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

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 Sandown, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Credit card accepted

Pure Temp Heating and Cooling is Veteran Owned company dedicated to providing our customers with the best quality and craftsmanship. With over 12 years of experience in the industry ranging from residential, to commercial and light industrial, we are here to build relationships with our customers and communities and to provide our employees with a great place to work. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations.

New Installation
Steam Boiler
Response time8 hrs
Response rate88%
2 neighbors recently requested a quote
Avatar for Palmer Gas & Oil
Palmer Gas & Oil
4.6(
89
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Sandown, 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

1 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Kevin Russo HVAC
Kevin Russo HVAC
4.9(
71
)
Central A/C - Service or RepairCentral Air Cleaner - Repair or ServiceCentral Humidifier - Repair or Service

Serving Sandown, 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 by97%of homeowners
Avatar for Ethical Home Pro, LLC
Ethical Home Pro, LLC
4.9(
38
)
Central A/C - InstallCentral A/C - Install - For BusinessDuctless Mini-split A/C - Install or Replace

Serving Sandown, NH and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Mike and his team were extremely professional and came up with a great solution for our home. We have baseboard and a combination of central air in the attic for the second floor and a minisplit for the 1st floor has been life changing for my wife who has bad allergies. Best investment we ever made."
Condenser
Condenser
Air grill ceiling
Air grill ceiling
Air grill ceiling

+172

Response time6 hrs
Response rate95%
Recommended by100%of homeowners
Avatar for Comfort Air Services
Comfort Air Services
4.3(
22
)
Ductless Mini-split A/C - Install or ReplaceCentral A/C - InstallCentral A/C - Install - For Business+2 more

Serving Sandown, 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%
13 neighbors recently requested a quote
Avatar for Revolution HVAC, LLC
Revolution HVAC, LLC
4.3(
22
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Sandown, NH and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"We hired this company to install a Rinnai tankless hot water heater and three Fujitsu tuckless mini split heat pumps for our air conditioning and heating needs. We also purchased their two year Preventive Maintenance plan for our furnace. Their workmanship is very professional and all work was completed in accordance to our schedule. Their pricing was very competitive and most reasonable. I especially appreciated the crews sensitivity towards keeping my floors clean while they were going back and forth from inside to outside; all the worksites within our home were left spotless as well as the floors. Thanks to Saul and the men at Revolution..a job well done. See you in the Fall for our PM Contract."
Response time2 days
1 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Skovron Mechanical Services
Skovron Mechanical Services
4.1(
85
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For BusinessCentral Humidifier - Repair or Service

Serving Sandown, NH and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

Welcome and thank you for your interest in Skovron Mechanical. Highly trained and knowledgeable in the diagnosis, repair, and installation of heating, cooling, and refrigeration equipment. You can be rest assured that you will receive quality products and dependable service whenever you need Skovron Mechanical, from recommending the right system to arranging convenient financing. \n \nHonest, Upfront Pricing - You will receive a price before any work is performed to make sure there are no surprises to you. Once you decide to do the work there are no extra charges other than what you approve. This way you know exactly what you are paying for so you don�t have to worry about any �hidden cost�. \n

Commercial Cooling
Before Oil Boiler
Old
Oil Boiler
HVAC Roof Top Unit

+19

Response time9 hrs
Response rate100%
Recommended by84%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 Sandown, NH and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

We take great pride in our experience, expertise, quality and customer service that we provide to meet your needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

Logo
Response time1 day
Response rate100%
8 neighbors recently requested a quote
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FAQs for air conditioning projects in Sandown, 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 Sandown, NH homeowners’ guide to air conditioning services

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