
Serving Mill River, MA and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
"Excellent service. They came the same day that I called. Quick and painless!"





+25


Serving Mill River, MA and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
"Excellent service. They came the same day that I called. Quick and painless!"





+25

Serving Mill River, MA and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
At DYETT HVAC PRO CORP. we offer professional heating, ventilation, air conditioning and refrigeration services. We install, repair and perform maintenance on all types of equipment—from walk-in coolers, freezers, display cases and refrigerators to central units, mini-splits, rooftop units and all types of air conditioning systems, as well as any type of heating system, from oil boilers to the most modern high-efficiency models.\n\n

Serving Mill River, MA and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
Here at ACB, we do everything from demolition to whole house renovations.

Serving Mill River, MA and surrounding areas
In business since 2004
Free estimates
Emergency services offered
"Great job. I previously had several cats, and they sanitized and cleaned everything. They were patient with my old house -- and it was very hot, since my air conditioning had died!! Thank you."





+43
Serving Mill River, MA and surrounding areas
In business since 2020
Free estimates
Warranties offered
"An honest assessment of my unit. Very thorough in understanding the unit and possible issue. Works fast. Should give a solid fee for service call, not $40-50. But was happy to give him the $50. Also, was given no paperwork to detail what he found or did with measurements of heat and cold air?"

Serving Mill River, MA and surrounding areas
In business since 1983
Free estimates
Emergency services offered
"Our experience with All Phases Mechanical has been excellent. On the first occasion we used APM, we lost heat during a cold snap in the middle of winter. We called in the morning and a technician arrived that afternoon and quickly determined that not only was our 20 year old furnace in need of expensive repairs (which a friend of ours in the construction industry validated), but continuing to run it would potentially result in a carbon monoxide hazard to my family. Carl gave us clear options and helped us understand benefits (rebates, no interest loans, etc.) that are available from the state to assist families in our predicament. We decided to move forward with a new furnace and Carl's team installed it the next day. On the second occasion, APM helped us our central air conditioning system. Again, Carl sent a technician who arrived promptly the same day, who determined that the air conditioning system was fine but it wasn't working properly due to faulty wiring. He quickly fixed it and was on his way - all at no charge. I can't say enough about All Phases Mechanical. If you're looking for a local company that cares about its customers (and understands that heating and cooking problems need to be addressed quickly), All Phase Mechanical is the company you should use."





+6

Serving Mill River, MA and surrounding areas
In business since 2006
Free estimates
Credit card accepted
"They did a good job cleaning the air du t"





+14

Serving Mill River, MA and surrounding areas
In business since 2025
Free estimates
Emergency services offered
I specialize in installing and troubleshooting mini split heating and cooling systems. I also have experience working with commercial refrigeration, ice makers, soda machines. I can remove and dispose of residential a/c units. I can be reached directly by calling or texting me at 646-812-1257





+2

Serving Mill River, MA and surrounding areas
In business since 2000
Free estimates
Credit card accepted
"It ended up in a $500 deal. They ended up finding mold in the air return so they ended up doing mold remediation and then they found more and I told them to just go ahead and do what needs to be done. They seemed like they tried to up sell me a little bit. "

Serving Mill River, MA and surrounding areas
In business since 2012
Free estimates
Small jobs welcome
"Steve installed a mini split system. he was very meticulous about the work and called back many times to see how everything was working. he did a great job and the units work awesome. saving some bucks not buying so much oil now."





+149
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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