Serving Mchenry, IL and surrounding areas
Approved
In business since 1946
Free estimates
Emergency services offered
"Very well. The tech did a thorough job checking both the furnace and air conditioning unit. He answered any questions we had,"
+2
Serving Mchenry, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2002
Free estimates
Warranties offered
"air duct and dryer cleaning"
+81
Serving Mchenry, IL and surrounding areas
Approved
Super Service Award Winner
Free estimates
Emergency services offered
Warranties offered
"Very impressed with their heating and air conditioning maintenance. They explained everything clearly, worked efficiently, and left no mess behind. Our home feels fresher after the air duct cleaning. Definitely a trustworthy team you can rely on."
+20
Serving Mchenry, IL and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
"For all your heating, ventilation, and air conditioning requirements, I highly recommend CR Mechanical Services. Their ability to address problems efficiently and promptly is truly impressive!"
+8
Serving Mchenry, IL and surrounding areas
Approved (Corporate)
In business since 1971
Free estimates
Emergency services offered
"We had a great experience with Four Seasons Heating & Air Conditioning during our recent replacement of our furnace and AC unit. They were very professional and completed the job on time and answered all of my questions. Would recommend them for our Heating, Air Conditioning, Plumbing and Electrical needs."
Serving Mchenry, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2014
Credit card accepted
Customers say: True professional
"The crew at One Hour Heating and Air Conditioning were professional, on time, and the day before they did the work they dropped off two huge portable heaters that heated my entire house taking me out of the bitter cold. My furnace was not working for about four days and they came to the rescue. Polite, professional, efficient, and reasonable in price. What more can you ask for. Larry P"
Serving Mchenry, IL and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"We had a great experience with Phoenix HVAC this weekend. We had been having issues with our air conditioning flow and sent a few messages to various companies in the early hours of Saturday morning requesting quotes. Phoenix HVAC responded incredibly quickly in just a matter of hours and came by to do an assessment. Tony and Bob were extremely friendly and walked us through the issues and fixes, answering all our questions in a supportive and non-condescending way. They were also not dismissive about any of the issues we had. We appreciated how they did not try to sell us anything that wasn t standard, being completely transparent and helpful throughout the process. We were so impressed, we decided to use them for our regular maintenance."
+21
Serving Mchenry, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2014
Free estimates
Emergency services offered
"This business is the company that bought the older Barrington Heating and Air Conditioning. I have relied on Barrington to service my house furnace and A/C for more than 50 years. They have come to my rescue more than once. My service technicians have become friends, not just repair people."
+1
Serving Mchenry, IL and surrounding areas
Approved
In business since 2016
Free estimates
Emergency services offered
"I went online Mon nite, they called me within 10 mins, came out the next day & fixed the air at a very reasonable price"
+79
Serving Mchenry, IL and surrounding areas
Approved
In business since 2019
Emergency services offered
Warranties offered
"We called savage heating and air conditioning. Rick was very prompt. He assessed the situation fixed it. And it required a complete Rework of our air conditioning system, but he was very quick at getting the product, got it. Fixed, within twenty four hours, we were up and running again. I would highly recommend rick and his company."
+14
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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