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TRUSTED BY GREENVILLE, NH HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon295
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Greenville

HOLLIS OIL HEAT SERVICE, LLC

5.00(
1
)
Approved Pro

HOLLIS OIL HEAT SERVICE, LLC

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"I had problems with my boiler and no one else was able to solve it and he was able to solve it right away without any issues. He really took his time and was very thorough with the work."

Allison R on November 2021

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"I had problems with my boiler and no one else was able to solve it and he was able to solve it right away without any issues. He really took his time and was very thorough with the work."

Allison R on November 2021


Prime Time Mechanical, LLC

5.00(
2
)
Approved Pro

Prime Time Mechanical, LLC

5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 years of experience

With over 6 years of experience Prime Time Mechanical, LLC is one of New Hampshire's premier HVAC contractors. We specialize in all types of installations and repairs from gas and oil furnaces, boilers, water heaters, and gas piping. Our staff takes pride in providing our customers with the highest quality of work and customer service. Give us a call today!

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Lori S on October 2019

With over 6 years of experience Prime Time Mechanical, LLC is one of New Hampshire's premier HVAC contractors. We specialize in all types of installations and repairs from gas and oil furnaces, boilers, water heaters, and gas piping. Our staff takes pride in providing our customers with the highest quality of work and customer service. Give us a call today!

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Lori S on October 2019


Avatar for Easy A's Plumbing & Heating, LLC

Easy A's Plumbing & Heating, LLC

4.50(
3
)
Approved Pro

Easy A's Plumbing & Heating, LLC

4.50(
3
)
Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 years of experience

Welcome to Easy A's Plumbing & Heating, LLC. We are excited to exceed your expectations. As experts, we will handle your needs with the high quality expertise that your home or business deserves. We offer competitive prices, and customer satisfaction is our number one priority. Call us now!

"It took much longer than expected, but they were so much more reasonable price wise, it was worth the wait."

Paula S on July 2019

Welcome to Easy A's Plumbing & Heating, LLC. We are excited to exceed your expectations. As experts, we will handle your needs with the high quality expertise that your home or business deserves. We offer competitive prices, and customer satisfaction is our number one priority. Call us now!

"It took much longer than expected, but they were so much more reasonable price wise, it was worth the wait."

Paula S on July 2019


Avatar for Derry Plumbing & Heating

Derry Plumbing & Heating

4.50(
30
)
Approved Pro

Derry Plumbing & Heating

4.50(
30
)
Approved Pro
Customers say: Quality work
36 years of experience
Free onsite estimate

If you�re familiar with plumbing, you know that doing it right takes just the right recipe: two parts job knowledge and three parts skill. At Londonderry Plumbing and Heating, we provide everything you need to secure the perfect plumbing solution, a mixture that will do you right, just like home cooking! No job is too small or too challenging for our dedicated professionals! Londonderry Plumbing and Heating can tackle your most challenging plumbing problems and do so at affordable rates. If you are looking for a plumber who is highly qualified, quick to respond and a pleasure to do business with, give us a call. We look forward to adding you to our list of satisfied customers!

"Great service! Emergency service and done within the day!"

Bonnie S on May 2025

If you�re familiar with plumbing, you know that doing it right takes just the right recipe: two parts job knowledge and three parts skill. At Londonderry Plumbing and Heating, we provide everything you need to secure the perfect plumbing solution, a mixture that will do you right, just like home cooking! No job is too small or too challenging for our dedicated professionals! Londonderry Plumbing and Heating can tackle your most challenging plumbing problems and do so at affordable rates. If you are looking for a plumber who is highly qualified, quick to respond and a pleasure to do business with, give us a call. We look forward to adding you to our list of satisfied customers!

"Great service! Emergency service and done within the day!"

Bonnie S on May 2025


Avatar for Sanford Temperature Control

Sanford Temperature Control

4.86(
11
)
Approved Pro

Sanford Temperature Control

4.86(
11
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
71 local quotes requested

Sanford Temperature Control is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Needed service asap and they went out of their way to accommodate me "

Bob P on July 2025

Sanford Temperature Control is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Needed service asap and they went out of their way to accommodate me "

Bob P on July 2025


"The heat pump was installed and it looked good but was whistling badly. The McGinley son left without any promise of a resolution. Stupidly, I gave him a check for the balance. Next day I called ACIQ customer service and they wanted the phone number of the installer. So I asked Bill M. for his son's phone number, which I'd never had. Very strange, he wouldn't provide the number right away and said maybe after the weekend. Anyway he never provided it. So I stopped payment on the check. When Mr. McGinley realized he wasn't getting paid, he came up to investigate himself. I meet him and we figured out the problem, which we fixed with a piece of tape. I then gave Bill another check for the balance which he later cashed. Subsequently, I asked for the invoice which I needed to submit a rebate application to NHSaves. For weeks I've heard excuses and still have not received an invoice. That is not acceptable for a company listed as an Angi Pro."

Tom A on November 2025

McGinley & Sons: Your trusted Heating and AC Repair experts in New Hampshire. We are a family owned & operated business, with no subcontractors. Our cost is determined by the job. Contact us today!

"The heat pump was installed and it looked good but was whistling badly. The McGinley son left without any promise of a resolution. Stupidly, I gave him a check for the balance. Next day I called ACIQ customer service and they wanted the phone number of the installer. So I asked Bill M. for his son's phone number, which I'd never had. Very strange, he wouldn't provide the number right away and said maybe after the weekend. Anyway he never provided it. So I stopped payment on the check. When Mr. McGinley realized he wasn't getting paid, he came up to investigate himself. I meet him and we figured out the problem, which we fixed with a piece of tape. I then gave Bill another check for the balance which he later cashed. Subsequently, I asked for the invoice which I needed to submit a rebate application to NHSaves. For weeks I've heard excuses and still have not received an invoice. That is not acceptable for a company listed as an Angi Pro."

Tom A on November 2025


"This is my second experience with Joyce Plumbing and Heating. The first time was a new hot water tank. When you have your local city inspector tell you during inspection of the tank installation that "oh, Joyce did it? Then I don't even need to look at the installation...". That was a ringing endorsement!! We then moved to a mini-split heating/cooling system for our house. These guys were just terrific. We had 3 units put into our house and the team worked flawlessly. From Will (our super human sales guy) to Tina in the Joyce P&H office (customer care) to Calvin and his team, we were very well treated, on time and under budget. I highly recommend Joyce Plumbing and Heating and we will be using them again. You should to!!"

Caryl S on August 2021

Looking for top-notch cooling & heating service in Boston? Look no further than Joyce Cooling & Heating Inc. With financing options available and a team of experts ready to assist you, we're here to make your home projects a breeze. Contact us today at [email protected].

"This is my second experience with Joyce Plumbing and Heating. The first time was a new hot water tank. When you have your local city inspector tell you during inspection of the tank installation that "oh, Joyce did it? Then I don't even need to look at the installation...". That was a ringing endorsement!! We then moved to a mini-split heating/cooling system for our house. These guys were just terrific. We had 3 units put into our house and the team worked flawlessly. From Will (our super human sales guy) to Tina in the Joyce P&H office (customer care) to Calvin and his team, we were very well treated, on time and under budget. I highly recommend Joyce Plumbing and Heating and we will be using them again. You should to!!"

Caryl S on August 2021


Avatar for Walshco LLC

Walshco LLC

5.00(
7
)
Approved Pro

Walshco LLC

5.00(
7
)
Approved Pro
Customers say: Quick response
35 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.

"I would recomend this company .They were reasonably priced and professional and courteous. "

Lory M 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.

"I would recomend this company .They were reasonably priced and professional and courteous. "

Lory M on November 2025


"Straight shooter who helped me get the project done without added cost or complexity. Got the job done "

Tim W on November 2025

Want your weekends back! We can help with all your projects large and small. Specializing in all phases of construction, full remodeling, repair & handyman work. Call us today for a free estimate. Now servicing southern New Hampshire and Northern Massachusetts

"Straight shooter who helped me get the project done without added cost or complexity. Got the job done "

Tim W on November 2025


Avatar for Mark Vachon

Mark Vachon

5.00(
22
)
Approved Pro

Mark Vachon

5.00(
22
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
178 local quotes requested

Edit 10/13/20 due to overwhelming demand I am not taking on new work at this time. The best way to reach me directly is to call or text 603.401.4496 or email [email protected]. I am a lifelong Salem, New Hampshire resident, and have been working in the field of home renovations for 20 years. My background in furniture design and fine arts led me into General Contracting, kitchen and bathroom design, handyman services and home remodeling. From "Honey-Do Lists" to full kitchen, bathroom and basement remodels, my reputation for efficient, detail-oriented, and quality workmanship is something I am extremely proud of and strive to maintain. Your home is your biggest asset, and I consider it a privilege when my customers invite me into their homes to repair and renovate them.

"Mark is thorough, precise and extremely neat. Many contractors leave their mess behind but Mark is meticulous! I highly recommend him."

MaryEllen S on November 2019

Edit 10/13/20 due to overwhelming demand I am not taking on new work at this time. The best way to reach me directly is to call or text 603.401.4496 or email [email protected]. I am a lifelong Salem, New Hampshire resident, and have been working in the field of home renovations for 20 years. My background in furniture design and fine arts led me into General Contracting, kitchen and bathroom design, handyman services and home remodeling. From "Honey-Do Lists" to full kitchen, bathroom and basement remodels, my reputation for efficient, detail-oriented, and quality workmanship is something I am extremely proud of and strive to maintain. Your home is your biggest asset, and I consider it a privilege when my customers invite me into their homes to repair and renovate them.

"Mark is thorough, precise and extremely neat. Many contractors leave their mess behind but Mark is meticulous! I highly recommend him."

MaryEllen S on November 2019

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Heating and Air Conditioning questions, answered by experts

Window AC units use a fair amount of electricity during use, but the usage pales in comparison to central units. As a matter of fact, window units use around a third of the amount of energy as a central AC. On average, a window air conditioner costs between $15 and $40 per month to run, though this depends on a number of external factors.

To keep your AC unit in good working condition, you should service your AC unit at least once per year. Your HVAC pro will inspect, clean, and replace parts as necessary. A great DIY option is to clean the evaporator coils every year, preferably before the summer months. Regular maintenance helps avoid costly repairs down the road.

To reset your air conditioner, start by turning it off at the thermostat. Then, shut off power to the AC system at the circuit breaker. Next, find the “reset” button on your AC unit and hold it for three to five seconds. The unit should beep several times. If your air conditioner doesn’t have a reset button, leave the circuit breaker off for 30 minutes. Afterward, turn the power back on at the breaker and program the thermostat to “cool” to test the system.

Good news: Your AC system doesn’t need Freon (a popular refrigerant) added regularly, if ever. Freon only needs to be added when there’s a refrigerant leak; however, it’s not uncommon for a gradual leak to occur every 5 to 15 years. Signs of a refrigerant leak include higher utility bills, increased humidity in the house, weakened AC performance, and a hissing sound from the system.

Is mold in an air conditioner dangerous? Running an air conditioner with mold isn’t safe because it can spread harmful mold spores throughout your home. These spores may cause respiratory problems, allergies, or aggravate asthma in household members and guests. If you suspect there is mold hiding in your air conditioner, it’s best to stop using the HVAC system until the mold is cleaned to avoid health risks and further contamination.

The Greenville, 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.