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TRUSTED BY DARLINGTON, MD HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon160
    Verified heating and air conditioning services reviews

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

Avatar for Pure Air HVAC, LLC
Pure Air HVAC, LLC
4.8(
73
)
Gas Furnace / Forced Air Heating System - RepairElectric Furnace / Forced Air Heating System - RepairElectric Furnace / Forced Air Heating System - Repair - For Business+4 more

Serving Darlington, MD and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

"Really fast and professional service when our HVAC broke in the peak of summer. Had it up and running in almost no time. My advice to first time homeowners like me in these cases is to always make sure you know what repairs and actions are being done. It'll help in regards to money."
Carrier Infinity 16 SEER Heat Pump
Masters license
Carrier Infinity Series 16 SEER Heat Pump
Carrier 90% Propane Gas Furnace
Carrier Heat Pumps 16 SEER

+8

Response time5 hrs
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for The Best Air Quality and Restoration
The Best Air Quality and Restoration
4.8(
236
)
Air Ducts & Vents - Clean

Serving Darlington, MD and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Timely, efficient, response. Identified a minor mold issue and applied appropriate treatment. Poor quality filters on equipment left a film of fine dust everywhere near a vent. Recommend upgrading vacuum filters to finer screen."
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 At Your Service Heating & Cooling, LLC
At Your Service Heating & Cooling, LLC
4.3(
194
)
Electric Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - RepairGas Boiler or Radiator Heating System - Repair+1 more

Serving Darlington, MD and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Their technician Jason Lord was a true professional. Not only was he proficient and highly skilled at his craft but was a true professional with his customer service skills. It is very rare to have both qualities of mechanical skills and customer service expertise. I would recommend this company to anyone that needs HVAC repair."
Dundalk
Billboard 2
Billboard 3
Billboard 4
Billboard 5

+1

Response time11 hrs
Response rate95%
2 neighbors recently requested a quote
Comfort Air
5.0(
12
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Darlington, MD and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Scott called me back within hours and set up the schedule to fix my sisters broken A/C unit the next morning. The 2 gentlemen that did the repair (I wish I had gotten their names were friendly, professional and helpful in showing my sister had to work the thermostat and hints on cleaning filter and some tubing. Would not hesitate to call again"
Response time11 hrs
Recommended by91%of homeowners
Avatar for Horizon Services, LLC (MDE)
Horizon Services, LLC (MDE)
4.2(
15
)
Central A/C - InstallCentral A/C - Service or RepairHeat Pump - Repair or Service+10 more

Serving Darlington, MD and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"We've had two HVACs and a water heater installed and I would not use them again. They offer an extended warranty that beats their competitors, but their service plans are misleading and after installing one of our A/C units and supposedly doing "maintenance" on it a year later, we learned when we went to replace a filter ourselves that they couldn't have replaced the filter at the last service because the filter cannot be replaced due to the way they installed the unit. We were told on two separate occasions that we had a service plan with them, but when they were scheduled to do our maintenance, they called to say that we didn't have a service plan, it was canceled due to non-payment (it was never communicated that our plan had lapsed during three subsequent calls). Trust the negative reviews and go with another company"
Tech with Condenser
Tech greeting
Tech with Furnace
Tech checking  Condenser in Snow
Horizon Truck in the Fall

+2

6 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Ground Loop Heating & Air Conditioning, Inc.
Ground Loop Heating & Air Conditioning, Inc.
4.8(
8
)
Geothermal Heating or Cooling System - InstallGeothermal Heating or Cooling System - Service

Serving Darlington, MD and surrounding areas

Approved

In business since 1990

Free estimates

Credit card accepted

"Mike Cullum is extremely knowledgeable, very courteous and responsive, with many years specializing in the area of geothermal. Very willing to explain and answer any questions, ensuring customer understanding of what's going on. Worth paying for the experience, quality, and good communication."
Water Furnace Geothermal Unit Installed
Geothermal Unit, Intellizone, & Storage Tank
Water Furnace Loop Pump
Response time2 days
1 neighbors recently requested a quote
Recommended by85%of homeowners
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Showing 1-10 of 340
Heating and Air Conditioning FAQs, answered by experts

Yes, having mismatched evaporator and condenser coils in your AC system can lead to serious issues. For instance, it can result in higher monthly energy costs as the system runs longer to compensate for the mismatch. This mismatch can also put extra stress on the system, compromising its efficiency and longevity. 

Along with that, mismatched coils can lead to higher temperatures and humidity levels in the home. What’s more, using coils of different sizes may violate the manufacturer's warranty, as they are designed to work synergistically, and any mismatch could lead to repairs and system failure.

Evaporator coils in HVAC systems typically last around 10 to 15 years. However, their life span can be longer or shorter based on factors like the frequency of your HVAC system usage, whether regular maintenance is performed, and environmental conditions. Regular maintenance, such as HVAC system cleaning and coil inspection, can extend the durability and efficiency of your evaporator coil.

If your AC runs constantly, it could be due to a number of things, including a faulty thermostat, incorrect temperature settings, or broken equipment. Alternatively, you might have an airflow problem (for example, blocked vents or leaky ductwork). Either way, an HVAC pro can identify the specific problem and fix it for you.

A common HVAC rule is that for every 500 to 600 square feet of living space, you need 1 ton of heating or cooling capacity. Now that you know this common rule, you also need to know that it isn’t very accurate, and a dedicated pro wouldn’t use it for your home. If you talk to a pro who won’t or can’t perform a proper Manual J calculation, consider hiring someone more thorough.

No, you should not run an air conditioner with a Freon leak. If you think your AC unit is leaking refrigerant, shut it off immediately. When you keep using a leaky air conditioner, it could damage the unit and release more refrigerant. After turning off the AC, have an HVAC pro come take a look at the unit.

The Darlington, 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.