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TRUSTED BY MILTON, NH HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon76
    Verified heating and air conditioning services reviews

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

*The Angi rating for Heating And Air Conditioning Service companies in Milton, 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 Milton, 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 July 14, 2026

Find Heating and air conditioning pros in Milton

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 Milton, NH and surrounding areas

Approved

In business since 2000

Emergency services offered

Warranties offered

"He was able to fit me in the same day I contacted him. Prices are incredibly fair. He works fast to set the parts needed and to schedule getting them installed to get you up and running. I'd highly recommend bigfoot HVAC for all your heating needs"
Response time1 day
Recommended by92%of homeowners
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Avatar for Freedom Air Mechanical
Freedom Air Mechanical
4.8(
14
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+47 more

Serving Milton, 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."
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+36

Response time1 day
Recommended by92%of homeowners
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Avatar for Granite State Refrigeration Services LLC
Granite State Refrigeration Services LLC
5.0(
10
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallDuctless Mini-split Heating System - Install or Replace+5 more

Serving Milton, NH and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Amazing service! very knowledgeable, clean work and super respectful! if you find yourself needing any help when it comes to your heating or Air Conditioning system, call Keenan without a doubt."
Living Room Unit a 12K BTU
The 2 Zone Outdoor Unit
2 Outdoor Units
Heating & A/C Project
Heating & A/C Project

+56

Response time5 days
Response rate100%
5 neighbors recently requested a quote
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Avatar for Palmer Gas & Oil
Palmer Gas & Oil
4.6(
89
)
Central A/C - InstallDucts & Vents - Install or ReplaceBoiler or Radiator Heating System - Install or Replace+47 more

Serving Milton, 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
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+11

2 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for Barrington Solutions Plumbing & Heating LLC
Barrington Solutions Plumbing & Heating LLC
4.8(
12
)
Gas Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - RepairGas Boiler or Radiator Heating System - Install+9 more

Serving Milton, NH and surrounding areas

Approved

In business since 2024

Free estimates

Small jobs welcome

"I finally got to build my dream garage to store all my tools and have a cool hangout on Friday nights with the boys n a couple coors. Chris came and did everything from the bathroom and the heating system. I will definitely be calling him back to add a mini split in the future. He was professional, punctual and clean. Very knowledgeable you can tell he cares about his clients."
Granite Ridge
Brook hill development
Sanborton
Derry
2.5 bathroom modular

+39

39 neighbors recently requested a quote
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Avatar for Heritage Home Service
Heritage Home Service
4.5(
464
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallOil Furnace / Forced Air Heating System - Install+12 more

Serving Milton, 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
398 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for LaPlante Electric, Inc.
LaPlante Electric, Inc.
4.2(
77
)
Heat Pump - Install or ReplaceHeat Pump - Install or Replace - For Business

Serving Milton, NH and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

"They did a great job installing my heat pumps thank you"
Mitsubishi Heat Pump
Mitsubishi Heat Pump Condenser
Mitsubishi Ceiling Cassette
Mitsubishi Low Wall Unit
Response time3 days
Response rate90%
45 neighbors recently requested a quote
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Avatar for Angell Electric
Angell Electric
5.0(
30
)
Electrical Baseboard or Wall Heater - InstallElectrical Baseboard or Wall Heater - RepairThermostat - Install or Replace+1 more

Serving Milton, NH and surrounding areas

Approved

In business since 2019

Credit card accepted

Offers commercial services

Angell Electric is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you! \n \nCleaner \ntrust worthy \nfair pricing compared to others \nPanel upgrades are an opportunity help \n \nM-F 7-7 \n \nSat 8-5

Project Photos
3 neighbors recently requested a quote
Recommended by17%of homeowners
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Avatar for Bob Daniels Electric
Bob Daniels Electric
4.5(
46
)
Electrical Baseboard or Wall Heater - InstallElectrical Baseboard or Wall Heater - RepairThermostat - Install or Replace

Serving Milton, NH and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Professional, courteous workers. Cleaned up the work areas."
Untitled Gallery 1
Response time6 hrs
6 neighbors recently requested a quote
Recommended by97%of homeowners
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Heating and Air Conditioning questions, answered by experts

Split systems are the most common type of HVAC system. Split systems have two main units: an indoor one and an outdoor one. These units work together to pull in air, heat or cool it, and distribute it throughout your home. Other popular types of HVAC systems include hybrid systems and packaged heating and air systems.

Your central A/C unit should be professionally serviced and inspected at least once a year to ensure it operates properly and efficiently. This is best done before the peak cooling season. A full-service inspection by a qualified pro will typically include checking safety components for issues like carbon monoxide leaks, verifying cooling components and coolant levels, and inspecting electrical parts like fuses and wiring. Regular servicing enhances efficiency, mitigates potential problems, and maintains optimal performance. Because AC systems contain hazardous refrigerant, professional handling is essential.

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. 

Ideally, an AC system should never need more Freon (a popular refrigerant) because it circulates in a closed loop. However, refrigerant leaks are not uncommon and may occur gradually over 5 to 15 years. If your system has a leak, it will need to be topped up in a process known as an AC recharge. Signs of a refrigerant leak include weakened AC performance, increased humidity in your home, higher utility bills, and a hissing sound from the unit. The cost of an AC recharge will depend on the size and type of your AC unit, as well as the type of refrigerant it uses.

Here’s how AC professionals will clean your AC coils:

  1. Unplug the AC unit or turn off the breaker to the unit in your circuit breaker box.

  2. Remove the faceplate.

  3. Spray a vacuum hose attachment or compressed air can to remove debris, dust, dirt, and grime.

  4. Use a soft-bristled fin comb to remove stubborn caked-on debris.

  5. Use the vacuum hose to suck up any extra debris.

  6. Take a coil-safe cleaning solution and spray it onto the coils. Try to choose a no-rinse solution.

  7. Let the solution sit for at least 15 minutes.

  8. Gently wipe away loosened grime and debris with a microfiber cloth.

  9. Reattach the faceplate, plug in your AC system, or turn the breaker back on.

The Milton, 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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