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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon1.5k+
    Verified heating and air conditioning services reviews

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

Avatar for Magna Tech Temp Air, LLC
Magna Tech Temp Air, LLC
4.8(
167
)
Central A/C - Service or RepairHeat Pump - Repair or ServiceThermostat - Repair or Reprogram+4 more

Serving Darnestown, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"So happy I worked with Magna for my issue! They came within 45 minutes of me posting on Angie's List... that has to be some kind of record. They diagnosed the issue quickly, clearly communicated what was needed and what the cost would be, and I moved forward with it. My AC was back up and running within an hour. Highly recommend! I've saved Magna Tech's phone number in my contacts and they will be the first company I call every time I have an HVAC issue."
New !6 Seer 3 Ton Air condition
B-Vent
New 80% Gas Furnace Instal
Ashburn Upgrade
Ashburn upgrade

+4

Response time3 hrs
11 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for HVAC Superior Solutions Inc
HVAC Superior Solutions Inc
5.0(
6
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+47 more

Serving Darnestown, MD and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"I HIGHLY RECOMMEND HVAC Superior Solutions Inc!! They came over to diagnose my AC problem on very short notice. I decided to get a whole new system and they took great care in all the details and worked overtime to get the job completed. I am very satisfied with the new system and with the great customer service."
7 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Hecomo
Hecomo
5.0(
11
)
Central A/C - InstallGas Furnace / Forced Air Heating System - RepairHeat Pump - Install or Replace+9 more

Serving Darnestown, MD and surrounding areas

Approved

Credit card accepted

Customers say: True professional

"Excellent service from Hecomo. Technician did not try to push purchase of a new HVAC system even though there were major issues with our system, feel comfortable while talking with an advisor. Very knowledgeable, patiently, friendly and nice person, answer all my questions. Later on, we decided to replace the whole new system with fair price and wasn’t ripped off as others. Very professional and well trained technician. I will definitely use them again."
Heating & A/C Project
Heating & A/C Project
Additional Photos
Additional Photos
Additional Photos

+8

Response time8 hrs
Response rate100%
11 neighbors recently requested a quote
Avatar for McCarthy Services
McCarthy Services
4.2(
370
)
Central A/C - Service or RepairCentral A/C - InstallHeat Pump - Install or Replace+6 more

Serving Darnestown, MD and surrounding areas

Approved (Corporate)

In business since 2000

Free estimates

Credit card accepted

"Cozy Heating And Cooling is a local HVAC service contractor located right here in Woodbridge, VA. Since 2018, Cozy Heating And Cooling has provided dependable service and quality repair work in metro areas of DC, MD and VA. We specialize in satisfying all heating and air conditioning needs to ensure maximum comfort with the highest performance standards from employee training to customer care. All of our technicians are fully certified and trained to install and repair the latest HVAC equipment and technology."
Installing a new A/C system.
127 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Buric Heating and Air Conditioning
Buric Heating and Air Conditioning
4.7(
20
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+24 more

Serving Darnestown, MD and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"The Buric team did a great job of installing two new HVAC systems in our house at a reasonable price.  This is a family run business, the owners of which take pride in their work and pay attention to detai. The Buric team was also able to add zoning our systems, where other contractors had said this would not be possible.  The work was completed in a timely fashion, and the team cleaned up nicely after itself.  We had two babies in the house, and the team took care not to disrupt their sleep schedules."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+7

Response time8 hrs
12 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for GAC Services
GAC Services
4.7(
295
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split Heating System - Install or Replace+6 more

Serving Darnestown, MD and surrounding areas

Approved (Corporate)

In business since 1970

Free estimates

Warranties offered

"I am SO pleased with this experience with GAC and highly recommend them! OUTSTANDING information and research on our behalf by Kelly for estimate options and finding the best unit and price for our needs. Chris was very impressive when he came to our home for preparation of the HVAC air handler/heat pump installment. Top notch work by John and the GAC crew on the actual work putting in my unit. They gave us the option and were qualified to run/install a new wire for our electric needs to have all energy savings of the equipment. Easy scheduling with Monica and follow-up too. ALL the GAC staff were happy to answer our various questions in full detail so we understood everything in this project and could make informed decisions. GAC found a high quality unit (Bryant) that suited our needs AND qualified for a PEPCO rebate, which they quickly filed on our behalf. We have been customers for years with GAC for maintenance and with this install, plan to be for years to come."
Additional Photos
6 neighbors recently requested a quote
Recommended by93%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

The cost to install a ductless mini-split AC system ranges from $2,000 to $14,000, depending on the type of unit, the number of zones or rooms, and the complexity of the installation. On the low end, a system for one or two zones in a single room costs around $2,000. Covering two zones for more rooms can cost between $6,000 and $8,000. For a larger multi-zone system to cover an entire home, costs can be $14,000. If you don’t already have an AC system in place, you may need to add the cost of permits, an electrician, and a concrete pad.

While your AC unit may still run even if its capacitor is going bad, doing so takes a lot more energy, so it can drive up your electric bill and cause further damage to your AC unit’s parts. If you suspect a bad capacitor, it’s important to have a professional diagnose and fix the problem before you continue to run your AC.

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.

Air conditioners and dehumidifiers are actually quite similar, though they perform different jobs. Dehumidifiers reduce moisture in the air, while air conditioners work to cool the home. A good central AC unit will naturally perform a certain level of dehumidification due to its design, but it will not be able to handle excessive levels of moisture.

Yes, it's normal for air conditioners to leak tiny amounts of water due to condensation. Under normal circumstances, all excess moisture travels to the drain pan to be pumped through your system's drain line. You should call a technician to diagnose the issue if you're noticing frequent leaking or pooling. It's also important to investigate if your homeowners insurance can cover water damage.

The Darnestown, 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.