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Best heating and air conditioning pros near Charlton, MA

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TRUSTED BY CHARLTON, MA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon63
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Charlton - Updated Nov 2026

Avatar for NV Heating and Air Conditioning
NV Heating and Air Conditioning
4.7(
237
)
Central A/C - InstallCentral A/C - Service or RepairHeat Pump - Install or Replace+14 more

Serving Charlton, MA and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Great company to work with. They're very thorough on what needs to be done to fix a problem and are very professional. So far they've done two repairs to my heating system and were always pleasant and willing to help. Keith and Ron are great guys and I'll be calling them for my HVAC needs."
New 275 gallon oil tank
Williamson oil fired warm air furnace
Fujitsu wall mounted unit
Bosch HVAC system
Fujitsu ceiling cassette

+6

Response time2 days
8 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Dr. Clean-Air Restoration
Dr. Clean-Air Restoration
4.9(
99
)
Air Ducts & Vents - Clean

Serving Charlton, MA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Ruben was professional, discussed project prior to starting. Quote was final price. No surprises. Worked non stop. Protection for Covid 19 done well and we both wore masks the entire time while on site. Very pleased with duct cleaning project and entire process"
Before
After
Response time1 day
1 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Everclean Air LLC
Everclean Air LLC
4.8(
43
)
Air Ducts & Vents - Clean

Serving Charlton, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Great !! Gabriel was on time and went right to work. He took pictures of duct work before and after. He supplied my wife and I N95 masks to wear during the cleaning keeping us safe. Gabriel was a true professional."
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+2

Response time7 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for All HVAC
All HVAC
5.0(
17
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairOil Furnace / Forced Air Heating System - Repair+4 more

Serving Charlton, MA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Nick called within an hour and came to my house at the end of his busy day. He was professional and explained everything as he diagnosed multiple issues with the HVAC unit. He had the system up and running before leaving. Highly recommended."
Response time6 hrs
9 neighbors recently requested a quote
Recommended by87%of homeowners
KERO HVAC
4.6(
32
)
Central A/C - Service or RepairDuctless Mini-split Heating System - Install or ReplaceHeat Pump - Repair or Service

Serving Charlton, MA and surrounding areas

Approved

In business since 2021

Free estimates

Customers say: Quick response

"Thought something was wrong with my Hvac system. Kero hvac called me and came out the next day. He was very honest and gave me great recommendations for my system. I would definitely recommend!"
Response time6 hrs
Response rate94%
Recommended by90%of homeowners
Avatar for ALLSTAR DUCT SOLUTIONS, INC.
ALLSTAR DUCT SOLUTIONS, INC.
4.8(
51
)
Air Ducts & Vents - Clean

Serving Charlton, MA and surrounding areas

Approved

In business since 2020

Free estimates

Offers commercial services

"Their work cleaning our vents and air handler was professionally and thoroughly completed. Good communication on all fronts- scheduling, quoting the cost and explaining the process."
Radon Mitigation
Radon Mitigation
Radon Mitigation
Radon Mitigation
Foundation Sealing

+49

26 neighbors recently requested a quote
Recommended by77%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

You should use a breathable, weather-resistant cover with ventilation. It can be a top cover or a full cover that has mesh to allow airflow. A full, non-breathable cover can cause moisture to build up, leading to rust, frozen parts, and corrosion. A full cover also attracts unwanted critters, such as mice, that can damage the wiring and your unit. If you need to protect your AC unit from falling icicles, choose a sturdy top cover or piece of wood that prevents icicles from damaging your unit.

Unfreezing an AC unit is not a DIY project unless the problem is a dirty air filter. Changing out an air filter is easy for homeowners, but otherwise, trying to repair ductwork, refill refrigerant, or replace a blower fan motor are tasks best left to the pros. Otherwise, you could cause further damage to your cooling system or even harm to yourself.

The length of an AC cycle depends on the settings in your thermostat and the unit you have. Central AC doesn't constantly run at full blast the way that a window unit does. A cooling cycle in most homes is 15 to 20 minutes. Then, the unit stays off for seven to 10 minutes to circulate the cold air in the house before the cycle repeats. It should repeat two or three times per hour. A short cycle lasts less than 10 minutes and then turns off.

It depends on how fast an HVAC technician can resolve the issue. First, if there's a refrigerant leak, you’ll want to keep small children and pets out of the house. Next, you’ll want to turn off the AC unit to ensure no more freon enters your home. Finally, you’ll need an AC technician pro to come to your home and fix the leak immediately. Ultimately, it’s best to leave your home if you discover a freon leak—the risk of exposure is very high, and it’s not worth risking your health to stay.

Yes, a dirty air filter can cause a higher electric bill. That’s because clogged filters make it harder for air to flow through your HVAC system, which forces it to work harder and use more energy. According to the U.S. Department of Energy, replacing dirty filters can save you between 5% and 15% in utility costs.

The Charlton, MA 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.