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
"Can't recommend enough. He is great to deal with I will be calling and using for all HVAC and water heater issues"
+45
Serving Washington, DC and surrounding areas
Approved
In business since 2001
Free estimates
Warranties offered
"They installed a new boiler and central air conditioning in my DC rowhome and did a fantastic job. Joe answered all of my questions and they stayed on schedule with the project which was great because it was a larger project. I would highly recommend their services for the quality of workmanship and their prices were very reasonable as well. I will contact them again for future HVAC work in the DC area."
Serving Washington, DC and surrounding areas
Approved
In business since 1936
Free estimates
Emergency services offered
"We had them Replaced furnace and air conditioning unit. It was installed about a year ago but they came out for a regular service about a month ago. the service was free, part of the contract. I have no complaints, it was all good. They were responsive. they were punctual. I have no problems, it was a good deal when I bought it, it's a good deal now. I don't have any issues with how the service went. i bought it through them and I have no regrets and everything was the same as I felt when I bought it. It was a good deal, I made the right choice. Anytime you buy a major system and it doesn't go right you have a problem. I'm a happy camper.1 worker took less than an hour to complete."
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
"IRE YUSUFF from JDL HVAC SERVICES LLC. was Extremely Professional. Serviced our furnace for the winter, checked everything from every wire to every part to air input/output etc... IRE answered every question and explained a part that needed replaced. He showed the old part and it's voltage that was deficient then the new part and the proper voltage for our unit. He was Extremely Professional and Knowledgeable. We even decided to have him/his company to return again in the Spring to service our air conditioning. We found them through HOME ADVISOR and within 10 minutes of me requesting a quote for maintenance/service JDL HVAC SERVICES, LLC was calling me on the phone. They set up service for the very next day which was a SUNDAY. I would totally recommend them to anyone in need of through/excellent service. THANK YOU!"
+73
Serving Washington, DC and surrounding areas
Approved
In business since 2001
Credit card accepted
Customers say: Quick response
"Damian came out to replace our humidifier on our heat pump as well as install a new thermostat system - he is very knowledgeable about hvac systems and he is very conscientious in coming to re-check the humidifier when it wasn't initially working as well as replacing a faulty thermostat gateway without additional charge."
Serving Washington, DC and surrounding areas
Approved
In business since 2009
Emergency services offered
Credit card accepted
"JC & JC HVAC worked diligently to replace my old dysfunctional air conditioner & replaced the furnace. I am getting cold air at last though weather is now cooler moving into the fall. I would recommend their service."
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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