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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon564
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Highlandtown - Updated Nov 2026

Avatar for Graham Solution LLC
Graham Solution LLC
5.0(
19
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+6 more

Serving Highlandtown, 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 The Best Air Quality and Restoration
The Best Air Quality and Restoration
4.8(
236
)
Air Ducts & Vents - Clean

Serving Highlandtown, MD and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"This was hands down the best most professional service company I have ever used! I highly recommend this service to anyone who is considering air duct cleaning. I had been told that my vents were fine by the service that installed our new heating and air system. But I still noticed a great deal of dust in the house. Plus my husband was coughing all the time. When the team came out to clean I was completely amazed at all the lint and dust they removed from the vents. It was probably a garbage bag full. Can't believe we were breathing that! All I can say is if you have never had this service, please do. They also found some black mold upstairs and treated it. Very affordable too! Thank you to this amazing team of professionals!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+50

Response time10 hrs
1 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for AMERICAN HVAC SOLUTIONS LLC
AMERICAN HVAC SOLUTIONS LLC
5.0(
9
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+15 more

Serving Highlandtown, MD and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"American HVac solutions did amazing job for my A/C repair. We have had an AC issue for 6 months . Now this company fixed the problem fast . they are reliable and fair priced . Mr Yonas is amazing specialist and great experience . I definitely recommend using this company."
New system replacement
New system replacement
New system replacement
New system replacement
21 neighbors recently requested a quote
Avatar for Supreme Service Today
Supreme Service Today
4.4(
475
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairHeat Pump - Repair or Service+4 more

Serving Highlandtown, MD and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Overall the job went well. We needed a new HVAC system which included a new gas furnace and new AC unit. The sales rep was punctual and responsive to questions. The installation team was punctual as well. The B ratings in some categories is due mostly to communication issues to occurred. Apparently some of the things the sales rep agreed to with us were not communicated to the installation team, so when they invited me down to inspect the work three minor items had not been completed. After I brought it up, the installation team offered to do the work in order to ensure I was satisfied, but they also brought up some valid points on why having that work done may not be what I actually wanted. Therefore I was confused. After calling the company main office, the owner owner called me back within 30 minutes to talk through options to ensure I was satisfied with the job. We agreed that two minor items didn't need to be changed, and he offered an upgrade on the third item, at no additional cost to achieve the functionality that was missing from the third minor item. That component was installed the next day. Lastly, the installation team missed some small trash items when they cleaned up the exterior part of the job."
Response time1 day
Response rate100%
47 neighbors recently requested a quote
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Heating and Air Conditioning FAQs, answered by experts

Unfreezing an AC unit is not a DIY project unless the problem is a dirty air filter. Changing out an air filter is easy for homeowners, but otherwise, trying to repair ductwork, refill refrigerant, or replace a blower fan motor are tasks best left to the pros. Otherwise, you could cause further damage to your cooling system or even harm to yourself.

To make the most out of your AC, consider implementing the following best practices: 

  • Choose the right size AC for your home to ensure your unit runs as efficiently as possible.

  • Choose a window with shade, as direct sunlight can cause your AC unit to overheat. 

  • Clean or replace the filter at least every two months. 

  • Inspect the AC’s fan and straighten it if necessary. 

  • Discontinue use immediately if you suspect a malfunction, as running the AC while broken can lead to significant issues. 

  • Turn off (or adjust the temperature) when you leave the house.

If possible, avoid placing furniture in front of a return air vent. A blocked air vent can cause your HVAC system to use more energy, which in turn can lower the life span of your unit and raise your energy bill. Furniture can also trap hot or cold air, damaging your furniture or appliances. 

Professional duct installers suggest leaving between six and 12 inches of space in front of an air return vent. If you must place furniture in front of a return air vent, try to aim for putting furniture over a floor vent instead of in front of a wall vent, and avoid draping curtains over any vent system.

Signs that your air conditioner capacitor is bad or failing include a range of symptoms. The AC unit may not turn on at all, or it might struggle to start before shutting down randomly or in the middle of a cooling cycle. You might hear a humming or banging noise when it attempts to start, or the compressor might hum without the unit actually running. Other indicators include a smell or smoke coming from the unit, the blower circulating room-temperature air instead of cold air, and an unexpected increase in your energy bills.

A blocked return air vent can cause your HVAC system to work much harder and, therefore, less efficiently. The result is higher utility bills and poorer air quality. A blocked return air vent can also cause unpleasant dust, dander, and odors to linger in your home’s air.

The Highlandtown, MD homeowners’ guide to heating and air conditioning services

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