Brand Certified
Markool Heating Cooling Plumbing
4.9(560 reviews)
Certified by Markool Heating Cooling Plumbing • May 17, 2026
Business Details
5304C Kings Ct, Frederick, MD
21703, United States
Certified by Markool Heating Cooling Plumbing • May 17, 2026
(301) 732-4244
Certified by Markool Heating Cooling Plumbing • May 17, 2026
http://www.markoolhvac.com/
Certified by Markool Heating Cooling Plumbing • May 17, 2026
About
Certified by Markool Heating Cooling Plumbing • May 17, 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 • May 17, 2026
Hours
Certified by Markool Heating Cooling Plumbing • May 17, 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
560 reviews
5 stars
529
4 stars
15
3 stars4
2 stars4
1 star8
- KLKeith Leonard1 day ago5.0Flushed water heater and fixed valves. Before that, fixed leak and installed faucet. Before that, cleared clogged shower drain. Michael Hannan, the plumbing technician, is great. He works efficiently and politely and has a good sense of humor. The work is done well. He also doesn't try to upsell anything. Trustworthy and good at his job The communication with the company is great. The staff is friendly and professional and responsive. Overall great experience.
- JJjstewart1967May 4, 20265.0very through and professional. excellent back office support and communication
- JJJeffApr 28, 20264.0This company is very attentive, they are quick to respond to your call. give them a call cause my a/c was not cooling and had a call back within the hour if not sooner. was able to get a tech out within a day or two not long of a wait for the work. once they found the problem was able to give me a quote right on the spot. I would recommend this company for your HVAC work.
- MBMarcus BrooksApr 9, 20265.0The 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!
- 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
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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