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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+12 more

Serving Rochester, 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
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+36

Response time1 day
3 neighbors recently requested a quote
Recommended by92%of homeowners
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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+12 more

Serving Rochester, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1932

Free estimates

Emergency services offered

"Always happy with the service. I recently had my thermostat upgraded by Jason S. In service, and couldn’t be more happier with his expertise, and dedication!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+11

2 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for Granite State Refrigeration Services LLC
Granite State Refrigeration Services LLC
5.0(
10
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral Air Cleaner - Install or Replace

Serving Rochester, NH and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Amazing service! very knowledgeable, clean work and super respectful! if you find yourself needing any help when it comes to your heating or Air Conditioning system, call Keenan without a doubt."
Living Room Unit a 12K BTU
The 2 Zone Outdoor Unit
2 Outdoor Units
Heating & A/C Project
Heating & A/C Project

+56

Response time5 days
Response rate100%
8 neighbors recently requested a quote
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Avatar for Kevin Russo HVAC
Kevin Russo HVAC
4.9(
70
)
Central A/C - Service or RepairCentral Air Cleaner - Repair or ServiceCentral Humidifier - Repair or Service

Serving Rochester, 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
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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+2 more

Serving Rochester, NH and surrounding areas

Approved

In business since 2008

Credit card accepted

Offers commercial services

"Very competent, knowledgeable and expedient service from the beginning to end and the crew was great to work with. We highly recommended them. You won't regret it."
HVAC Jobs
HVAC Jobs
HVAC Jobs
HVAC Jobs
HVAC Jobs

+18

Response time2 days
Response rate89%
15 neighbors recently requested a quote
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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 Rochester, NH and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Service was immediate. They were here exactly when they said they would. Problem was quickly diagnosed and fixed."
Commercial Cooling
Before Oil Boiler
Old
Oil Boiler
HVAC Roof Top Unit

+19

Response time9 hrs
Response rate100%
Recommended by84%of homeowners
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Angell Electric
5.0(
20
)
Window A/C Unit - InstallWindow A/C Unit - Install - For BusinessWindow A/C Unit - Service or Relocate+1 more

Serving Rochester, 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
10 neighbors recently requested a quote
Recommended by27%of homeowners
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Avatar for Angell Electric
Angell Electric
5.0(
27
)
Window A/C Unit - InstallWindow A/C Unit - Install - For BusinessWindow A/C Unit - Service or Relocate+1 more

Serving Rochester, NH and surrounding areas

Approved

In business since 2019

Credit card accepted

Offers commercial services

"All was done right in a friendly, efficient and professional manner."
Project Photos
1 neighbors recently requested a quote
Recommended by20%of homeowners
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Avatar for Barrington Solutions Plumbing & Heating LLC
Barrington Solutions Plumbing & Heating LLC
5.0(
9
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Rochester, 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

3 neighbors recently requested a quote
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Avatar for All Good Services llc
All Good Services llc
5.0(
4
)
Central A/C - Service or RepairCentral Air Cleaner - Repair or ServiceWindow A/C Unit - Service or Relocate+7 more

Serving Rochester, NH and surrounding areas

Approved

In business since 2025

Free estimates

Small jobs welcome

"George at All Good Services Answered all my calls and text showed up at exactly when he said he would on New Years Eve and didn't rush through the job. He diagnosed the problem and fixed it. I'm totally grateful that he helped me during a tough situation. I would recommend his services to anyone looking to get their heating and cooling needs. A+ for customer service, knowledge and personality."
Forced air furnace
Forced air furnace
Forced air furnace
Forced air furnace
Forced air furnace

+8

20 neighbors recently requested a quote
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FAQs for air conditioning projects in Rochester, 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 Rochester, NH homeowners’ guide to air conditioning services

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

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