Duct Services

Take the opportunity to cut costs and increase HVAC efficiency by calling on DNI Heating, Cooling, Refrigeration, & Plumbing, Inc. for a full range of duct services in Longmont, Boulder, Loveland and surrounding areas. Our qualified professionals provide meticulous duct inspections and testing to evaluate performance and determine the most effective course of action. Qualified in residential and commercial cleaning, repair, maintenance, and sealing, there’s simply no challenge we can’t resolve. Rest assured, we don’t sell you something you don’t need. At DNI Heating, Cooling, Refrigeration, & Plumbing, Inc., we always find the ideal solution based on your best interests.

Expert Air Duct Services

Established in 1997, DNI Heating, Cooling, Refrigeration, & Plumbing, Inc. has built a reputation for honest and dependable duct services and repairs throughout Longmont, Boulder, and Loveland Colorado. We recognize the demands, expense, and concerns caused by severe local weather as well as the major impact of duct system operation. Neglected ducts often provide the ideal breeding environment for insects, rodents, mold, mildew, and bacteria, causing concerns with indoor air quality and health threats.

For duct services, cleaning, repair, or sealing, contact DNI Heating, Cooling, Refrigeration, & Plumbing, Inc. today!

Contact DNI Heating, Cooling, Refrigeration, & Plumbing, Inc. at 970-469-9446 for problems with the ductwork as well as proactive measures. Our fully licensed, trained, and insured HVAC specialists are experienced in residential and commercial equipment and outfitted with state-of-the-art technology. Our in-house sheet metal fabrication shop allows us to resolve any issue quickly, properly, and at competitive prices.

Some indications of duct system concerns include:

  • An increase in utility bills
  • Musty or unpleasant odors supplied from air vents
  • Excess airborne or surface buildup of dust
  • Stuffy, damp, or clammy feeling
  • Overheated or chilly rooms despite thermostat setting
  • Variations in temperature from room to room

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