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  • Average homeowner rating star icon4.5
    Average homeowner rating
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    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Carnegie

Mullen Heating and Air Conditioning
4.6(
205
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+47 more

Serving Carnegie, PA and surrounding areas

Approved

In business since 1988

Emergency services offered

Warranties offered

"We came home from an outing on a Sunday night and found our air conditioner not working. I found John Mullen on Angie's list and liked the reviews. I contacted John and he asked me about my schedule on Monday. He fit us in on Monday morning. I wasn't home but my wife was. She said that John was so nice that she assumed that he was a friend of mine. I told her that I never met him before. He fixed the air conditioner and I am relieved that it didn't cost us a ton and we avoided 85 degree heat with an air conditioner. I would use John again. He was dependable, came out with in 12 hours of being called, and my wife does not always comment on how nice someone is unless it is absolutely true. Thumbs up for John Mullen, I have just found a go to guy for everything!"
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Response time2 days
Response rate100%
7 neighbors recently requested a quote
Sullivan Heating, LLC
4.5(
123
)
Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - Repair+7 more

Serving Carnegie, PA and surrounding areas

Approved

In business since 1984

Emergency services offered

Warranties offered

"Wow! We laughed about how my new furnace moved me into the 21st century. And I added central air...all for a reasonable amount. The contractor explained the pros and cons of what was available and we came upon a great heating & cooling system. I felt bad they had to work so hard to remove the old furnace but they were professional throughout. I absolutely love my lower utility bills!"
4 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Air Systems Mechanical Contracting, Inc.
Air Systems Mechanical Contracting, Inc.
4.6(
54
)
Gas Furnace / Forced Air Heating System - InstallCentral A/C - InstallBoiler or Radiator Heating System - Install or Replace+21 more

Serving Carnegie, PA and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"The greatest company to have do your furnace. I would diffidently recommend them to other people. The price was very reasonable and the professionalism was without a doubt the best . There were no surprises when it came time for the final payment What ever they quoted that what you paid."
Williamson Upflow Oil Furnace
18 SEER American Standard A/C
American Standard TAM4 Air Handler
Rheem Tankless Water Heater
Williamson Condensing Boiler Installation

+12

Response time11 hrs
Response rate86%
5 neighbors recently requested a quote
Avatar for ARS - Pittsburgh
ARS - Pittsburgh
4.5(
197
)
Gas Furnace / Forced Air Heating System - InstallCentral A/C - InstallCentral A/C - Service or Repair+5 more

Serving Carnegie, PA and surrounding areas

Approved (Corporate)

In business since 1975

Emergency services offered

Warranties offered

"They installed our HVAC system two years ago and they service it every 6 months. We have the furnace checked in the winter and the air conditioner checked in the spring. They are very reliable and professional and they do a great job."
System Installation
264 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Bactronix Corp
Bactronix Corp
4.9(
506
)
Air Ducts & Vents - Clean

Serving Carnegie, PA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Emergency services offered

"We hired Bactronix to clean the HVAC ducts in our house. Technicians Masson and Shawn arrived on time, did their work unobstrusively and efficiently, and answered all my questions politely and fully. They sent over before and after pictures of the ductwork by e-mail afterwards. Their work has made a positive difference to the air quality in the house, and we appreciate their services."
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+19

Response time1 day
6 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Sullivan Super Service Plumbing Heating & Cooling
Sullivan Super Service Plumbing Heating & Cooling
4.2(
1,236
)
Gas Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+47 more

Serving Carnegie, PA and surrounding areas

Approved (Corporate)

In business since 1964

Emergency services offered

Warranties offered

"We were so happy to have Sullivan Super Service (Plumbing, Heating, Cooling) come today to repair our central air conditioning unit and to service our HVAC system. Sullivan's technician, Bob Anderson, was polite, professional and experienced. We greatly appreciated his knowledge and counsel. Our AC has been out for a few days in a current hot spell, and Sullivan was the only company that contacted us. They proved the old saying that in winning, half of the battle is just in showing up and being there. We were not Sullivan customers before, but we are now! Sullivan's service was SUPER!"
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+2

3 neighbors recently requested a quote
Recommended by78%of homeowners
Avatar for Kenders Heating and Air Conditioning LLC
Kenders Heating and Air Conditioning LLC
5.0(
20
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallHeat Pump - Install or Replace+11 more

Serving Carnegie, PA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Emergency services offered

Warranties offered

Kenders Heating & Air Conditioning is a family-owned local business providing installation, repair, and 24/7 emergency services for residential and commercial heating and cooling. Based in Pittsburgh, Pennsylvania, they specialize in air conditioning, furnaces, boilers, and indoor air quality.\n

Indoor unit
Heat pump
Elite Condenser
2- stage furnace
Response time11 hrs
7 neighbors recently requested a quote
Avatar for Brickhaas Plumbing HVAC Services, LLC
Brickhaas Plumbing HVAC Services, LLC
4.7(
174
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Carnegie, PA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Fast and friendly service have also used them for a plumbing issue and they were great on that job also the owner even came out and fixed the a/c issue himself they will be the only company I will call and use"
roof vent drain snaking
sunday emergency water heater change out
laundry tub faucet swapout
sewer line repacement
laundry faucet replacement

+14

Response time5 hrs
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for S & S Climate Systems, LLC
S & S Climate Systems, LLC
4.8(
93
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+15 more

Serving Carnegie, PA and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"Frank met with the estimate! I had no idea I would have the new furnace installation minutes after acceptance of his price. Nine hours dismantling old furnace and new one installed w/ central air. These guys are professional, kind and courteous! The price, quality and service exceeded my expectations. If you need a new furnace to replace the old one or new installation S &S Climate Systems are #1. I met with two other companies whose bid was larger, but S and S offered the same product saving me $1500-$2000, money I put toward upgrading my Electric panel and my sidewalk replacement!! And besides, I made new friends! Again, you owe it to yourselves to give your Heating and HVAC to S and S, because not only do they do good work, but their prices are within your budget range, there was no negotiating, in fact: I gave them a bonus. I was so pleased! Thank you S and S Climate Systems. These guys had everything stocked on their trucks, no time missed leaving the worksite to pickup items. They came prepared and delivered! Great job guys, you will go far! Keep doing what you do! Thank you for the Veterans discount! Semper Fidelis!"
Gallery
Response time6 hrs
Response rate95%
33 neighbors recently requested a quote
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Heating and Air Conditioning questions, answered by experts

Yes, running your air conditioning unit too cold can cause condensation in the air ducts and built up moisture on the air filter, resulting in a breeding ground for mold and mildew. Mold and mildew growth can irritate those with respiratory issues, so it’s best to keep your AC running at a normal temperature.

Window AC units use a fair amount of electricity, but significantly less than central AC systems. Because they are more energy-efficient for cooling individual rooms or small spaces, their usage is comparatively low. On average, a window AC unit consumes between 500 and 1,400 watts, while a central AC system uses over 3,500 watts—meaning a window unit uses about one-third of the energy. This typically translates to a monthly running cost of $15 to $40, although this can vary depending on external factors.

Most AC repair technicians will take between two and six hours to carry out repairs, depending on the work needed and the accessibility of the unit. For example, recharging refrigerant lines should take one to two hours to service, while replacing a compressor, blower fan, or other major components can take five to eight hours. You can ask your AC repair technician how long they expect the job to take, but just in case, you should plan on being home and available for most of the day.

They can, but it’s not as common. Window AC units are much smaller than whole-house systems and less likely to develop refrigerant leaks or similar issues. As a result, you will rarely need to add a new refrigerant, limiting overcharging problems. However, it’s still important to leave refrigerant management in the hands of professionals when window units need work.

If left untreated, a frozen AC unit can lead to costly damage, especially to the compressor and evaporator coils. When ice forms on the evaporator coils, they become brittle and more susceptible to breaking. Plus, a freeze makes your AC system much less efficient, which means it's wasting energy and costing you more in your monthly energy bills.

The Carnegie, PA 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.