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

Avatar for Kingdom Cooling
Kingdom Cooling
4.9(
53
)
Central A/C - Service or RepairCentral Humidifier - Install or ReplaceCentral Humidifier - Repair or Service

Serving Fremont, NH and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Jerry was very professional and did a quick clean job. I would recommend Kindom Cooling. They helped with an animal infestation that occurred in the attic also. They went above and beyond my expectations. They are terrific."
AC4
AC3
AC2
AC1
AC2

+67

Response time3 hrs
Response rate97%
5 neighbors recently requested a quote
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+12 more

Serving Fremont, NH and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Freedom Air Mechanical did an amazing job with replacing my boiler. I had 5-6 people come out to give me opinions and Craig was the only one that really took his time to help me find the best boiler for my home. He was very responsive, answer all my questions and concerns, and very importantly I knew he was honest. Out of all the potentials companies I considered, Freedom Air was the only one that gave me options and tried to help me save where I could. I would recommend Freedom Air Mechanical to my family and friends all day."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+36

Response time1 day
Recommended by92%of homeowners
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 Fremont, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1932

Free estimates

Emergency services offered

"Palmer Gas & Oil just did an entire replacement of the 20-year-old central HVAC + humidifier + thermostats two-zone system in my home with a new state-of-the-art total system and I could not be more pleased. From start to finish each employee was personable, extremely knowledgeable, very courteous, and the consummate professional. There is truth to the adage that you get what you pay for and I know I got the best. All Gold Stars!"
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 Fremont, NH and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"My Mitsubishi Mini split A/C was not cooling properly even after a tune-up by another tech company in the spring. Kevin came by the day after I called and fixed the issue quickly. Now the unit is like brand new. I would recommend and will have this business tune my units up from now on."
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 Fremont, 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 Fremont, 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 Moulton Mechanical Services
Moulton Mechanical Services
4.9(
131
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Fremont, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Free estimates

Emergency services offered

"I wish I could give more than 5 stars to Moulton Mechanical Services. In this day and age of spotty service, Jarod is like a throwback to when excellent service was valued. He is always responsive, checks in frequently and goes above and beyond what is expected from a vendor. When we had a major problem resulting in needing a new heating system, he even lent us some of his own portable heaters to get us through and checked on us frequently. He also advised us that the damage caused by our faulty heater should be covered by our insurance which we would never even have considered. He checks in frequently and answers all calls and texts promptly. I cannot think of a situation where I have had better service, ever. I highly recommend Moulton Mechanical Services for both heating and air conditioning. He also advises on the most cost effective systems and solutions. Darlene and Jim Underhill"
new heating system
SYSTEM INSTALLATION
BOILER INSTALL
BOILER INSTALL
Response time10 hrs
Response rate87%
17 neighbors recently requested a quote
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FAQs for air conditioning projects in Fremont, 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 Fremont, NH homeowners’ guide to air conditioning services

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