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Top-Rated Air conditioning pros in Dunbarton - Updated Nov 2026

Avatar for Clear All Cooling and Heating, LLC
Clear All Cooling and Heating, LLC
5.0(
93
)
Central Air Cleaner - Install or ReplaceCentral Humidifier - Install or ReplaceDuctless Mini-split A/C - Install or Replace

Serving Dunbarton, NH and surrounding areas

Approved

In business since 2016

Credit card accepted

Customers say: Quick response

"Not exactly sure if this is a Panasonic or Clear Air problem but why should it cost $900 to install a new bathroom light/fan?! It is still not doing exactly what Panasonic claims it should. Very expensive lesson learned. REVISION: It appears the problem is with Panasonic. The description is misleading. Be sure to discuss what you expect from the unit you want to be installed with the electrician BEFORE installing. What the manufacturer says it will do may vary with the circumstances of your particular location. FOLLOW UP, finally reached Panasonic Tech support and it appears Clear Air was correct in their assessment of what the fan/light can do rather than what Panasonic lead me to believe. I made sure the Panasonic tech understood my disappointment. In fact, the Clear Air electrician did a superb job of managing to get the system to perform better than Panasonic seems to have intended. Kudos to Clear Air."
Response time1 day
Recommended by100%of homeowners
Avatar for Action Plumbing Heating And Air
Action Plumbing Heating And Air
4.9(
92
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Dunbarton, NH and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Never having had to hire someone to fix my AC unit only to install it (and the company was not reputable), I had serious trust issues. Action was the only one to contact me of all the suggested companies. That made me even more suspicious! They were able to fit me in for the next day. Hmm, more hesitation. But I rested in Action's good reviews on HomeAdvisor and kept the appointment. I was so happy I did. Mike was fantastic. He was personable and extremely informative. He knows his AC and heat pumps really well. I look forward to having them back in a couple of weeks to clean my furnace and do some cleaning and troubleshooting on a Hearthstone gas fireplace. When one finds a company one can trust, well, stick with them and get what needs to be done, done. I am so happy to have done something so out of my nature, like trusting HomeAdvisor. Thank you, Action Plumbing, Heating, and Airconditioning!"
Response time1 day
Response rate89%
19 neighbors recently requested a quote
Avatar for McGinley & Sons
McGinley & Sons
3.8(
24
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Service or Repair+4 more

Serving Dunbarton, NH and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"I am writing to express my deep disappointment with the service provided by McGinley & Sons. Despite multiple attempts to resolve this issue, I have yet to receive the promised refund for work that was never completed. As a cancer survivor undergoing surveillance scans, the refund would greatly assist in covering my medical expenses. The lack of response and follow-through has added unnecessary stress during an already difficult time. In addition to this, I had to hire a lawyer to recover my down payment, which cost me additional money. Moreover, he did not offer to compensate me for the extra expenses, including hiring an electrician to install a wire for the heat pump he could not install. Despite repeated attempts to have the deposit returned, I finally received it after engaging legal assistance. I hope this review will encourage McGinley & Sons to address this matter promptly and fairly."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+5

28 neighbors recently requested a quote
Recommended by56%of homeowners
Avatar for Kyle's Cooling And Heating LLC
Kyle's Cooling And Heating LLC
5.0(
7
)
Central A/C - Service or Repair

Serving Dunbarton, NH and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"I recently moved into my house and called Kyle's Cooling & Heating to perform maintenance on our HVAC system. Kyle was extremely thorough and educated us on any questions we had. He was extremely professional and will absolutely be calling them for future services."
Logo
Response time1 day
Response rate100%
8 neighbors recently requested a quote
Avatar for Hometown Heating & Air
Hometown Heating & Air
4.9(
7
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Dunbarton, NH and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Noah was very quick to respond to our inquiry. My husband and I were helping my MIL find quotes to replace her Central Air unit. Noah was very flexible with our schedule and made sure to answer all of our questions. Hometown Heating & Air had the best quote by far but still offered a great product and amazing service. The day of install they showed up early, got working and didn’t need us for anything. I highly recommend reaching out and hiring them!"
New Boiler
New Boiler
New Boiler
Combustion Test
Old Leaking Boiler

+1

Response time2 days
13 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Barrington Solutions Plumbing & Heating LLC
Barrington Solutions Plumbing & Heating LLC
4.9(
17
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Dunbarton, NH and surrounding areas

Approved

In business since 2024

Free estimates

Small jobs welcome

"I finally got to build my dream garage to store all my tools and have a cool hangout on Friday nights with the boys n a couple coors. Chris came and did everything from the bathroom and the heating system. I will definitely be calling him back to add a mini split in the future. He was professional, punctual and clean. Very knowledgeable you can tell he cares about his clients."
Granite Ridge
Brook hill development
Sanborton
Derry
2.5 bathroom modular

+39

36 neighbors recently requested a quote
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FAQs for air conditioning projects in Dunbarton, NH

Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.

Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.

Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.

Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.

Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.

The Dunbarton, NH homeowners’ guide to air conditioning services

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