“We will diagnose your problem, provide you our guaranteed price up front, and complete the job to your satisfaction. Our mission is to do the job right – the first time.”

HVAC Service & Repair

Landgraf’s commercial division is the Denver area leader in providing commercial new build and tenant finish projects. We work extensively with owners, architects, and general contractors to ensure proper design of commercial buildings and tenant space as well as to meet all construction budgets and timelines. Our projects include mid-rise office buildings, restaurants, medical buildings of all types, schools (and upgrades to existing schools), industrial, retail strips, and warehouses.

At Landgraf, we specialize in all types of service and maintenance for our commercial customers. Whether it is furnace & boiler issues or temperature control problems we understand that your priority is Total Occupant Comfort and the last thing you need is unhappy customers, visitors, or employees. You can rest assured that Landgraf will take all the necessary steps to solve your problem with minimal interruption.

We Cover the Metro Denver Area

Our extensive fleet maintains the necessary inventory to get the job done quickly and quietly and are distributed strategically throughout the Denver Metro area – so we can get to you when you need us most.

Denver Commercial Heating & HVAC Service

Repair Service Maintenance Installation

  • Annual Maintenance Programs

  • All Brands

  • Water Heaters

  • Thermostats

  • Air Cleaners/Filters

  • Carbon Monoxide Detectors

  • Furnaces

  • Boilers

  • Humidifiers

  • Motors and Pumps

  • Roof Top Units

  • Inspections / Certifications

  • Business

  • Residential

  • Commercial

  • Office

  • Unit Heaters

  • Winterizations

What Our Heating Customers Say

“Landgraf put our furnace and air conditioner in three years ago, and they were so good, I of course called them when my hot water heater went out. They again were so professional and so competent. I will always recommend them. Thank you Landgraf!!!”

Susan F

Don’t put off maintenance and repairs any longer!

Our service fleet is waiting to serve you.