Top-rated air conditioning pros.

Get matched with top air conditioning pros in Darlington, MD

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Air conditioning pros in Darlington

Avatar for Blessed Cooling N Heating Services, LLC
Blessed Cooling N Heating Services, LLC
4.9(
17
)
Central A/C - Service or Repair

Serving Darlington, 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."
Response time50 mins
Recommended by93%of homeowners
Avatar for At Your Service Heating & Cooling, LLC
At Your Service Heating & Cooling, LLC
4.3(
193
)
Central A/C - Service or Repair

Serving Darlington, MD and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"The company was a pleasure to work with. The quality and professionalism was good. The scheduling was quick and on time. I saw the previous complaints posted, but did not have any problems. I received their name thru Angies List and did not get additional estimates as it was 100 degrees and wanted AC ASAP. We told them that the fan wasn't working and needed repaired. They said the fan motor had a computer chip or some type of computer part with it and that's not common. After testing our AC unit their results showed that the condenser showed a good life span remaining. We were thinking about getting a new unit, they said it was our call but thought a repair would be a good choice. The boss called us and went over their findings and discussed our options. We decided to go with the repair due to the economy and their recommendation. When they removed the old motor they saw that it had been set to medium speed. Since I had previously told them our house is not balanced properly, he set it to high . The only thing I didn't care for was we had to pay for the estimate up front, but the fee was lower than I had expected. When we went to have it fixed they wanted the money up front again. I have always been taught to never do this but to put a deposit it down and pay in full when the job is complete. I did pay upfront again and did not have any problems. I do feel the fee was on the high side but again, I didn't get any other estimates and the other companies probably would have talked me into a new unit. We will see how long this unit lasts. The day after work was performed I had not received a receipt or warranty paperwork. I called the office and explained my thoughts of billing to them and they listened. Before I hung up my paperwork had been emailed to me. I would recommend them. They did not add any Freon and our unit is keeping our home cooler than ever. Thank you At Your Service."
Dundalk
Billboard 2
Billboard 3
Billboard 4
Billboard 5

+1

Response time11 hrs
Response rate95%
3 neighbors recently requested a quote
Avatar for Aire Serv of Bel Air
Aire Serv of Bel Air
4.7(
6
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Darlington, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1999

Free estimates

Emergency services offered

"Sunday 6/22 my mom's air conditioner was struggling. We called Aireserv who set up for their tech Bryson Bean to come out to mom's house. From the bright greeting smile as he introduced himself to the going over everything he was very professional and patient with all my questions. Highly recommend Aireserv for any of your heating and air conditioning issues. Thank you Bryson for being so you and personable."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+130

12 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Smart Energy Systems, Inc.
Smart Energy Systems, Inc.
4.3(
13
)
Central A/C - Install

Serving Darlington, MD and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"Great service all around! I needed a full swap, both a/c and furnace. They were great right from scheduling! They worked with me on financing which was a blessing. You can tell they care about the quality of their work and went above and beyond in every way!"
Response time8 hrs
Response rate100%
12 neighbors recently requested a quote
Avatar for Forest Hill Heating & Air
Forest Hill Heating & Air
4.1(
5
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Darlington, MD and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"When itâ s the heat of the summer and you come home to no AC itâ s never going to be good. From my initial call I had someone address my issue within hours. A very punctual, professional, polite and knowledgeable man came to my door. He gave me my options and I felt very comfortable with what we decided yo do. He said what we needed in exactly the time frame he thought it would take and once again showed up at the exact time he said he would. He truly went above and beyond what our expectations were. We are very happy and would certainly recommend Forest Hill Heating and Air to anyone."
Oil Furnace With Heat Pump
Bosch Air Handler
Mitsubsihi "Hyper Heat" Heat Pump
Buderus Boiler
Mitsubishi "Hyper Heat" Heat Pump

+6

Response time1 day
Response rate86%
Recommended by75%of homeowners
Avatar for Constellation Home
Constellation Home
4.3(
9
)
Central A/C - InstallCentral Air Cleaner - Install or ReplaceDuctless Mini-split A/C - Install or Replace

Serving Darlington, MD and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

"I actually had a hot water heater installed but that was not an option. I had a fantastic experience with constellation home. great service and friendly staff. Right from the start their customer service and salesperson Trent was exceptional. he went over and beyond to answer all of my questions and ensure that I had exactly what I needed and made the entire process so easy. The professionalism of their sales and installers are unmatched. Their service exceeded my expectations in terms of quality,price and installation. The installers of my hot water heater,Jordan Coleman and James Julia, were on time and explain the entire installation to me and answered all questions that I had. I would highly recommend CONSTELLATION HOME. thank you."
Constellation Home HVAC Technician
Constellation Home AC installation team
AC installation Day
AC Install
Constellation Home

+2

Response time2 hrs
Response rate91%
Recommended by50%of homeowners
...
Showing 1-10 of 235

FAQs for air conditioning projects in Darlington, MD

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.

The Darlington, MD homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.