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TRUSTED BY CORNWALL, PA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon128
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Cornwall

Avatar for DuctGurus, LLC
DuctGurus, LLC
4.9(
225
)
Air Ducts & Vents - Clean

Serving Cornwall, PA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"They were prompt and very professional. They kept us informed during the entire process of cleaning our ducts and dryer vent. They also installed an air scrubber and the total cost was several hundred dollars less than the quote we received from an HVAC company. The HVAC company told us we needed mold remediationâ ¦. DuctGurus found no mold. We received great service so we will be using and recommending this company in the future."
HVAC Duct Cleaning
HVAC Duct Cleaning
HVAC Duct Cleaning
HVAC Duct Cleaning
Dryer Duct Cleaning

+190

Response time1 day
Response rate85%
104 neighbors recently requested a quote
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 ReplaceGas Furnace / Forced Air Heating System - InstallHeat Pump - Install or Replace+2 more

Serving Cornwall, PA and surrounding areas

Approved

Super Service Award Winner

In business since 1959

Free estimates

Emergency services offered

"Great service started from calling to schedule the appointment! Received a text reminder before David arrived with his picture, which I thought was a really nice touch. Once he was here, Dave was thorough and spent a good amount of time explaining the maintenance mechanism on our HVAC system (we recently purchased our home and so I was interested in learning more about the UV and filtering system that was installed by the previous owner. Overall, A+. They will be my go to HVAC company for sure."
 Installations
 Technicians
 Office
  Installations
  Technicians

+16

123 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Hoffman Mechanical
Hoffman Mechanical
5.0(
24
)
Central A/C - Service or RepairGas Boiler or Radiator Heating System - RepairGas Furnace / Forced Air Heating System - Repair+7 more

Serving Cornwall, PA and surrounding areas

Approved

In business since 2024

Free estimates

Customers say: True professional

"Woke to a chilly home stemming from a heat-pump issue. Posted my repair service need on Angi and within minutes, received a text and phone call from HOFFMAN MECHANICAL, who was able to come out same day and got my Lennox unit up and running again at a fair cost for both parts and the weekend/after hours service call fee. I would use them again without hesitation, and I am happy to highly recommend this company!"
Bosch install
Bosch install
Response time8 hrs
Response rate89%
32 neighbors recently requested a quote
Avatar for Stahl's Mechanical
Stahl's Mechanical
5.0(
13
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+11 more

Serving Cornwall, PA and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"Stahls Mechanical is a top notch company and I would highly recommend them for any HVAC/plumbing work you have. My a/c went out and they were out within a day and had me up and running again in no time and at a reasonable price. Staff was friendly and knowledgable. Thank you Stahl’s and team for all of your help! Will definitely use you again in the future!!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+13

Response time3 days
Response rate100%
34 neighbors recently requested a quote
Avatar for N. S. Johnson, Inc.
N. S. Johnson, Inc.
4.5(
47
)
Central A/C - Service or RepairCentral Air Cleaner - Repair or ServiceDuctless Mini-split Heating System - Install or Replace+18 more

Serving Cornwall, PA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"I hired NS JOHNSON to install a Climate Master Tranquility 30 geothermal heating and air conditioning system. Their work was very professionally done, and spot on the budget. The installation took a day an a half. The outdoor temperature was in the low 30 degree (f). On completion of the first day they activated the system to assure we had heat for the night. They completed the installation the next day. Iâ  m very impressed with their work and would recommend them to anyone needing this service. They will continue to maintain the system on a yearly basis. I plan on using them for other services."
Recommended by97%of homeowners
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Showing 1-10 of 217
Heating and Air Conditioning questions, answered by experts

No, you should not attempt to replace an AC evaporator coil yourself. This is a complex task that must be performed by a licensed HVAC technician. The process involves handling hazardous and flammable refrigerants, which poses significant safety risks. Attempting a DIY replacement can also cause further damage to your HVAC system and will likely void its warranty. It is necessary to hire a local AC repair professional for this job.

While most air conditioners can last between 10 and 20 years, they will only last this long (or longer) if properly taken care of. Routine maintenance and inspections help keep your AC unit running in tip-top shape but understanding what factors will decrease its lifespan will also help keep your unit running cool.

Some things that shorten your AC’s lifespan include:

  • Extreme outdoor conditions, like high humidity or extensive salt spray 

  • Improper installation

  • Extended run times, either by the unit being too small or the thermostat setting too low

  • Not performing required maintenance

Swamp coolers cost approximately 50 percent less to install than central air conditioners and cost less to run. Operation costs depend on the size of the unit and home, your climate, utility rates in your area, and the system’s efficiency. Swamp coolers use 15 to 35 percent less power than air conditioners.

Yes, ventless portable air conditioners exist, and not all standard portable air conditioners must be vented through a window.

Ventless portable units, often called evaporative coolers, do not have exhaust hoses. They use a water reservoir and a cooling pad to add moisture to the air, making it feel cooler. These units work best in dry climates because humid areas cannot absorb much additional moisture.

For standard portable air conditioners that do require venting, a window is not the only option; they can also be vented through a door, wall, or ceiling. However, it is essential to vent these units properly. Running a standard portable AC without venting it is counterproductive because it needs to expel heat to cool the room. Failing to do so will only increase the room's temperature.

While it's generally safe to stay in a home with a coolant leak if your home is properly ventilated, it's important to have a professional come out to assess the situation right away. You should evacuate your home if you notice any powerful fumes. Additionally, you should leave your home if you are experiencing headaches or dizziness.

The Cornwall, 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.