Boilers & Water Heaters

D.N.I. Heating, A.C. and Refrigeration, Inc. specializes in a full range of boiler and water heating services in Longmont, CO and surrounding areas. From new installation, upgrades, and conversions to repair and maintenance, we deliver a satisfying and sustainable end result. Contact us at 303-772-2490 for further information, honest recommendations, and expert workmanship. Our fully licensed and insured team is qualified and well-versed in all makes and models, and we look forward to finding the best solution for your specific needs.

Dependable Boiler & Water Heater Services & Installations

Whether you’re interested in tankless water heating, tank-style water heating, a residential or commercial boiler, radiant floor heating, or a snow melt system, make D.N.I. Heating, A.C. and Refrigeration, Inc. your go-to for hydronic services.

Professional & Efficient Boiler & Hot Water Heater Service

We simplify those everyday demands, not just saving you money through unmatched efficiency but ensuring greater reliability, convenience, and overall enjoyment. Let us answer your requirements quickly, smoothly, and to higher standards of quality.

Boiler Maintenance in Loveland, CO | Water Heater Maintenance Erie, CO | Water Heater Replacement Mead, CO

What our clients are saying

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.

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!

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!

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!

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.

Write a Review

Save today with our special offers

At D.N.I. Heating, A.C. and Refrigeration, 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

$300 Off

New Residential Evolution Furnace -or- A/C Installation


This coupon cannot be combined with any other offers.

Water Heater Service, Boiler Repair & Water Heater Maintenance Loveland, CO, Erie, CO, Firestone, CO, Louisville, CO, Mead, CO & Frederick, CO

Water Heater MaintenanceBoiler ReplacementBoiler RepairWater Heater ReplacementBoiler Service ∴ Erie, CO ∴ Lafayette, CO ∴ Longmont, CO