Serving Fredericksburg, 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."
+29
Serving Fredericksburg, VA and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"Chris answered all of our questions and explained each step he would take to fix the issues we were having with air flow. After the install, everything is working great!"
Serving Fredericksburg, VA and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
"AMJ Air did an excellent job with my AC repair. The technician arrived on time, quickly diagnosed the issue, and explained everything in a clear and honest way. The repair was completed the same day, and my system has been running perfectly since. Professional, knowledgeable, and easy to work with—I highly recommend AMJ Air for any HVAC needs."
+2
Serving Fredericksburg, VA and surrounding areas
Approved
Super Service Award Winner
In business since 2016
Free estimates
Emergency services offered
"Quickly diagnosed the central air conditioning system, and gave an estimate on the cost of recharging the refrigerant in the compressor. The system is a 14 year old Carrier unit. Albert also included some sealant that may plug up the slow leak of refrigerant that occurs every 2 years or so. Albert also, showed me how to adjust the damper to control the flow of air to the second and third floors of the house. The other company that arrived wanted to charge me $5,000 to repair the system or close to $7,000 to replace the AC system with new. I intend to call upon Magna Tech Temp Air, Inc when I'm ready to purchase a new HVAC system. Thanks again for taking the time to listen to my concerns. Well done!!!"
+4
Serving Fredericksburg, VA and surrounding areas
Approved
In business since 1936
Free estimates
Emergency services offered
"The technician (Shammion) arrived on time and spent time listening to my concerns and answered my questions before proceeding with the work. Shammion has serviced my furnace and a/c unit previously, and on each occasion he has spent time informing me how various parts of my HVAC should work and what I need to do to get the most from the systems. On this occasion, Shammion instructed me on how to use my new thermostat and how best to keep my condenser coil clean in the future. The work was done expertly and in a professional manner, and I highly recommend Shammion and McCrea Heating and Air Conditioning."
Serving Fredericksburg, VA and surrounding areas
Approved
Super Service Award Winner
In business since 1995
Free estimates
Emergency services offered
"I am so happy with my AC working like it is brand new! I so appreciate Matthew Thomas for finding the problem and getting the job done! His polite conversation and knowledge of the problem made me feel comfortable asking him questions, and his answers were in language I could understand🤣 Thank you OHA, Gail & Mick"
+3
Serving Fredericksburg, VA and surrounding areas
Approved (Corporate)
In business since 2000
Free estimates
Credit card accepted
"OUTSTANDING JOB, REPLACED MY OLD CENTRAL AIR CONDITION SYSTEM."
Serving Fredericksburg, VA and surrounding areas
Approved (Corporate)
In business since 1950
Free estimates
Emergency services offered
"The team was very helpful with identifying the issue with our heating system and providing guidance on how to proceed. We replaced the entire system (which was 10 years old). Very happy with the end result. The air is so much cleaner and my son's allergies have significantly reduced."
Serving Fredericksburg, VA and surrounding areas
Approved
In business since 1998
Free estimates
Emergency services offered
"Pros- Technician was very knowledgeable. Learned some things about HVAC. Also very courteous and friendly. Cons- price was not what was quoted. S"
Serving Fredericksburg, 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
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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