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Top-Rated Air conditioning pros in Keymar - Updated Nov 2026

Avatar for Holtzople Heating, Air Conditioning, & Electrical Services
Holtzople Heating, Air Conditioning, & Electrical Services
4.9(
214
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+2 more

Serving Keymar, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Emergency services offered

"Holtzople installed our new ac/heating unit in 2021. The company and service has been fabulous from the beginning. Today we had our comfort care service of our main unit and split units. The service technician, Tim was punctual, professional and a diligent worker. He took care of both units, installed an air scrubber and leveled our outside unit. Great service technician and very knowledgeable. We continue to be very pleased with the service Holtzople provides for their products."
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+47

Response time1 day
Response rate100%
46 neighbors recently requested a quote
Avatar for Tim Kyle Electric Heating & Cooling
Tim Kyle Electric Heating & Cooling
4.9(
370
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Keymar, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1986

Emergency services offered

Warranties offered

"Showed up late, didn't install the bathroom fan as the manufacturer recommended (pic, fan5), dented the fan grille (pic, fan1). It was installed without the supplied support rails because he claimed he couldn't get in the attic. Now sure how I got the photos, then... The vent hose was kinked in the attic and hardly any air came out of the soffit, so I had to go into the attic to correct it. That's when I took the photos. Didn't give a price up front because apparently a bath fan with bluetooth speakers isn't in whatever book they price from. Not in the book? Overcharge. Generally very unhappy with the whole experience and will be looking elsewhere in the future. Not sure how when the customer supplies EVERYTHING but a romex clamp someone can charge so much. Absolutely unacceptable. $465 to have someone dent my fan, install it incorrectly, and throw out the parts that weren't used. Like the battery to the manufacturer supplied remote and the joist supports. I'm leaving the cost of service as originally quoted because it was only lowered to $465 after I complained about being ripped off."
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+17

Response time1 day
Response rate100%
14 neighbors recently requested a quote
Avatar for MSR Heating and Cooling, LLC
MSR Heating and Cooling, LLC
4.8(
33
)
Central A/C - Service or Repair

Serving Keymar, MD and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Moises came out the same day that I requested an estimate for the installation of a UV light whole house air purification system, and to chemically clean my AC coil. I had another estimate but Moises gave me a better deal. He also recommended getting a cover for my AC unit for the winter, when he opened it up it was full of leaves and debris. I am very satisfied with the work that was done and would highly recommend MSR."
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+8

Response time4 hrs
Response rate99%
2 neighbors recently requested a quote
Avatar for Tetteris HVAC
Tetteris HVAC
4.7(
192
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Keymar, MD and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"My experience with him was top notch. He was accommodating to my schedule. I work nights and he was willing to come to my home in the early evening instead of normal business hours. He assured me the fix of the leak would hold until the end of summer but there was a chance that I may need a new unit next summer since the unit is over 10 years old and the leak was pretty severe. I had no other trouble with the unit the rest of the summer. His price was reasonable and he was friendly and efficienct. If I need a new unit next summer I will definitely use Tetteris Heating and Air for the replacement."
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10 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for The Best Air Quality and Restoration
The Best Air Quality and Restoration
4.8(
236
)
Air Ducts & Vents - Clean

Serving Keymar, MD and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"It started off with requesting a quote through Best Air Quality and Restoration. The response time was great. The technician who showed up informed us in advance of his arrival, was very polite, followed Covid-19 safety protocols, was very thorough and did a great job. I also got the dryer vent cleaning which was the complete deal (going to the attic, removing the vent pipe and cleaning the debris). Some other companies claim they do dryer vent cleaning but only vacuum the dryer duct and do not perform the complete dryer vent cleaning which is more involved. I'm very happy with the service and this company and have already recommended them too many of my friends. Keep up the great service Best Air Quality and Restoration!"
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+50

Response time10 hrs
1 neighbors recently requested a quote
Recommended by93%of homeowners
Markool Heating & Cooling, LLC
4.7(
21
)
Air Ducts & Vents - CleanCentral A/C - InstallCentral A/C - Install - For Business+4 more

Serving Keymar, MD and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Woke up this morning to my hvac leaking and contacted Markool. I have never used them before and was in a pinch. They fit me right in this morning and were out at my house within 2 hours. The tech stepped in the door and placed covers for his shoes so he did not track in any dirt which was impressive! The tech was very professional and super friendly. Problem was diagnosed and FIXED within an hour. The price was extremely reasonable to the point I was shocked in a good way (expecting a higher price). Anyways, I will most certainly be a returning customer. Thank you Markool Heating Cooling Plumbing."
Response time7 hrs
5 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Wenbrooke Services
Wenbrooke Services
4.6(
107
)
Central A/C - Install

Serving Keymar, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Emergency services offered

Warranties offered

"The original job was to add 30 amp access outside of garage so I could plug in my RV. They fixed a breaker, updated the panel for the 30 Amp job and added GFI's to the panel for 4 areas. They were 2 for the kitchen, 1 for the pool, and 1 for the garage. Both electricians I dealt with were very professional and knowledgeable. The actual work was done quickly. He explained what he did and made future recommendations."
Commercial Sign
Dinning room fixture
Commercial Office
Kitchen Pendants
Response time11 hrs
87 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Mack's Home Services, LLC
Mack's Home Services, LLC
4.7(
603
)
Air Ducts & Vents - Clean

Serving Keymar, MD and surrounding areas

Approved

In business since 1993

Free estimates

Emergency services offered

"Our dryer vents from the center of the house to just under the second story eves. He did a great job of cleaning it from both ends, and adjusted the dryer hose to an optimal length and resealed it with tape. Also cleaned vents well. I am very particular about mechanics, handymen, and service people. Mack's is on the short list of people I will hire again. The serviceperson was polite and personable as well as very competent. And, he took pains not to track up the carpets. Mack's is a good choice. You'll be satisfied w the results."
Response time3 hrs
1 neighbors recently requested a quote
Recommended by99%of homeowners
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Air Conditioning FAQs, answered by experts

Yes, high-efficiency models reduce environmental impact with lower energy use.

It depends on the type of AC unit and the extent of the mold growth. For example, if you have a small amount of mold in your central air conditioner, it’s worth cleaning it to protect your HVAC system and your health. In situations like these, you can often remove the mold yourself in a couple of hours. On the other hand, if you have a portable AC unit with a severe mold problem, it makes more sense to buy a new one. On average, replacing a portable AC unit costs $100 to $500.

If your central AC is not blowing cold air, you should try resetting the system. Many systems have a reset button. Make sure your thermostat is off, then turn off the circuit breaker that powers your AC. Hold the reset button for three to five seconds, then turn the circuit back on. Set your thermostat to cool and choose a temperature cooler than the room. Your system should turn on quickly.

Troubleshooting common issues with your AC often sheds light on a problem with the compressor. Signs that you need to replace a bad compressor include your AC blowing warm air, short cycling (turning on and off), making strange noises, and blowing less air overall. Since these problems can stem from several areas of your AC, always call a local AC repair team to confirm it's the compressor.

The cost to replace an AC unit averages around $5,900, with a typical range between $3,900 and $8,020. The final price depends on several factors, including the type and size of the air conditioner, its efficiency rating, your geographic region, and labor costs for installation. Smaller units like portable and window ACs are much less expensive, costing between $90 and $550, compared to central or ductless systems. If your current unit is less than 10 years old, repairing it may be more cost-effective than a full replacement.

The Keymar, MD homeowners’ guide to air conditioning services

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