Serving Delafield, WI and surrounding areas
Approved
In business since 1877
Free estimates
Emergency services offered
"Great job on both furnace & air condit"
Serving Delafield, WI and surrounding areas
Approved
In business since 1987
Free estimates
Emergency services offered
"Always great work, very thorough for our summer tuneup to get the air conditioning season started"
+8
Serving Delafield, WI and surrounding areas
Approved
In business since 1985
Free estimates
Emergency services offered
"Cardinal Heating & Air Conditioning was great. They Repaired our Heater in no time."
Serving Delafield, WI and surrounding areas
Approved
In business since 2016
Free estimates
Emergency services offered
"we had a burning smell from our vents. i posted on Facebook and was reached out to by the owner and when i told him i was looking for someone to come ASAP he moved things around in his schedule to get a tech here within an hour of opening. Patrick came and identified the issue within 10 minutes. He had to go get the panel and was completely finished with his work in under an hour. He was friendly, attentive and quick to work. i highly recommend!"
Serving Delafield, 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 Delafield, 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 Delafield, 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 Delafield, WI and surrounding areas
Approved
In business since 2009
Emergency services offered
Warranties offered
"I cannot say enough about our technician, Jordan, or the service of In Phase. We put our request into Angi and probably 1 minute later In Phase called. We have been wanting to upgrade our house to Ecobee since we purchased it two years ago. We thought we could do it ourselves, but our home had 3 zones, a two-wire boiler, and a newly added Central Air system. I had tried to hire other companies to do the job in the past, but very few companies were familiar with Ecobees. When In Phase called they were confident in the Ecobee system and were able to get us in the next day. Jordan showed up on time and was very personable and knowledgeable about the system. He had everything up and running in about 2.5 hours. This easily saved my husband and I a weekend of working on this, not to mention the fact that I didn't have to hear any cursing. (LOL!) BTW...we had already purchased everything, Jordan installed it and got it all set up for us. Many thanks!"
+51
Serving Delafield, WI and surrounding areas
Approved
In business since 1993
Free estimates
Warranties offered
"We were given an estimate by Jason & he was very professional & he gave us two options for the work that needed to be done. We chose this company over the two others we received as the work would bring all of our electrical up to code. We were given a start date & estimate of how long it would take and they were spot on. The work was completed on time & it looks great. One the things we liked was that the person doing the estimate (Jason) was also the one doing the work. They handled everything - permits & contacting the city inspector. The city inspector reviewing g the work just kept saying "wow." We did purchase an extra package which included a followup inspection of our furnace & A/C units. Jason & Jayden were respectful of our time & propert & we highly recommend them!"
+3
Serving Delafield, WI and surrounding areas
Approved
Free estimates
Small jobs welcome
Credit card accepted
At LSI repair we offer only the best and fair prices. We also specialize in heat treating furnaces but we cover a large array of services from residential to commercial from small to big.
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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