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TRUSTED BY ALSTEAD, NH HOMEOWNERS

  • Average homeowner rating star icon3.9
    Average homeowner rating
  • Verified reviews icon25
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Alstead

Avatar for A2K Electric, LLC

A2K Electric, LLC

5.00(
5
)
Approved Pro

A2K Electric, LLC

5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

We take great pride in offering the best possible experience with our expertise, quality, and customer service. In order to understand the needs and expectations of our clients; we take great care to work and communicate with everyone in a professional manner. It is our mission to exceed our clients expectations by providing excellent workmanship and complete customer satisfaction, from the start of each project to its completion. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Job was absolutely fantastic. Will be hiring them again with my next project."

Brenda N on August 2023

We take great pride in offering the best possible experience with our expertise, quality, and customer service. In order to understand the needs and expectations of our clients; we take great care to work and communicate with everyone in a professional manner. It is our mission to exceed our clients expectations by providing excellent workmanship and complete customer satisfaction, from the start of each project to its completion. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Job was absolutely fantastic. Will be hiring them again with my next project."

Brenda N on August 2023


Avatar for Walshco LLC

Walshco LLC

5.00(
6
)
Approved Pro

Walshco LLC

5.00(
6
)
Approved Pro
Customers say: Quick response
10 local quotes requested
1 years of experience

WalshCo specializes in safe, reliable, and code-compliant oil tank, oil boiler, and oil furnace installations. We handle everything from old-tank removals and new system installs to full heating system upgrades. Our team focuses on clean workmanship, honest communication, and fast turnaround times—so your home stays warm, efficient, and protected. Whether it’s a brand-new oil tank, a high-efficiency boiler replacement, or a full furnace changeout, we bring expert service and New England craftsmanship to every job. Your safety, comfort, and satisfaction come first.

"They did great job i will definitely hire again."

Eleandro C on November 2025

WalshCo specializes in safe, reliable, and code-compliant oil tank, oil boiler, and oil furnace installations. We handle everything from old-tank removals and new system installs to full heating system upgrades. Our team focuses on clean workmanship, honest communication, and fast turnaround times—so your home stays warm, efficient, and protected. Whether it’s a brand-new oil tank, a high-efficiency boiler replacement, or a full furnace changeout, we bring expert service and New England craftsmanship to every job. Your safety, comfort, and satisfaction come first.

"They did great job i will definitely hire again."

Eleandro C on November 2025


Avatar for Action Plumbing Heating And Air

Action Plumbing Heating And Air

4.92(
83
)
Approved Pro

Action Plumbing Heating And Air

4.92(
83
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
80 local quotes requested

Action Plumbing, Heating, and Air provides prompt and reliable services to homeowners and businesses. We are fully licensed, bonded, and insured and able to repair or replace any plumbing or heating fixture inside or outside of your home or business. We stand behind our products and services by installing only quality materials and hiring only state licensed plumbers. At Action, we pride ourselves on practicing the highest standards in the business to ensure our customers are provided the best service possible. Take Action against your plumbing or heating problems and call Action! (833) 732-2288

"Zach from action was great, he was very professional, friendly and efficient, and did great work. I would 100% use action again based on my experience with Zach and the quality of work."

Wyatt M on August 2025

Action Plumbing, Heating, and Air provides prompt and reliable services to homeowners and businesses. We are fully licensed, bonded, and insured and able to repair or replace any plumbing or heating fixture inside or outside of your home or business. We stand behind our products and services by installing only quality materials and hiring only state licensed plumbers. At Action, we pride ourselves on practicing the highest standards in the business to ensure our customers are provided the best service possible. Take Action against your plumbing or heating problems and call Action! (833) 732-2288

"Zach from action was great, he was very professional, friendly and efficient, and did great work. I would 100% use action again based on my experience with Zach and the quality of work."

Wyatt M on August 2025


Avatar for Gary Jackson Heating Services

Gary Jackson Heating Services

4.38(
13
)
Approved Pro

Gary Jackson Heating Services

4.38(
13
)
Approved Pro
Customers say: Quick response
12 local quotes requested
19 years of experience

Gary Jackson Heating Services is family-owned and operated right here in Cheshire County, NH. Since our company opened its doors in 2006, we’ve treated every customer like they were a part of our family. Other companies may offer similar services, but our services are the best, and come with a personal touch. We specialize in oil and propane burner service & installation as well as air conditioning servie & installation in the Cheshire County area. We are fully licensed and insured in the State of New Hampshire and EPA Lead-Safe certified. Our philosophy is delivering honest and respectful service while exceeding the customer’s expectations. We have over 40 years of combined experience providing seasonal tune-ups, repairs to existing oil/propane furnaces, installation of energy efficient oil/propane furnaces, and repairs/installations of oil/propane/electric hot water heaters. We also install and repair solar panels.

"They were friendly, prompt, and diagnosed the problem to a complicated system 2000 boiler."

Dana H on July 2025

Gary Jackson Heating Services is family-owned and operated right here in Cheshire County, NH. Since our company opened its doors in 2006, we’ve treated every customer like they were a part of our family. Other companies may offer similar services, but our services are the best, and come with a personal touch. We specialize in oil and propane burner service & installation as well as air conditioning servie & installation in the Cheshire County area. We are fully licensed and insured in the State of New Hampshire and EPA Lead-Safe certified. Our philosophy is delivering honest and respectful service while exceeding the customer’s expectations. We have over 40 years of combined experience providing seasonal tune-ups, repairs to existing oil/propane furnaces, installation of energy efficient oil/propane furnaces, and repairs/installations of oil/propane/electric hot water heaters. We also install and repair solar panels.

"They were friendly, prompt, and diagnosed the problem to a complicated system 2000 boiler."

Dana H on July 2025



Avatar for Bradford Home Services

Bradford Home Services

No reviews yet

Bradford Home Services

No reviews yet
1 years of experience

Bradford Home Services is your personal maintenance company for your home, condo, rental property, or seasonal property! Born from our sister company Bradford Construction Management, you can trust your home is being reviewed by seasoned home builders! We have over 70 years of experience in the residential construction market, building high end homes, from design to finish. Take advantage of our bi-annual assessments for only $25/Month! We will review your whole home Exterior, Interior, plumbing, electrical, heating etc! we will then send you a detailed report with pictures, videos, and recommendation on fixes! But it doesn't stop there, we can price and repair any aspect of your home!

Bradford Home Services is your personal maintenance company for your home, condo, rental property, or seasonal property! Born from our sister company Bradford Construction Management, you can trust your home is being reviewed by seasoned home builders! We have over 70 years of experience in the residential construction market, building high end homes, from design to finish. Take advantage of our bi-annual assessments for only $25/Month! We will review your whole home Exterior, Interior, plumbing, electrical, heating etc! we will then send you a detailed report with pictures, videos, and recommendation on fixes! But it doesn't stop there, we can price and repair any aspect of your home!


G&C Heating Solutions

No reviews yet

G&C Heating Solutions

No reviews yet

We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!

We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!



Boulder Ridge Mechanical

No reviews yet

Boulder Ridge Mechanical

No reviews yet

Boulder Ridge Mechanical specializes in new installations, unit replacement, service work, and preventative maintenance on all heating and cooling equipment. With experience in boilers, cooling towers, chillers, rooftop units, geothermal systems, VRF systems, furnaces, and mini split systems. We got you covered. We pride ourselves in doing the job right once with a great attitude and great customer service

Boulder Ridge Mechanical specializes in new installations, unit replacement, service work, and preventative maintenance on all heating and cooling equipment. With experience in boilers, cooling towers, chillers, rooftop units, geothermal systems, VRF systems, furnaces, and mini split systems. We got you covered. We pride ourselves in doing the job right once with a great attitude and great customer service


Russell Brothers

No reviews yet

Russell Brothers

No reviews yet

We are a small company located in the center of keene that specializes in mini split installations we provide other services but specialize in mini split installs.

We are a small company located in the center of keene that specializes in mini split installations we provide other services but specialize in mini split installs.

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Heating and Air Conditioning questions, answered by experts

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.

If you have central air conditioning, it’s fine to run your AC all day if that’s what you want—as long as the AC unit is in good condition. But if your AC runs constantly when you don’t want it to, there may be a problem with your system (like the ones we’ve mentioned above). Window AC units and wall air conditioners aren’t as powerful as central AC, so you should only run those kinds of air conditioners for eight to 12 hours at a time.

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.

Your AC might not cool after a power outage because of a tripped circuit breaker, blown fuse, or damage to the compressor or capacitor. If you notice your AC not working after a power outage, in most cases, the breaker has tripped or the system has built-in brownout and blackout protection. Reboot the AC by turning it off at the thermostat, resetting the circuit breaker, and waiting 30 minutes to turn the AC on again. 

You may be able to clean mold from your air conditioner in some cases. If the mold growth only takes up a small area, you can use either vinegar or bleach mixed with water to remove it. Larger areas of mold should be left to the professionals, though. It's also a good idea to leave mold removal to the pros if you are sensitive to mold or have asthma. 

The Alstead, 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.