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Avatar for Presidential Heating & Air Conditioning
Presidential Heating & Air Conditioning
4.6(
455
)

Serving Frederick, MD and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1982

Free estimates

Emergency services offered

"The Air Conditioner service man who is Walter Gil gave excellent service for the Air Condition, He had great rapport with the customer and answer all the questions that I asked. I rated him five stars for his services."
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+6

26 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Tim Kyle Electric Heating & Cooling
Tim Kyle Electric Heating & Cooling
4.9(
369
)

Serving Frederick, 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%
25 neighbors recently requested a quote
Avatar for BlueStar Air Mechanical Inc.
BlueStar Air Mechanical Inc.
4.9(
32
)

Serving Frederick, MD and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"I contacted Bluestar Air Mechanical for a second opinion after an appointment with Air One. I have a Carrier HVAC system, and the Air One technician recommended a complete system replacement, claiming the blower was bad, the furnace control board needed replacing, and that there were other issues. Since replacing the HVAC is a big investment, I wanted to get a second opinion. It was only after comparing the service from Bluestar that I realized Air One may have been pushing for a new system sale or lacked the expertise to properly diagnose and repair the actual problems. Isaac, the technician from Bluestar, spent about an hour thoroughly diagnosing and fixing the issues. He found burnt wiring in the furnace and discovered that the wrong capacitor had been incorrectly installed in the AC. Isaac replaced the burnt wiring in the furnace and the capacitor in the AC. After these repairs, my Carrier system was back up and running—without the need for a costly replacement. Bluestar, and Isaac in particular, demonstrated professionalism, expertise, and honesty. They focused on resolving the actual issues instead of pushing for an unnecessary system replacement. I highly recommend Bluestar for their reliable service and Isaac’s thorough and knowledgeable work."
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+13

Response time3 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for Buric Heating and Air Conditioning
Buric Heating and Air Conditioning
4.7(
20
)

Serving Frederick, MD and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"I called Buric (on advice of friend/neighbor) when A/C wasn't working and I asked what to expect in their charges. The guy on the phone told me they charge a flat $95 (or $99?) for driving out here. So I asked if they charge by the hour or half hour. No, he said, by the job. He couldn't give me an estimate because he didn't know what was wrong. So, a technician came out and diagnosed my unit (which blew air but didn't get cold) as old & dead and needing replacement. So, in my mind, there was really there was no job outside of replacement. In their mind, they did a job by taking 10 minutes to look at the unit and tell me there was nothing to be done for it. So, instead of charging me $99 for coming out, they charged me $230 for coming out AND telling me the unit couldn't be fixed. That irritated me. Then I asked for a bid for new system. The guy went out and talked on the phone to his boss and come back with a written bid. I later compared it with my second bid from another co. Buric's bid was higher than the company I selected, but not enough to sway me if I had liked their way of doing business. However, the previous (over)charge, which was not explained by the guy I spoke to when I first called, left such a bad taste in my mouth I couldn't go with them. So that extra $130 they made cost them around $5000. I hope it was worth it to them. BTW, if I had gone with them, they would have subtracted the $230 from the bid, but I just couldn't get past it. So, I am not saying anything about the quality of their work--it may be just fine, but I don't like the way they did business."
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+7

Response time8 hrs
2 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Hecomo
Hecomo
5.0(
11
)

Serving Frederick, MD and surrounding areas

Approved

Credit card accepted

Customers say: True professional

"I had the best experience with Hecomo Heating & Cooling. My house's AC/heating system stopped working all of the sudden and the temperatures at the time were 90 degrees and up. I was desperate looking into many different companies. Many of them, came over to my house and did estimates at ridiculously high prices. Luckily, I found Hecomo. They came to my house, did an estimate and were ready to install my AC/heating unit very quickly and at a good price. Also, the customer service was great. They were there for me throughout the whole process. They explained to me everything that I needed to know about the system and the features. Everything is very modern and updated. I am very happy I found Hecomo."
Heating & A/C Project
Heating & A/C Project
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+8

Response time8 hrs
Response rate100%
8 neighbors recently requested a quote
Avatar for GAC Services
GAC Services
4.8(
293
)

Serving Frederick, MD and surrounding areas

Approved (Corporate)

In business since 1970

Free estimates

Warranties offered

"GAC services was able to come out for a same day trouble shooting appointment. Jim S arrived on time and was very courteous and professional. He was able to quickly identify the problem with the registers and dampers and able to get warm air flowing to the otherwise very cold areas of the house. In addition, Jim was able to recommend some additional services that would help me achieve the desired evenness of temperature such as an additional return and humidifier for the home. Great experienced master certified technician!"
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6 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for McCrea Heating & Air Conditioning Services of MD
McCrea Heating & Air Conditioning Services of MD
4.5(
318
)

Serving Frederick, MD and surrounding areas

Approved

In business since 1936

Free estimates

Emergency services offered

"We had them Replaced furnace and air conditioning unit. It was installed about a year ago but they came out for a regular service about a month ago. the service was free, part of the contract. I have no complaints, it was all good. They were responsive. they were punctual. I have no problems, it was a good deal when I bought it, it's a good deal now. I don't have any issues with how the service went. i bought it through them and I have no regrets and everything was the same as I felt when I bought it. It was a good deal, I made the right choice. Anytime you buy a major system and it doesn't go right you have a problem. I'm a happy camper.1 worker took less than an hour to complete."
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12 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Simply Home Service, LLC
Simply Home Service, LLC
5.0(
30
)

Serving Frederick, MD and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Sean was very prompt in responding to me request for service and did his absolute best to accommodate my schedule at my convenience. He was very flexible overall and helped get my AC repair ASAP after it was broken. This was especially helpful since it was getting warm outside! He was on time for all of our appointments and communicated what needed to be done/fixed clearly, so I wasn’t left with a huge bill that I wasn’t expecting. Expectations are very important and he seems to understand. I would highly recommend Sean and/or his team for any issues you might have for a cost effective and friendly solution. Thank you so much for your help Sean!"
Response time3 hrs
Response rate97%
Recommended by93%of homeowners
Avatar for MSR Heating and Cooling, LLC
MSR Heating and Cooling, LLC
4.8(
33
)

Serving Frederick, MD and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Moises, the company owner, is incredible. I called 5 HVAC companies to get quotes for full system replacement, and MSR was not only the most responsive, but he came out the very next day. He gave me an incredibly competitive and fair quote for my project, and we immediately gave him our business. Unfortunately, our AC died before he could do the work, but he came out to our house at 6pm on a Friday to drop off a portable AC unit so we wouldn't sweat all night long. We thought we'd be stuck without central air for a few days, but Moises came and worked 9 hours on a Saturday to replace both our furnace and our AC unit. Afterwards, he even gave us a great price on a yearly HVAC maintenance plan. MSR is run by an honest, hard-working tradesman who understands what customers want and need. I won't hesitate to recommend him to friends or to anyone who needs HVAC work done."
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+8

Response time4 hrs
Response rate99%
1 neighbors recently requested a quote
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Air Conditioning questions, answered by experts

It is possible to add air conditioning to an older home, but it can be very expensive to do so. Expect to pay anywhere from $6,000 to $17,000 or more for the ductwork and AC unit. You’ll also have to hack into the home’s walls and ceilings to add ductwork, which can impact the aesthetics of an old home.

Not if you have a standard unit. Because portable AC units actually work to dehumidify the room, you’ll likely need to drain the unit from time to time—but you won’t have to put water into it. There is, however, another type of air conditioner called a swamp cooler that requires water to operate. If you have a swamp cooler, you may need to fill a reservoir with water and potentially ice. But a swamp cooler is different from a standard portable AC unit.

At a minimum, an HVAC system should be serviced once per year. However, a twice-a-year service schedule—once in the spring for the cooling system and once in the fall for the heating system—is often recommended, especially for older systems, heat pumps, or in climates with extreme temperatures. Regular service, which includes inspection, cleaning, and maintenance, ensures the system runs efficiently, helps prevent costly breakdowns during peak seasons, and can extend the unit's lifespan. You can also schedule a service if you notice issues like poor performance or strange noises.

A calculation method that your HVAC contractor will use to ensure your system does what it's supposed to is measuring duct output, or its CFM. The calculation requires knowing the cross-sectional area of the ductwork and determining the air speed past any given point within it.

There are several tell-tale signs that your AC coils need cleaning, including:

  • You’re getting higher electricity bills.

  • Your home doesn’t feel as cool as it usually does.

  • Your AC unit is running longer than usual to cool your home.

  • Your home is more humid than usual.

  • The coil is covered in frost while running.

The Frederick, MD homeowners’ guide to air conditioning services

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