
Serving Meriden, CT and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"Very good got the American standard 16 seer. Inside variable speed air handler. Just what we wanted."





+172


Serving Meriden, CT and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"Very good got the American standard 16 seer. Inside variable speed air handler. Just what we wanted."





+172

Serving Meriden, CT and surrounding areas
Approved
In business since 2001
Free estimates
Emergency services offered
"So many choices when your looking for a company to service your heating and air conditioning needs. When we reached out on social media for suggestions for a reputable and reliable company so many people highly recommended Advanced Mechanical Services that we wondered if it was for real. Well now you can count us among the believers. From the moment Deena took our phone call till Rob and Ian arrived at our home and completed the work on-site, these incredibly talented and professional people did their job on time, as promised, with courtesy and knowledge and quickly identified and fixed both our heating and air conditioning issues that three other companies that we paid big money to in the past could not figure out. Their reasonable bill for quality work was another surprise. And they were COVID compliant and respectful with masks AND gloves which made us feel comfortable (as senior citizens) having them come into our home to do work."

Serving Meriden, CT and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"Joel is the ultimate professional and responded without delay! He came to do a quick overview of my Central air unit and graciously did not charge for the visit. Based on his assessment, I may not have to replace the unit but if I do, he will be the first person I call! TY Joel! Would highly recommend him."




Serving Meriden, CT and surrounding areas
Approved
In business since 1945
Free estimates
Emergency services offered
"I keep coming back because I am always very pleased with their service and honest advice. They stand behind their work and will respond. even months later, if an issue or a question arises. Tom Mull's staff are very professional, a pleasure to work with and responsive to the CDC/Covid precautions."





Serving Meriden, CT and surrounding areas
Approved (Corporate)
In business since 1946
Free estimates
Emergency services offered
"Went very well. Tech gave great information on the condition of my unit. As well as provided guidance for upcoming repairs that may be needed."





+6

Serving Meriden, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2008
Free estimates
Emergency services offered
"The boiler installation job was done great. I even accepted an annual service plan to keep up with proper maintenance. They are wonderful to work with."





+22

Serving Meriden, CT and surrounding areas
Approved
In business since 2007
Free estimates
Emergency services offered
"Very knowledgeable and professional. When speaking to RIcardo I could tell he knows his field. He is effect, efficient, knowledgeable, professional and honest. He doesn’t tell you this is your only option. He gives you options to solve your issues and lets you know this is a short term solutions or this is the long term solution. He honest with what you can do with your budget if your on a budget. We have used Protech heating & Air Conditioning for some major work in the past, and they have always added value and responded very professionally."





+4

Serving Meriden, CT and surrounding areas
Approved (Corporate)
In business since 1903
Emergency services offered
Warranties offered
"There was a snag at the beginning when they realized, after beginning to dig, that the AC unit was on top of the oil tank and they'd have to call someone in to move it before digging could continue. That delayed things a few days, but thereafter they did a good job of digging and were very careful with our trees. They also took care not to ruin the lawn with the machinery. The new tank and heater were quickly put in the basement with no problems."




Serving Meriden, CT and surrounding areas
Approved
In business since 1994
Free estimates
Credit card accepted
"I have used East Coast Mechanical for both heating and air conditioning in 3 separate residences over 25 years. This company is professional , timely communicates , offers fair pricing, cleans up and meets and exceeds my expectations and I am very particular how I want the work done."

Serving Meriden, CT and surrounding areas
Approved
In business since 1995
Free estimates
Emergency services offered
"This was my first time using Omni Mechanical and I am very pleased in their service of my oil fired boiler. I had recently purchased my home and had very little knowledge of any prior maintenance of the boiler. Other than knowing its an older unit I didnt know what to expect of the internal components when it was opened up and inspected. The techs were nice enough to let me observe as they were opening up the unit and exposed the internals. So I could see for myself what they were talking about and physically see the condition. They walked me through what they were doing every step of the way. Taking the time to explain parts they needed to change and actually showing me the condition of the older parts as they were changing them. After all work was complete. Everything was left very neat and clean. This by far has been one of my most pleasant encounters with a contractor. I will definitely strongly consider them in the future for any work I need."





+22
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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