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    Average homeowner rating
  • Verified reviews icon545
    Verified heating and air conditioning services reviews

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

Avatar for Cotti-Johnson Heating-Cooling-Electrical
Cotti-Johnson Heating-Cooling-Electrical
4.7(
168
)
Gas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - InstallDuctless Mini-split Heating System - Install or Replace+1 more

Serving Bellingham, MA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1948

Free estimates

Emergency services offered

"Excellent. 2 perfectionist electricians, Sam and Steve affiliated with Cotti Johnson HVAC & Electrical, completed the comprehensive work with meticulous attention to details in half a day. They are knowledgeable, kind professionals. If I need any electrical work in the future, they are the first to contact in my list."
Navien Install
Backflow
Outdoor Shower
Well Tank Replacement
Filtration Installation

+62

Response time10 hrs
60 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for CMA Heating & Air
CMA Heating & Air
4.9(
40
)
Ductless Mini-split Heating System - Install or ReplaceDuctless Mini-split A/C - Install or Replace

Serving Bellingham, MA and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"We had Chris replace a decades-old gas furnace and electric water heater, as well as install central air conditioning. We talked to a few professionals in HVAC, and Chris seemed to have encyclopedic knowledge of it all. At a very fair price, Chris spent two days having the old stuff professionally removed, getting the new stuff (AC) wired up, and all the new equipment installed. This was a problem-free project from start to finish, and we would strongly recommend Chris to anyone with similar needs."
Response time9 hrs
4 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for G&C Plumbing and Heating, LLC
G&C Plumbing and Heating, LLC
5.0(
93
)
Central A/C - Service or Repair

Serving Bellingham, MA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2005

Small jobs welcome

Credit card accepted

"The G&C team could not have been more pleasant and professional when coming out to fix our heating system. There was a cold front coming in and we needed this fixed ASAP - the G&C team walked us through the repair process and we could be happier!"
Burnham X2 Boiler
Water Heater Upgrade
Water Heater Upgrade
Water Heater Upgrade
Water Heater Upgrade

+16

Response time5 hrs
Response rate100%
11 neighbors recently requested a quote
Avatar for Everclean Air LLC
Everclean Air LLC
4.8(
43
)
Air Ducts & Vents - Clean

Serving Bellingham, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"I wanted to clean a second floor dryer vent hose that was loaded solid with lint. It was worse than I thought! Packed solid! It became evident that this was a messy and dangerous situation as it was a fire hazard. Through Angi I found Everclean and the co. was a perfect fit. HVAC companies don’t do dryer vents. Justin from Everclean was awesome and got the problem straightened out. He even discovered the dryer vent had become disconnected from outside dryer vent door! I can’t fit through the narrow attic hatchway as my shoulders are a bit too wide, so I depended on Justin. Finally, everything is buttoned up, and our clothes now dry in half the time. Cost was moderate and was money well invested. Dryer vent fire danger is now negligible compared to before. Along with neighbor hatred danger. I would hire Everclean again if needed again."
Additional Photos
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+2

Response time7 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Rodenhiser Home Services, Inc.
Rodenhiser Home Services, Inc.
3.9(
377
)
Air Ducts & Vents - CleanGas Furnace / Forced Air Heating System - RepairHeat Pump - Repair or Service+1 more

Serving Bellingham, MA and surrounding areas

Approved (Corporate)

In business since 1928

Free estimates

Emergency services offered

"Rodenhisor did an excellent job fixing my broken furnace. Mike R, Nick R, Adam S provided exceptional high quality service (very nice guys). I initially called another HVAC company that came in but there were too many red flags during the discussion. So, I called Rodenhisor for a second opinion. Rodenhiser were on target with what I needed (immediate and long term), provided high quality service (ie on time, within budget, excellent work, cleaned up after repair and even wore booties to protect my beige carpet). I especially liked being able to make special requests such as a customized configuration that allowed for more storage space and done with a good sense for the aesthetics (ie they made it pretty with regards to the wiring, piping, ducting and outlet switch location, etc). They also noticed that it was a struggle for me to open the sliding door to the filter (which gets stuck) so they added an easy to open spring-loaded door just for me. Lastly, it is good to have a large company staff for customers to access for urgent 24/7 calls (minimizing long waits) regarding heating, AC, plumbing, electrical, renovations, etc. It is like a convenient one-stop shopping service that I can keep going to whenever I need something done."
Inaccurate Heat/AC
Inaccurate Heat/AC
Inaccurate Heat/AC
Response time3 days
10 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Earth Green Dryer Vent & Duct Cleaning
Earth Green Dryer Vent & Duct Cleaning
4.6(
817
)
Air Ducts & Vents - Clean

Serving Bellingham, MA and surrounding areas

Approved

Super Service Award Winner

In business since 1998

Free estimates

Emergency services offered

"Earth Green did an awesome job in cleaning out my HVAC system. Troy and Scotty were very professional and did the job with ease and high quality. I would definitely recommend these guys to anyone!"
 Before cleaning
 After cleaning
Truck Mount Duct Cleaning
Blower Motor Cleaning
Response time5 hrs
110 neighbors recently requested a quote
Recommended by94%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

There are plenty of different not-so-great sounds to hear from your air conditioning unit, like squealing, grinding, water running, excessive gurgling, banging, and clanking. Each of these sounds can indicate a different malfunction with your unit, so it’s important to have a professional assess the problem before it gets worse.

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.

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.

A one-stage air conditioner only has one setting, while a two-stage air conditioner has a high and low setting. A two-stage air conditioner costs between $500 and $2,500 more than a traditional air conditioner, but it has a longer lifespan and helps to increase energy efficiency. To make this decision, you should consider your energy needs and available budget.

The general rule of thumb for figuring out how much AC tonnage you need in your home is that for every 500 to 600 square feet of space you need to cool, you’ll need one ton of AC cooling power. So, a 1,000-square-foot home will need 2 tons of AC power. 

The Bellingham, 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.