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HVAC and plumbing service you can trust

DNI Northern Colorado Mechanical Services HVAC Plumbing Refrigeration LogoWe provide expert commercial/residential Northern Colorado HVAC, plumbing, commercial refrigeration/restaurant equipment, boilers, hot water heaters & more in Longmont, Boulder, Loveland and surrounding areas.

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$65 AC or Furnace Inspection
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Featured Services


We make sure there’s no reason to live with anything less than peak performance from your heater.

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Air Conditioning

Our focus is the reliable, efficient, and long-term performance of your air conditioner.

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Commercial HVAC

We provide business owners in with a dependable source for a full range of commercial HVAC options.

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New Construction

We offer ease of system management, exceptional energy savings, personalized control, and ideal and consistent comfort.

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Whether you’re dealing with a leaky faucet or slow-draining fixtures, we deliver exceptional and sustainable plumbing solutions.

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Commercial Refrigeration

We provide business owners in with a dependable source for a full range of commercial refrigeration options.

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hvac company in Longmont, Boulder, and Loveland Colorado

24/7 Emergency HVAC Refrigeration & Plumbing Service Longmont, CO

DNI Heating, Cooling, Refrigeration, & Plumbing, Inc. remains dedicated to value you can trust.

Our wide range of expertise and commitment to quality equipment and workmanship makes us the right choice for new construction installation, upgrades, repairs, and seasonal maintenance for HVAC and plumbing services. The fully licensed and insured team from DNI Heating, Cooling, Refrigeration, & Plumbing, Inc. always finds the best solution based on your specific needs.
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A Factory-Trained HVAC Company

Expert Heating & Cooling and Plumbing Services in Longmont, Boulder, Loveland and surrounding areas

Give us a call at 970-469-9446 to learn more about opportunities to improve the comfort, convenience, efficiency, and health of your indoor environment. Our specialities include tankless water heating, home automation systems, radiant flooring, duct sealing, and so much more.

Your Preferred Northern Colorado HVAC & Plumbing Company

We frequently provide furnace, A/C and plumbing services in Northern Colorado.

Our team offers Northern Colorado HVAC, Plumbing, and Mechanical Services and can respond quickly if you find yourself without heating or cooling due to an HVAC or plumbing failure. Give us a call at 970-469-9446 to speak to our Boulder team and schedule an appointment. We keep plenty of parts on our trucks passing through Boulder — we often can fix the issue on our first visit. If you have an issue beyond repair or could be too costly to justify on an old system, we keep name-brand HVAC or plumbing equipment in stock for full system replacements. Contact us for:

  • Air Conditioning Service in Northern Colorado
  • A/C Repairs in Northern Colorado
  • Northern Colorado Heating Service & Repairs
  • Heating & Cooling Services in Northern Colorado
  • Plumbing Services in Northern Colorado

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Proudly Serving NORTHERN COLORADO With Top-Notch HVAC Refrigeration & Plumbing Service

A Comprehensive List of HVAC & Plumbing Services Offered in Northern Colorado

DNI Heating, Cooling, Refrigeration, & Plumbing, Inc. is your one-stop-shop for Northern Colorado! Whether you need a quick A/C tune-up, your furnace quit working in the middle of winter, your faucet is leaking, or you want to improve energy efficiency with a brand new HVAC system — we’ve got you covered! Give our Longmont team a call 970-469-9446 to get on your way to improved indoor comfort. We take pride in our work and look forward to improving your home’s heating, cooling, and plumbing performance through factory-trained techniques and brand-name components:

  • Northern Colorado HVAC System Repairs
  • Air Conditioner Repair in Northern Colorado
  • Offering Furnace Repair in Northern Colorado
  • Northern Colorado Heating & A/C Services
  • Northern Colorado Plumbing Services

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Northern Colorado’s Colorado’s Heating, Cooling & Plumbing Experts

All Types of Services Offered in Northern Colorado Mechanical, Plumbing Services & HVAC.

If you live in Loveland and are looking for a reliable and up-front HVAC and plumbing company, give us a call! We take pride in our work and offer Northern Colorado homeowners top-tier HVAC and plumbing installation, HVAC and plumbing service, and HVAC and plumbing repairs. We can replace, maintain, and fix and brand of heating, cooling, and plumbing equipment and our technicians arrive prepared! Give us a call if you’re ready to take control of your comfort and work with an honest company who takes pride in their reputation throughout Loveland. We offer a full breadth of services including:

  • Air Conditioner Repairs in Loveland, CO
  • Loveland A/C Service & A/C Installation
  • Loveland Furnace Services & Heater Repairs
  • Heating & Air Conditioning Service in Loveland
  • Plumbing Fixtures Installation Service in Northern Colorado

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Friendly and Timely Heating & Cooling & Plumbing Services

Professional HVAC & Plumbing Services in Longmont, Boulder, Loveland and surrounding areas

Focusing on honesty and dependability, we won’t sell you something you don’t need. Over our 27 years of service, we’ve set ourselves apart as a reliable source for a satisfying and sustainable end result. DNI Heating, Cooling, Refrigeration, & Plumbing, Inc. remains available 24/7 and offers prompt response throughout Longmont, Boulder, and Loveland 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