How can I get a quote for a new HVAC system?

Customers can request a free online quote by clicking on the "get an online quote" button on the website. Markool's team of experts will then provide a personalized estimate for the customer's specific heating and cooling needs.

What financing options are available?

Markool Heating & Cooling offers financing options to help customers manage the cost of their HVAC system installation or repairs. Customers can inquire about the available financing plans by contacting the company.

What is the service area for Markool Heating & Cooling?

Markool Heating & Cooling proudly serves the Frederick, MD area and the surrounding communities. They are dedicated to providing top-quality HVAC and plumbing services to customers within this local region.

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Markool Heating Cooling Plumbing

Q: What services does Markool Heating & Cooling offer?

Markool Heating & Cooling offers a wide range of services, including heating and air conditioning installation, repair, and maintenance, as well as plumbing, water heater, and indoor air quality services for both residential and commercial customers.

$2.4M revenue • 12 employees • 1 Wormans Mill Ct, Frederick, MD, 21701, United States

Last Updated Jul 21, 2026

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Company Overview

Company Name

Markool Heating Cooling Plumbing

Address

1 Wormans Mill Ct, Frederick, MD, 21701, United States

Website

markoolhvac.com

Phone

(301) 732-4244

Approx. Annual Revenue

$2.4M

Employees

Established

2018

Google Reviews

4.9 (595 reviews)

Google Business Category

HVAC contractor

About Markool Heating Cooling Plumbing

Markool Heating & Cooling is a leading heating and air conditioning company based in Frederick, MD. Established in 2016, the company has over 20 years of industry experience and offers a wide range of residential and commercial services, including HVAC installation, repair, and maintenance, as well as plumbing and air duct cleaning. Markool Heating & Cooling is known for its professional team, top-rated Carrier products, and commitment to customer satisfaction.

Business Profile

Read from the Markool Heating Cooling Plumbing website on Oct 12, 2026. Hover an item to see the exact wording it came from.

How Markool Heating Cooling Plumbing works

Licenses, certifications & awards

NATE CertifiedAssociation member
Carrier Factory Authorized DealerManufacturer certified
ACCA MemberAssociation member

Brands carried or installed

Carrier

About the website

Website quality (AI-assessed): 8/10 · Current copyright 2026; Complete service and contact info

Recent changes

What changed on the Markool Heating Cooling Plumbing website and Google listing, as detected by Coldlytics on each visit.

Oct 15, 2026
Google Business category is now Plumber
Oct 13, 2026
Google reviews went from 593 to 595

Coldlytics tracks changes like these across millions of businesses, so you can reach companies the moment they add a pixel, start hiring, or switch software.

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Contact Research

People Search

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Integrations

Markool Heating Cooling Plumbing

Company Overview

Company Name

Address

Website

Phone

Approx. Annual Revenue

Employees

Established

Google Reviews

Google Business Category

About Markool Heating Cooling Plumbing

Business Profile

How Markool Heating Cooling Plumbing works

Licenses, certifications & awards

Brands carried or installed

About the website

Recent changes

HVAC Companies near Frederick, MD

Frequently Asked Questions about Markool Heating Cooling Plumbing

What services does Markool Heating & Cooling offer?

How can I get a quote for a new HVAC system?

What financing options are available?

What is the service area for Markool Heating & Cooling?

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Technologies Used

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Key Decision Makers