Brand Certified
Markool Heating Cooling Plumbing
4.9(556 reviews)
Certified by Markool Heating Cooling Plumbing • Apr 05, 2026
Business Details
5304C Kings Ct, Frederick, MD
21703, United States
Certified by Markool Heating Cooling Plumbing • Apr 05, 2026
(301) 732-4244
Certified by Markool Heating Cooling Plumbing • Apr 05, 2026
http://www.markoolhvac.com/
Certified by Markool Heating Cooling Plumbing • Apr 05, 2026
About
Certified by Markool Heating Cooling Plumbing • Apr 05, 2026
HVAC ContractorPlumberAir Duct Cleaning ServiceHeating ContractorSewer & Drain CleaningSewer Cleaning CompanyWater Heater SalesWater Heater ServiceWater Purification EquipmentWater Purifiers
Founded in 2016, Markool Heating & Cooling is the name to trust when it comes to heating and air conditioning in Frederick, MD, and the surrounding areas. From our professional team and great Carrier products to free estimates and competitive pricing, we design our full suite of services to earn your complete satisfaction. We have extensive experience with a wide range of both residential and commercial heating, air conditioning, air quality, and plumbing services. If you're interested in maintaining or improving the comfort and efficiency you enjoy indoors, we're the right team for the job. Contact us today to schedule your next HVAC or Plumbing appointment!
Details
- Requires appointmentAvailable
- Onsite servicesAvailable
- Wheelchair accessible entranceAvailable
- Wheelchair accessible restroomAvailable
Location
Certified by Markool Heating Cooling Plumbing • Apr 05, 2026
Hours
Certified by Markool Heating Cooling Plumbing • Apr 05, 2026
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours
Reviews
4.9
556 reviews
5 stars
526
4 stars
14
3 stars4
2 stars4
1 star8
- MBMarcus Brooks3 days ago5.0The Service was quick and the Repairmen were incredibly knowledgeable. They were happy to answer all my questions and explain what they were doing and why!
- AHAmanda Lauren Hall4 days ago5.0Guys did great!
- JLJoanne LeighApr 3, 20265.0We were very pleased with Markool HVAC. Our technician Mike was courteous, knowledgeable and helpful. The company communicated well and was prompt. Definitely a five star experience
- BMBrenda MusselmanMar 6, 20265.0We highly recommend this company. We came home from a vacation and found our hot water heater leaking water. It was late on a Friday and this company sent Mark right over to look at our problem. Before the end of the day we had a new hot water heater installed and an amazing warranty . This Master plumber was very helpful and explained everything. We are so grateful we chose this company. Not only do they do plumbing they do heating and air conditioning services also. Mark is our hero! Thank you for having such a great staff. The receptionist was friendly and helpful. A++++!!!
- JAJoe AshcraftMar 4, 20265.0Overall very happy with the system. They were flexible with the schedule as I had some delays due to permits. They worked with me and other contractors to ensure everything was set up to my satisfaction. They did the duct work and installed a carrier green speed heatpump with multiple zones. These units can be a little tricky, but they are amazing once everything is configured properly.
Frequently Asked Questions About Markool Heating Cooling Plumbing
What services does Markool Heating Cooling Plumbing offer?
Markool Heating Cooling Plumbing provides residential and commercial heating, air conditioning, air quality, and plumbing services including HVAC and water heater services.
Where is Markool Heating Cooling Plumbing located?
Markool Heating Cooling Plumbing is located at 5304C Kings Ct, Suite C, Frederick, MD 21703, USA.
What are the business hours of Markool Heating Cooling Plumbing?
They are open 24 hours a day, 7 days a week.
How can I contact Markool Heating Cooling Plumbing?
You can call them at +1 301-732-4244 or email team@markoolhvac.com.
Does Markool Heating Cooling Plumbing offer online estimates?
Yes, they offer online estimates for their services.
What payment methods does Markool Heating Cooling Plumbing accept?
They accept American Express, Cash, Check, Discover, Financing, Invoice, MasterCard, and Visa.
Is Markool Heating Cooling Plumbing accessible for people with disabilities?
Yes, they have wheelchair accessible entrances, seating, and restrooms, and are a transgender safe space.
Which postal codes does Markool Heating Cooling Plumbing serve?
They serve the following postal codes: 21702, 21703, 21704, 21701, 21710, 21714, 21716, 21717, 21718, 21719, and 21727.
What nearby places can help customers find Markool Heating Cooling Plumbing?
Nearby places include Roche Landscaping Services, Roche Bros., Inc., and Benchmark Building Enclosure which are close contractors and home improvement providers, helping locate Markool Heating Cooling Plumbing easily in the Frederick area.
Are there recreational or fitness facilities near Markool Heating Cooling Plumbing?
Yes, nearby recreational facilities include Tuscarora Tennis Barn and Tuscarora Tennis Club, as well as GROG CrossFit, where customers can enjoy sports and fitness activities before or after visiting.
What local automotive services are available near Markool Heating Cooling Plumbing?
Nearby automotive-related services include Maryland Performance Center, Karcepts, Rayo's Auto Services, R & R Garage, and car dealers like RKT56 and Total Mobility Services, offering repairs, parts, and sales.
Brand Certified Facts from Markool Heating Cooling Plumbing
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