Serving West Allis, WI and surrounding areas
Approved
In business since 1877
Free estimates
Emergency services offered
"Great job on both furnace & air condit"
Serving West Allis, WI and surrounding areas
Approved
In business since 1987
Free estimates
Emergency services offered
"Patrick started servicing our Furnace and Central Air conditioning systems a few years ago. He is so efficient, pleasant, and easy to work with that we specifically asked for him now twice a year for our annual Heating system check and also annually for our Air-conditioning system check. This trip he also had a trainee with him, and did a great job of allowing the trainee to do the work, but carefully supervising at the same time. Highly recommend!"
+8
Serving West Allis, WI and surrounding areas
Approved
In business since 2008
Free estimates
Emergency services offered
"Furnace in my home stopped working. Went through Home Advisor and had one company come over. They had stated that I needed a new furnace.Scott had called and came over within 1 hour, checked my furnace and found that it was plugged. He did the repairs and running great again. This is the second time he had done work for me a year ago on my air conditioning unit.He does great work, honest and his prices are fair. I will not rely on anyone else, except for Scott. He is my permanent repair man."
Serving West Allis, WI and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"The technician arrived on time, was courteous and well-spoken, and knowledgeable regarding my furnace issue. The repair was completed efficiently and final cleanup was thorough. I would recommend this company for similar services in the future."
+13
Serving West Allis, WI and surrounding areas
Approved
In business since 2000
Free estimates
Credit card accepted
"Mamayek Heating was very proficient with their installation of whole house central air-conditioning in our 1896 year-old home which never had a unit in place. From start to finish, they accommodated our needs and schedule as well as leaving behind a nicely done project in working order. Thank you to the 3 Bobs for all their help!"
Serving West Allis, WI and surrounding areas
Approved
Super Service Award Winner
In business since 2018
Free estimates
Emergency services offered
"I was extremely grateful that they had a technician scheduled for other stops in my area the day I reached out on Angi, and that they were able to fit me in that day to repair my broken central air conditioning. Everyone in our house is very glad to no longer be sweltering in the heat."
+16
Serving West Allis, WI and surrounding areas
Approved
In business since 1997
Free estimates
Emergency services offered
"Very well. After the installation, half of the radiators in the house did not work, so 2 guys came back the very next morning and were in and out in 45 minutes. It was installed in a day. Love the new system
"
Serving West Allis, WI and surrounding areas
Approved
Super Service Award Winner
In business since 2002
Free estimates
Emergency services offered
"One Hour Heating & Conditioning was prompt arriving at the scheduled appointment time. My wife and I also appreciated receiving a message that the techs were on their way. Our techs Kyle and Jacob were friendly, professional, and knowledgeable. Arguably one of the most thorough annual checkups I have had since being in the home for 7 years and using some other services in the past. While both furnaces are well beyond their expected life, neither tried to "oversell" me and offered objective pros/cons to some repair options vs. replacement. I would highly recommend One Hour Heating & Conditioning."
Serving West Allis, WI and surrounding areas
Approved
In business since 2005
Free estimates
Warranties offered
"Very pleased with our new air conditioner installation. The salesman was very nice and explained everything to my satisfaction. The installers were efficient and knowledgeable as well. They showed up exactly on time and were finished earlier than I expected. Work areas were cleaned up, inside and out. Not even any metal shavings in the grass where the new ducting was cut. One of the nice gentlemen even explained the new thermostat they installed. I highly recommend Southport Home Services."
+2
Serving West Allis, WI and surrounding areas
Approved
In business since 2024
Free estimates
Emergency services offered
"Shane was able to schedule a prompt appointment. He arrived on time and performed a thorough diagnostic on the furnace. He identified an issue I was unaware of and corrected the problem with the air conditioner using parts that were still under warranty. I will gladly use his services again."
+2
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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