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Avatar for Freedom Air Mechanical
Freedom Air Mechanical
4.8(
14
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

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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Additional Photos

+36

Response time1 day
3 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Pure Temp Heating and Cooling, LLC
Pure Temp Heating and Cooling, LLC
5.0(
18
)
Central A/C - InstallCentral A/C - Install - For Business

Serving Dover, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Credit card accepted

"This was our second appointment......Jake was prompt, courteous and efficient. Reasonable cost too! He cleaned one of the mini-split units in record time. Then he found the leak in the system that's been a problem. Highly recommended! Appreciate your work and thank you for your Military Service!"
New Installation
Steam Boiler
Response time8 hrs
Response rate88%
1 neighbors recently requested a quote
Avatar for Palmer Gas & Oil
Palmer Gas & Oil
4.6(
88
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Dover, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1932

Free estimates

Emergency services offered

"Best customer service and technicians. Stephanie, Lead Installation Coordinator, acts promptly in scheduling and keeps customers informed of updates. Ryan, Installation Technician, has been exceptionally knowledgeable in resolving both heating and air conditioning issues. Highly recommend Palmer Gas & Oil Nancy R"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+11

2 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Kevin Russo HVAC
Kevin Russo HVAC
4.9(
70
)
Central A/C - Service or Repair

Serving Dover, NH and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"Kevin was great. Our Central Air System died during a Heat Wave . When other companies told us they couldnâ t give us an appointment for two weeks, Kevin came the next morning and on a Holiday weekend. He was quick and reasonably priced. We would highly recommend Kevin Russo to anyone looking."
HVAC INSTALLS
Samsung
HVAC INSTALLS
York  condenser
HVAC INSTALLS

+2

Response time2 hrs
Response rate88%
Recommended by98%of homeowners
Avatar for Comfort Air Services
Comfort Air Services
4.3(
22
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business

Serving Dover, NH and surrounding areas

Approved

In business since 2008

Credit card accepted

Offers commercial services

"I found Comfort Air online and reached out to install central AC in my mother's condo. Patrick got back to me promptly, was very receptive in answering all of my mother's questions, and was able to start job within a couple of weeks from first call. The job took two days total, and my mother was impressed from start to finish! I highly recommend Comfort Air."
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

"Gary and Tina are such pleasant people and they know their business. They let me know exactly what they were doing; even showed me how their equipment works and took before and after pictures of my air ducts - which it seems had never been cleaned in the 40 year history of the house! They are very accommodating to people like me who are very curious. They don't mind at all if you watch them while they work. Their thoroughness is impressive. They are also one of the few companies that work on mobile homes. I highly recommend them."
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

"Owner operator Mike and his partner are outstanding. Did all my Heating and AC Vents and Main Lines also my Dryer Vent. I highly recommend them and would hire them again for any future needs. Mike is also a Veteran"
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
Angell Electric
5.0(
20
)
Window A/C Unit - Service or Relocate

Serving Dover, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Small jobs welcome

"Eric moved a junction box in my attic and installed a new ventilation fan in our bathroom. He was prompt to respond to my request, did great work, and cleaned up all areas afterwards. Price was great as well. I will hire him again."
Response time2 days
9 neighbors recently requested a quote
Recommended by27%of homeowners
Avatar for Angell Electric
Angell Electric
5.0(
29
)
Window A/C Unit - Service or Relocate

Serving Dover, NH and surrounding areas

Approved

In business since 2019

Credit card accepted

Offers commercial services

"We had an absolutely amazing experience with this father-and-son team! They own and operate their electrical company full time and also do furniture assembly, and we could not have been happier with the job they did for us. They arrived at 9:30 in the morning and stayed until around 6:30 that evening, making sure every single piece of furniture was completely assembled before they left. Everything came out beautifully, and they were incredibly hardworking, efficient, careful, and thorough. On top of that, they were both so friendly, personable, and pleasant to have around all day. Their pricing was also fantastic — by far the best of all the quotes we received. We were so impressed with their work and felt they deserved even more than what they had quoted us, so we were happy to tip them extra. We would 100% recommend them to anyone looking for reliable, skilled, hardworking people who genuinely care about doing a great job. We will be keeping their number for any future projects!"
Project Photos
1 neighbors recently requested a quote
Recommended by18%of homeowners
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Air Conditioning questions, answered by experts

If your drain line is clogged, your AC might stop cooling, shut down, or refuse to turn on at all. Otherwise, you might see your AC leaking water, find standing water or water damage near the unit, or notice a musty smell coming out of your air conditioner or vents.

One of the first signs of mold in an air conditioner is a musty smell. You're likely to notice the smell when the unit runs, from the air coming out of the vents or the unit itself. You may also be able to see mold growing on the unit, such as near the condenser coils or by the fan. In some cases, there may be visible mold by the vents.

It is possible to add air conditioning to an older home, but it can be very expensive to do so. Expect to pay anywhere from $6,000 to $17,000 or more for the ductwork and AC unit. You’ll also have to hack into the home’s walls and ceilings to add ductwork, which can impact the aesthetics of an old home.

The standard HVAC warranty is around five years. Still, many brands offer an extension to 10 years if you register the product within a specific timeframe, typically 60 to 90 days post-purchase or HVAC installation. Over the past decade, warranty periods have substantially increased, shifting from 3-5 years in the 90s to the now-prevalent 10+ year warranties. Both warranty types cover parts failing due to manufacturer defects, incurring no additional costs. Some manufacturers provide extended warranties surpassing the usual 15- to 20-year window, though these often involve extra fees. 

Air conditioners and dehumidifiers are actually quite similar, though they perform different jobs. Dehumidifiers reduce moisture in the air, while air conditioners work to cool the home. A good central AC unit will naturally perform a certain level of dehumidification due to its design, but it will not be able to handle excessive levels of moisture.

The Dover, NH homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.