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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon25
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Fredericktown, PA

*The Angi rating for Heating And Air Conditioning Service companies in Fredericktown, PA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Fredericktown, PA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on July 04, 2026

Find Heating and air conditioning pros in Fredericktown

Avatar for Bactronix Corp
Bactronix Corp
4.9(
489
)
Air Ducts & Vents - Clean

Serving Fredericktown, 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."
Additional Photos
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+19

Response time1 day
8 neighbors recently requested a quote
Recommended by82%of homeowners
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Avatar for Calfo Home Services
Calfo Home Services
4.3(
237
)
Central A/C - Service or RepairAir Ducts & Vents - CleanGas Furnace / Forced Air Heating System - Repair+2 more

Serving Fredericktown, PA and surrounding areas

Approved (Corporate)

In business since 2008

Emergency services offered

Warranties offered

"I work for a property management company and we had a tenant that said her furnace wasn't working (it was freezing outside) and all of my "go-to" HVAC people were unable to get there. So I called Calfo and they rushed someone out there pretty much immediately. As it turned out, there was absolutely nothing wrong with the furnace -- just the tenant. But the technician (whose name escapes me) was very professional in dealing with the tenant and only charged us for the call. I will definitely use this company again."
Red Carpet Service
Customer Interaction
Training
Office Staff
Dirty Filters

+4

Response time8 hrs
88 neighbors recently requested a quote
Recommended by83%of homeowners
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Avatar for MRT Contracting LLC
MRT Contracting LLC
5.0(
9
)
Heat Pump - Install or ReplaceElectric Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install+10 more

Serving Fredericktown, PA and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Emergency services offered

"I COULDN'T AFFORD TO BUY A NEW FURNACE. I'AM A DISABILED VETERAN. LIVING ON A FIXED INCOME. MY FURNACE WENT OUT . I GOT ON LINE TO GET SOME ESTIMITS. THE CHEAPEST I COULD FIND WAS 6000.00JOHN TO OWNER OF MRT HVAC CONTRATORS.CALLED ME.I TOLD HIM MY PROBLEM. IT'S ABOUT TO GET COLD AND WE HAVE NO HEAT.JOHN SAID DON'T WORRIE I WILL HELP YOU OUT .JOHN GOT WITH DON [Provider Name Removed] A FREIND OF HIS. AND THEY DONATED US A BRAND NEW FURANCE OUT THE BOX.TO ME AND MY WIFE.PLUS INSTALLED IT FOR FREE.THERE ARE SOME GOOD PEOPLE IN THE WORLD AND JOHN LUGAILA& DON [Provider Name Removed] ARE THOSE GOOD HEARTED PEOPLE. GOD BLESS THEM. AND ME THE WIFE AND DOG THANK THEM WITH ALL OF OUR HEARTS"
Furnace Replacement
AC Replacement
AC Replacement
AC Replacement
AC Replacement

+9

Response time1 day
Response rate98%
7 neighbors recently requested a quote
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Avatar for Kenders Heating and Air Conditioning LLC
Kenders Heating and Air Conditioning LLC
5.0(
13
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+11 more

Serving Fredericktown, 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
10 neighbors recently requested a quote
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Avatar for Ace Handyman Services South Pittsburgh
Ace Handyman Services South Pittsburgh
4.5(
356
)
Thermostat - Install or ReplaceThermostat - Repair or Reprogram

Serving Fredericktown, PA and surrounding areas

Approved

In business since 2004

Warranties offered

Credit card accepted

"I've used the service 4 times. The quality of work was great and they're nice people."
Additional Photos
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Additional Photos

+52

Response time1 day
Response rate100%
Recommended by90%of homeowners
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Avatar for Royal Plumbing, Heating and Cooling, LLC
Royal Plumbing, Heating and Cooling, LLC
4.4(
8
)
Thermostat - Repair or Reprogram

Serving Fredericktown, PA and surrounding areas

Approved

In business since 2022

Free estimates

Small jobs welcome

"Excellent service, professional. Serviced us within a day. Professional and courteous. Reasonably priced. Would hire him again for HVAC services"
Response time20 mins
Recommended by100%of homeowners
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Avatar for H&S Projects, LLC
H&S Projects, LLC
5.0(
11
)
Thermostat - Install or ReplaceThermostat - Repair or Reprogram

Serving Fredericktown, PA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Credit card accepted

Customers say: True professional

"Should have made this review last year when the work was done. Doesn't really have the option to pick what I needed done. I requested my porch columns to replaced. He gave me his recommendation as to what he would do. He was extremely nice to work with. He even let me hang around to ask questions while he did the job so I could learn a little bit."
1 neighbors recently requested a quote
Recommended by36%of homeowners
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Avatar for Aire Serv of South Hills Pittsburgh
Aire Serv of South Hills Pittsburgh
New to Angi
Central A/C - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+47 more

Serving Fredericktown, PA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

At Aire Serv® of South Hills Pittsburgh, heating and air conditioning services are our specialty. Our friendly and knowledgeable service professionals are happy to answer any questions you may have and recommend the best service options for you. From tune-ups and maintenance to heater repair and air conditioning replacement, we provide services that keep the air you breathe clean and and keep your home or business at the perfect temperature.

2 neighbors recently requested a quote
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Heating and Air Conditioning questions, answered by experts

Modern AC leak sealants work as a temporary measure to stop refrigerant leaks. You can purchase them at most home improvement stores or on online. When using an AC leak sealant, keep in mind that it’s only a temporary solution, so you’ll still need to hire a pro to install a replacement part as soon as possible.

Yes, it is possible. An electrical fire can break out if the compressor has inadequate ventilation. When it overheats but doesn't have a proper thermal cutout, this can cause the motor to short-circuit and catch fire. This risk is exacerbated if flammable materials, like dust and fallen leaves, are clogging the unit. The compressor overheating won't start a fire by itself, but poor maintenance and installation can increase the risk once it hits its breaking point and short-circuits.

If you know how to identify supply and return ducts, you’ll find that only the supply ducts will have dampers. Although your return ducts can have dampers, it’s not common. If you have one return duct that is pulling in too much air, adding a damper to it can help with overall system performance. However, dampers on return ducts are not a necessary addition for most homes.

There are a few ways to determine if a vent is open or closed. You can inspect the vent and examine the position of the fins. If there are spaces between them, the vent is open. If the fins are flat and touching, the vent is closed. You can also stand under the vent when the system is running to see if you feel air flowing through it.

Whether an HVAC damper should be open or closed depends on the season, the zone it controls, and the temperature in that zone. In the summer, open upstairs dampers and close lower-level dampers to get the most efficient cooling possible. In the winter, do the opposite. Cool air will naturally flow down to lower levels, while warm air will rise. This keeps your system from working harder and helps prevent common AC problems.

The Fredericktown, 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.

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