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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

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

Avatar for McCarthy Services
McCarthy Services
4.2(
370
)
Central A/C - InstallCentral A/C - Service or RepairHeat 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.
98 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 - InstallGas Furnace / Forced Air Heating System - Install+22 more

Serving Saint Leonard, MD and surrounding areas

Approved

In business since 1936

Free estimates

Emergency services offered

"I couldn't be happier with the service I received from McCrea Heating and Air Conditioning Services of Maryland. Upon returning from vacation on a 100 degree July day, I found my old HVAC system basically dead (90 degrees in my kitchen!) ... Shane immediately came out to provide an estimate, we signed a contract on the spot, and he kindly provided some freon to hold me over until the new system could be installed. Brian and Nick showed up exactly on time to install the unit, used drop cloths to protect my flooring, and were exceedingly polite and professional throughout. I'd highly recommend this organization."
Additional Photos
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6 neighbors recently requested a quote
Recommended by87%of homeowners
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Avatar for Petro Home Services
Petro Home Services
4.4(
1,600
)
Central A/C - InstallOil Furnace / Forced Air Heating System - InstallGas 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."
Additional Photos
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Additional Photos
Response time6 days
Response rate100%
18 neighbors recently requested a quote
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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

"I hired Best Air Quality and Restoration to clean my dryer vent. I was very pleased with their level of professionalism. All my questions were answered without hesitation. The price was fair and affordable. Dennis, the technician notified me of his expected arrival time. He was very nice and pleasant. Dennis explained what the job entailed and completed the job within an hour. There was no excess lint or debris in my home to clean. I would recommend Best Air Quality and Restoration to others to experience for themselves. I intend to use other Best Air Quality and Restoration services again in the near future."
Additional Photos
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+50

Response time10 hrs
1 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for ARS of Maryland
ARS of Maryland
4.1(
179
)
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
233 neighbors recently requested a quote
Recommended by72%of homeowners
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Avatar for Blue Dot
Blue Dot
4.1(
353
)
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
524 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

"Very Professional and was able to identify the issue with my hvac system to lower my temperature in my house"
Air Handler replacement
Before AHU replacement
Response time7 hrs
21 neighbors recently requested a quote
Recommended by97%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

The average life span of an HVAC system is 15 to 20 years. Even if your old air conditioner is still functional, it isn't as energy-efficient as a newer system (especially one with an Energy Star designation). Older HVAC systems aren't as efficient, and the 10-year mark is when you should start making full system replacement plans. Twenty years in, that plan should be well underway rather than waiting for the unit to die.

It’s normal to hear a low humming sound as air moves through your vents. Most of the time, you probably won’t even notice it. However, if that sound becomes disruptive or if you hear more concerning noises (such as rattling, clicking, banging, hissing, or grinding), there might be a problem with your HVAC system.

Many HVAC manufacturers provide warranties that encompass the cost of a new compressor, with durations ranging from 5 to 10 years, depending on the brand. These warranties cover critical components such as the compressor, condenser, connecting tubing, evaporator, and refrigerant charge. Moreover, they often include the necessary labor for replacement or repairs. Keep in mind that premium-brand compressors may offer lifetime warranty options. It's essential to note that these warranties rarely cover labor costs.

Freon will go in the refrigerant lines near the back of your AC unit. Look for small ports with caps on a thin copper line—the Freon goes into those ports. You are best off hiring a licensed HVAC professional who can complete the job safely and correctly.

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.

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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