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TRUSTED BY NELSON, NH HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon42
    Verified heating and air conditioning services reviews

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

*The Angi rating for Heating And Air Conditioning Service companies in Nelson, 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 Nelson, 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 15, 2026

Find Heating and air conditioning pros in Nelson

Avatar for Everclean Air LLC
Everclean Air LLC
4.8(
43
)
Air Ducts & Vents - Clean

Serving Nelson, NH 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."
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+2

Response time7 hrs
Response rate100%
5 neighbors recently requested a quote
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Avatar for Walshco LLC
Walshco LLC
5.0(
15
)
Oil Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install - For BusinessOil Furnace / Forced Air Heating System - Install

Serving Nelson, NH and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Brady and Casey are an awesome team. They came a long distance when the locals couldn't or wouldn't. They're friendly, extremely knowledgeable and if they were closer, they would be our regular furnace experts!"
roth 275
roth 275
Roth 160 Gallon Tank
Response time9 hrs
Response rate100%
26 neighbors recently requested a quote
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Avatar for McGinley & Sons
McGinley & Sons
3.8(
24
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceHeat Pump - Install or Replace+19 more

Serving Nelson, NH and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Good job at a good price"
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+5

64 neighbors recently requested a quote
Recommended by56%of homeowners
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Avatar for Chimney Experts
Chimney Experts
4.9(
141
)
Air Ducts & Vents - Clean

Serving Nelson, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Emergency services offered

"We needed chimney sweep & minor repairs. Scheduling was easy and the guys who showed up were on time and very professional. Work was done well and we’re very happy, will be calling them for all future work on our chimney and HVAC."
Chimney Cap Installation
Smoke chamber before
Chimney Sweep Project
Fireplaces Project
Chimney Sweep Project

+36

Response time4 days
Response rate100%
20 neighbors recently requested a quote
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Avatar for County Line Plumbing and Heating
County Line Plumbing and Heating
5.0(
11
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For BusinessOil Boiler or Radiator Heating System - Install+1 more

Serving Nelson, NH and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"Justin at County Line Plumbing and heating came out shortly after I called the office. Due to my leaking 50 gallon water heater started leaking! He added the situation and installed a new Rinnai on demand water heater later that day!!! Not only was the price fair, but he explained everything every step of the way! Highly recommend 10 out of 10"
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Recommended by18%of homeowners
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Monadnock Electric
4.8(
21
)
Ductless Mini-split A/C - Install or ReplaceThermostat - Install or ReplaceThermostat - Repair or Reprogram

Serving Nelson, NH and surrounding areas

Approved

In business since 1977

Free estimates

Emergency services offered

"Matthew and Austin from Monadnock Electric did an outstanding job for our church. They installed 2 Ethernet cables each about 280 feet in length so that we received direct connection to the Internet. They were neat and careful and made sure our computer and live streaming our services was working. They were very helpful. Highly recommend."
Response time9 hrs
6 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for AS Plumbing & Heating LLC
AS Plumbing & Heating LLC
5.0(
5
)
Electric Boiler or Radiator Heating System - Install

Serving Nelson, NH and surrounding areas

Approved

Free estimates

Credit card accepted

Offers commercial services

"The new walk-in shower looks and works great! I would definitely recommend AS Plumbing and Heating!"
4 neighbors recently requested a quote
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Avatar for A2K Electric, LLC
A2K Electric, LLC
5.0(
5
)
Electrical Baseboard or Wall Heater - InstallThermostat - Install or Replace

Serving Nelson, NH and surrounding areas

Approved

In business since 2022

Free estimates

Small jobs welcome

"Andy came right out and was very professional, answered all our questions and did an outstanding job. We highly recommend A2K Electrical."
New Panel Install
Recommended by100%of homeowners
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Heating and Air Conditioning questions, answered by experts

Swamp coolers cost approximately 50 percent less to install than central air conditioners and cost less to run. Operation costs depend on the size of the unit and home, your climate, utility rates in your area, and the system’s efficiency. Swamp coolers use 15 to 35 percent less power than air conditioners.

To diagnose a bad HVAC or AC damper, assess the airflow from your vents. For a manual damper, close it, run your system, and check for airflow. If air is still coming through the vents, the damper is likely faulty and needs repair or replacement. For an automatic damper, turn on your HVAC system and monitor the airflow and room temperature. Signs of a problem include low airflow, a room that won't maintain its set temperature, or a drafty feeling. If you suspect a faulty automatic damper, you may need to hire a professional for repairs.

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.

Yes, high-efficiency models reduce environmental impact with lower energy use.

Running a window air conditioner unit costs about $0.06 to $0.88 per hour. Choosing the correct size air conditioner can help it run more efficiently.

The Nelson, 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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