Serving Washington, DC and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1982
Free estimates
Emergency services offered
"Presidential is outstanding. They are responsive, knowledgeable and friendly. They installed my new system and have been maintaining it ever since. I highly recommend them for all of your heating and air conditioning needs."
+6
Serving Washington, DC and surrounding areas
Approved
Super Service Award Winner
In business since 2003
Free estimates
Emergency services offered
"They came right away, diagnosed the problem, and fixed our air conditioning in a very timely way!"
+45
Serving Washington, DC and surrounding areas
Approved
In business since 2001
Free estimates
Warranties offered
"I was very impressed by Polar Bear Heating & Air Conditioning. They were professional, courteous, sensitive to time and financial constraints, and really wonderful to work with. Joe took a lot of time discussing options with me and ultimately even came to my house to see the system and discuss next steps in person. Angel's knowledge of HVAC systems and repair was outstanding. I really appreciated all of the time and effort they put into fixing our problem. I would HIGHLY recommend them and will absolutely use them again if we have any additional HVAC issues.
"
Serving Washington, DC and surrounding areas
Approved
In business since 1936
Free estimates
Emergency services offered
"Checked Angie's List and saw a very good review for McCrea Heating and Air Conditioning, plus a special promotional coupon so gave them a try. Service tech (Mike) made a multi-point inspection. He found and corrected some minor issues and added coolant. Fortunately nothing major was required. He was on time and courteous, and readily answered the questions I peppered him with. A very positive experience."
Serving Washington, DC and surrounding areas
Approved
In business since 1967
Free estimates
Emergency services offered
"Roberto F did a great job installing my air conditioner, I recommend highly. Also Michael J was excellent in showing and explaining what needed to be done about my air conditioner, I recommend him Highly too!!!
"
+13
Serving Washington, DC and surrounding areas
Approved (Corporate)
In business since 1903
Emergency services offered
Warranties offered
"we had a leak problem and the tech came and looked over our equipment, fixed the problem and left. It cost us nothing and we have had their home heating service contracts for over 20 years. They have NEVER ONCE not shown up or not helped and in the two furnace emergencies we had--they were here with in 1hr.
We are very happy.
"
Serving Washington, DC and surrounding areas
Approved
In business since 2005
Free estimates
Emergency services offered
FULL HVAC REPAIR AND REPLACEMENT- ALL HVAC MAKES AND MODELS OF EQUIPMENT. Professional HVAC technicians in the DC-MD-V area. Knowledge, Tools and Skills at your service. HVAC Superior knows how much you and your family depends on your A/C and Heat service system, so we make sure it continuously provide an excellent performance.
Serving Washington, DC and surrounding areas
Approved
In business since 2012
Free estimates
Emergency services offered
"Our air conditioner stopped cooling on a Friday before a heat wave and by Saturday afternoon it was fixed, and not as an expensive emergency service call. Isak did a professional job accurately diagnosing the problem and fixing it in short order. Very happy with the service."
+73
Serving Washington, DC and surrounding areas
Approved
In business since 2001
Credit card accepted
Customers say: Quick response
"Mr. Haygood came out promptly on a weekend. He identified the problem immediately and had my AC up and running in no time. His advise and suggestions were spot-on. I will definitely use Mr. Haygood for my future A/C needs!!"
Serving Washington, DC and surrounding areas
Approved
In business since 2009
Emergency services offered
Credit card accepted
"They did an effective and efficient job in terms of solving my air conditioning problems. They replaced a broken capacitor and a small amount of coolant in order to solve my problems."
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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