Top-rated air conditioning pros.

Get matched with top air conditioning pros in Harvard, MA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Air conditioning pros in Harvard

Avatar for Druziako HVAC Inc
Druziako HVAC Inc
4.7(
157
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+6 more

Serving Harvard, MA and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"I’ve been a satisfied customer of Druziakos HVAC for 17 years, so when I found out I needed my gas furnace and central air replaced I didn’t look to anyone else. Everyone in the office was very helpful with the Mass Save program and process. They also submitted my rebate applications and helped with the warranty info. The work was done when scheduled and very quickly. The technicians were polite and answered all my questions."
Aprilaire Dehumidifier
Attic Air Handler
Duct Cleaning before and After
Attic Ductwork
Aprilaire Humidifier

+3

Response time11 hrs
16 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Airco Home Comfort Services LLC
Airco Home Comfort Services LLC
4.7(
33
)
Ductless Mini-split A/C - Install or ReplaceWindow A/C Unit - Service or RelocateCentral A/C - Install - For Business+11 more

Serving Harvard, MA and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"Airco is a great family-owned and operated business, very fair and knowledgeable. They replaced our forced air central heating system (oil) in a day, and were quick to respond and get to work despite how busy things were during the January cold-spell. I would highly recommend for your heating and cooling needs!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+4

Response time2 days
2 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(
5,400
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+12 more

Serving Harvard, 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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

Response time2 days
Response rate100%
37 neighbors recently requested a quote
Avatar for Emerald HVAC LLC
Emerald HVAC LLC
5.0(
15
)
Central A/C - Service or Repair

Serving Harvard, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Small jobs welcome

"My central AC unit has been broken for several years. intermittently working during hot summers. I've had several HVAC companies come to diagnose and all of them told me different things: replace the whole system, new lines, etc. potentially costing tens of thousands of dollars. So I decided to troubleshoot by myself and pinpointed the issue: the filter dryer needed to be replaced. No company wanted to do this small job. I called Emerald HVAC and told them about my issue, they sent in José, who diagnosed the issue to be what I said. He replaced the filter dryer and the AC unit works perfectly now after several years! In short, Emerald HVAC will be my first choice for any HVAC work in the future. They are honest, professional, and reasonably priced. I recommend them without reservation!"
Response time1 day
Response rate93%
30 neighbors recently requested a quote
Avatar for Rodenhiser Home Services
Rodenhiser Home Services
4.4(
522
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Harvard, MA and surrounding areas

Approved

In business since 1928

Emergency services offered

Warranties offered

"They answered their phone right away and got us an appointment with a salesman very quickly. Ryan came on time for the initial consultation. He had a clear Powerpoint on the available systems and their cost. He was able to provide an estimate on the spot. We were scheduled for the following week, but asked for any cancellations as we were having a nasty heat wave. They were able to come a few days early and Jim M, Mark M, and Brian H got the air conditioning up and running the first day before they left. They were clean, courteous and professional. They explained the new system, and cleaned up thoroughly. Great Job! Thank you!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
39 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Milltown Plumbing, Heating, Cooling and Electrical - HVAC
Milltown Plumbing, Heating, Cooling and Electrical - HVAC
4.3(
424
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Install or Replace+4 more

Serving Harvard, MA and surrounding areas

Approved

In business since 1979

Warranties offered

Small jobs welcome

"It was great doing business with them. They were on time and easy to deal with. Performed a TuneUp on the heating system. The technician, Kevin Lausier, was thorough and informative. He even got our humidifyer back in working order. I plan on requesting Kevin at Milltown to come back out and tuneup our AC system when the time comes. I'd definitely hire this company again."
The Milltown Team
Family Owned and Operated
We're Ready When You Need Us
Our Mission
Team Photos

+13

Response time9 hrs
Recommended by89%of homeowners
Avatar for O'Hara Heating And Cooling
O'Hara Heating And Cooling
4.9(
9
)
Central A/C - InstallCentral A/C - Service or RepairCentral Humidifier - Install or Replace+2 more

Serving Harvard, MA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

OHara Heating And Cooling is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Response time1 day
Recommended by100%of homeowners
...
Showing 1-10 of 330

FAQs for air conditioning projects in Harvard, 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 Harvard, MA homeowners’ guide to air conditioning services

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