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Verified Reviews for Air Conditioning pros in Jefferson, MD

*The Angi rating for Air Conditioning companies in Jefferson, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.

*The HomeAdvisor rating for Air Conditioning companies in Jefferson, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.

Last update on July 17, 2026

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Avatar for Holtzople Heating, Air Conditioning, & Electrical Services
Holtzople Heating, Air Conditioning, & Electrical Services
4.9(
211
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+3 more

Serving Jefferson, 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%
22 neighbors recently requested a quote
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Avatar for McCrea Heating & Air Conditioning Services of PA
McCrea Heating & Air Conditioning Services of PA
4.7(
317
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+2 more

Serving Jefferson, 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."
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7 neighbors recently requested a quote
Recommended by95%of homeowners
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Avatar for GAC Services
GAC Services
4.8(
293
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Jefferson, 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."
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6 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for MSR Heating and Cooling, LLC
MSR Heating and Cooling, LLC
4.8(
33
)
Central A/C - Service or Repair

Serving Jefferson, 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."
Our Work
Our Work
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Our Work
Our Work

+8

Response time4 hrs
Response rate99%
1 neighbors recently requested a quote
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Avatar for Michael Bonsby HVAC, Plumbing & Electrical MD
Michael Bonsby HVAC, Plumbing & Electrical MD
4.2(
134
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Service or Repair

Serving Jefferson, MD and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"This was just a fall servicing, they did a great job."
Routine Maintenance
Maintenance
Mitsubish Ductless System
Outside Mitsubishi Unit
Carrier

+3

39 neighbors recently requested a quote
Recommended by90%of homeowners
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Avatar for Weather Masters Corporation
Weather Masters Corporation
4.7(
124
)
Central A/C - InstallCentral A/C - Install - For Business

Serving Jefferson, 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."
Response time2 days
45 neighbors recently requested a quote
Recommended by99%of homeowners
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Avatar for Harrell's Services
Harrell's Services
5.0(
6
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Jefferson, MD and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"I have an annual contract with R.W. Harrell's Pump Service to clean and service the heating and A/C systems at my home. Their employees and always prompt, courteous and professional and ALWAYS do an excellent job with cleaning up before they leave. Their prices are reasonable and I like dealing with locally owned companies as opposed to the nationally owned companies. I would highly recommend R.W. Harrell to all of my friends and relatives for their HVAC needs.
"
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+5

3 neighbors recently requested a quote
Recommended by80%of homeowners
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Markool Heating & Cooling, LLC
4.7(
21
)
Central A/C - InstallAir Ducts & Vents - CleanCentral A/C - Install - For Business+4 more

Serving Jefferson, MD and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Turned on the AC this morning to find out was blowing hot air, called up a few different companies who wanted minimum 100 bucks to come out blah blah blah, called up Markool and got connected with a technician. The technician helped me troubleshoot the issue, and have me a quick fix that will last until they make it out tomorrow to do the permanent fix. I'll be using them for all my AC needs in the future!"
Response time7 hrs
4 neighbors recently requested a quote
Recommended by84%of homeowners
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Avatar for ARS of Maryland
ARS of Maryland
4.1(
176
)
Central A/C - Service or RepairCentral A/C - Install

Serving Jefferson, MD and surrounding areas

Approved (Corporate)

In business since 1945

Free estimates

Emergency services offered

"The sales rep was very attentive when coming over and designing a solution to our heat and air needs. We were able to get a large team of workers here and knocked out an entire house install in one day. Some trash and miscellaneous items were left in our yard. When we needed additional items from the sales rep he will respond back saying he will take care of it but still has not. I have brought this up to him over 4 times and I still get nothing. The price seemed pretty high, and we had to shop the price around some but the company came with good financing options and some guarantees that others could not. The mini-split units work great."
New System Installation
1102 neighbors recently requested a quote
Recommended by73%of homeowners
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Avatar for Wenbrooke Services
Wenbrooke Services
4.6(
107
)
Central A/C - Install

Serving Jefferson, 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
19 neighbors recently requested a quote
Recommended by95%of homeowners
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Air Conditioning questions, answered by experts

Yes, it’s best to turn off an AC unit that’s blowing hot air to prevent system damage and avoid expensive energy bills. If you let the AC continue running, it will put more strain on the condenser coil and compressor. Plus, if the AC is blowing hot air because of a refrigerant leak, it can also lead to a frozen evaporator coil.

Most units are designed only to cool the house down to 20 degrees less than the temperature outside. This means that if it’s 99 degrees Fahrenheit out and you’re trying to cool your home down to 65 degrees, you’ll notice your AC is struggling. 

Lower the blinds on all your windows, turn on your ceiling fans, and keep the thermostat at a consistent temperature to help your AC do its job. Investing in an HVAC maintenance plan also helps because pros will come out to inspect and tune up your unit regularly, keeping it in optimal working condition.

Most HVAC service calls include diagnostic fees, which could include checking on a specific issue you’re experiencing or running through a routine inspection checklist. If you called for a particular problem, the service call will also include an estimate to fix the issue, including materials and labor. Depending on your HVAC technician and the service you requested, you might also get a general inspection of your system components to ensure everything is working as intended.

On average, replacing an AC compressor costs between $800 and $2,300, but it could cost as much as $2,800. There are a few factors that impact the price of a compressor replacement, including the type and size of the compressor, as well as the type of HVAC system and local labor rates.

Most HVAC surge protectors last about three to five years, depending on how often your home experiences blackouts or brownouts. If your unit is susceptible to more frequent electrical surges, consider replacing your surge protector every two years. Consult your HVAC professional to determine when and how often to replace your HVAC surge protectors.

The Jefferson, MD homeowners’ guide to air conditioning services

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

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