Serving Whitman, MA and surrounding areas
Approved
In business since 1983
Free estimates
Warranties offered
"Installed a ductless minisplit for three rooms in my house. The work quality was superb. Would definitely recommend them to anyone looking for this kind of work."
+23
Serving Whitman, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Emergency services offered
"Dylan is very reliable and knowledgeable. He has provided plumbing services many times for us and I wouldn't use anyone but him. The service is exceptional and pricing is extremely fair. I highly recommend Venture Mechanical for any plumbing, heating, or air conditioning needs that you may have."
+27
Serving Whitman, MA and surrounding areas
Approved
In business since 2007
Emergency services offered
Warranties offered
"They called back promptly to make an appt,,they called to confirm, they came on time, & were very polite. . They also wore masks & shoe covers, & educated me on taking care of furnace / filters. Perfect"
+17
Serving Whitman, MA and surrounding areas
Approved
In business since 2012
Free estimates
Emergency services offered
"We chose Pro Heating & Cooling to do an oil to High Efficiency gas boiler conversion. Sean provided a clear and concise quote for the the full job, including a challenging removal of our oil tank. We needed the job done ASAP and Sean was able to accommodate our request and complete the full job in a day. His crews were prompt, and seamlessly coordinated to convert our combo forced hot water and air system while creating a much tidier and well laid out integration with the new boiler and indirect water heater. After the instillation Sean checked in and came to do minor adjustments to ensure the system was dialed in to run perfectly. Lastly, the pricing was great, and the instillation was designed to maximize the available Mass Save rebates for energy efficient systems. I'd recommend Pro Heating without hesitation (as I did to a friend/neighbor)!"
Serving Whitman, MA and surrounding areas
Approved
In business since 2009
Free estimates
Warranties offered
"Although 50 miles from my house A1 was there within two days which was impressive with the "hot" season in full swing. Extremely friendly and knowledgable.. Gave advice for the future of my system (mini-splits) and what I could expect."
+2
Serving Whitman, 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!
Serving Whitman, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Emergency services offered
"Excellent customer service. They installed my Central AC quickly and cleaned up after they were finished."
Serving Whitman, MA and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
"Bob did a new mini split install for me and I couldn't be happier with the work. He was professional, timely, and had excellent communication. He was also very knowledgeable and made some great recommendations for the project. I'd recommend him to anyone looking for HVAC work."
Serving Whitman, MA and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"The service was excellent!! Very professional and thorough! We highly recommend Armus for any maintenance or work you need to have done! We truly appreciate how quickly they answered our call!! Their customer service is amazing!!!"
+15
Serving Whitman, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2001
Emergency services offered
Customers say: Quick response
"The AC maintenance was comprehensive, as it was never done ferore."
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.
From average costs to expert advice, get all the answers you need to get your job done.
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