When you need reliable HVAC, furnace, water heater and air conditioning repair or installation in Greeley, the professionals of Red Line Mechanical, LLC are here to help. With over 30 years of industry experience, Northern Colorado trusts us for their project needs. We only work with leading industry manufactures so all our Greeley HVAC, furnace, water heater and air conditioning repairs and installations are done with high caliber materials. Our Red Line Mechanical, LLC technicians are held to the highest industry standards, so we provide routine trainings on the ever-changing regulations regarding technology and equipment.

  • Greeley Furnace

    Greeley Furnace

    Furnaces – Red Line Mechanical, LLC does routine furnace maintenance as well as installation services. Make sure your home is ready to go for winter and schedule an inspection with us. We provide a complimentary filter service with every inspection or repair visit.

  • Greeley Water Heaters

    Greeley Water Heaters

    Water Heaters – When you need a new water heater, we can ensure you’re getting the best. If you just want to make sure everything is running the way it should, we offer annual maintenance visits. We also provide a free quote with every repair visit or maintenance request.

  • Greeley Humidifiers

    Greeley Humidifiers

    Humidifiers – If you need to install a new humidifier or schedule a maintenance visit, contact your trusted team at Red Line Mechanical, LLC in Greeley. We will make sure your home is retaining the right amount of moisture all year long. We also offer a free filter service with every maintenance or repair appointment.



Red Line Mechanical, LLC in Greeley is a leading company for HVAC, furnace, water heater and air conditioning repair and installation. We are dedicated to quality customer satisfaction and safety is one of our top priorities. When we can make our customers happy while keeping them and their families safe, it’s been a good day!



We have been serving Greeley for many years and are a trusted source for all types of HVAC installation and repair.


We only work with the highest rated manufacturers in the industry and guarantee all of our Redline Heating, furnace, and water heater service, repair, installation and replacement work.


We hold our Redline Technicians to the highest possible industry standards. We provide ongoing training for our techs to make sure they are up to date with the latest industry knowledge.


Redline Heating offers repair and replacement services for heating, AC systems, furnaces, water heaters, and more throughout Greeley and Northern Colorado. We provide FREE quotes for all service types.


*Call today to find out about our warranty information.


We provide everything you need to repair or replace your HVAC system. We have the equipment, industry knowledge and trained technicians to get the job done right.


We have been repairing, installing, and replacing air Conditioners, furnaces, water heaters and humidifiers in the Greeley area for over 30 years and we take pride in what we do.




  • I am a member of their service plan and pay $19/month for their ongoing routine inspections and service. As a member, the cost savings I get for almost any repairs or service is almost enough to cover the monthly fees. They come out every three month and spend at least an hour checking and servicing my furnace and air conditioner including replacing the air filter.

    Elliot A.
  • Heater broke on a Saturday and they saved the day! Being new to the area I had not needed this service before but I will defiantly be calling them again for all my needs. Their prompt and professional service was exceptional!! Really enjoyed doing business with them (especially the manager who did the service call) even though it was not a desire predicament. Highly recommended!!

    Richard P.
  • Friendly people and great service. Not a single bad experience in the last 4 years of business relationship.

    Dan S.
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