Serving Deerfield, IL and surrounding areas
Approved (Corporate)
In business since 1938
Free estimates
Emergency services offered
"All temp did great job! My air conditioner wasn't working All Temp came out the same day, found and fixed the leak it in about 2 hours."
+6
Serving Deerfield, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2002
Free estimates
Warranties offered
"I have used Mr Duct for air ducts and vent cleaning for several years.They consistently provide great service at a reasonable price."
+81
Serving Deerfield, IL and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
"Rick was very helpful with selecting my new central air and furnace system. I am still thrilled with the result."
+8
Serving Deerfield, IL and surrounding areas
Approved
Super Service Award Winner
Free estimates
Emergency services offered
Warranties offered
"Ever since I started using G & R Heating & Air . . . I Give a 5 Star Kudos to their Professional Service with my Heating and Air Conditioner Maintenance. The turn-around-time from scheduling an appointment to their arrival has been the top-notch factor compared to others I've used in the past. Usually, when you have an emergency, this establishment is out by you extremely fast."
+20
Serving Deerfield, 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 Deerfield, IL and surrounding areas
Approved
In business since 1911
Free estimates
Emergency services offered
"The air conditioner is working fine."
+10
Serving Deerfield, 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 Deerfield, IL and surrounding areas
Approved
In business since 1973
Free estimates
Emergency services offered
"Outstanding service!! Cahill has been our heating and air conditions company for over 25 years. Installed two systems over this time. High quality work."
+7
Serving Deerfield, IL and surrounding areas
Approved
In business since 2011
Emergency services offered
Warranties offered
"They looked at our basement shower and weren’t able to replicate the problem. They gave us advice on what could be the issue and assured us it wasn’t air in the lines"
+15
Serving Deerfield, IL and surrounding areas
Approved
In business since 1998
Free estimates
Emergency services offered
"Full Efficiency heating and cooling has maintained my home AC and heating for many years. The reason why, I trusted my technician Carlos to install a new HVAC service at my new office in Waukegan. He is amazing, always listens to my concerns, educates me, and builds my trust. An amazing team, focused on delivering trusting customer service. A debt of gratitude to Full Efficiency heating and cooling."
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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