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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.
220 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
429 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 - InstallElectric 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(
351
)
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
530 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
)
Heat Pump - Repair or ServiceThermostat - Install or ReplaceThermostat - Repair or Reprogram

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
19 neighbors recently requested a quote
Recommended by97%of homeowners
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Heating and Air Conditioning questions, answered by experts

Deciding whether to replace just the AC coil or the entire system depends on the age of your unit and the overall cost. Replacing a coil is less expensive than a full system replacement, but it can still be a pricey repair. If your HVAC system is relatively new and still under warranty, or if the replacement cost is significantly lower than a new system, replacing the coil can be a worthwhile investment that restores efficiency and extends the unit's life. However, for older systems (nearing the end of their 10-15 year lifespan) or those with extensive damage, it is often more cost-effective to replace the entire AC unit. Mismatched coils in an older system can lead to inefficiency and future breakdowns, so a full replacement ensures optimal performance and avoids further costly repairs.

A dirty AC filter can lower the efficiency of your system, so depending on how dirty it was, you may notice a temperature difference when you clean your filter. You can try other solutions if your AC isn’t blowing as cold as it used to. You can call in a local HVAC tech to make sure everything is running correctly, fix your air seal if it’s a window unit, and clean your coils.

Your heating and cooling systems cost you the most on your electric bill and make up 50% of your bill on average. Your washing machine, dryer, oven, and stove contribute significantly to your electric bill as well. Lights, fans, and smaller electronics add up, but aren’t the biggest energy consumers. You can reduce your power usage by setting optimal temperatures on your thermostat and investing in energy-efficient appliances.

An HVAC system typically lasts between 10 and 30 years, with an average lifespan of 15 to 25 years. The longevity of the system is influenced by factors such as the quality of the unit, usage frequency, local climate, and how well it is maintained. Regular maintenance, including cleaning, filter replacements, and professional inspections, can help maximize its lifespan. Different components within the system have varying life expectancies. For example:

  • Furnaces: 15 to 30 years

  • Boilers: 20 to 35 years

  • Air Conditioners (AC units): 12 to 20 years

  • Heat Pumps: 10 to 20 years

  • Ductless Mini-Splits: 10 to 30 years

To reset your air conditioner, start by turning it off at the thermostat. Then, shut off power to the AC system at the circuit breaker. Some units have a dedicated "reset" button; if yours does, press and hold it for three to five seconds. If your air conditioner doesn't have a reset button, or if you are resetting it after a power outage, leave the circuit breaker off for at least 30 minutes to allow the system to reset itself. Afterward, turn the power back on at the breaker, turn on the AC from the thermostat, and set it to "cool" to test the system.

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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