Serving Oak Park, MI and surrounding areas
Approved
In business since 2006
Emergency services offered
Small jobs welcome
"My A/C was blowing warm air. They came in and fix the problem promptly. Didn't take very long. Good price, very professional. Greatly satisfied."
Serving Oak Park, MI and surrounding areas
Approved
In business since 1998
Free estimates
Emergency services offered
"I contacted Greg after I turned on the heater for the first time and noticed a burning smell coming from the ducts. While they were booked out three days in the future, Greg found a way to work us into the schedule the same day. Within hours, they had the problem diagnosed and had located the parts needed to fix it--all at a fair and reasonable cost. Additionally, they offered advice on how best to maintain our air conditioning unit. I would highly recommend them and will be calling them again with future work."
+9
Serving Oak Park, MI and surrounding areas
Approved
In business since 1996
Emergency services offered
Warranties offered
"Very responsive to critical need to fix air conditioning during the heat wave. Courteous, friendly and professional. I highly recommend Harriman."
+3
Serving Oak Park, MI and surrounding areas
Approved
In business since 2015
Emergency services offered
Warranties offered
"Thank you for the fast service and reasonable price , I had emergency call , hot water heater was installed the same day , I will recommend family and friends"
Serving Oak Park, MI and surrounding areas
Approved
In business since 2013
Emergency services offered
Small jobs welcome
"They were able to get to us same day to fix our air conditioner during an extremely hot weather period. They informed us exactly what the problem was and made the repairs promptly. Very professional."
+1
Serving Oak Park, MI and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1979
Free estimates
Emergency services offered
"A/C service and maintenance . Dan, the technician was extremely pleasant and did a very thorough inspection and cleaning of our A/C components."
Serving Oak Park, MI and surrounding areas
Approved
In business since 2012
Free estimates
Emergency services offered
"Great company to work with. They were able to come work on my air conditioning very quickly. The job went quick and smooth. I was very satisfied with their work and would absolutely recommend them and use them myself in the future."
Serving Oak Park, MI and surrounding areas
Approved
In business since 2010
Free estimates
Credit card accepted
"Excellent rates for cleaning both air conditioning and furnace. Prompt service, with excellent response times. Staff were knowledgeable, helpful, and professional."
+1
Serving Oak Park, MI and surrounding areas
Approved
In business since 1983
Free estimates
Credit card accepted
"Very happy with to get my air back on! Serviceman Jeff was friendly, professional and educated me on how to take care of my air conditioner"
Serving Oak Park, MI and surrounding areas
Approved
In business since 2024
Free estimates
Emergency services offered
"The guy did an amazing excellent job He took and time and found what was causing the central air not to work and why the heat would not work also He fixed it completely and now everything works I really appreciate what you did for my mom cause no one else did that They just came and left and every year she had to call somebody or my brothers tried to help but they didn’t know what they were doing Do from the bottom of my heart I truly appreciate you I rate your service 1000/10000 Thank you so much"
+1
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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