Serving Dale City, VA and surrounding areas
Approved
In business since 1936
Free estimates
Emergency services offered
"The service was great. A professional job and explained everything as he went along. I would recommend this company for service on your Air Conditioner"
Serving Dale City, VA and surrounding areas
Approved
Super Service Award Winner
In business since 2016
Free estimates
Emergency services offered
"Albert was very prompt in replying to my request for service through Home Advisor. He was also able to repair my air conditioner the very next day. He appeared to be very knowledgable, professional and friendly."
+4
Serving Dale City, VA and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Emergency services offered
"My house to install HVAC system is in Virginia Beach, Virginia."
+11
Serving Dale City, VA and surrounding areas
Approved
In business since 2013
Free estimates
Emergency services offered
"Super fast, reliable and efficient!!! T was at my house in less than 10 min after we talked over the phone. My AC broke and house was super hot. T even brought his portable AC and temporary installed it I m my bedroom until he replaced the unit. Highly recommend. Knowledgeable and professional"
+99
Serving Dale City, VA and surrounding areas
Approved (Corporate)
In business since 1950
Free estimates
Emergency services offered
"This was for semiannual maintenance under contract. Danny performed an excellent job, he has many years of experience. I have used ARS for the heating/air conditioning maintenance for about 35 years. They replaced the equipment about six years ago. It has not failed since replacement."
Serving Dale City, VA and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"Company called instantly upon getting Service Magic request for emergency service and tech arrived an hour later. Tech helpful, professional, fast working. Another company previously said I had a faulty gas valve and would have to replace furnace because parts not available for 30+ year old furnace. However, Consumer's Choice tech said valve fine; just cleaned out pilot light and I had heat again at low cost. Also gave estimate on smaller (more suitably sized), more efficient furnace if I did need to replace because heat exchanger is rusting out. Will definitely consider them for future service or install. Very satisfied with this experience."
Serving Dale City, VA and surrounding areas
Approved
In business since 1994
Emergency services offered
Warranties offered
"Our AC broke at the worst time: Memorial Day weekend. We called several emergency repair companies before Dominion Services, but none of their emergency technicians got back to us. We waited for over twelve hours in our hot home for someone to call us back. Finally, we used Home Advisor to contact Dominion Services Heating & Air. We immediately got a call from the company to confirm our appointment! The technician (Tarone?) was at our house within an hour and had the problem fixed in 30 minutes. I could have cried I was so relieved. Excellent service. We will definitely be using them for all of our future HVAC maintenance and services!"
+7
Serving Dale City, VA and surrounding areas
Approved (Corporate)
In business since 1903
Emergency services offered
Warranties offered
With over 100 years experience, we know how to keep you comfortable, safe and help you save on energy costs. Our local 24/7 customer service and support means automatic heating oil deliveries and our service response is always fast. We never run out of heating oil plus our pricing and payment plans are designed to help you manage your costs all year round. Experience the Petro difference today!
Serving Dale City, VA and surrounding areas
Approved
In business since 2012
Free estimates
Offers commercial services
"T&J Service installed a beautiful new Trane system at my home in Fairfax on May 14, 2024. They were recommended to me by my neighbor who has been using them for many years. Without a doubt, Diep and Tran are the most highly-skilled HVAC professionals that I have encountered in over 40 years. This was a very large, complex system to install and they got it done in one day. These are some of the hardest working, most dedicated guys that I've ever seen! I absolutely love my new Trane system. They even custom made a beautiful plenum for my air handler --handcrafted out of stainless steel (Diep is also a skilled metal craftsman). 5 STARS"
Serving Dale City, VA and surrounding areas
Approved
Super Service Award Winner
In business since 1972
Free estimates
Emergency services offered
"My air conditioning was repaired, now it's nice and cool in the house ."
+3
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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