Serving Nottingham, MD and surrounding areas
Approved
In business since 2013
Free estimates
Warranties offered
"Genuinely honest, technically competent, and a penchant for pragmatic solutioning are the best ways I can describe Aaron and Blessed Cooling and Heating. They are at the top of our list for any future HVAC work."
Serving Nottingham, MD and surrounding areas
Approved
Super Service Award Winner
Free estimates
Emergency services offered
Warranties offered
"Ductwork was done very neat and professional."
+20
Serving Nottingham, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2009
Emergency services offered
Warranties offered
"Doug at Bamford came on time and had the water heater installed without any problems. Smooth service from start to finish.
"
+2
Serving Nottingham, MD and surrounding areas
Approved
In business since 2008
Free estimates
Emergency services offered
"I called Pohlman to replace my Gas water heater. I was very pleased with their service. They were very professional, came out on the same day, took the old tank with them and cleaned up well behind themselves, They finish the job in a timely manner and their price was fair. I would definitely hire them again."
+10
Serving Nottingham, MD and surrounding areas
Approved (Corporate)
In business since 1945
Free estimates
Emergency services offered
"Arrived on time , very detailed on a very difficult install . The installation team checked all the boxes, I highly recommend this company for air-conditioning services."
Serving Nottingham, MD and surrounding areas
Approved (Corporate)
In business since 1982
Free estimates
Emergency services offered
"The technician who serviced our furnace did an excellent job. He is knowledgeable, efficient, and courteous. We welcome him to attend to our heating and air conditioning needs at any time."
Serving Nottingham, MD and surrounding areas
Approved
In business since 2013
Free estimates
Emergency services offered
"They are prompt, courteous and know air conditioners"
+1
Serving Nottingham, MD and surrounding areas
Approved
In business since 1989
Free estimates
Emergency services offered
"Fantastic company from start to finish! The gentleman who sold us the furnace, their salesman, Alex, was upfront in getting us the best price, along with a 10 yr parts and labor warranty included! The price for the furnace and installation was great, and they guaranteed apples to apples to meet any other companies cost. They offer a $100. fee if we found anyone to do it cheaper, with the same offer. They were able to schedule the intallation quickly, and did a great job intalling it. I would highly recommend using this company for your heating and air conditioning needs. Great company! Great prices! Great work! You won't be disappointed using Horizon Services! Take care....."
+27
Serving Nottingham, MD and surrounding areas
Approved
In business since 1982
Warranties offered
Credit card accepted
We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our major focus is on the quality our work and producing outstanding results. We are committed to creating a level of value unmatched by any of our competitors. We look forward to building lasting relationships with our clients and guarantee your satisfaction!
+6
Serving Nottingham, MD and surrounding areas
Approved
In business since 2025
Emergency services offered
Small jobs welcome
"I recently had a new HVAC system installed, and I couldn’t be happier with the experience. From the initial consultation to the final installation, the team was professional, knowledgeable, and efficient. They took the time to explain all my options, helped me choose the right system for my home, and answered every question clearly. The installation was completed on schedule, and the crew kept everything clean and organized throughout the process. The system runs quietly and has already made a huge difference in comfort and energy efficiency. I highly recommend this company to anyone looking to install or replace their HVAC system. Excellent service, fair pricing, and top-quality workmanship!"
+23
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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