Brand Certified
Markool Heating Cooling Plumbing
4.9(581 reviews)
Certified by Markool Heating Cooling Plumbing • Aug 16, 2026
Business Details
5304C Kings Ct, Frederick, MD
21703, United States
Certified by Markool Heating Cooling Plumbing • Aug 16, 2026
(301) 732-4244
Certified by Markool Heating Cooling Plumbing • Aug 16, 2026
http://www.markoolhvac.com/
Certified by Markool Heating Cooling Plumbing • Aug 16, 2026
About
Certified by Markool Heating Cooling Plumbing • Aug 16, 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 • Aug 16, 2026
Hours
Certified by Markool Heating Cooling Plumbing • Aug 16, 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
581 reviews
5 stars
550
4 stars
15
3 stars4
2 stars4
1 star8
- JVJustus VorwerkJul 31, 20265.0Markool fixed my drain/insinkurator issue the same day we reached out. Michael the technician was awesome.
- KRKarla RobesonJul 23, 20265.0Our ancient system had to be replaced today..and everything, from breaking the news to the final check was done with complete professionalism and respect for our home. Cannot say enough good stuff about this team! Katie has been our office contact- sweet, knowledgeable, very focused on kindness and good service. Mike, the field supervisor and his team were an absolute delight to have in our home. Hardworking, down to earth, understanding about my obnoxious big dogs, and so, so, thorough! It got late, and they remained at the steady pace of perfection in work. Some teams would have rushed at the end, eager to be done. This group worked steadily and made sure absolutely everything was perfect. We really appreciate these guys!! So grateful that my daughter recommended such a good business to work with !
- BSBrenda ScruggsJul 18, 20265.0Excellent local Heating and Air Service Company that has reasonable prices.
- MDMichael DavisJul 13, 20265.0I received three comparable quotes on an attic HVAC system. MarKool was the most informative and responsive however, the attitude of the team sold me. These people know what they are doing and waste no time completing the work. They will not disappoint.
- ATAngela ThorntonJul 7, 20265.0I recently had my water heater serviced by Markool Heating & Cooling, and I couldn't be happier with the experience. Michael Hannan was my technician, and he did an outstanding job. He arrived right on time, was professional, friendly, and took the time to explain everything clearly. He completed the service efficiently and made sure everything was working properly before he left. It's refreshing to work with a company that values great customer service and employs technicians like Michael who truly care about doing quality work. I highly recommend Markool Heating & Cooling, and if you have the opportunity to work with Michael Hannan, you'll be in excellent hands!
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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Certified August 16, 2026Yext Knowledge Graph
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