the space you plan to put it is. Outdoor air conditioners, though, don’t really have that restriction. What you should look for is the SEER rating and the number of BTUs, and what you need based on the square footage of the house, the number of windows, and your anticipated usage.

What is a trip charge for my repair?

A trip charge is the expense for your Clark Comfort’s travel time and time spent diagnosing the problem with your furnace or air conditioner.

What is a Precision Tune-Up, and do I need one?

You actually need a tune-up for your HVAC system every year. We like to perform the tune-up for a furnace in the late summer or early fall and the one for your air conditioner in late winter or early spring. Tune-ups are routine maintenance, cleaning, inspections, and re-lubrication that ensures that your appliance is working at its most efficiently.

Should I replace the indoor system when I replace the outdoor system?

Heating and cooling equipment is initially installed at the same time, and both furnaces and air conditioners have a lifespan of about 10-12 years. If you’re replacing one unit because it doesn’t work anymore, chances are the other one is on its last legs, too. It may be better to replace both and upgrade to something energy efficient or a Smart Home system.

How often do I need to change the air filter in my home?

You should probably change the air filter every 30 to 90 days. If you have pets in the home, live in a high-pollen area, or someone in your house has allergies or respiratory disease, then you should change it monthly. Otherwise, 60 to 90 days is fine.

Should I cover my outside air conditioner during the winter?

Outdoor a/c units are durable and can withstand harsh weather conditioners, so you usually don’t have to. But, if you have window air conditioners, then you should either remove them or cover them with a breathable piece of fabric.

Should I have a humidifier in my house?

Humidifiers reduce the effects of dry air on your skin and can help during the winter, especially if you have very dry or easily chapped skin. If you use your home’s air conditioner continuously in the summer, you also may need a humidifier since part of the function of an a/c unit is to remove humidity from the air inside.

Should I have my air ducts professionally cleaned?

Yes! And don’t try to do it yourself. Regular ductwork cleaning removes the dust, pollen, pet dander, and mold spores that accumulate in the air in your house. Without regular cleaning, your interior air quality can be worse than polluted air outside! When these particles recirculate in your house, your family and pets can get sick more often.

How long can I run my air conditioner before it freezes over?

You shouldn’t strive to operate your air conditioner until it freezes over – when this happens, you may have to replace the whole unit. The length of time you can run the a/c without breaking or freezing the evaporator coil depends on how cold it is and how long you have it on without setting it to cycle off. Make sure that the coolant levels are right, also to avoid the coil freezing over.

Call Clark Comfort Today For All Your Residential HVAC Needs!

If you have questions about your own heating or cooling appliances, or if you think there’s something wrong, give us a call! We’re here when you need us for all your heating, cooling, and indoor air quality needs.

Reviews & Testimonials

Customer satisfaction is our #1 priority

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My technician was Doug. I had an emergency plumbing issue and he came right out and worked diligently until the issue was fixed! I was very impressed with his professionalism and knowledge. I recommend this business and Doug! They had to come back out and fix an additional problem we found from the first instance and Brad accompanied Doug. They were both professional and completed the work in a timely fashion.


Clark’s Plumbing to save the day. Team Jeremy and Doug saved me time, frustrations, and money on upgrading our hot water heater. They were very professional, personable, and considerate of what is best for the customer. They were on time, courteous and friendly. They worked diligently and were honest. These values are hard to find in today’s environment. I really appreciate Team Jeremy and Doug. These guys are amazing.

Nicole S.

Had a leak appear by the back door. Called Clark heating and air conditioning, left a message and within five minutes had Jeremy call me back. He was out at my house within twenty minutes which was very quick. He quickly found the problem which was the ac stack, he removed the clog quickly. I was afraid it was going to be something more serious but thankfully it was simple. Awesome service and will be my go to company for a/c and plumbing. Jeremy was very professional and did a wonderful job.

Tim B.

Great experience with this company. I called Tuesday morning about my pilot light no longer working in the water heater, and Doug and Jeremy came out that afternoon. They were quick and efficient and made sure they explained what was going on and what could be done. Sadly, I needed an entire new unit, which required an electrician. Clark’s set that up as well, and I didn’t have to make any calls to get it done.

Jonathan M.

Was awoken to water pouring out of hot water heater in the hall and scrambled to find water shut off, got the water off and called Clark. Doug and Jeremy were here in under five minutes. Amazing!!! After a quick inspection they ascertained it was a ‘thermal unit’ and had us back to hot water in under 30 minutes! I sincerely and highly recommend Clark and specifically these two gentleman. We could not be more satisfied with the work and their comportment while here. True PROFESSIONALS!

James B.

Came out to service A/C after beginning membership. Couldn’t be happier, the air is running great now. Zack even took care of a wasp nest on my front porch. Very nice people and very prompt. Will definitely be using from here on!

Amanda B.

We would like to Thank the Clark Heating, air conditioning and Plumbing team members Jeremy and Doug for coming out to Tonnie Caldwell home making sure everthing was taken care of explaining everything to us about what needed to be done and was on time and very clean in doing there job and making sure we were happy in the service they provided. I will be calling you all again for any service that I may have in the future. Thanks once again.

Sheila I.

Doug and Jeremy arrived on time they both were courteous and professional took extra care wearing foot protectors and mask , could not ask for better service than these fellas performed.

Jeff W.

I called this morning for an issue with my water heater and leaky bathroom faucet. The company promptly sent out two awesome technicians Doug and Jeremy. They were prompt, professional and knowledgeable. Will definitely be using in the future and would recommend to anyone in need of service!

Bernadette E.

For over a year, I have used Clark’s to service my air conditioning system, but recently I decided to upgrade. Norah and Blake was very professional, on time, and knowledgeable. Just like Clark’s was recommended to me, I will also recommend them to someone else, because they are the best company for air and heating needs .

Rotonya S.

We recently had both plumbing and thermostat issues. Clark came out very quickly to assess our situation and even though the plumbing required a lot of work, they finished in a couple of days. Ryan with heating and air was knowledgeable and pleasant. Doug and Jeremy were patient with all of our plumbing questions, knowledgeable about the work and products, then did a great job fixing our regulator and putting in a tankless water heater.

Shelby T.

We service all makes and models

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