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Verified Reviews for Air Conditioning pros in Harmony, PA

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

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

Last update on July 23, 2026

Find Air conditioning pros in Harmony

Mullen Heating and Air Conditioning
4.6(
205
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+3 more

Serving Harmony, PA and surrounding areas

Approved

In business since 1988

Emergency services offered

Warranties offered

"John stopped one day to quote us a price, we arranged for the work and a few days later our new furnace and AC units were installed. John's helper arrived promptly, removed our old furnace and AC unit and installed the new one along with a new air cleaner, new thermostat and all new piping. The job was competed professionally and in one day. And everything was cleaned up before he left. We did have one small issue with a leaky condensate drain pipe which was quickly remedied the same day we discovered it. I would recommend John Mullen Home Repair to anyone. The best part is that he is a local business and we were really pleased with to deal with someone local."
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Response time2 days
Response rate100%
11 neighbors recently requested a quote
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Avatar for ARS - Pittsburgh
ARS - Pittsburgh
4.5(
196
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Harmony, PA and surrounding areas

Approved (Corporate)

In business since 1975

Emergency services offered

Warranties offered

"Answered in a timely fashion to schedule and provide a quote. They were able to even install the following day. Everyone was friendly, they did a fantastic job with installation of a new AC and furnace."
System Installation
315 neighbors recently requested a quote
Recommended by80%of homeowners
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Avatar for Air Systems Mechanical Contracting, Inc.
Air Systems Mechanical Contracting, Inc.
4.6(
54
)
Central A/C - InstallCentral A/C - Install - For BusinessDuctless Mini-split A/C - Install or Replace

Serving Harmony, PA and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"Because our AC was not working and you guys were busy and our scheduled install date was a week away, John Yost had a service tech come the next day and try and fix or charge our old AC, It didn't work but that was very nice. Our new AC was installed by Greg or Craig (forgot his name). He did a great job. Then we had a heating flew problem that leaked water from a heater install from 2006. John another service tech came out at no charge to us and replaced the defective elbow. You guys are the best."
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%
6 neighbors recently requested a quote
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Avatar for Wade Heating & Cooling Inc
Wade Heating & Cooling Inc
4.6(
152
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Harmony, PA and surrounding areas

Approved

In business since 1982

Free estimates

Emergency services offered

"Had wade install a Mitsubishi Mini Split with 4 ceiling units on the 2nd floor to assist with heating and cooling issues. The whole process was easy from beginning to end with very clear and quick communication. Also had them repair an existing system at the same time that was quick, hassle free and got me fixed up properly. I want to especially thank Lonnie, Mr Wade and the Installers for their expertise and professionalism along the way. I am extremely satisfied with the Mitsubishi units that were installed and would highly recommend their services!!!"
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Response time3 days
Response rate100%
12 neighbors recently requested a quote
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Avatar for Bactronix Corp
Bactronix Corp
4.9(
488
)
Air Ducts & Vents - Clean

Serving Harmony, PA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Emergency services offered

"I had the crew of Glenn, Brenden &Josiah to clean my air ducts. They were very clean and efficient. They explained everything and pointed out mistakes in the construction of my ducts with cold air returns. They also left information for UV purifier for my son’s allergies to review. I liked the fact that the work was hospital grade."
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+19

Response time1 day
10 neighbors recently requested a quote
Recommended by83%of homeowners
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Avatar for MRT Contracting LLC
MRT Contracting LLC
5.0(
9
)
Central A/C - Install - For Business

Serving Harmony, 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%
6 neighbors recently requested a quote
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Avatar for Cleaner Than Clean
Cleaner Than Clean
4.9(
57
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Harmony, PA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

reliability and dependable \nwe clean your home and business like we own it!\n\n

Response time10 hrs
2 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for Lawrence Plumbing, LLC
Lawrence Plumbing, LLC
4.3(
16
)
Central A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Harmony, PA and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"The team quickly made an honest evaluation and checked for safety and upkeep without need to replace water heater. Just charged minimum service call."
Tankless Water Heaters
HVAC Install
HVAC Install
HVAC Install
HVAC Install

+63

16 neighbors recently requested a quote
Recommended by80%of homeowners
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Avatar for Advantage Remediation Services
Advantage Remediation Services
5.0(
5
)
Air Ducts & Vents - Clean

Serving Harmony, PA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a locally owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today, and we look forward to working with you!

My Jobs
My Jobs
My Jobs
My Jobs
My jobs

+10

Response time9 hrs
Response rate96%
14 neighbors recently requested a quote
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Air Conditioning questions, answered by experts

Yes, having mismatched evaporator and condenser coils in your AC system can lead to serious issues. For instance, it can result in higher monthly energy costs as the system runs longer to compensate for the mismatch. This mismatch can also put extra stress on the system, compromising its efficiency and longevity. 

Along with that, mismatched coils can lead to higher temperatures and humidity levels in the home. What’s more, using coils of different sizes may violate the manufacturer's warranty, as they are designed to work synergistically, and any mismatch could lead to repairs and system failure.

It depends on the type of AC unit and the extent of the mold growth. For example, if you have a small amount of mold in your central air conditioner, it’s worth cleaning it to protect your HVAC system and your health. In situations like these, you can often remove the mold yourself in a couple of hours. On the other hand, if you have a portable AC unit with a severe mold problem, it makes more sense to buy a new one. On average, replacing a portable AC unit costs $100 to $500.

Trick question: There is no difference between an AC and a furnace blower motor. Whether you have central air and heat or just one of these, the same blower motor carries hot and cold air throughout the ductwork in your home. Certain systems may have separate blower motors for the AC and furnace, but each serves the same function.

If possible, avoid placing furniture in front of a return air vent. A blocked air vent can cause your HVAC system to use more energy, which in turn can lower the life span of your unit and raise your energy bill. Furniture can also trap hot or cold air, damaging your furniture or appliances. 

Professional duct installers suggest leaving between six and 12 inches of space in front of an air return vent. If you must place furniture in front of a return air vent, try to aim for putting furniture over a floor vent instead of in front of a wall vent, and avoid draping curtains over any vent system.

Florida rooms can have heat or air conditioning, although not all do. These rooms can be added to the existing HVAC system or use a mini-split system, or they may just use a ceiling fan or the breeze from the windows for cooling. Florida rooms with air conditioning often have glass windows to keep the cool inside instead of just mesh screens.

The Harmony, PA homeowners’ guide to air conditioning services

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

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