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TRUSTED BY SAINT LEONARD, MD HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon122
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Saint Leonard, MD

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

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

Last update on June 11, 2026

Find Heating and air conditioning pros in Saint Leonard

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 Saint Leonard, MD and surrounding areas

Approved (Corporate)

In business since 2000

Free estimates

Credit card accepted

"I had a great experience with McCarthy. They entertained the other offers I had for HVAC replacement, agreed to what felt like a very fair price and did a great job the next day doing the replacement. I'd highly recommend them to anyone for HVAC work."
Installing a new A/C system.
197 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for McCrea Heating & Air Conditioning Services of MD
McCrea Heating & Air Conditioning Services of MD
4.5(
318
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+22 more

Serving Saint Leonard, MD and surrounding areas

Approved

In business since 1936

Free estimates

Emergency services offered

"The technician was punctual, knowledgeable of a myriad of products and services related to my home HVAC system. He was cordial and answered all my questions accurately. Where needed, he provided guidance and advise. He's work was done in a timely manner and without any mess. The workmanship was excellent and everything works properly since installed."
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7 neighbors recently requested a quote
Recommended by87%of homeowners
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Avatar for The Best Air Quality and Restoration
The Best Air Quality and Restoration
4.8(
236
)
Air Ducts & Vents - Clean

Serving Saint Leonard, MD and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Great! He provided additional information, suggesting I install a UV Light Air Purifier to my HVAC system. Which would help eliminate the possibility of mold growing in my vents."
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+50

Response time10 hrs
Recommended by93%of homeowners
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Avatar for ARS of Maryland
ARS of Maryland
4.1(
177
)
Central A/C - Service or RepairCentral A/C - InstallHeat Pump - Install or Replace+6 more

Serving Saint Leonard, MD and surrounding areas

Approved (Corporate)

In business since 1945

Free estimates

Emergency services offered

"This was a maintenance visit for the warm season on my recently installed new HVAC unit."
New System Installation
403 neighbors recently requested a quote
Recommended by73%of homeowners
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Avatar for Petro Home Services
Petro Home Services
4.3(
103
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallOil Furnace / Forced Air Heating System - Install+47 more

Serving Saint Leonard, MD and surrounding areas

Approved (Corporate)

In business since 1903

Emergency services offered

Warranties offered

"I AM BUYING A HEATER SERVICE CONTRACT FROM PETRO THIS YEAR."
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Response time6 days
Response rate100%
17 neighbors recently requested a quote
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Avatar for Blue Dot
Blue Dot
4.1(
352
)
Central A/C - Service or RepairCentral A/C - InstallGas Furnace / Forced Air Heating System - Install+6 more

Serving Saint Leonard, MD and surrounding areas

Approved (Corporate)

In business since 1982

Free estimates

Emergency services offered

"Anthony Flint HVAC technician was very professional, found the probably and fixed it in timely fashion Excellent service!"
System Installation
581 neighbors recently requested a quote
Recommended by70%of homeowners
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Avatar for Mack's Home Services, LLC
Mack's Home Services, LLC
4.7(
603
)
Air Ducts & Vents - Clean

Serving Saint Leonard, MD and surrounding areas

Approved

In business since 1993

Free estimates

Emergency services offered

"My experience with Mack’s Home Services, LLC was excellent. The people are very professional and did a tremendous job. They were courteous, explained their services and pricing clearly, and things went exactly as they communicated. They were very respectful and operated very carefully throughout our home. I will use them whenever I need our HVAC systems cleaned in the future and strongly recommend them. You will not be disappointed."
Response time3 hrs
1 neighbors recently requested a quote
Recommended by99%of homeowners
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Avatar for HPC Services
HPC Services
5.0(
13
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Saint Leonard, MD and surrounding areas

Approved

In business since 2024

Emergency services offered

Warranties offered

"I would highly recommend HPC Services! They responded quickly when we called for an estimate on a new heat pump. The gentlemen who were in our home installing the unit were professional and polite and very nice to our little dogs. Sergio stayed and answered all of our questions until late in the evening. They offered us a free duct cleaning and that was completed on Monday after the Friday install. Emmett worked quickly and professionally. He was so very nice and easy to talk to. I was most impressed with the fact that they offer a Veterans discount. If are looking for an amazing company for any HVAC work, I urge you to give them a call!! Karen Hamner"
HVAC
Plumbing
HPC Services HVAC and Plu
HPC Services HVAC and Plu
HPC Services HVAC and Plu

+5

Response time5 hrs
Recommended by91%of homeowners
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Hunt Plumbing, Heating and Air Conditioning, LLC
4.6(
791
)
Thermostat - Install or ReplaceThermostat - Repair or ReprogramHeat Pump - Repair or Service

Serving Saint Leonard, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"It was just an HVAC inspection, but it was a very professional and the technician was very knowledgeable and friendly. This company is awesome."
Air Handler replacement
Before AHU replacement
Response time7 hrs
18 neighbors recently requested a quote
Recommended by97%of homeowners
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Heating and Air Conditioning questions, answered by experts

High humidity, bad insulation, warmth from sunlight, and poor circulation are all reasons your home’s hotter inside than out. While this is what you want in the colder months, summer can become unbearable if this is a constant. Try to find the cause, but you need to remember that issues like this require a permanent fix (unless you want to bear down during the summer months).

To diagnose a bad HVAC or AC damper, assess the airflow from your vents. For a manual damper, close it, run your system, and check for airflow. If air is still coming through the vents, the damper is likely faulty and needs repair or replacement. For an automatic damper, turn on your HVAC system and monitor the airflow and room temperature. Signs of a problem include low airflow, a room that won't maintain its set temperature, or a drafty feeling. If you suspect a faulty automatic damper, you may need to hire a professional for repairs.

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.

If both your furnace and AC unit are more than a decade old, it may be a good idea to replace both of them. However, your furnace can last up to three decades, and your air conditioner can typically last up to 15 years, so consulting with a pro before deciding to replace both of them is best. If it’s before that time limit for each, you can fix many problems with repairs or just replace one.

As mentioned above, not all HVAC Schrader valves are necessarily the same. While the valve core and pin or spring size on Schrader valves used for HVAC are generally similar, the valves are not all universal and interchangeable. The size of Schrader valves varies depending on whether it's used in an air conditioner, bicycle tire, or motor vehicle tire.

The Saint Leonard, 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.

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