
Serving Chilmark, MA and surrounding areas
Approved
In business since 2006
Free estimates
Credit card accepted
"Very efficient and friendly. We would definitely have them do any other needed projects for us."


Serving Chilmark, MA and surrounding areas
Approved
In business since 2006
Free estimates
Credit card accepted
"Very efficient and friendly. We would definitely have them do any other needed projects for us."

Serving Chilmark, MA and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
"Unlike many other contractors in this area, they are very dependable and reliable. They arrive when they say they will. That counts for a lot."





+13
Serving Chilmark, MA and surrounding areas
Approved
Free estimates
Small jobs welcome
Hello. With 16 years in the HVAC business, I recently decided to start my own company! Well experienced in all things pertaining to mechanical system’s of all kinds. From service, to replacements, to new installs we’ve got you covered! Licensed and insured.
Serving Chilmark, MA and surrounding areas
Approved
In business since 2007
Free estimates
Miranda HVAC-R is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 17 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!
Serving Chilmark, MA and surrounding areas
Approved
In business since 2022
Free estimates
Credit card accepted
We are 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.
Serving Chilmark, MA and surrounding areas
In business since 2001
Free estimates
Emergency services offered
"I had bought a new heating system after mine died, and thought I was going to remove the old one and install the new one myself. Once I started the job, I realized I was in over my head, and thought that if I tried to hire someone to finish the job, that they would "rake me over the coals" so to speak. Two places tried just that, but NOT Dave LeBlanc. He was very thorough, friendly and not criticle of me for trying to do the job myself. He simply offered the best price to finish the job. He had to take more time than he estimated, but stuck firm to his price. A+ You should use him!"

Serving Chilmark, MA and surrounding areas
In business since 2000
Free estimates
Credit card accepted
"Excellent job, professional, considerate of my time. I already notice less dust bunnies due to my cleaner air.
"

Serving Chilmark, MA and surrounding areas
In business since 2025
Free estimates
Small jobs welcome
"Highly recommend Arctic Elements Martin Beatty for heating and cooling! Marty worked on my mom?s furnace and did an outstanding job. He?s incredibly friendly, professional, and easy to work with. His pricing is very competitive, and his turnaround time was impressive. If you?re looking for reliable, high-quality heating and cooling services, Marty is your guy!"
Serving Chilmark, MA and surrounding areas
In business since 2021
Free estimates
Credit card accepted
"This was ductless mini split air conditioning. They were there when they said they would be. Cleaned everything up as they went. Kept me informed as to what they were doing and demonstrated how to use the installed units. Very professional."

Serving Chilmark, MA and surrounding areas
In business since 2004
Free estimates
Emergency services offered
"Mr Welles called me back after second call, a few days after initial call. he came out on day we agreed on 2 days later. I left a detailed note as he was only there when no one was home. He replaced the breakers w / old but functioning breakers (they don't make them anymore). He took care of the immediate problem and did take a brief look at 2 bathroom light fixtures and discussed the problem of our pool light shorting out every time we turned it on. He suggested that we have the pool company recheck the light fixture which would require pool being emptied a good bit. When we asked if he could help us find outside electrical circuit servicing pool light, he briefly looked around and told us it would be more useful if we cleared alot of the overgrowth of bushes to save money it would take for him to labor through (as in clear the clutter before the cleaners come in so they can do their job). As it turned out, we drastically cut back the shrubs and the outside electrical lights only to find the electrical circuit in the small building our heater and pool pump was in. It was blocked from obvious view until we had the defunct heater removed and there the circuit was on the back wall. There was not the in lawn setup we had been told to look for by people before Mr Welles was involved.. We did not pursue the matter of the bathroom fixtures. The main point is that he did take care of the main problem adequately, w/i 4 days of initial phone inquiry. His first hour of service fee seemed high at $150, subsequent hours I believe are $100 /hour. I would recommend him and would use his services in the future."





+6
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.
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