If you hire this pro, you’re covered by a money-back guarantee. Learn more
If you hire this pro, you’re covered by a money-back guarantee. Learn more
About
At Markool Heating Cooling Plumbing, we've been providing top-notch Heating, Cooling, and Plumbing services for over six years. Our team of skilled professionals is dedicated to delivering reliable, efficient, and high-quality solutions tailored to your needs. Whether you're looking for a new installation, routine maintenance, or emergency repairs, we have the expertise and commitment to ensure your home or business stays comfortable and functional year-round. We pride ourselves on our customer service, and your satisfaction is our priority. Trust us for all your HVAC and plumbing needs!
Overview
Hired 25 times
Serves Frederick, MD
Background checked
License verified
12 employees
10 years in business
Business hours
SunClosedMon7:00 am - 5:00 pm
Payment methods
This pro accepts payments via Cash, Check, and Credit card.
Customers rated this pro highly for punctuality, responsiveness, and professionalism.
Excellent 4.9
48 reviews
5
96%
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2%
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2%
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Your trust means everything to us. Learn about our review guidelines.
Read reviews that mention:
Lauren F.
3 weeks ago
•
Hired on Thumbtack
Mike was awesome helping with our broken toilet situation! He was really nice and discussed multiple options with us. Thanks again!
Details: Replace an existing toilet • 2 toilets
Toilet Installation or Replacement
Joseph R.
Apr 13, 2026
•
Hired on Thumbtack
Quick to respond and fast to get me on their schedule. Installed a new water heater the same day as the estimate. Great work!
Details: Yes, the location has an existing heater • Electric tank • I would like to discuss with the professional • House
Water Heater Installation or Replacement
Jessica M.
Jan 19, 2026
•
Hired on Thumbtack
Help came almost instantly (within an hour of the request)! Our toilet was leaking due to a crack. The professional had everything needed to stop the leak in their truck on the first visit (shut off valve was broken). We needed a new toilet and we wanted to pick it out, which we did that evening. The same professional came back the next morning to install the toilet.
Details: 1 toilet • Well water • House
Toilet Repair
Roberto E.
Aug 21, 2025
•
Hired on Thumbtack
I have to say, I am thoroughly impressed and satisfied with my entire experience working with Markool HVAC, and will be recommending them to everyone I know.
My project was to replace a 30+ year old Magic-Pak heat pump system in my condo that was failing to keep temp in this heat wave with a brand new unit. Trevor, the technician who performed my estimate and measurements, was able to inform me that not only was my old unit very old, but the return air was not adequately connected to the grille in my house on the initial install, which made the unit even less effective. The staff at each stage of the project was kind and professional, and the technicians arrived and got the new unit installed and return air properly connected very quickly. Very happy with everything so far, and look forward to working with them again in the future.
Details: Install new heating system • Remove old heating system • Heat Pump • Electricity • Closet • 1,000 - 2,000 sq ft • Single-level building • Condo/Apartment
Markool Heating Cooling Plumbing's reply
Thank you so much for your kind words and for taking the time to share your experience! We’re thrilled to hear that you’re satisfied with the entire process—from the initial estimate with Trevor to the installation of your new system. It's always our goal to not only solve the immediate issue but to ensure everything is installed properly and efficiently for long-term comfort. We truly appreciate your recommendation and look forward to working with you again in the future. Don’t hesitate to reach out if you ever need anything!
—The Markool HVAC Team
Heating System Installation or Replacement
Daisy T.
1 month ago
•
Hired on Thumbtack
very professional and detailed. quote was fair, job done fast
Details: No new piping needed • Other plumbing installation or replacement • Commercial
Plumbing Pipe Installation or Replacement
FAQs
What should the customer know about your pricing (e.g., discounts, fees)?
Markool's Flat Rate pricing offers a consistent, all-inclusive price for services or products, regardless of the specifics of the project (e.g., time, materials).
The flat rate typically covers all the basic aspects of the service or product without any additional charges for standard services.
Special Requests: If a customer requires services or features outside of what is covered by the flat rate, additional fees may apply. These will be clearly communicated beforehand.
What is your typical process for working with a new customer?
Markool's typical process for working with a new customer involves an initial consultation to understand needs, followed by a proposal outlining services and pricing. Upon agreement, the project is executed with regular updates, and final delivery is made. Post-delivery support is also provided to ensure satisfaction.
What education and/or training do you have that relates to your work?
"Our team is composed of highly trained professionals with specialized education and certifications in Plumbing, HVAC, and Gas Fitting. They have completed formal apprenticeships, obtained relevant trade licenses, and regularly attend continuing education courses to stay up-to-date with the latest industry standards and safety regulations."
