
Serving Elm Grove, WI and surrounding areas
Approved
In business since 1877
Free estimates
Emergency services offered
"Great job on both furnace & air condit"


Serving Elm Grove, WI and surrounding areas
Approved
In business since 1877
Free estimates
Emergency services offered
"Great job on both furnace & air condit"

Serving Elm Grove, 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 Elm Grove, 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 Elm Grove, WI and surrounding areas
Approved
In business since 1997
Free estimates
Emergency services offered
"Swimmingly. I interviewed quite a number of HVAC companies for this job by sending out an RPF (Request for Proposal), and Bob Mamayek was unquestionably the most thorough in his on-site evaluation. Installation crew was fantastic. This is a small shop, and it was a true pleasure to have a team of regular guys just getting the job done. I recommend them without reservation. I almost gave them a B for responsiveness because Bob doesn't do a lot of email, but I realized while typing that this would be completely unfair, for two reasons. A) Bob might not respond to email with email, but he did always respond with a phone call. Frankly, that is better on many counts. B) This ignores the amazing response to my RPF, which was both timely and thorough. So, really, this says more about my email-centric life than Mamayek's responsiveness."

Serving Elm Grove, WI and surrounding areas
Approved
Super Service Award Winner
In business since 2002
Free estimates
Emergency services offered
"My technician Kyle was very informative and respectful. He explained what was going on and was very professional. Kyle even left me with an electric heater for the evening until they could replace my furnace the next day. Kyle was back early the next morning to start the replacement of my old furnace for the new one and it is working great! I am so happy that I was able to get this done right away."




Serving Elm Grove, WI and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
"Marti, was very helpful. Respond quickly and came by within a few hours. I had two other companies come by and wanted a much more than Fast air. I highly recommend these guys."

Serving Elm Grove, 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

Serving Elm Grove, WI and surrounding areas
Approved
In business since 2005
Free estimates
Warranties offered
At Southport Plumbing, Heating & Cooling, we're A+ rated by the BBB. Our technicians are NATE certified to meet national standards of excellence, and we're a Carrier® Factory Authorized Dealer, recently cited as the #1 medium-sized business to work for by the Milwaukee Journal Sentinel. We treat our team well and hold them to high professional standards. Our up front, transparent pricing, great customer service, and honesty in our business practices make us the plumbing and HVAC company that you'll feel good working with on a regular basis, with 100% satisfaction guaranteed.





+2

Serving Elm Grove, WI and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
Roman Home Services is a leading electrical, plumbing, and HVAC contractor serving Southeastern Wisconsin. We offer a comprehensive range of residential electrical, plumbing, and HVAC services, including new construction, remodeling, repairs, and routine service. With the expertise and experience to handle projects of all sizes and complexities, our team is committed to delivering reliable, high-quality results.\n\nWhen you choose Roman Home Services, you can expect professionalism, integrity, and a commitment to excellence. We are proud to serve homeowners throughout Southeastern Wisconsin and look forward to helping with all your home service needs. Contact us today to experience the Roman Home Services difference and see why Milwaukee-area homeowners choose us for electrical, plumbing, and HVAC service.





+4

Serving Elm Grove, WI and surrounding areas
Approved
In business since 2009
Emergency services offered
Warranties offered
"Had them out to complete a duct cleaning for my home and they were very throughout and very friendly to all members of my family including working with having pets in the home. fairly priced for the high level of service provided"





+51
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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