When it’s critical that you receive the right parts, fast, call the LONG PartsPros - our dedicated team of parts experts. They have the knowledge and experience to provide high quality HVAC, plumbing and hydronics parts, with guaranteed customer satisfaction.


Buy on Your Terms

We have three convenient ways to order parts today:

Order Online

Know what you need? Our online parts warehouse boasts thousands of parts, just a click away.

Order online now

Order by phone

Have questions? Looking for something hard to find? Give us a call at (855)-566-4778, any time between 7:30 AM and 4:30 PM (MT), and one of the LONG PartsPros will be happy to assist you.

Visit Our Warehouse

Stop by the parts counter in our Littleton, CO office to see the LONG PartsPros in action and experience service at its best.

World-class Customer Service

Lots of companies sell parts, but no one provides personalized service quite like the LONG PartsPros. Backed by over 50 years of company experience and a team leader with 25 years of parts experience, our team has better manufacturer relationships and more legacy and specialty parts knowledge than anyone in the industry. Our team goes above and beyond to ensure you receive the right parts the first time, on schedule and on budget.

Same-day Shipping

Not only are our shipping rates low, most orders completed before 2:00pm MT are processed and shipped the same day.

OEM Parts

We carry a large variety of Original Equipment Manufacturer (OEM) parts, so that you never have to sacrifice quality or compatibility.

Legacy & Specialty Parts

While building technology continues to advance, your system may not. LONG has exclusive access to hard-to-find legacy and specialty parts for aging systems.

Manufacturer & Product Selection

Thanks to our long-standing, strategic partnerships, we house thousands of ready-to-ship parts from more top brands than anyone else, giving you access to the widest variety of products in one convenient place.


We work with industry leading manufacturers and partners to bring you high quality parts, including:

  • Actuators
  • Air Cleaners
  • Air Conditioners
  • Air Filter & Cleanroom Filter Modules
  • Air Handlers & Equipment
  • Air Handling & Fan Coil Units
  • Air Purification DeviceAirflow Regulators
  • Architectural Flat Panels
  • Attenuators
  • Automatic Flow Controls
  • Backflow Preventers
  • Boiler Controls
  • Boilers
  • Burners
  • Cabinet/Unit Heaters
  • Central Chiller Plants
  • Chemical Free Water Treatment
  • Chiller Beams
  • Chillers
  • Clean Steam Generators
  • Coils
  • Commercial/Industrial Noise Control
  • Compressors
  • Condensate Handling Pumps & Traps
  • Condensers
  • Control Systems
  • Coolers
  • Cooling Towers
  • Dampers
  • Dehumidifiers
  • Diffusers
  • Duct Systems
  • Dust Collectors
  • Ecology Units
  • Economizers
  • Exhaust Hoods
  • Exhaust Stacks
  • Exhaust Systems
  • Expansion Tanks
  • Fans
  • Feeders
  • Flexible Connectors
  • Flexible Duct Systems
  • Flow Meters
  • Flue Stacks
  • Frequency Drives
  • Furnaces
  • Gas Ignition Systems
  • Heat Exchangers
  • Heat Pumps
  • Heat Wheels
  • Hepa Filters & Housing
  • Hose Kits
  • Hose Reels
  • Hospital Operation Room Systems
  • Hot & Chilled Ceilings
  • Humidifiers
  • HVAC Systems
  • Indoor Air Monitoring
  • Louvers
  • Meters
  • Mini-split Systems
  • Motors
  • Pipe & Fittings
  • PTAC Units
  • Pumps / Pump Systems
  • Radiators
  • Refrigeration Systems
  • Registers
  • Regulators
  • Rooftop Units
  • Self-contained Units
  • Smoke Detectors
  • Space Heaters
  • Storage Tanks
  • Strainers
  • Switches
  • Terminal Units
  • Thermal Ice Storage Systems
  • Thermostats
  • Valves
  • VAV Boxes
  • Vents
  • Waste Water Heat Reclaim
  • Water Heaters Water Tanks


As part of our ongoing commitment to training and education, the LONG PartsPros regularly receive product training from our leading manufacturers, including Daikin, Distech, KMC, Loren Cook, Nortec, and Tridium – just to name a few.

Our Clients Speak Out

"…Jake is the best parts guy I know. I have used him for about three years now for most of my part needs here at the stadium. There have been a couple times where he has really got me out of a pinch by providing a part last minute and even offering for someone to bring it down to me. I always know I will get a quick response on any request I have. Because of Jake we will continue to use LONG as out first option for parts here at the stadium."
Jeremiah J. Roybal
Denver Broncos Football Club
“I was working on an Eng Air unit. I was talking with Jake about the issues and he was able to help figure out the problem and put me in touch with tech support to verify the correction. Always great to have great support that LONG offers.”
Devin Barber
Denver Public Schools
"If there is a part that is hard to find, I know Jake will find it…I have been dealing with Jake for more than 15 years. There have been a lot of times he has come through with hard to find parts. I will keep coming back time after time."
Troy Ryder
“They always go out of their way to make sure I am taken care of. There has been many times they have stayed so I can get the parts I needed.”
Troy Cole
Denver Public Schools
“I call on LONG because of their responsiveness. I know that they will answer my phone call or email and get back to me with an equipment selection or product information quickly. When it comes to equipment selection they are the first call I make.”
Erik Johnson
Engineering System Solutions
“I want to thank you and your staff for supporting us in our effort to resolve issues at the BLM Hot Shots Building at Craig. I believe that with your help, we have shown the client that the cooling system does work as designed. Thanks to Dave Gardiner, Steve Dalvit, Travis Strabala and Joe Riley. We appreciate their help.”
Chuck E. Gumeson
Senior Engineering Specialist


LONG is proud to specialize in a wide range of markets. We take the time to understand your industry and individual needs to deliver high-performance results, no matter the facility.

  • Personalized parts service for the education industry
    • Education

  • Personalized parts service for the commercial office industry
    • Commercial Office

  • Personalized parts service for the healthcare industry
    • Hospital, Healthcare & Pharmaceutical

  • Personalized parts service for the telecommunications industry
    • Data Center & Telecommunication

  • Personalized parts service for the government industry
    • Government, Military & Institutional 

  • Personalized parts service for the hospitality industry
    • Hospitality & Multi-tenant

  • Personalized parts service for the retail industry
    • Retail

  • Personalized parts service for the industrial industry
    • Industrial

  • Personalized parts service for the agricultural industry
    • Agricultural

Don’t sacrifice quality – shop our huge selection of OEM parts today.


News & Knowledge Center

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Energy Savings: A Closer Look at the Impact of Air Curtains

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7 Reasons to Use Air Curtains in Your Facility

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