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Find Air conditioning pros in Lancaster

Avatar for Airco Home Comfort Services LLC
Airco Home Comfort Services LLC
4.7(
33
)

Serving Lancaster, MA and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"I whole heartedly recommend Airco. Their team was experienced, skillful, friendly and professional throughout the duration of this job, from Joe's first visit to my home to discuss air conditioning options to Derek and Cam's final touches on the duct system. I had complete confidence in them, as well as in Steve, Danny, Frank and Patrick. Additionally, Airco's connections to MassSave and Commerce Bank meant financing and payment options to suit my budget. No more hauling loud and heavy window a.c. units up from the basement. Instead, I am enjoying consistent cooling throughout my home with no noise whatsoever. I am a very happy customer!"
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+4

5 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Sila Heating, Cooling, Plumbing and Electrical
Sila Heating, Cooling, Plumbing and Electrical
4.5(
5,398
)

Serving Lancaster, MA and surrounding areas

Approved (Corporate)

In business since 1989

Free estimates

Emergency services offered

"We are overall very happy with the project. Sila had to install a high velocity air conditioning system in very limited space. They provided a timely quote and showed up and did the work professionally and on time. There were a few hiccups, such as the installation of the hatch to the attic space, but Sila’s carpenter agreed to fix the problem at no additional cost to us, so I consider that to be excellent service. After two weeks, the system has been performing exactly as we hoped."
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+6

63 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for ENDLESS ENERGY NEW ENGLAND, INC.
ENDLESS ENERGY NEW ENGLAND, INC.
4.7(
20
)

Serving Lancaster, MA and surrounding areas

Approved

In business since 1980

Free estimates

Emergency services offered

Endless Energy is a trusted local HVAC and Plumbing Company servicing the majority of the state of Massachusetts with office in Marlborough, Needham, and Randolph. Specializing in Heat Pumps, Central AC, Furnaces, and Boilers, we have Master Plumbers, Electricians, and HVAC Technicians all under one roof reducing your need to find multiple contractors! We are also a Mass Save partner and can conduct your no cost Mass Save Home Energy Assessment and install any recommended insulation.\n\nWe can help you with: \n*Heating Repairs, Installation, & Service\n*AC Repairs, Installation, & Service\n*Plumbing Repairs, Installation & Service\n*Water Heater Replacement & Service\n*Indoor Air Quality Solutions\n*Ductwork & Line Set Solutions\n*Electrical Panel Upgrades and Replacement\n*Insulation \n*No Cost Home Energy Assessments\n\nA Mass Save certified contractor with an A+BBB rating. All of our skilled technicians undergo an extensive background and drug screening prior to being hired to our team!

Holliston Heat Pump
Boston Heat Pump
Natick Ducted System
98 neighbors recently requested a quote
Recommended by70%of homeowners
Avatar for Rodenhiser Home Services
Rodenhiser Home Services
4.4(
522
)

Serving Lancaster, MA and surrounding areas

Approved

In business since 1928

Emergency services offered

Warranties offered

"Due to the pandemic it took a while for the park to come in, but after the park came in they were able to fix it the same day. They were terrific and very helpful. They provided portable AC units during the time when our AC was down. This was very good of the company to do."
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46 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Wotton Heating
Wotton Heating
4.7(
29
)

Serving Lancaster, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's 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 in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.\n\n

oil burner cleaning
Roth oil tank
Burnham Boiler /tankless
Biasi Boiler
Mitsubishi

+1

Response time1 day
17 neighbors recently requested a quote
Recommended by78%of homeowners
Avatar for Milltown Plumbing, Heating, AC, Drain Cleaning & Electrical
Milltown Plumbing, Heating, AC, Drain Cleaning & Electrical
4.4(
200
)

Serving Lancaster, MA and surrounding areas

Approved

In business since 1979

Credit card accepted

Customers say: Super punctual

"I called for service on my central air conditioning.  He set up the appointment for the following morning.  He showed on time and explained what the problem was.  He fixed my air conditioning unit and had it running again.  I was very happy with the service and the provider was professional and my family was impressed with him.
"
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12 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for O'Hara Heating And Cooling
O'Hara Heating And Cooling
4.9(
9
)

Serving Lancaster, MA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Mike at O'Hara Heating and Cooling is outstanding! He was quick to come out and look at what I was looking to have done. He was professional, courteous, and honest about his recommendation. I have repeatedly hired Mike on many projects including: replacing both the indoor and outdoor AC Condensers after they failed, relocated the condenser line (due to remodel), replaced the thermostat, and replaced the baseboard heating system in my home. All work was completed on time and within budget."
Response time1 day
Recommended by100%of homeowners
Avatar for Advanced Energy Concepts of Worcester, Inc.
Advanced Energy Concepts of Worcester, Inc.
3.9(
138
)

Serving Lancaster, MA and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"Excellent and prompt service. I had a small leak in the freon tube of my central air unit which basically rendered it useless. The repairman arrived on time., and quickly went to work. He explained to me in plain english what the various problems could be and after spending a few hours diagnosing the problem, he found the leak somewhere in the unit itself. He quickly fixed it. He was definately an expert and quite knowledgeable in HVAC. A real pro. The price was very reasonable. I would use these guys again and would recommend them to others."
33 neighbors recently requested a quote
Recommended by48%of homeowners
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FAQs for air conditioning projects in Lancaster, MA

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 Lancaster, MA homeowners’ guide to air conditioning services

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