HVAC & Mechanical Systems Manufacturers

Regardless of whether you own a furnace, ice machine, water heater, central air conditioning unit, HVAC or refrigeration equipment that’s made by a well-known manufacturer or you own something that’s a bit less common in your Longmont home or business, we can help with repair and replacement.

Below you’ll find a sampling of the refrigeration, ice machine, boiler, and water heater appliance equipment we’re able to repair, replace, and service.


Our company is capable of assisting with all types of boilers, including:

  • Allied
  • American Standard
  • Bryan
  • Buderas
  • Burnham
  • Crown
  • Dunkirk
  • Heat Transfer Products
  • Lennox
  • Lochinvar
  • Munchkin
  • Peerless
  • Raypak
  • Rinnai
  • Sellers boiler systems
  • Smith
  • Teledyne Laars
  • Utica
  • Weil McLain
  • ..and many other brands

If you don’t see the manufacture of your boiler listed, that’s OK. Simply call us today to ask if we can help you, because there’s a very high likelihood we can help get your boiler back up and running smoothly.


Our technicians in Fort Collins, Boulder, and Longmont are equipped to service, repair, and replace all makes and models of ice machines, including not limited to:

  • Hoshizaki
  • Ice O matic
  • Manitowoc
  • Scotsman
  • …and all other brands


We can also help you with a full range of refrigeration equipment repairs in the Longmont and Northern Colorado areas. If you don’t see your brand listed, give us a call and we’ll be happy to help. Our company serves all brands of refrigeration equipment including:

  • Artic
  • Beverage Air
  • Continental
  • Delfield
  • Howard McCray
  • Kolpak
  • Silver King
  • Traulsen
  • True
  • Victory
  • …and all other brands


If your water heater is giving you grief, don’t fret. Our technicians can service and repair all makes and models of residential and commercial water heaters in Longmont and Boulder, including:

  • AO Smith
  • Bradford White
  • GE
  • Kenmore
  • Reliance
  • Rheem
  • Ruud
  • Whirpool
  • …and all other brands

Air conditioning, furnace, HVAC, boiler, water heater, refrigeration, and ice machine repair and service experts in Longmont and Northern Colorado.

When you work with DNI Heating, Cooling, Refrigeration, & Plumbing, Inc., you can be assured you’ve contacted a company that will work quickly and efficiently to fix whatever problem you’re experiencing. We also offer 24-hour emergency service, because we know that appliances don’t only break down during the hours of 9am-5pm, Monday through Friday. Typically, breakdowns occur at the worst possible time. We understand—we’ve been there.

Call today to get started

Regardless of the type of system failure you’re dealing with, we’re here to help. Longmont, Boulder, and Denver residential and commercial customers can reach us at 970-469-9446 while home and business owners in Loveland, Fort Collins, and Greeley can reach us at .

Call DNI Heating, Cooling, Refrigeration, & Plumbing, Inc. today to learn why we’re the most trusted HVAC, furnace, boiler, central air conditioning, ice machine, water heater, and refrigeration equipment repair provider in Longmont, Boulder, and Northern Colorado.

What our clients are saying

R. Larson

Extremely happy with my decision to use DNI. Installed cash price of my new furnace & AC unit was about 23% lower than the competition. Chris was very knowledgeable, conscientious, and top notch! The whole crew was excellent!

R. Barcklow

DNI and Chris specifically were amazing. My furnace went out with the first Colorado storm and they were able to come out the next day and provided me with honest, transparent service so I could make the best decision for my budget. There was never any pressure from Chris between buying a new furnace and fixing my old one. I felt like they were patient and willing to work with me and my needs. I would highly recommend DNI for heating services.

J. Jacobs

The service personnel were top-notch – friendly, professional, and dealt with some unexpected issues without missing a beat! Plus, they were dog lovers and made friends with my best buddy Highly recommended!

K. Kitten

Trustworthy, fair and will advocate for their clients. Whether it is maintenance or replacement DNI is wonderful. As a small business, the options are limited and expensive for replacing a unit that is original to the building. Chris L. worked exceptionally hard to ensure that our needs were met, ultimately finding the most cost effective solution.

M. Southworth

DNI Heating got out to my house, assessed the problem and installed a new furnace for us within hours on a Friday afternoon. We did not have to worry about the 0 degree temperatures coming in that weekend. The service was great from the minute I called to helping us register our furnace.

D. Johnson

This crew has saved me on multiple occasions. From heating to ac service they have done it all for me. Always great customer service and a quick response time! Thanks for the continued great service DNI!

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Save today with our special offers

At DNI Heating, Cooling, Refrigeration, & Plumbing, Inc. our goal is to make your residential or commercial property more comfortable, and to help you save money. We are happy to provide you with the following special offers!

Special Offers


Local Residential Service Call


This coupon cannot be combined with any other offers. Coupons must be mentioned when booking service calls.

Expiration: 9/30/24