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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon32
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Barnstead, NH

*The Angi rating for Heating And Air Conditioning Service companies in Barnstead, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Barnstead, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on January 16, 2026

Find Heating and air conditioning pros in Barnstead

Avatar for CRS Heating and Cooling, Inc.
CRS Heating and Cooling, Inc.
4.9(
72
)
Ductless Mini-split A/C - Install or ReplaceOil Boiler or Radiator Heating System - InstallCentral A/C - Install+7 more

Serving Barnstead, NH and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"For 4 years we have been unable to get an HVAC specialist to come to our house to address an interior unit leak and those that did come prior could not figure it out. Frustrated, I reached out to Home Advisor and the next day CRS was at our home. They reviewed the situation, contacted the manufacturer and found that an original part had been discarded in installation which was likely causing the leak. A couple days after their first visit - our only first floor a/c was working beautifully (after its installation 6 years ago!). CRS was quick to address, innovative in approach, went the extra mile, professional, and reasonably priced. We couldn't be happier that CRS was able to help us with this longstanding problem."
Response time7 hrs
Response rate86%
2 neighbors recently requested a quote
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Avatar for Bigfoot HVAC
Bigfoot HVAC
4.9(
25
)
Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairGas Boiler or Radiator Heating System - Repair+11 more

Serving Barnstead, NH and surrounding areas

Approved

In business since 2000

Emergency services offered

Warranties offered

"Very professional. Left the work area super clean. Furnace works great. Super nice guy."
Response time1 day
Recommended by92%of homeowners
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Avatar for Freedom Air Mechanical
Freedom Air Mechanical
4.8(
14
)
Central A/C - InstallHeat Pump - Install or ReplaceBoiler or Radiator Heating System - Install or Replace+47 more

Serving Barnstead, NH and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Repairs were excellent and thorough "even well documented". The tech found units low on coolant. He identified and repaired multiple refrigerant leak points. I have dealt with many HVAC contractors over the years and Freedom Air Mechanical is one of the best. I highly recommend."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+36

Response time1 day
3 neighbors recently requested a quote
Recommended by92%of homeowners
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Avatar for Palmer Gas & Oil
Palmer Gas & Oil
4.6(
88
)
Central A/C - InstallHeat Pump - Install or ReplaceBoiler or Radiator Heating System - Install or Replace+47 more

Serving Barnstead, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1932

Free estimates

Emergency services offered

"Palmer Gas & Oil just did an entire replacement of the 20-year-old central HVAC + humidifier + thermostats two-zone system in my home with a new state-of-the-art total system and I could not be more pleased. From start to finish each employee was personable, extremely knowledgeable, very courteous, and the consummate professional. There is truth to the adage that you get what you pay for and I know I got the best. All Gold Stars!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+11

3 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for Mitch Comeau's Plumbing & Heating, LLC
Mitch Comeau's Plumbing & Heating, LLC
5.0(
72
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For BusinessGas Boiler or Radiator Heating System - Repair+13 more

Serving Barnstead, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"I would definitely recommend Mitch Comeau and in fact, Iâ ve already recommended him to my neighbor. Iâ m very pleased with the service he provided. I thought he was trustworthy and his fees are very reasonable."
Our Work
Our Work
Our Work
Response time9 hrs
8 neighbors recently requested a quote
Recommended by60%of homeowners
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Avatar for Action Plumbing Heating And Air
Action Plumbing Heating And Air
4.9(
92
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairDuctless Mini-split Heating System - Install or Replace+23 more

Serving Barnstead, NH and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Excellent plumbers, reasonble pricing and polite. I highly recomend Action Pulumbing, This was replacement of all drain piping inbasement."
Response time1 day
Response rate89%
17 neighbors recently requested a quote
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Wentworth Duct Cleaning, LLC
4.9(
53
)
Air Ducts & Vents - Clean

Serving Barnstead, NH and surrounding areas

Approved

In business since 2015

Free estimates

Customers say: True professional

"I needed the ducts cleaned in our home. Gary went above and beyond. I would highly recommend them. He took the time to explain the whole process and did a thorough inspection of the ductwork when they noticed an issue with one of the ducts. they went above and beyond. I would highly recommend them for all your ductwork cleaning. If I could I would give them 10 stars."
Response time1 day
Response rate95%
4 neighbors recently requested a quote
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Avatar for Heritage Home Service
Heritage Home Service
4.5(
461
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceGas Furnace / Forced Air Heating System - Install+12 more

Serving Barnstead, NH and surrounding areas

Approved (Corporate)

In business since 1988

Free estimates

Emergency services offered

"Customer service and communication was outstanding. The quick response to resolving our problem (hot water heater replacement) was greatly appreciated. Not sure if the 5-star â valueâ rating is appropriate since we didnâ t pursue competitive pricing...we didnâ t bother because they were exceptional on all other fronts."
Generator Installation
Light Fixture Service
Oultet services
Indoor Outlet Service
HVAC Outdoor Unit

+16

Response time1 day
338 neighbors recently requested a quote
Recommended by95%of homeowners
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Avatar for First Choice Installations, LLC
First Choice Installations, LLC
4.7(
30
)
Ducts & Vents - Install or ReplaceOil Boiler or Radiator Heating System - RepairOil Furnace / Forced Air Heating System - Install+11 more

Serving Barnstead, NH and surrounding areas

Approved

In business since 2007

Free estimates

Customers say: Quick response

"They came out the day I spoke with them. They fixed the problem with our furnace. I would recommend them."
Radiant heat
Radiant heat
System 2000 boiler radiant heat job
New boiler
Old Boiler

+11

Response time2 days
5 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Rowell's Services, LLC
Rowell's Services, LLC
4.6(
76
)
Heat Pump - Install or ReplaceDuctless Mini-split Heating System - Install or ReplaceHeat Pump - Repair or Service

Serving Barnstead, NH and surrounding areas

Approved

In business since 1983

Emergency services offered

Credit card accepted

"We had all of our fixtures replace in our tub today by Mike and Mike of Rowellâ s Service they done a outstanding job. They both was extremely nice and helpful, would recommend them to anyone wonderful Company to do business with. Thank again. Dave&Carrie Furber."
Before & After Boiler
B4 & After Boiler2
Response time10 mins
5 neighbors recently requested a quote
Recommended by98%of homeowners
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Showing 1-10 of 162
Heating and Air Conditioning questions, answered by experts

If refrigerant levels are low, it can cause the evaporator coil to freeze up. Low freon causes a drop in pressure, which will make the coil too cold and cause moisture to freeze on the coil. Your system may be low on refrigerant because of a leak. 

Make sure to have maintenance performed twice a year, and contact your local HVAC technician if you suspect your system has low freon levels.

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. 

One of the fastest ways to unfreeze an AC unit is to turn off the unit and, if it’s warm outside, use the fan-only mode to help blow warmer air through the unit to speed up the defrosting process. While it may be tempting to use a hair dryer to defrost the air conditioner, that high heat can damage the coils.

After defrosting, if you can safely solve the issue with a fix like changing the filter, go ahead and do so. Otherwise, call in a pro before turning your AC back on.

As a general rule, you should have your HVAC system professionally serviced at least once a year, though it's best to follow the manufacturer's specific recommendations. Many experts suggest twice-yearly maintenance: once in the spring for the cooling system and once in the fall for the heating system. This is especially recommended for older units, systems with recurring issues, or heat pumps that provide both heating and cooling. Regular service, which can cost between $100 and $550, keeps the system running efficiently, helps prevent costly future repairs, and saves money on utility bills.

A home AC unit provides anywhere from one-half to five tons of cooling and requires approximately two to four pounds of refrigerant per ton of cooling. At approximately five to 10 minutes to fill one pound of refrigerant, a home that requires three tons of cooling will take about six to 12 pounds of refrigerant and approximately 30 minutes to two hours to completely recharge the unit.

The Barnstead, NH 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.

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