Serving Saint Paul, MN and surrounding areas
Approved
In business since 2008
Free estimates
Emergency services offered
"Very well, the air conditioning unit was fixed promptly."
+4
Serving Saint Paul, MN and surrounding areas
Approved
Super Service Award Winner
In business since 1930
Free estimates
Emergency services offered
"I have been with Standard Heating & Air Conditioning for years. The people are professional and super friendly. Cody did an excellent and thorough job. I never have to worry about my furnace or air conditioning since they are only a call away."
+1
Serving Saint Paul, MN and surrounding areas
Approved
In business since 2002
Free estimates
Emergency services offered
"I was very pleased with HVAC Doctor. Very professional. Great customer service, from first contact over the phone, the estimate and installation of our new air conditioning unit. Very knowledgeable. Employees were very respectful of my home. Quiet and courteous as they installed the air conditioner. Will definitely have them do work for me again."
+137
Serving Saint Paul, MN and surrounding areas
Approved
Super Service Award Winner
In business since 1957
Free estimates
Emergency services offered
"24 hour emergency service is excellent. Our air conditioning stopped working at night so we called at 2:00 am and a technician was out and diagnosing the problem by 11:00 am. Excellent customer service, friendly and knowledgeable technicians and very professional company overall. HIGHLY Recommended."
+5
Serving Saint Paul, MN and surrounding areas
Approved
In business since 2012
Free estimates
Emergency services offered
"Prompt response and service in an emergency for my client to have air conditioning repaired/restored."
Serving Saint Paul, MN and surrounding areas
Approved
Super Service Award Winner
In business since 1987
Free estimates
Emergency services offered
"Riley was the technician who serviced my air conditioner yesterday. Riley always kept me informed on the progress of the work he was doing and before leaving THOROUGHLY explained the condition of my air conditioner and what I can do to extend its life. Fortunately my air conditioner, even though it’s 11 years old, is in great condition and I plan on doing things to prolong its life. Overall I would give Riley a rating of 10. He is an exceptional technician, knows his job, explains things well, and personable. The cost today was $17 for a replacement filter."
Serving Saint Paul, MN and surrounding areas
Approved (Corporate)
In business since 1914
Free estimates
Emergency services offered
"They retrofit a central air conditioner in our 1920s house with radiant heat (no existing duct work) and it looks great. It is February so the AC canâ  t be run yet, but I expect it to work great. They worked quickly and left with the house just as clean as when they arrived! Thank you Hero!"
+11
Serving Saint Paul, MN and surrounding areas
Approved
Super Service Award Winner
In business since 2021
Free estimates
Emergency services offered
Plugz is your local electrical and HVAC company providing five-star service at an affordable price. Whether you're looking to upgrade your electrical panel, complete a whole-home rewire or, maybe you have an outlet that is giving you trouble, give Plugz Electric a call today. \n\nWe have financing options available to help you with larger repairs that you may not have planned for. Regardless of the situation, we're here for you, 24/7.
Serving Saint Paul, MN and surrounding areas
Approved
In business since 2022
Free estimates
Credit card accepted
"I recently had Prolific Mechanical install a new air conditioning system, and I couldn't be happier with the results. The young man who completed the installation was professional, courteous, and extremely knowledgeable. He took pride in his work, kept everything clean, and made sure the installation was done correctly from start to finish. The new system runs flawlessly and keeps the house comfortable even on the hottest days. I highly recommend Prolific Mechanical to anyone looking for quality workmanship and dependable HVAC service."
Serving Saint Paul, MN and surrounding areas
Approved
In business since 2014
Free estimates
We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We specialize in interior painting and provide unmatched customer service! You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!
+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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