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TRUSTED BY LA PLATA, MD HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon430
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in La Plata - 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 La Plata, 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.
82 neighbors recently requested a quote
Recommended by91%of homeowners
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 La Plata, 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."
Additional Photos
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Additional Photos
6 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for The Best Air Quality and Restoration
The Best Air Quality and Restoration
4.8(
236
)
Air Ducts & Vents - Clean

Serving La Plata, 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
Avatar for PMD Heating & Cooling LLC
PMD Heating & Cooling LLC
5.0(
15
)
Central A/C - Service or RepairThermostat - Repair or ReprogramDuctless Mini-split Heating System - Install or Replace+6 more

Serving La Plata, MD and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

We take great pride in our reputation of experience, expertise, quality, and customer service to meet our consumers' needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of your project. We take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job from start to finish. We look forward to working on your next project.

Response time3 hrs
Response rate92%
13 neighbors recently requested a quote
Avatar for Mack's Home Services, LLC
Mack's Home Services, LLC
4.7(
603
)
Air Ducts & Vents - Clean

Serving La Plata, MD and surrounding areas

Approved

In business since 1993

Free estimates

Emergency services offered

"Mack is dedicated to what he does and went out of his way to diagnose my problem and link me with HVAC personnel who could address related issues. He cleaned my ducts perfectly and my system is working well now."
Response time3 hrs
1 neighbors recently requested a quote
Recommended by99%of homeowners
Avatar for 3MMECHANICAL
3MMECHANICAL
4.9(
34
)
Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairElectric Furnace / Forced Air Heating System - Repair - For Business+5 more

Serving La Plata, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Emergency services offered

Warranties offered

"I hired 3M after considering several other sources for furnace repair. In reviewing other proposals I found excessive charges. 3M called me and when I told him about my problem he asked if he could come and look at it. He arrived as scheduled, was professional, courteous, and thorough. After checking out the furnace he gave me an estimate that was half of my other bids. He obtained the parts, and in working on rhe system found another problem with a transformer. He obtained the part and after completing the repair said that the new parts had cost more than his estimate, but since he had missed the problem initially, he would not charge me for the extra labor. I immediately realized I was dealing with an honest person ... a rarity these days. 3M is now my permanent source for all my HVAC needs. There is no better source available than 3M."
SERVICE CALLS
SERVICE CALLS
SERVICE CALLS
SERVICE CALLS
SERVICE CALLS

+8

Response time3 hrs
Response rate89%
1 neighbors recently requested a quote
Avatar for HPC Services
HPC Services
5.0(
13
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving La Plata, 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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Heating and Air Conditioning FAQs, answered by experts

A calculation method that your HVAC contractor will use to ensure your system does what it's supposed to is measuring duct output, or its CFM. The calculation requires knowing the cross-sectional area of the ductwork and determining the air speed past any given point within it.

If you’re looking for an energy-efficient heating and cooling system to heat a compact to average-sized home, then a ductless system is absolutely worth considering. The installation is less hassle when compared to a ducted heat pump system, and because your electricity bills should drop, it’s an excellent long-term investment.

Many HVAC companies offer free quotes and free estimates for repairs and new HVAC systems. Others offer low-cost quotes or apply the cost of the estimates or diagnostics to your final bill if you hire them. Be aware that some companies advertise free HVAC quotes and recoup the costs by charging more for their services. Free HVAC quotes are never truly free—they cost the company time and effort—so be a good customer. Also understand that you may end up paying for free quotes in another way if you don’t hire a reputable company.

A dual evaporator coil is a specific design that allows the AC system to cool different compartments at different levels. It’s usually seen in refrigerators and similar appliances, but not in whole-house air conditioning systems. Talk with your AC technician about the best uses for a dual evaporator coil.

The American Society of Heating, Refrigerating, and Air-Conditioning Engineers, or ASHRAE, sets the standard guidelines for air changes per hour in homes and businesses. The International Residential Code, or IRC, also sets ACH requirements for residences and bases those requirements off of ASHRAE standards plus climate specifics related to your location.

The La Plata, 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.