HVAC Services in Longmont Colorado

Locally owned and operated, D.N.I. Heating, A.C. and Refrigeration, Inc. takes pride in achieving superior temperature control, energy efficiency, indoor air quality and reliability for Longmont home and business owners. Our expertise covers residential and commercial heating, cooling, refrigeration, water heating, boilers, restaurant equipment and so much more. As a Bryant Factory Authorized Dealer, we continue more than 25 years of dedication. Call 303-772-2490 to schedule skilled service, including 24/7 emergency assistance anywhere throughout greater Longmont, CO.

Heating Systems, Furnaces, & Forced Air

Longmont winters get extremely cold, even dangerously cold if your heating system is unable to perform its job. You can count on D.N.I. Heating, A.C. and Refrigeration, Inc. to consider your family’s comfort a top priority and do our part to ensure your home temperature is properly maintained throughout the coldest days of the season.

Heating System Repair

If your system is no longer able to keep indoor temperatures at an acceptable level or does so intermittently, our heating repair technicians can help! No matter what age, make, or model you have, the D.N.I. Heating, A.C. and Refrigeration, Inc. team can source parts and perform repair-work.

Heating Service & Maintenance

A heating system is one of the biggest investments you will make in your home. Keep it running efficiently and properly by scheduling regular heating service appointments for balancing, cleaning, and adjusting of the inner workings.

Heating Installation & Replacement

If you are ready for an upgrade, we will be happy to give you a no-obligation quote for a heating system replacement. We carry a wide variety of options that will work for any size home or budget.

Central Air Conditioning

Our summers in Longmont seem to get hotter every year! For the hottest few days, air conditioning isn’t optional – it is a requirement for good nights of sleep and comfortable summer afternoons. Whether you need a tune-up, a simple repair, or a full A/C system design, D.N.I. Heating, A.C. and Refrigeration, Inc. is here for you. Give us a call to schedule your appointment in Longmont.

Air Conditioning Repair

No cold air? Contact our air conditioning repair team for prompt and effective corrective action. Our years of experience and through manufacturer-driven training ensures we are prepared for any sort of problem your A/C may be having.

A/C Service & Maintenance

The best way to keep an air conditioner running up to or even beyond the manufacturer’s advertised lifespan is to keep up with recurring air conditioner service appointments. Call now to setup a convenient time for your A/C tune-up.

A/C Installation & Replacement

Air conditioning technology has come a long way in the last few years. You’ll be amazed how much of an improvement a new air conditioning system makes in your home. From smart app-connected features to consistent cooling and energy-saving technology, you will fall in love with your new A/C system!

About Longmont – Our Vibrant Local Community

Situated between Boulder and Loveland, Longmont is well-known for gorgeous views of Longs Peak, outdoor adventure, an inspiring local art scene and great brews. Left Hand Brewing Company and Oskar Blues Brewery, two of Colorado’s largest craft breweries, call Longmont home, adding to a cidery, four distilleries and nine more craft breweries. Whether you want to hike, bike, kayak, paddleboard, snowshoe, golf, camp, fish, shop or dine on any preference of cuisine, there’s something to appeal to everyone.

From browsing locally grown produce at Longmont Farmers Market to ice skating at Longmont Ice Pavilion or enjoying the thrills of the Mile-Hi Skydiving Center, the changing seasons bring new options for activities and scenery. With average temperatures dropping into the low teens and soaring to 89 degrees, heating and cooling is a necessity. Covering everything from AC repair to furnace installation, D.N.I. Heating, A.C. and Refrigeration, Inc. is the premier HVAC service provider in Longmont.

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.

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.

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.

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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

303-772-2490

This coupon cannot be combined with any other offers.