Indoor Air Quality

D.N.I. Heating, A.C. and Refrigeration, Inc. resolves concerns with indoor air quality in Longmont, CO and surrounding areas. No matter the issue, whether for residential or commercial application, we find the best solution based on your specific requirements. There’s no guesswork involved. We won’t sell you something you don’t need. Our fully licensed and insured technicians combine experience, training, and proven testing procedures to determine the exact threat. From airborne contaminants and overly dry air to excessive moisture, energy waste, odors, and more, we deliver satisfying and sustainable improvement.

Exceptional Indoor Air Quality Solutions

Don’t hesitate to contact D.N.I. Heating, A.C. and Refrigeration, Inc. at 303-772-2490 for a complete range of indoor air quality services throughout Mead, Longmont, Firestone, Frederick, Loveland, Berthoud, Johnstown, Erie, Lafayette & Louisville, CO. Established in 1997, our depth of resources includes a full range of duct services and comprehensive line of air quality accessories to accommodate any challenge, size of space, and HVAC system. Taking advantage of industry leading technology, we bring you efficient, quiet, and low-maintenance options, including air purifiers, dehumidifiers, humidifiers, UV lights, and energy recovery ventilation systems. D.N.I. Heating, A.C. and Refrigeration, Inc. provides service you can trust.

What our clients are saying

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!

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.

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. 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.

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.

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!

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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.

Indoor Air Quality Services, Indoor Air Quality Products & Indoor Air Quality Solutions Longmont, CO, Erie, CO, Firestone, CO, Louisville, CO, Frederick, CO & Loveland, CO

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