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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 Palmer Gas & Oil
Palmer Gas & Oil
4.6(
88
)
Central A/C - InstallHeat Pump - Install or ReplaceBoiler or Radiator Heating System - Install or Replace+47 more

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
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+11

2 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Comfort Air Services
Comfort Air Services
4.3(
22
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceOil Furnace / Forced Air Heating System - Install+10 more

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
HVAC Jobs
HVAC Jobs
HVAC Jobs

+18

Response time2 days
Response rate89%
15 neighbors recently requested a quote
Wentworth Duct Cleaning, LLC
4.9(
53
)
Air Ducts & Vents - Clean

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 rate95%
2 neighbors recently requested a quote
Avatar for Cornerstone IAQ Services, LLC
Cornerstone IAQ Services, LLC
4.9(
72
)
Air Ducts & Vents - Clean

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 Chimney Experts
Chimney Experts
4.9(
142
)
Air Ducts & Vents - Clean

Serving Dover, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Emergency services offered

"The technician was great he diagnosed the problem with my gas fireplace and fixed it right away. I definitely would recommend hiring Chimney and Duct Experts for their service."
Chimney Cap Installation
Smoke chamber before
Chimney Sweep Project
Fireplaces Project
Chimney Sweep Project

+36

Response time4 days
Response rate100%
26 neighbors recently requested a quote
Angell Electric
5.0(
20
)
Electrical Baseboard or Wall Heater - InstallElectrical Baseboard or Wall Heater - RepairThermostat - Install or Replace+1 more

Serving Dover, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Small jobs welcome

"Eric was awesome! Replied to my initial inquiry right away. He fixed my bathroom ceiling fan and replaced some outlets in my bathroom. He checked everything to make sure it was safe. Super friendly and I felt very comfortable. Very reasonable with pricing as well. I would highly recommend Angell Electric! Thank you"
Response time2 days
9 neighbors recently requested a quote
Recommended by27%of homeowners
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Showing 1-10 of 178
Heating and Air Conditioning questions, answered by experts

The difference between a home surge protector and an HVAC surge protector is that an HVAC surge protector is designed to protect the components inside your HVAC unit while a home surge protector is installed near appliances and meant to protect your entire home. There are three tiers of whole-house surge protectors, and they are more expensive to install than HVAC surge protectors.

The cost to add Freon to an AC ranges from $100 to $350. It can increase up to $600 for large AC units requiring much more coolant. The cost also depends on how much refrigerant your unit needs. If only a small amount of Freon leaked out, your cost would be on the lower side. A complete replacement of all the required refrigerant can get expensive.

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.

It’s not customary to tip HVAC technicians, and most professionals won’t expect it. However, it’s a nice way of showing your appreciation for the work they do, especially if they come out in inclement weather or on a weekend or holiday to fix an emergency issue if your heat or AC goes out in extreme temperatures. A good tip would be between 10% to 20% of the total bill, depending on how above and beyond the tech goes for your repair and on the total cost of your HVAC repair or service. For something like a routine tune-up or scheduled maintenance, tips aren’t expected.

Air filters with a high MERV rating, 11 or above, shouldn't cause airflow problems in most residential systems. However, the airflow can be restricted in some HVAC systems if they aren't designed for high MERV ratings. If in doubt, a local duct installer should inspect your ductwork so that you know what your system can handle.

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.