McCarthy Services

4.49 |217 Verified Ratings
Write a Review

McCarthy Services

4.49 | 217 Verified Ratings
Write a Review


8198 Terminal Rd, Ste 100
Lorton, VA 22079
Your use of our services is governed by our Terms & Conditions
Tell us your zip code to view pricing & schedule
Tell us your location to view pricing & schedule
Choose your project to view pricing & schedule

Please enter valid zip.

Please choose a location.

We're sorry but the time you have chosen is no longer available.
Please select a new time below:
Please call 703-334-0180 to schedule your appointment with .
There was an issue connecting to the server. Please try again or call Customer Service at 1-877-800-3177.
We're sorry but the time you have chosen is no longer available.
Please select a new time below:

Select your appointment type and time:

McCarthy Services

Making it work, making it right.

McCarthy Services is a trusted name provides heating, air conditioning, indoor air quality, and efficient attic systems. Our courteous HVAC technicians are available 24/7 to provide you with expert service and repair. Our Comfort Advisors are ready to help you make the most effective installation or replacement decisions based on your home comfort needs. We are licensed and insured Estimates provided before work begins Major credit cards accepted 100% financing with approved credit Residential and Commercial

Service Area

  • Alexandria
  • Arlington
  • Fairfax
  • Silver Spring
  • Fredericksburg
  • Herndon
  • Bethesda
  • Rockville
  • Vienna
  • Hyattsville
  • Springfield
  • Falls Church
  • Manassas
  • Gaithersburg
  • McLean
  • Sterling
  • Takoma Park
  • Reston
  • Bowie
  • Dulles
  • Woodbridge
  • Centreville
  • Ashburn
  • Chantilly
  • Leesburg
  • Gainesville
  • Capitol Heights
  • Laurel
  • Frederick
  • Spotsylvania
  • Lanham
  • Dumfries
  • Stafford
  • Round Hill
  • Purcellville
  • Haymarket
  • Lorton
  • Potomac
  • Germantown
  • Upper Marlboro
  • Quantico
  • Warrenton
  • Greenbelt
  • Lovettsville
  • Catharpin
  • Waterford
  • Ashton
  • Clarksburg
  • Riverdale
  • Hamilton
  • Bealeton
  • Chevy Chase
  • Nokesville
  • Dunn Loring
  • Fort Myer
  • Fairfax Station
  • Temple Hills
  • Andrews AFB
  • Brandywine
  • Midland
  • Mount Rainier
  • Newington
  • Great Falls
  • Merrifield
  • Bristow
  • Bladensburg
  • Suitland
  • Brentwood
  • Beltsville
  • Clinton
  • Cheltenham
  • Broad Run
  • Oakton
  • Triangle
  • Waldorf
  • Oxon Hill
  • Barnesville
  • Spencerville
  • Occoquan
  • Fort Belvoir
  • Glenn Dale
  • College Park
  • Damascus
  • Clifton
  • Fort Washington
  • Annapolis
  • Burke
  • Kensington
  • Aldie
  • Paeonian Springs
  • Annandale
  • Beallsville
  • Olney
  • Accokeek
  • District Heights
  • See All >

Services Offered

Air Conditioning
  • Central A/C Install
  • Ductless Mini-split A/C Install
Heating & Furnace Systems
  • Heat Pump Install
  • Electric Furnace - Install

Areas of Expertise

  • General service, ac repair, and new installations or replacements
  • Home air conditioning maintenance and tune-ups
  • Indoor air quality accessories
  • Furnace or Heat Pump Installation, repair, or emergency service
  • Water Heaters, Drain Cleaning, Leaky Faucets, Pipe Repairs

Quick Facts

Business Hours
(Please call to confirm)
  • Free Estimates
  • Trip Charge
  • Credit Cards Accepted
  • Bilingual


In Business Since: 2000
Memberships & Affiliations
  • BBB - Better Business Bureau
Corporate Account. View Details

HomeAdvisor allows Service Professionals to post information about themselves and their business on their profile. HomeAdvisor does not review or verify the information or representations set forth in those profiles, as they are self-reported by the Service Professional.

HomeAdvisor verifies state-level licensing where applicable - note: some states require local or county level licensing and you should verify whether or not your pro is properly licensed.

To find more licensing information for your state, visit our Licensing Requirements page.

Business Overview

Community Involvement

Tim Tebow Foundation ™


Corporate Account

This Pro is a corporate account and has not been screened by HomeAdvisor.

Learn More

Ratings & Reviews
McCarthy Services

Real feedback from real homeowners.
Learn more about this pro by reading the ratings and reviews below.
Write a Review
Showing 1-10 of 217
  Page 1 of 22
Sort by newest   Date ▼   Rating  
5.0   |  
Review by in Gaithersburg, MD
Project: Install Natural Gas or Propane Furnace / Forced Air Heating System
The entire process from sales consult and estimate with Orlando to completion of the work was seamless. The technicians, John and Young , arrived as scheduled. They were efficient in completing the installation of the new HVAC system; properly prepped and cleaned up the work area; reviewed the completed work with me; and patiently answered all my questions. As a homeowner for over 4 decades, I have had to do business with many companies. I highly recommend this one.
Was this review helpful?  
5.0   |  
Review by in Temple Hills, MD
Project: Install Natural Gas or Propane Furnace / Forced Air Heating System
Was this review helpful?  
4.0   |  
Review by in Alexandria, VA
Project: Install Natural Gas or Propane Furnace / Forced Air Heating System
great job
Was this review helpful?  
5.0   |  
Review by in Bowie, MD
very great service
Was this review helpful?  
5.0   |  
Was this review helpful?  
5.0   |  
Review by in Clifton, VA
Project: Install Natural Gas or Propane Furnace / Forced Air Heating System
McCarthy Services showed up on time, had masks and booties on when entering the house and were very courteous. New Air Conditioning System and Furnace installed. Would highly recommend McCarthy Services.
Was this review helpful?  
5.0   |  
Fabulous from beginning to end! Came out immediately when we had an issue and fixed it . No issues since!
Was this review helpful?  
1.0   |  
On Nov. 1 2019, McCarthy Services installed a new HVAC System on my place to replace an old one (which they said would not last the winter while servicing the old one). Roughly a year and half later (Tues., June 29 2021) the AC was not cooling at all. I had called another company I have an ongoing subscription with for maintenance and diagnostics. They notified me the reversing valve was defective and was leaking the refrigerant. At this point, I called McCarthy Services to activate the 2-year labor and 10-year parts warranties. They scheduled me for that Thursday (July 1, 2021 between 10am - 2pm). On July 1, 2021, the tech was running late (past 2pm), I started calling almost every hour to get an update to their ETA. It was 6:45pm and I received a call from the tech asking what the issue was, when I mentioned that the tech from that other company said it was the reversing valve, the tech from McCarthy proceeded to tell me he did not have any experience working on that and that I should call the office in the morning to get another tech to come over. I did not wait until morning, I called the office immediately. The office mentioned they would get someone over to us between 8am to noon. The tech came over around 2pm. To let us know what we already knew, it was the reversing valve that was bad, and that it had to be ordered. Since I did not receive a call to get an ETA for the part, I proceeded to call McCarthy Services, they responded that the part would arrive between July 7 or 8 (2021). On July 7th, they called to let me know the part would be there on July 8th and they scheduled an appointment for July 8th between 10am - 2pm. It was 2pm and they had not arrived, I proceeded to call to which they responded the tech are running extremely behind and that they would arrive around 4pm. At 4pm, I call to ask, to which they further delayed my service for 5pm. At 5pm, it was again pushed an extra hour. Around 6pm, they (Irene) called to tell me that since the work was rather intensive and would require several hours, it would have to be rescheduled for Today (July 9, 2021), for 8 am and (after Irene talked to management) she gave me their word that I would be the first service in the queue. At 7:30am, I receive a call from the tech asking ME, what was needed, as I explained that it was the part that needed to be replaced, he responded that he would pick it up and head over to us. At 8:30am I called to ask for a status, I am originally told that the tech was doing another work and that he would come over right after. I told her (Tracy) that that was not acceptable that I was given their word that I would be the first in the queue since they could not make it the day it was scheduled for. After being placed on hold, she mentions that the tech that was originally assigned to me, could not perform the work, and that I was **in fact** the first one in the queue for another tech but that he started around 9am, but that he had the part that was needed to perform the job. I called around 10am to, yet again, get another status. This time they tell me that the tech is going to grab the part, but that he should be here within 30-45 mins. At this point, it is 10:45am, and I m continuously wondering if the job will ever get done. So while they continue to provide excuses while working from the comfort of their office with AC, I will be stuck sweating while I work from home without AC. The whole reason I agreed to switch the old unit (at their suggestion) was because they mentioned it would breakdown at any moment and leave me for days without heat/AC. It seems like if it is for warranty purposes they will drag their feet as much as possible as if they wanted to deter people from ever asking to activate the warranty. At that point what is their warranty worth.
Was this review helpful?  
5.0   |  
Very responsive, easy to work with, professional.
Was this review helpful?  
0.5   |  06-15-2021
McCarthy had installed by AC system 9 years ago and I had been an ongoing customer. My AC stopped working this June and I called McCarthy and they sent out a tech promptly. The tech identified two failed controller boards and a failed motor for a total repair cost of $3400. I paid $99 for the service visit. They recommended replacing the system and sent out a sales rep to inspect the failed items and give me a quote for a new system. The cost was $10,800. Concerned about the accuracy, I called a second company to look at my system. The next morning a rep came out and in 5 minutes identified that the condensate pump was not plugged in. He plugged it in and the system began to work. No failed controller boards or failed motor. They did not charge me for this service call. My opinion is that McCarthy is either incompetent or dishonest. I gave them half a star because they were polite and cordial.
Was this review helpful?  
Showing 1-10 of 217
  Page 1 of 22

Seal of Approval

What is the screening process that Service Professionals go through in order to become members of the HomeAdvisor network?

  1. Verify Trade License
    HomeAdvisor checks to see if the business carries the appropriate state-level license.
  2. Verify Insurance
    As a part of our screening process, we encourage professionals to carry general liability insurance. We require coverage for hundreds of services.
  3. Verification of State Business Filings
    For business types that require a Secretary of State filing, we confirm that the business is in good standing in the state in which it is located.
  4. Criminal Records Search
    HomeAdvisor uses 3rd party data sources to conduct a criminal search for any relevant criminal activity associated with the owner/principal of the business.
  5. Sex Offender Search
    We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
  6. Bankruptcy Search
    We use 3rd party data sources to check the history of the principal/owner of the business for bankruptcy filings by or against them.
  7. Legal Search for Civil Judgments
    We use 3rd party data sources to check the principal/owner of the business for state level civil legal judgments entered against them.
  8. Liens Search
    We use 3rd party data sources to check the principal/owner of the business for liens placed against them.
  9. Identity Verification (SSN)
    HomeAdvisor verifies the social security number(s) of the owner/principal for identity check purposes. This check applies primarily to smaller business entities.
  10. Identity Verification (Reverse Phone Lookup)
    We conduct a reverse business phone lookup to identify records matching the phone number information provided by the business.

NOTE: Member service professional information confirmed as described above may change or expire over time; while HomeAdvisor attempts to maintain accurate and up-to-date information, and confirms changes when notified, we cannot guarantee that profile and screening information is accurate. Therefore, we recommend that before working with a service professional you verify that information presented is still current and/or acceptable to you.
Please see HomeAdvisor's Terms and Conditions for a full description of how we screen Service Professionals

**Only for U.S. service professionals

Final Step - Confirm Your Appointment:

Confirm your appointment with on , - Change


By clicking Confirm Appointment, you affirm you have read and agree to the HomeAdvisor Terms & Conditions, and you agree and authorize HomeAdvisor and its affiliates, and their networks of Service Professionals, to deliver marketing calls or texts using automated technology to the number you provided above regarding your project and other home services offers. Consent is not a condition of purchase.