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Find Air conditioning pros in Portsmouth

Avatar for Comfort Air Services
Comfort Air Services
4.3(
22
)

Serving Portsmouth, 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
15 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for Pure Temp Heating and Cooling, LLC
Pure Temp Heating and Cooling, LLC
5.0(
17
)

Serving Portsmouth, 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%
12 neighbors recently requested a quote
Avatar for Kevin Russo HVAC
Kevin Russo HVAC
4.9(
70
)

Serving Portsmouth, 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 Palmer Gas & Oil
Palmer Gas & Oil
4.6(
87
)

Serving Portsmouth, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1932

Free estimates

Emergency services offered

"Palmer Gas & Oil has come to the rescue for us numerous times in the past two weeks! Timely responses, Incredible staff. Their Electrician Jason C. is a World Class Professional. Their Plumbing team also has been very responsive and all our experiences with Palmer have been truly awesome!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+11

1 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Paul The Plumber, LLC
Paul The Plumber, LLC
3.6(
19
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"The Paul the plumber team was really great. I needed a whole AC replacement, air handler and compressor/ heat exchanger. From quote to install was under a week! This all happened during those crazy hot 95+ degree days so it was urgent. The only issue I had was the air handler was installed backwards. The team had to come out a 3 rd day to make it right. But they did and no harm no foul. The price was right and the quality and craftsmanship looks really good. I definitely recommend Paul the Plumber."
New Boiler
Old Boiler
Rinnai Tankless Water Heater
Gas Furnace
A/C Condenser Install

+11

Response time2 days
3 neighbors recently requested a quote
Recommended by73%of homeowners
Avatar for North Shore Home Energy, LLC
North Shore Home Energy, LLC
4.4(
17
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"Excellent, knowledgeable service from a polite, friendly Pro. He explained my options and got the work done quickly and efficiently. Highly recommend."
Lochinvar FTXL install
New Lochinvar Boiler
Gas boiler Change
Existing oil furnace
New Carrier LP Gas furnace

+14

Response time2 days
9 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Heritage Home Service
Heritage Home Service
4.2(
1,355
)

Serving Portsmouth, NH and surrounding areas

Approved (Corporate)

In business since 1988

Emergency services offered

Warranties offered

"They replaced my furnace and put in central air. They took the time to ask where I wanted things put. They showed up on time and when they left everting was clean exelant job"
Golf Tournament
Water quality team
HVAC tech
Electrical team
Bryan, electrician

+24

144 neighbors recently requested a quote
Recommended by91%of homeowners
Angell Electric
5.0(
19
)

Serving Portsmouth, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Small jobs welcome

"Eric did a fantastic job installing our new bathroom fan. He was courteous, honest, and clearly knows his trade. The fan is quiet and works beautifully. It’s such a relief to find someone reliable and skilled. We will definitely use Angell Electrical again! Highly recommend."
Response time3 days
19 neighbors recently requested a quote
Recommended by29%of homeowners
Avatar for Olson Heating & Cooling
Olson Heating & Cooling
5.0(
4
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2000

Customers say: Quick response

Our mission at Olson Heating & Cooling is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! Company Name stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today!\n

Installation
Installation
Response time4 hrs
Recommended by100%of homeowners
Sunrise Heating and Cooling
5.0(
5
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of Heating and Cooling services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

34 neighbors recently requested a quote
Recommended by40%of homeowners
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FAQs for air conditioning projects in Portsmouth, 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 Portsmouth, NH homeowners’ guide to air conditioning services

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