Top-rated air conditioning pros.

Get matched with top air conditioning pros in Frederick, PA

Enter your zip and get matched with up to 5 pros

Need a pro for your air conditioning project in Frederick, PA?

Select your specific project to find the pro for you.

Find Air conditioning pros in Frederick

Avatar for Rohrer's One Hour Heating and Air Conditioning
Rohrer's One Hour Heating and Air Conditioning
4.7(
274
)
Ductless Mini-split A/C - Install or Replace

Serving Frederick, PA and surrounding areas

Approved

Super Service Award Winner

In business since 1959

Free estimates

Emergency services offered

"Dave came Monday evaluated my system for repair. I ask for information to replace instead because of a prescient leak and possible over stressed system. Jerry came Tuesday. I decided to place with a 2 1/2 ton unit 3 ton to better fit home needs. I had an air cleaning unit added. I also had mini split unit installed in garage. The four man crew came Wednesday installed very thing plus cleaned the ductwork. I am very pleased. The compressor unit much quieter than the old, hardly hear it. By the way this is all done with the Coronavirus social distance thing. Very one did extremely well."
 Installations
 Technicians
 Office
  Installations
  Technicians

+16

100 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for J.P. Works, LLC
J.P. Works, LLC
4.9(
50
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Frederick, PA and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"JP Works responded immediately to our request for an estimate. Dave did the preliminary inspection and estimate. Very knowledgeable and professional. Jim did a second inspection of our house and provided additional information about the work to be done. Jim and Victor did the installation of a new oil-burning furnace and central air-conditioning unit, as well as removing and disposing the old furnace and duct work. It was a professional job from start to finish. We were amazed at the amount of work that needed to be done, but Jim and Victor made it seem effortless. We are so grateful to finally have the central air-conditioning, just in time for the recent heat wave! We hired JP Works based on numerous positive online reviews and we were not disappointed. We highly recommend them!"
Response time6 hrs
26 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Toto's Air Solutions Duct Cleaning LLC
Toto's Air Solutions Duct Cleaning LLC
5.0(
12
)
Air Ducts & Vents - Clean

Serving Frederick, PA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

Toto's Air Solutions: There's no place like a clean home. We specialize in air duct and dryer vent cleaning to help families breathe fresher, healthier air. Honest, thorough, and reliable. No shortcuts, just results you can trust.\n\nChoose Toto's and you'll see the difference from the very first visit. We don't just clean, we restore comfort, improve efficiency, and give you the peace of mind that your family is breathing safe, healthy air. With our friendly team, upfront pricing, and Oz-worthy attention to detail, you'll know you picked the right company the moment we step through the door.\n\nDon't forget to visit our website for videos of us in action!\n

Past Photos of Work Done
Past Photos of Work Done
Past Photos of Work Done
Past Photos of Work Done
Past Photos of Work Done

+11

Avatar for Horizon Services, LLC (PA)
Horizon Services, LLC (PA)
3.9(
1,721
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Frederick, PA and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"Came out for emergency air conditioning service. Had to shut down air conditioning for a night to thaw out the ice that formed around the unit. We had to put up window units though because it was way too hot in the house to sleep. Originally, we were told we might need to replace our entire unit. After I called back stating our current unit was still under warranty, they came back the next day, and remarkably all we needed was a freon top off. Total cost for the 1/2 cup of Freon and initial visit = $300. I will not be using them again."
Horizon Services Heating/Cooling
Horizon Services Heating/Cooling
Horizon Services Heating/Cooling
Horizon Services Heating/Cooling
Horizon Services Heating/Cooling

+18

28 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Retro HVAC Service & Installation, LLC
Retro HVAC Service & Installation, LLC
5.0(
12
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Service or Repair

Serving Frederick, PA and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"I?ve used Retro a couple times now. Anthony is alway very professional and knowledgeable about what?s going on with my AC system. He?s always about to able identify the problem right away and fix it. Will be calling again in the future if needed"
New Air Conditioning
New Air Conditioning
New Air Conditioning
New Air Conditioning
New Air Conditioning

+7

Response time11 hrs
4 neighbors recently requested a quote
Recommended by16%of homeowners
Avatar for Petro Home Services
Petro Home Services
4.3(
103
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Frederick, PA and surrounding areas

Approved (Corporate)

In business since 1903

Emergency services offered

Warranties offered

"There was a snag at the beginning when they realized, after beginning to dig, that the AC unit was on top of the oil tank and they'd have to call someone in to move it before digging could continue. That delayed things a few days, but thereafter they did a good job of digging and were very careful with our trees. They also took care not to ruin the lawn with the machinery. The new tank and heater were quickly put in the basement with no problems."
Additional Photos
Additional Photos
Additional Photos
Response time6 days
Response rate100%
17 neighbors recently requested a quote
Avatar for PerfecTemp Inc.
PerfecTemp Inc.
4.9(
16
)
Central A/C - Service or Repair

Serving Frederick, PA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Matt was prompt and gave his professional advice at no charge. In the end we donâ t need to install a centralized dehumidifier, but because of his honestly and level of experience we have decided to use this company for all of our future HVAC needs"
Heat Pump
Air Handler
Propane Boiler Installation
Response time4 hrs
Response rate87%
Recommended by83%of homeowners
...
Showing 1-10 of 314
Air Conditioning questions, answered by experts

Replacing an HVAC system does not always include new ductwork. The decision depends on the condition of your existing ducts. If they are in good shape, correctly sized for the new unit, and meet current standards, they can often be reused. However, if the ducts are damaged, poorly designed, or improperly sized, they will likely need to be replaced or upgraded to ensure the new system operates efficiently. An HVAC contractor will assess your ductwork and recommend the best course of action. Typically, ductwork is purchased separately, and a full replacement will add to the overall project cost.

Evaporator coils in HVAC systems typically last around 10 to 15 years. However, their life span can be longer or shorter based on factors like the frequency of your HVAC system usage, whether regular maintenance is performed, and environmental conditions. Regular maintenance, such as HVAC system cleaning and coil inspection, can extend the durability and efficiency of your evaporator coil.

Most HVAC companies recommend against setting your AC below 70 as it could freeze up the system and cause more problems. Regardless of how hot it is outside, there is generally a 20 degree difference between the outside and inside temperatures, so even if it’s 100 degrees outside, your AC will likely not be able to cool your home to 70 degrees.

The outdoor portions of air conditioners are designed to weather the rain, so you don’t need to worry about it. An awning or roof will help protect them from snow or falling debris, which can do more damage. This is true of both window AC and outdoor units for larger systems.

To diagnose a bad HVAC or AC damper, assess the airflow from your vents. For a manual damper, close it, run your system, and check for airflow. If air is still coming through the vents, the damper is likely faulty and needs repair or replacement. For an automatic damper, turn on your HVAC system and monitor the airflow and room temperature. Signs of a problem include low airflow, a room that won't maintain its set temperature, or a drafty feeling. If you suspect a faulty automatic damper, you may need to hire a professional for repairs.

The Frederick, PA homeowners’ guide to air conditioning services

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