Serving Hillsborough, NC and surrounding areas
Approved
Super Service Award Winner
In business since 2007
Free estimates
Emergency services offered
"I highly recommend Carolina Comfort and Air. Tommy and Hassan were very professional and awesome to deal with."
+45
Serving Hillsborough, NC and surrounding areas
Approved
In business since 1996
Free estimates
Warranties offered
"Just had my first service check up on my heating and air conditioning unit. As was the install the scheduling was easy. The technician called prior to arrival. I met him at the door and he explained everything that the service included. Then he went about his business. The report was concise and I am extremely pleased with his professionalism and manner. I highly recommend Maynor for your installation and service needs."
Serving Hillsborough, NC and surrounding areas
Approved
In business since 1978
Free estimates
Emergency services offered
"Great! It turns out we were lucky and only needed a capacitor replaced. The visit was quick to arrange, and they arrived on time. They were very professional the whole time. They have since come again to maintain our A/C units. The scheduling is great, they call to make sure things are on time, and you receive text messages with updates."
Serving Hillsborough, NC and surrounding areas
Approved
In business since 1998
Free estimates
Credit card accepted
"Very quick response to fix my central air. Very efficient, knowledgeable and courteous. Cost was reasonable. I would definitely recommend this company!"
Serving Hillsborough, NC and surrounding areas
Approved (Corporate)
In business since 1972
Free estimates
Credit card accepted
"Heat pump actually needs to be replaced. Tech showed me video and testing he performed. And why my heat pump was not working. Got up to a cold house this morning. Tried everything I knew to get the house warmer. Called ARS, the scheduled tech and he showed up the same day. I will have to wait for new heat pump to come in. I am satisfied with service so far."
Serving Hillsborough, NC and surrounding areas
Approved
Super Service Award Winner
In business since 2001
Free estimates
Emergency services offered
"Austin and Thomas were courteous, efficient, prompt, and quiet. They installed my new A/C and Furnace in unbearably warm conditions. Despite this, they got the job done with patience and good humor."
+34
Serving Hillsborough, NC and surrounding areas
Approved
In business since 1951
Emergency services offered
Warranties offered
"Had a "Guardian Air" Air Purification System bulb changed after two (2) years of use. Great system, great company with knowledgeable and friendly staff. "Scotty" came out, installed the bulb and walked me through every question I had and gave me a few with answers that I hadn't though of. Thanks for the Great Service."
+1
Serving Hillsborough, NC and surrounding areas
Approved
In business since 2001
Emergency services offered
Warranties offered
"Streamline Services is my go to place for plumbing and hvac repairs. I always have fantastic and speedy service. My last service call was truly exceptional and worth taking the time to review. I knew I needed my water heater replaced, and also a repair to my air conditioning system. I didn't feel pressured, and the technician answered every question I had, and I did not feel rushed into any decision. From the first phone call, to the time of install, I received nothing but great customer service. I won't call anyone else."
+2
Serving Hillsborough, NC and surrounding areas
Approved
In business since 1987
Free estimates
Emergency services offered
"The salesperson, Will, was very knowledgeable and thorough with his assessment of our HVAC needs. The installation occurred 2 days after signing the paperwork and we are happy with the new unitâ s performance and efficiency. The customer service was excellent throughout the project."
Serving Hillsborough, NC and surrounding areas
Approved
In business since 2010
Free estimates
Credit card accepted
"My AC was tied into my plumbing pipe, they fixed the problem, by rerouting the water through a new pipe, therefore It can find its way outside without using the plumbing system."
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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