
Serving Day, FL and surrounding areas
Approved
In business since 2018
Warranties offered
Credit card accepted
"Friendly, reasonable pricing and no hassles."





+8


Serving Day, FL and surrounding areas
Approved
In business since 2018
Warranties offered
Credit card accepted
"Friendly, reasonable pricing and no hassles."





+8

Serving Day, FL and surrounding areas
Approved
Super Service Award Winner
Emergency services offered
Warranties offered
Credit card accepted
"They did a great job! It was a pleasure working with them. They were prompt, professional and courteous. I enjoyed getting to know them. Highly recommended!"
Serving Day, FL and surrounding areas
Approved
Free estimates
Small jobs welcome
We cut grass\n

Serving Day, FL and surrounding areas
In business since 2005
Warranties offered
Small jobs welcome
"My a/c would work for a little while before it would begin making noises and blowing hot air. I assumed the worst. The technician did a nice job of troubleshooting my a/c and explained every step of his troubleshooting. He gave good examples of how various internal components should be performing and at what level. He identified that the compressor was pulling too many amps while it also had an elevated pressure level. He identified that the compressor was getting too hot too fast. He then proceeded to clean out the a/c coils. The coils were very dirty and you could see dirt and particles being washed away as he directed water into the coils to remove the debris. He removed the top of the a/c and cleaned out the internal area as well. As he was doing this, he had me watch the amp level and the pressure level. Sure enough, as he was cleaning out the coils, the amp level fell and the compressor pressure level fell to acceptable levels.
He could have easily told me my a/c was shot and that I needed a new a/c, and I wouldn't have known the difference -- but he didn't. It was a pleasure having him repair my a/c and it now functions fine.
"





+3
Serving Day, FL and surrounding areas
In business since 2004
Emergency services offered
Credit card accepted
"They fit me in their schedule the next day, and fixed the problem right away.
I've used them a handful of times now, and always been satisfied. They have helped keep a couple of old A/C systems running beyond their time, and installed a complete new system for me. I've tried a couple other companies, and felt fortunate if they even answered their phone. Core Mechanical of Summerland Key has always been responsive and always fixed my A/C problems right the first time.
"


Serving Day, FL and surrounding areas
In business since 2010
Emergency services offered
Credit card accepted
"Computer did the "gotta send info to Microsoft" but when tried to reboot it ran through automatic repair without success. I did all the alternative without any success. He came and picked up the hard drive on Tuesday and returned it on Saturday. Fortunately he was able to "restore" without any data loss. Very happy with outcome."



Serving Day, FL and surrounding areas
In business since 2008
Free estimates
Emergency services offered
"This is not a duct cleaning! They merely spray a chemical into the air intake to "sanitize" the ducts. The upgrade to duct cleaning is $65 per duct. I have 15 ducts!!! Very informative transaction. No complaints
"


Serving Day, FL and surrounding areas
In business since 1980
Free estimates
Emergency services offered
"Great. It was the second time Paramount had done this for me."





+17

Serving Day, FL and surrounding areas
In business since 2020
Free estimates
Offers commercial services
"It took a while to discover and address all the AC issues, but it was same day service and handled in a satisfactory way. We would call them again."


Serving Day, FL and surrounding areas
Emergency services offered
Credit card accepted
"He was very professional, the work was done in a timely manner and at a reasonable cost. he was very knowledgeable and he helped me make the right decision for my needs.
"
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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