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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 RepairDuctless Mini-split Heating System - 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
9 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 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
8 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Everclean Air LLC
Everclean Air LLC
4.8(
44
)
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%
6 neighbors recently requested a quote
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
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Heating and Air Conditioning FAQs, answered by experts

To keep a window air conditioner in good working order, you should clean the filter regularly, inspect the seals, and store the unit properly during the off-season.

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.

If you’re trying to buy a new AC unit, there are a few crucial factors to consider. Look at the cooling capacity, the available warranty, the energy efficiency, and the type of unit. A ductless unit will cost more up front but may be a more viable option if you don’t already have ductwork. Additionally, a unit with better energy efficiency will cost less to run overall, saving you money on your monthly energy bill. 

In some cases, yes, portable air conditioners are worth buying. They’re a relatively affordable option for cooling small spaces. (On average, they cost between $100 and $500 per unit.) Plus, they’re easy to set up, and you can move them around to cool various parts of your home as needed. However, they aren’t the most efficient AC option, and they tend to be noisy.

Common signs of insufficient return air include uneven temperatures, with some parts of your home feeling hotter or colder than others, and noticeable differences in air pressure between rooms. You might also observe that more air is blowing in rooms closer to the AC unit. Leaky air ducts can also be a related issue or clue.

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.