Serving Boonsboro, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2002
Free estimates
Emergency services offered
"They are prefect! Lifetime heating and air conditioning company."
+47
Serving Boonsboro, MD and surrounding areas
Approved
In business since 1936
Free estimates
Emergency services offered
"My technician, Lily, was right on time. It was her first time to my home and she was very friendly and informative. She explained what went wrong and also showed me how to maintain some things through my routine maintenance. My service call involved a charge as it was Service, labor plus Freon to be added to my unit and the outside unit's battery. Since I have a contract with McCrea, I was not charged for the part that was to be replaced on my unit. My house is slowly cooling down as it was 90 degrees inside my home when she arrived this morning. My house lost the air conditioning on the Fourth of July and on a very hot day. I would highly recommend McCrea Heating and Air Conditioning Services of PA."
Serving Boonsboro, MD and surrounding areas
Approved (Corporate)
In business since 1970
Free estimates
Warranties offered
"My experience was fine. I went with this company instead of another company because of the reviews I read on Angie's List. It took them about a half a day to install the air conditioning unit. I think it was 3 workers that came out."
Serving Boonsboro, MD and surrounding areas
Approved
In business since 2014
Free estimates
Emergency services offered
"The replacement of air conditioning system was done smoothly. The salesperson - Adam - explained me all pros and cons of various options, and we agreed on the option which is cost efficient and took into account all my preferences. The installers - Shane and Shon - are nice guys, worked efficiently and have done the job in half a day. They even fixed some part of my heating system free of charge. Overall, very positive impression, highly recommend."
Serving Boonsboro, MD and surrounding areas
Approved
In business since 1989
Free estimates
Emergency services offered
"Customer service was excellent!! The job was done in a timely manner. Service on our A/C unit was excellent. Would highly recommend this company."
+5
Serving Boonsboro, MD and surrounding areas
Approved
In business since 2019
Free estimates
Warranties offered
"Just started working with Markool this summer and they have been fantastic! When I need service, they are so fast and every person we have interacted with has been polite, knowledgeable and personable. We unexpectedly needed to replace our system during a heat wave and they were super. So responsive and quick. I would highly recommend Markool for all of your HVAC needs!"
Serving Boonsboro, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2015
Emergency services offered
Warranties offered
"They were all very nice and professional. They did an outstanding job on replacing our heating and air unit."
Serving Boonsboro, MD and surrounding areas
Approved (Corporate)
In business since 1981
Free estimates
Emergency services offered
"It was pricy, but it was good service. Well, that's hard to say because it's all expensive, as oppose to any other air conditioning company, it's about the same, just too much money in general."
Serving Boonsboro, MD and surrounding areas
Approved
In business since 1976
Emergency services offered
Warranties offered
"I regularly use their plumbing and heating services."
+11
Serving Boonsboro, MD and surrounding areas
Approved (Corporate)
In business since 2009
Free estimates
Credit card accepted
Comfort First Heating & Cooling is the team you need for all your home solutions. Comprehensive comfort is our legacy.\n\nWe're dedicated to delivering unparalleled customer service that mirrors our core values of integrity, stewardship, and excellence.\n\nWe look forward to having you join the Comfort First family as we continue our mission of creating customers for life by earning your business.
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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