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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon465
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Karns - Updated Nov 2026

Avatar for Smith Mechanical Heating & Air Conditioning, LLC
Smith Mechanical Heating & Air Conditioning, LLC
4.9(
61
)
Central A/C - InstallHeat Pump - Install or Replace

Serving Karns, TN and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Jack and team came out on a less than 1 day notice as they were wrapping up the day. 5 other companies told me I had to wait until the morning. Jack explained each troubleshooting step, found the root cause quickly. Repaired on the spot and charged a very reasonable price. I will definitely hire again. As a matter of fact, I signed up for the maintenance program."
Maintenance new client
Maintenance new client
Is your AC unit a Fire Hazard?
Is your A/C unit a Fire Hazard?
Cleaned up and ready to go

+3

Response time4 hrs
Response rate87%
22 neighbors recently requested a quote
Avatar for CM Walter Heating & Air LLC
CM Walter Heating & Air LLC
5.0(
24
)
Gas Furnace / Forced Air Heating System - RepairCentral A/C - Service or RepairDuctless Mini-split Heating System - Install or Replace+1 more

Serving Karns, TN and surrounding areas

Approved

Free estimates

Offers commercial services

"Martin was very knowledgeable, an incredible experience with a total air conditioning replacement. He worked with me and my needs and was very professional; I cannot say enough about this guy. I would definitely rate him the highest regard in this area and will definitely be retaining him as my service HVAC technician. Just wow, he saved me thousands of dollars."
1 neighbors recently requested a quote
Avatar for Air Specialities LLC
Air Specialities LLC
5.0(
25
)
Air Ducts & Vents - Clean

Serving Karns, TN and surrounding areas

Approved

In business since 1988

Free estimates

Warranties offered

"It went great! Kevin and his crew went above and beyond my expectations. From the initial call, to the complete walkthrough free estimate, to the cleaning, Kevin kept us informed throughout the entire process. I asked for a thorough inspection and cleaning, and that is exactly what we got. They thoroughly cleaned and sanitized our complete HVAC system, including all supply lines, registers, and returns. They even removed and thoroughly cleaned the grills. They opened up the trunk lines and cleaned and sanitized them then sanitized with Foster’s 40:80 antimicrobial product. They sent me videos of their work as they were working throughout the house, and I was shocked to see mold growing in the attic unit. They cleaned and treated it, so hopefully our allergy problems will go away. Because they are mold specialists, I asked about a problem we were having with a leaking window. Kevin and his guys caulked the window and treated the interior wall and didn’t even charge me for the extra work. They were not the cheapest quote, but it was so much better than the last time we had vent cleaning, so the extra cost was so worth it! I highly recommend them and look forward to referring them to others and using them in the future."
Response time1 day
1 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Ducts Air Duct Cleaning, Inc.
Ducts Air Duct Cleaning, Inc.
4.8(
105
)
Air Ducts & Vents - Clean

Serving Karns, TN and surrounding areas

Approved

Super Service Award Winner

In business since 1998

Free estimates

Emergency services offered

"I was first impressed when the owner, Mr Rankin , answered the phone within 2 rings. After explaining what i was looking for , Mr Rankin explained in detail what his company could do as far as duct cleaning of my HVAC system. He was forthright and knowledgeable and answered all my questions regarding his company's reputation and experience. Immediately after our conversation he emailed me a very detailed quite and his company insurance documentation. My appointment was made., and he texted me the names of the technicians. They arrived on time, equipped with booties to wear thru out the house. The work performed took about 4 hours from start to finish. Mr Rankin's techs were extremely polite and very respectful . They also took their tome cleaning up after themselves. We have noticed an immediate improvement, so much so i was considering replacing HVAC unit before i met Mr Rankin. Now the unit is working as it should and my entire hone is very comfotable. I am so happy with the results and if you are considering getting your HVAC ductwork cleaned and sealed , I would highly recommend this company. Good to see great customer service. Thankyou to Mr Rankin and his team of professional technicians"
Response time7 hrs
Response rate100%
Recommended by81%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

Troubleshooting common issues with your AC often sheds light on a problem with the compressor. Signs that you need to replace a bad compressor include your AC blowing warm air, short cycling (turning on and off), making strange noises, and blowing less air overall. Since these problems can stem from several areas of your AC, always call a local AC repair team to confirm it's the compressor.

The best time of year to purchase or replace an HVAC system, including components like an air conditioner or furnace, is during the off-season—spring and fall. During these periods, HVAC professionals are less busy than in summer and winter, when extreme temperatures create urgent demand. Shopping during the off-season can lead to savings of 10% to 15% on an AC unit and allows you more time to find the best deal and other cost-saving incentives. Typically, air conditioning units go on sale in the fall after demand drops, while furnace prices tend to decrease in the spring.

You can air condition your Arizona room by extending your home’s existing HVAC system or adding a ductless mini-split system. Arizona rooms that have full windows rather than screens only are a better choice for air conditioning—screens will let the cold air out as fast as the air conditioner can make it. 

A power outage can damage your air conditioner, just like a power surge can damage any electrical device or appliance. In most cases, your circuit breaker or built-in surge protection on your AC unit protects your AC and just needs a reset. But in other cases, it might be that your AC compressor or capacitor was blown during the power surge. You’ll need to have an HVAC professional repair or replace any AC parts. 

For washable or electrostatic air conditioner filters, you can soak and rinse them with water. If you rinse the filter with water, make sure to use a faucet, shower head, or garden hose with a gentle water pressure setting, as strong water pressure could damage the filter.

But for disposable filters, water could ruin the filter, even allowing mold to grow in the filter. Instead, these filters should be replaced.

The Karns, TN homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.