Markool Heating.Cooling.Plumbing

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5 Years In Business

Company Details

  • Verified Licenses


5304 Unit C Kings Court
Frederick, MD 21703


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Service Details

  • Residential Work
  • Commercial Work

Areas of Expertise

  • HVAC
View All Offerings and Cities Served

Cost Information

  • Free Estimates
  • Credit Cards Accepted


16 Verified Reviews
  • 5
  • 4
  • 3
  • 2
  • 1

Highly rated for

  • Quality
  • Value
  • Customer Service
Showing 1-10 of 16 results
0.50 Jim L. Manchester, MD

The old bait and switch was done by them. I was quoted by Chris Markoe one of the owners a complete Carrier system inside and outside my home. They pushed me for install which I took a day off to get done. The crew was great until we did final inspection and the furnace unit installed was a BRYANT. I questioned it and was told it was the same as a Carrier by the crew ITS NOT different bells and whistles and most importantly Shorter WARRANTY. They called Chris who told me it was made by carrier and one quoted was on Backorder. No communication to me just took it upon himself to put an inferior system in and charge me the same amount. So very dissatisfied considering it was a referral from one of their own employees. Been a week and no follow up or ETA of the Carrier unit. I hope this review encourages other to look at there agreement with them and make sure you got what you paid for especially warranty. Poor business practice.

5.0 Colleen B. Jefferson, MD

Just started working with Markool this summer and they have been fantastic! When I need service, they are so fast and every person we have interacted with has been polite, knowledgeable and personable. We unexpectedly needed to replace our system during a heat wave and they were super. So responsive and quick. I would highly recommend Markool for all of your HVAC needs!

5.0 Brian G. Ashburn, VA

Was looking for a company to service/maintenance. Called them and shared my concerns. Scheduled and appointment within 3 days. Technician was polite and professional. Could tell he knew about AC unit and his profession. Fair cost/pricing Highly recommend.

5.0 Philip S. Silver Spring, MD

Turned on the AC this morning to find out was blowing hot air, called up a few different companies who wanted minimum 100 bucks to come out blah blah blah, called up Markool and got connected with a technician. The technician helped me troubleshoot the issue, and have me a quick fix that will last until they make it out tomorrow to do the permanent fix. I'll be using them for all my AC needs in the future!

5.0 Dezmen K. Falling Waters, WV

Chris was very easy to work with throughout the whole transaction hes very understanding and really wants to keep the customer happy! This company got to the job asp for me and my family! Thanks to you guys we no longer have a carbon monoxide leak!!

5.0 Thomas F. New Market, MD

Quick and outstanding service Good job

5.0 Pat S. Jefferson, MD

They were on time. Chris explained everything to me.They were honest, personable, and very knowledgeable. I will be calling them in the fall to do annual maintenance for sure!! I wish all contractors were this nice to work with!

4.0 Leslie K. Hagerstown, MD

5.0 Tom C. Frederick, MD

Very efficent, in and done in 1/2 hour. Very professional and knowledgeable. I highly recommend this small business.

5.0 Sandy D. Frederick, MD

Professional and efficient. Chris did an A/C repair on a part under warranty from another company. He quickly coordinated getting the new part through the warranty and completed the repair quickly. Will recommend to others.


Markool Heating.Cooling.Plumbing

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