Markool Heating & Cooling logo
View Specials
Book Online
Call Us (301) 732-4244
CONSIDERING A NEW HVAC SYSTEM? Click Here to Get an Online Quote!
Markool Heating & Cooling logo
(301) 732-4244
View Specials
Book Online
  • Cooling
    • AC Installation
    • AC Repair
    • AC Maintenance
  • Heating
    • Heating Installation
    • Heating Repair
    • Heating Maintenance
  • Plumbing
    • Water Heaters
    • Sewer Repair
    • Drain Cleaning
    • Pipe Repair and Repiping Services
  • Services
    • Commercial HVAC
    • Air Duct Cleaning
    • Financing
    • Maintenance Plan
  • Specials
    • Monthly Promotions
  • About
    • Service Area
    • Reviews
    • Blog
    • Meet the Team
  • Contact
    • Careers
  • Shop

Service Area

Adamstown
Barnesville
Beallsville
Boonsboro
Boyds
Braddock Heights
Brownsville
Brunswick
Buckeystown
Burkittsville
Clarksburg
Damascus
Dickerson
Frederick
Germantown
Hagerstown
Ijamsville
Jefferson
Keedysville
Knoxville
Leesburg
Libertytown
Lovettsville
Middletown
Monrovia
Mt. Airy
Myersville
New Market
Point Of Rocks
Rohrersville
Thurmont
Tuscarora
Walkersville
Waterford

Contact Us

    By submitting, you agree to receive text messages at the number provided. Message/data rates may apply.

    Markool Heating & Cooling logo
    NATE logo 2023 Carrier President's Award logo Daikin logo ACCA Gold Member logo Goodman A/C logo
    (301) 732-4244
    5304C Kings ct
    Frederick, MD 21703
    Stay connected with us!
    Heating
    Cooling
    Plumbing
    Specials

    ©2025 Markool Heating & Cooling. All Rights Reserved. License: #R 22468 and #104301. Privacy Policy.