about us

Providing Trusted Heating & Cooling Service in the North Denver Metro Since 1998

Man kneeling next to an AC unit, using a tool. Outdoors, next to a building and stairs.

Thornton HVAC Company, Furnace Company & Local HVAC Service

Providing exceptional service, repair and installation of furnaces, air conditioners and boilers in Thornton, CO & Westminster, CO and surrounding areas since 1998. Marky Mark's Heating, Cooling & Plumbing, LLC is a full service heating and air conditioning company in Thornton and surrounding areas, offering a complete range of residential and commercial heating and air conditioning services.​
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“Dirt and neglect are the top causes of heating and cooling system inefficiency and failure. To ensure efficient system operation, it’s important to perform routine maintenance.” With the Energy Star Program, we deliver the safest, healthiest, and most comfortable energy efficient environment to your home and/or business for you, your friends, family, and clientele. Our comprehensive system maintenance service currently exceeds the standards set forth by the Environmental Protection Agency’s Energy Star program.

ommitted to excellence, prompt and professional customer service in Thornton brings us referrals. If you have questions or are looking to make your living or work environment more comfortable and affordable, have the job done right the first time by a STRONG ARM HVAC PROFESSIONAL in Thornton and surrounding areas. Call us today, it’s free! Marky Mark's Heating, Cooling & Plumbing, LLC will be happy to earn your business. “Thanks for checking us out on the web.”


Call Now at  720.961.4016 Open 7 days a week.


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Free Price Estimate

Marky Mark's Heating, Cooling & Plumbing, LLC offers you a completely free estimate on pricing. To receive this freebee, simply click below or call us today.

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Expertise.com award for Best HVAC & Furnace Repair Services in Thornton, 2022. Green and blue logo.

HVAC Specials & HVAC Savings

Save $25 On Your First Visit!

Mark wants your first experience with our company (& every one after that) to be top notch. So from us to you, here is a $25 gift certificate just for giving us a call at 720.961.4016. Please print this out and present it to technician at time of service in order to receive deal.

Coupon for $25 off HVAC repair from Marky Mark's, with a portrait of a smiling man.

FREE HUMIDIFIER

With the Purchase of a New Furnace


On qualifying equipment. Conditions Apply. Call for details.


No More Cold Water

Water Heater Diagnosis


Only $99.95


You always have hot water when we’re on the job! Our contractors diagnose water heaters for only $99.95. Rates depend on the unit size. Conditions Apply. Call for details.

Get a $100 Amazon Gift Card

With the Purchase of a New Furnace

Amazon logo with a curved yellow arrow beneath the

On qualifying equipment. Conditions Apply. Call for details.

$89 Furnace/AC Diagnostic

Get $40 OFF with repair on:


  • Indoor Quality Purifiers
  • Indoor Air Cleaners
  • Indoor Humidifiers
  • Furnaces
  • Air Conditioners

Contact us for fast troubleshooting and repairs. Conditions apply. Call for details.


Get an $250 Amazon Gift Card

With the Purchase of a New Furnace & AC System

Amazon logo with a curved yellow arrow beneath the

On qualifying equipment. Conditions Apply. Call for details.

Veterans Discount

$30.00 Off Any Repair


Only one per household and one discount at a time. Limited time offer. Call 720.961.4016 for details.


Senior Discount

$20.00 Off Any Repair


Only one per household and one discount at a time. Limited time offer. Call 720.961.4016 for details.