Serving Lexington, NC and surrounding areas
Approved
Super Service Award Winner
In business since 1999
Free estimates
Emergency services offered
"QRC did an awesome job with my HVAC replacement! Highly recommend them for any of your HVAC needs!"
+21
Serving Lexington, NC and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"The were great and really good. They make sure that the unit was working properly."
+4
Serving Lexington, NC and surrounding areas
Approved
In business since 2023
Free estimates
Credit card accepted
"Fast professional most reasonable. I will ues this company when needed in the future."
Serving Lexington, NC and surrounding areas
Approved
In business since 2024
Free estimates
Emergency services offered
"The company is so helpful and actually cares about getting things right! AC works better than ever and I am ready for the summer now!"
Serving Lexington, NC and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"Excellence in HVAC and the human spirit. That is truly hard to find in today's corrupt world. Christopher is an exceptional young man, and exuded every good quality of an upright character. I didn't know how to reach Miller's, so I left an AI automatic generated message, emailed Austin, and waited for a call back on the weekend mind you! Austin saw his email, and staff saw the AI, and Austin fielded the call to Christopher who called me and promptly came out. I can't say enough about the heart of this business. They follow this biblical teaching in the Bible: Philippians 2:3,4,5 Let nothing be done through selfish ambition or conceit, but in lowliness of mind let each esteem others better than himself. Let each of you look out not only for his own interests, but also for the interests of others. Let this mind be in you which was also in Christ Jesus. Need I say more? May God bless your business for the kindness and generosity you have shown."
+8
Serving Lexington, NC and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"We've been using this HVAC company at our restaurant, Curry and Noodle in Winston-Salem, and we couldn't be happier. Running a busy kitchen means our heating and cooling systems take a real beating, and Chris has been nothing short of amazing. He shows up on time, communicates clearly, and always makes sure everything is running perfectly before he leaves. It's rare to find someone who treats your business like it's their own — but that's exactly how Chris makes you feel. Highly recommend to any business owner in the area looking for reliable, honest HVAC service!"
+4
Serving Lexington, NC and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"Our system went down, Blown Away showed up within a few hours, diagnosed the problem and recommended a full unit replacement. We are very pleased with the results and we will use this company again in the future."
+53
Serving Lexington, NC and surrounding areas
Approved
In business since 2022
Free estimates
Credit card accepted
"Very professional and honest. He did an exceptional job."
Serving Lexington, NC and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"Well pleased with company. Would recomend them to anyone needing heating&air repair."
Serving Lexington, NC and surrounding areas
Approved
In business since 2013
Emergency services offered
Warranties offered
"Excellent customer service, Good quality and completed the job in a timely matter."
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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