Chain Restaurants

Locally owned and operated, D.N.I. Heating, A.C. and Refrigeration, Inc. caters to the specifics of your operation. Let us meet your goals through trusted innovations in commercial HVAC, refrigeration and restaurant equipment. From boilers and air conditioners to hot water heaters, we fulfill the highest expectations of our clients.

Machine shops

With more than 25 years of service, D.N.I. Heating, A.C. and Refrigeration, Inc. customizes our recommendations, processes and objectives to suit the unique challenges of your operations. From heating and cooling to water heating, we find the right solution and services for you.


Covering temperature control, water heating, indoor air quality and so much more, D.N.I. Heating, A.C. and Refrigeration, Inc. elevates efficiency, productivity and comfort for our commercial clients. We are well-versed in the specialized needs of local breweries and look forward to making cost-effective, time-saving and worthwhile improvements to your facility.

Coffee Shops

Heating, cooling, water heating, refrigeration, air quality and restaurant equipment are all essential to the day-to-day operation of your coffee shop. D.N.I. Heating, A.C. and Refrigeration, Inc. is your single source for expertise, experience and excellence of workmanship.

Server/Computer rooms

Sensitive environments such as server and computer rooms require specialized, reliable and customized systems and services. D.N.I. Heating, A.C. and Refrigeration, Inc. is up to the challenge, proven dependable and available 24/7.

Mechanic Shops

For mechanic shops in Longmont, CO and surrounding areas, service from D.N.I. Heating, A.C. and Refrigeration, Inc. is synonymous with quality. Our level of products, workmanship, skills and resources make everyday responsibilities so much easier. Count on us for HVAC, water heating, IAQ add-ons and more.

Local Restaurants

Professionals services from D.N.I. Heating, A.C. and Refrigeration, Inc. cover refrigeration, restaurant equipment, water heating, cooling and heating. From new installation and upgrades to important maintenance and all manner of repairs, we’re eager to impress.

Houses of Worship

Along with year round comfort, Houses of Worship required HVAC equipment to operate quietly, efficiently and reliably. When you call on D.N.I. Heating, A.C. and Refrigeration, Inc., we explain options, find solutions and achieve your goals.

Industrial Facilities

After 25+ years in-field, D.N.I. Heating, A.C. and Refrigeration, Inc. is prepared for the demands, challenges and specifics of your industrial facility. We don’t believe in one-size-fits all. For everything from heating and cooling to water heating and refrigeration, we offer the opportunity to elevate rewards, convenience and value.

Outdoor dining

Gorgeous scenery in Longmont, CO and surrounding areas opens up incredible opportunities for outdoor dining. Make comfort a priority and take the challenge out of weather extremes by calling on the experts from D.N.I. Heating, A.C. and Refrigeration, Inc. for effective, efficient solutions.

Medical Facilities

Whether temperature control, air quality or water heating is the focus, D.N.I. Heating, A.C. and Refrigeration, Inc. works with medical facilities, offering system design, installation, upkeep and repairs. Through proven products, technological innovation and conscientious job performance, we ensure reliable, effective and long-term operation.

NON- Profit organizations

D.N.I. Heating, A.C. and Refrigeration, Inc. serves as an asset to local non-profit organizations. Our skill set covers energy efficient, environmentally friendly and versatile HVAC, water heating, refrigeration and restaurant equipment and more.

Government facilities

D.N.I. Heating, A.C. and Refrigeration, Inc. represents an impressive resume. Our background includes a wide range of installation, maintenance and repair services for local government facilities. With a depth of experience in HVAC, water heating and so much more, we deliver best case results.

Residential homes

D.N.I. Heating, A.C. and Refrigeration, Inc. covers essentials and delivers higher standards. Homeowners in Longmont, CO and surrounding areas choose us for their heating, cooling, ventilation and water heating needs and we never disappoint. No matter the style or age of residence, we find the perfect fit for greatest rewards.

Apartment Complexes

Along with reliable, efficient and effective heating, air conditioning and water heating, apartment complexes require systems that simplify management, exemplify reliability and minimize maintenance and repair needs. D.N.I. Heating, A.C. and Refrigeration, Inc. provides all the products, services and 24/7 emergency coverage you need.

Commercial buildings

The demands of your commercial building are unlike any other. At D.N.I. Heating, A.C. and Refrigeration, Inc., we focus on the ideal components and services to streamline operation, trim costs and elevate comfort, hygiene and energy efficiency.

Water treatment plants

D.N.I. Heating, A.C. and Refrigeration, Inc. is well-versed in the systems and services required for water treatment plants. Our 25+ years of experience prepares us for the challenge. Check out our list of expertise, including heating, cooling and water heating, and reach out to us for prompt scheduling, honest answers and 24/7 emergency repairs.

Office Buildings

As a Bryant Factory Authorized Dealer, D.N.I. Heating, A.C. and Refrigeration, Inc. offers a depth of options, innovation and expertise. We excel at problem solving and take pride in customer satisfaction. For HVAC as well as water heating and so much more, we are your one-stop shop for outstanding results.

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!

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.

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.

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!

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!

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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.

AC Service, AC Installation & Heat Pump Repair Longmont, CO, Mead, CO & Firestone, CO

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