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TRUSTED BY DOVER, NH HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon156
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Dover

Avatar for Freedom Air Mechanical
Freedom Air Mechanical
4.8(
14
)

Serving Dover, 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
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+36

Response time2 days
6 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Palmer Gas & Oil
Palmer Gas & Oil
4.6(
88
)

Serving Dover, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1932

Free estimates

Emergency services offered

"We have been a Palmer customer for 6 years. The front office and the technicians has always been great to work with. We have been using their AC and Heating Service Plan and on automatic oil and propane fill for years and we have never had an issue. My most recent experience was today for the AC Service Plan. The technician (David) was very polite, experienced, knowledgeable and respectful of our time and home. It’s always a great experience to have maintenance conducted in you home and have the technicians give you expert advice on your heating and AC system. Our AC system is well over 25 years old and still running strong thanks to Palmer. I continue to be impressed with Palmer and will remain a customer for the foreseeable future!"
Additional Photos
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+11

2 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Pure Temp Heating and Cooling, LLC
Pure Temp Heating and Cooling, LLC
5.0(
17
)

Serving Dover, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Credit card accepted

"We love our new Installer Jake from Pure Temp Heating & Cooling and our new AC & Heating System he installed that can be adjusted through the Phone APP. Jake was very knowledgeable and did everything he said he would do. Thanks Jake, for Your Home Services and your Service in the Military."
New Installation
Steam Boiler
Response time8 hrs
Response rate87%
8 neighbors recently requested a quote
Avatar for Comfort Air Services
Comfort Air Services
4.3(
22
)

Serving Dover, NH and surrounding areas

Approved

In business since 2008

Credit card accepted

Offers commercial services

"Patrick called Friday night and showed up at 7:15 AM on a Saturday morning (OMG) to repair a central A/C system that was icing up inside. I'm still waiting to hear from the other 2 companies that were listed in my area. I know they will call Monday which would mean myself and my disabled wife would spend a very uncomfortable weekend and probably longer because most HVAC companies don't work weekends and it usually takes at least a day to schedule an appointment. Not fun when the humidity is 65% and the temp is close to 80. Patrick did a great job, A/C is running like new. Will hire him again and recommend him in a heart beat. Prices are very reasonable. Hire him!"
HVAC Jobs
HVAC Jobs
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HVAC Jobs

+18

Response time2 days
14 neighbors recently requested a quote
Recommended by71%of homeowners
Wentworth Duct Cleaning, LLC
4.9(
53
)

Serving Dover, NH and surrounding areas

Approved

In business since 2015

Free estimates

Customers say: True professional

"Family-owned business,courteous,clean, prompt and on time. Knowledge of what was going on, what to expect and upfront honest. No hidden fees or cost. They will go above and beyond to make sure you’re satisfied. They did an amazing job cleaning our vents and ductwork. Highly recommend and will definitely use them in the future. Jim and Susie"
Response time1 day
Response rate85%
3 neighbors recently requested a quote
Avatar for Cornerstone IAQ Services, LLC
Cornerstone IAQ Services, LLC
4.9(
72
)

Serving Dover, NH and surrounding areas

Approved

In business since 2015

Credit card accepted

Customers say: Quality work

"Cornerstone IAQ is simply excellent. They arrived exactly (to the minute) as they said they would, showed me before and after duct pix, and offered sound advice on other related actions I could take. They are worth every dollar spent. I recommend them to anyone needing their HVAC ducts cleaned. Hats off to Mike and Jason...."
Before Picture Flex Ducting
After Picture Flex Duxting
Before Picture Flex  Ducting
After Picture Flex Ducting
After Picture Hard Ducting

+2

Response time1 day
Recommended by98%of homeowners
Avatar for Walshco LLC
Walshco LLC
5.0(
15
)

Serving Dover, 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 rate96%
7 neighbors recently requested a quote
Avatar for Chimney Experts
Chimney Experts
4.9(
140
)

Serving Dover, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Emergency services offered

Warranties 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 rate87%
36 neighbors recently requested a quote
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Heating and Air Conditioning questions, answered by experts

When first installed, flex ducts shouldn’t cause airflow problems in your home. However, because flex ducts aren’t the sturdiest and require extra support, they lose their durability over time and begin to sag, which can inhibit airflow down the road. Also, if your flex ducts aren’t tight enough, your HVAC could work twice as hard for the same air pressure. If you’re worried about the airflow in your home, a rigid duct may be your best bet.

The best way to save money on HVAC repairs is by regularly having your system inspected and maintained. This can prevent bigger problems and costly repairs and replacements in the future. It’s also smart to buy quality equipment and hire companies that provide warranties on equipment and labor. If you need repairs, you may be able to save money by cashing in on rebates and incentives or keeping the area around your HVAC unit clear to shorten the time your contractor needs to spend in your home.

The top reason to purchase an HVAC maintenance contract is the fact that it ensures you are detecting problems before they turn into expensive fixes. Secondly, this type of contract provides priority service, which is nice if it’s peak busy season. Finally, an HVAC maintenance contract provides discounts on parts and labor for repairs, which can save you a good amount of money if your unit breaks.

When deciding whether to repair or replace your air conditioner, several factors should be considered. It is generally worth repairing the unit if it's less than 10 years old, the warranty is still active, and you're dealing with a one-off issue. Most central AC units last about 15 years, while window units last 8 to 10 years. If your unit is approaching or has surpassed the 10-year mark and requires frequent or costly repairs (e.g., over $5,000), replacement is often the more sensible long-term investment. For older, inefficient, or out-of-warranty units experiencing multiple problems, replacing it is typically the better choice.

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 Dover, 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.