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Top-Rated Air conditioning pros in Owings Mills - Updated Nov 2026

Avatar for GLM Mechanical Services, Inc.
GLM Mechanical Services, Inc.
4.6(
66
)
Central A/C - Install

Serving Owings Mills, MD and surrounding areas

Approved

In business since 1978

Free estimates

Credit card accepted

When looking for professional HVAC services, look no further than GLM Mechanical Services, Inc. \nWhat we offer is honest, open estimating, with strict attention to detail and on time delivery. All we ask is when calling PLEASE speak english. WE can't help you if we can't understand what you need to tell us. Unfortunately, we do not offer attic installations when outdoor temperatures are so hot that attic temperatures can reach 100 degrees or higher. We cannot ask our employees to work under those conditions. We can bring to the table a level of expertise not usually available to residential projects. We have several years experience providing prompt and reliable services building your dreams into reality. We will always meet and exceed all expectations. Proudly handling the Goodman and Airtemp brands of HVAC equipment. Give us a call, you will be glad you did. \n \nWe now accept Visa, Mastercard, & Discover.

Recommended by100%of homeowners
Avatar for Graham Solution LLC
Graham Solution LLC
5.0(
19
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Owings Mills, MD and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"I couldn?t be happier with the experience. Graham Solution handled the entire installation from start to finish, and the quality of the work was outstanding. He was professional, knowledgeable, punctual, and paid close attention to every detail. The installation was completed efficiently, everything was left clean when the job was finished, and the system works perfectly. It?s hard to find someone who takes this much pride in their work, and it definitely shows. I highly recommend him to anyone looking for reliable, high-quality HVAC installation. Excellent workmanship and great customer service from start to finish!"
HVAC
HVAC
HVAC
HVAC
HVAC

+5

2 neighbors recently requested a quote
Avatar for Carroll Mechanical, Inc.
Carroll Mechanical, Inc.
5.0(
26
)
Central A/C - Service or Repair

Serving Owings Mills, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Emergency services offered

"Relieved - that's how I would describe working with Carroll Mechanical. Ever since another company installed my furnace 6 years ago, I don't think it was ever working right. A number of companies have come over the years but nobody was able to properly diagnose the problem until Drew from Carroll Mechanical showed up. He was wonderful from the start and had over 50 years of experience in the trade. He spent the whole morning at my house running a full diagnostic, including a detailed combustion analysis plus measurement of gas pressures, duct air pressures, air temperatures, electrical readings etc.... he explained them all to me patiently like a good doctor and told me we what we needed to do - adjust supply gas pressures and increase the size of the exhaust flue to get the right air/fuel balance. Previous companies just wanted to get in and get out, but these guys took their jobs seriously and were just lovely to deal with. Insanely smart, caring, and reasonable people."
Trane Heat Pump
Carrier AC + Furnace
Response time5 hrs
95 neighbors recently requested a quote
Recommended by21%of homeowners
Avatar for JDL HVAC & Plumbing Services
JDL HVAC & Plumbing Services
4.5(
951
)
Central A/C - Service or RepairCentral Humidifier - Install or ReplaceCentral Humidifier - Repair or Service

Serving Owings Mills, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"I am happy to write this review about JDL HVAC Services LLC. From start to finish; Amber, who setup my initial appointment was very nice & professional. Ire, the technical associate was prompt, very knowledgeable and got my system working again with a temporary fix. I opted for a new heating unit (which was reasonably priced) and all of the technical associates were easy-going and very professional. They were organized, used protective foot coverings and protective coverings for my floors, and cleaned up after the job. Special thanks to the entire team led by Armando; Jerel, Fernando, Michael, & Conrad. NOW, thanks to JDL HVAC, I FINALLY have a properly installed & functioning heating/air conditioning unit. I highly recommend this company!"
NEW INSTALL
CLEANING COILS
CLEANING COILS
 CLEANING COILS
 CLEANING COILS

+118

Response time5 hrs
206 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for ARS of Maryland
ARS of Maryland
4.2(
181
)
Central A/C - Service or RepairCentral A/C - InstallCentral Humidifier - Install or Replace+3 more

Serving Owings Mills, MD and surrounding areas

Approved (Corporate)

In business since 1945

Free estimates

Emergency services offered

"Misunderstanding between Blue Dot and Baltimore County on the inspection.The unit was not installed according to Baltimore county code. Inspection has failed twice. Unit needs to be 3 feet from connection box. They have come out a couple times since the inspection has failed but the issue has not be resolved. It was clearly explained by Baltimore county what needed to be done. I always initiate the calls with them regarding this issue. I did not feel as if they are taking my situation seriously and I would not work them again. I was not advised I was being charged $75 to pay Baltimore County to inspect the Air Condition install. Promised by Jeff, supposedly, a manager a Rep would be at my house in 20 minutes on 12/17/19, no one showed. Jeff acted confused wanted to take a photo so he could figure out what needed to be done to move an Air Conditioning unit 3 ft from connector. Company trades under Blue Dot HVAC. Richard was very friendly and helpful with accommodating the codes for the County."
New System Installation
163 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for Heil Plumbing & Hvac
Heil Plumbing & Hvac
4.9(
252
)
Central A/C - Install

Serving Owings Mills, MD and surrounding areas

Approved

In business since 1975

Free estimates

Emergency services offered

"We had a leak in the underground water supply line (polyblue) running from the County connection valve in the front yard to our townhouse. When I noticed the problem, the water was going all over the neighbor's yard. I called Heil Plumbing around 5:30PM that day and though their office was closed, I dialed their  emergency contact number and reached Tom. He gave me the County utilities emergency number to call to get the service turned off, and that he will call back with a time for someone to come out. He then called  back within a half hour to say Mr. Heil would be able to come that  evening to give an estimate. Mr. Heil drove up around 7PM and gave me an estimate that was about two-thirds of what my immediate neighbor was quoted for the same issue about 6 months ago - to replace the existing leaking polyblue line with 3/4" copper, which was the best option rather than trying to repair the polyblue, which would only leak again. We had about 25 feet of line to replace, at a depth of about 5-6 feet. He also said at the time that the quote would be $700 more if they had to break/replace the concrete porch. I asked him to go ahead and complete the work as soon as possible since we were without water by then. Mr. Heil stated that they would be able to come out the next morning by 8AM at the latest.
The next morning at 7:45AM a crew of three arrived with a backhoe, dump truck, plumbing truck and air compressor (I assumed for a jack hammer if they had to break up concrete and for tamping soil). They had a contract written up for the exact quote given earlier. Once I had signed, they hand dug two small pits, one by the house foundation, the other by the County meter valve. They used plywood sheets to put the excavated soil on, which saved the rest of the yard grass.  Luckily for me they didn't have to break any concrete. They located the two ends of the leaking polyblue line, pulled a steel cable through it, and then using the backhoe bucket and some equipment, pulled through the new copper line while pulling out the old plastic line. Then the new copper line was connected to the copper line coming out of the house and to the meter valve box. They then turned on the water and checked all the inside faucets. The kitchen faucet sprayer head was somehow blown out by the air being forced out when they turned the water on, and they replaced that free of charge. They then filled in the soil, compacting soil lifts with a tamper as they should, seeded and mulched the top of the disturbed area, and cleaned everything up. Took away a little bit of extra soil. Everything was done by 12.30 PM. They charged only what they had estimated, and like I said before, even replaced a faucet piece that came off when the water was turned on, free of charge. I was very impressed with the professionalism, promptness and quality of work shown by Joseph Heil Company, and recommend them very highly. I not only saved almost $1000 because their fee was low, I also saved a few hundred more I would have had to spend on hotel rooms if they had not been so prompt.
"
Response time9 hrs
27 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Carroll Mechanical, Inc.
Carroll Mechanical, Inc.
4.7(
25
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Owings Mills, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Warranties offered

"I recently had a HVAC and water heater installation by Carroll Mechanical, Cris Lopez and his team. They were very respectful of my home and professional throughout the install. I am grateful and appreciative of working with the owner on deciding the HVAC unit to be installed. I found him to be the consummate professional, a person of integrity, transparent, responsive to my questions and willing to work with me to gain my business. I highly recommend Carroll Mechanical."
Ins
Ins
Response time10 hrs
275 neighbors recently requested a quote
Recommended by14%of homeowners
Avatar for Horizon Services, LLC (MD)
Horizon Services, LLC (MD)
3.8(
1,465
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Install or Replace+4 more

Serving Owings Mills, 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....."
Horizon Services Heating and Cooling
Horizon Services Heating and Cooling
Horizon Services Heating and Cooling
Horizon Services Heating and Cooling
Horizon Services Heating and Cooling

+27

10 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Blue Dot
Blue Dot
4.1(
353
)
Central A/C - Service or RepairCentral A/C - InstallCentral Air Cleaner - Install or Replace+3 more

Serving Owings Mills, MD and surrounding areas

Approved (Corporate)

In business since 1982

Free estimates

Emergency services offered

"Paul S, the tech who came to maintain my furnace and air scrubber system was very knowledgeable, friendly, communicative and extremely helpful. The appointment system and text updates are terrific! Thank you to all!"
System Installation
498 neighbors recently requested a quote
Recommended by70%of homeowners
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FAQs for air conditioning projects in Owings Mills, 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 Owings Mills, MD homeowners’ guide to air conditioning services

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