Furnace Installation and Replacement in Fort Collins, CO

Looking for reliable furnace installation in Fort Collins or surrounding Northern Colorado? At Fort Collins Heating & Air Conditioning, we’re known as the Home of the 1-Year Test Drive. Every installation comes with a 100% Satisfaction Guarantee, so you can feel confident your new furnace will keep your home warm all winter long.

Average Furnace Life Expectancy – 18 Years

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With four generations of experience, top-level workmanship, and a Low Price Guarantee (apples to apples), we’re the trusted local furnace company families have relied on since 1934; and voted #1 Furnace company for the past 10 years!

We are big enough to serve, small enough to care. Contact us to schedule your furnace installation today.

Why Choose Us for Furnace Installation & Replacement?

  • Home of the 1-Year Test Drive – If you’re not happy with your new system within the first year, we’ll make it right.

  • 100% Satisfaction Guarantee – Your comfort is our promise.

  • The Best Technicians in the Business – Skilled, NATE-certified professionals delivering precise, safe installations.

  • Top-Level Skill & Workmanship – We treat every installation like it’s for our own home.

  • Low Price Guarantee – Apples-to-apples, we won’t be beat on price for the same system and installation quality.

  • In-House Fabrication Department – We custom-build all sheet metal fittings for your home, ensuring maximum efficiency, performance, and airflow; instead of forcing your home to fit generic, mass-produced parts.

  • Family-Owned & Operated Since 1934 – Four generations strong in Northern Colorado. We will never sell out to private equity groups.

  • “Big Enough to Serve, Small Enough to Care.”

Professional Furnace Installation Done Right

Even the best equipment won’t perform without the right installation. Our technicians don’t just “hook up” a furnace; they carefully size, configure, and optimize your heating system for efficiency, comfort, and reliability.

Unlike many contractors who rely on one-size-fits-all parts, we manufacture custom sheet metal fittings in our own fabrication department. This guarantees that every furnace we install is matched perfectly to your home’s design, improving efficiency, airflow, and long-term reliability.

We install:

  • High-efficiency gas furnaces 
  • Propane furnaces 
  • Electric and hybrid heating systems 

When you hire Fort Collins Heating & Air, you’re getting top-level workmanship, custom-built components, and guarantees you won’t find anywhere else.

Furnace Replacement Services

If your current furnace is 15+ years old, breaking down often, or costing you more in energy bills, it may be time to upgrade.

Our team will:

  • Inspect your existing system and home requirements

  • Recommend the best new furnace for efficiency and comfort

  • Provide transparent pricing with our Low Price Guarantee

  • Install your system with precision and care, using custom-fabricated fittings from our in-house shop for the perfect fit

  • Back everything with our 1-Year Test Drive & 100% Satisfaction Guarantee

This ensures you get the right furnace, at the right price, installed the right way.

Serving Fort Collins & All of Northern Colorado

We proudly provide furnace installation and replacement in 

  • Surrounding communities

Current Promotions & Rebates

Take advantage of seasonal rebates, manufacturer incentives, and special financing to save on your new furnace. Call today to learn what’s available in your area.

Furnace Installation & Replacement FAQs

Should I repair my furnace or replace it?

Age is a good place to start. The average furnace life expectancy is 18 years, but age isn’t the whole story. If your furnace is 15+ years old, breaking down often, or costing you more in energy bills, it may be time to upgrade.

ENERGY STAR points to the same signs: a furnace that’s more than 15 years old, or equipment that needs frequent repairs while your energy bills keep going up. Repair or replace can be a tough call, and we believe in honesty and recommending the best solution for your situation.

There’s no single price. Efficiency is a big one: high-efficiency condensing furnaces are usually more expensive up front than standard-efficiency models. Your home’s setup matters too, so for an accurate number, one of our technicians needs to assess your system and your needs.

We back every replacement with our Low Price Guarantee (apples-to-apples), and special financing is available for HVAC installations (subject to credit approval).

AFUE stands for Annual Fuel Utilization Efficiency. In general, it’s the share of the heat in the fuel your furnace burns that turns into heat for your home instead of being lost. Higher is better.

ENERGY STAR puts Colorado in its U.S. North region, where a gas furnace needs a rating of 97% AFUE or greater to earn the label. That’s the bar for ENERGY STAR certification, not a minimum every furnace has to meet. Certified models can cost more up front, and ENERGY STAR says the difference is paid back over time through lower energy bills.

No. House Bill 23-1161 covers new products, not the furnace already heating your home. Since January 1, 2026, a new fan-type central furnace (a ducted, forced-air furnace) can’t be made, distributed, sold, or leased in Colorado unless its emissions stay at or under 14 nanograms of nitrogen oxides (NOx) per joule, or it’s certified to the most recent version of ENERGY STAR.

Products held in inventory in Colorado on that date are exempt.

It depends on who sends your gas bill. If it’s Atmos Energy, their SmartChoice program pays you back on high-efficiency gas furnaces. Atmos serves Greeley, much of Windsor and the rest of the Weld County side of our area.

In Fort Collins, Loveland, and most of Larimer County, your gas comes from Xcel Energy. The Xcel rebates on our rebates page are for upgrades like heat pumps, insulation, and air sealing, so ask us, and we’ll work out what applies. Programs generally set a minimum efficiency rating, and we’ll check what you qualify for before you buy.

Schedule Your Fort Collins Furnace Installation Today

Don’t wait until your old furnace fails in the middle of winter. Call Fort Collins Heating & Air Conditioning — the Home of the 1-Year Test Drive and 100% Satisfaction Guarantee — for trusted furnace installation and replacement in Fort Collins, CO.

We also serve Loveland, Windsor and near by areas.

Our Promotions

Our Reputation
Speaks For Itself

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Suzanne Bassinger profile picture
Suzanne Bassinger
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Jon took time to explain what he was doing and how he would prepare an estimate. I especially like that we scheduled a follow up visit for him to discuss the estimate he creates. Great service..
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Ron Harper profile picture
Ron Harper
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For years we have had our heating/cooling systems semi-annually maintained. Today we had the pleasure of having Jake Philpott do the maintenance tasks (at two different locations). We quickly learned he is dedicated to making sure the customer knows what's going on and the conditions of our systems. Very professional, personable, and made sure we were pleased with his work and conditions of his work area. Jake is another great representative for Fort Collins Heating & Air. Thanks Jake!!
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Matt Snook profile picture
Matt Snook
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I can't say enough about how good the sales process was. In shopping for an expensive heat pump and furnace system, for me I need a lot of information and I went through quotes with three companies, and Dave at Fort Collins Heating and air conditioning was far and away the best. I had a lot of detailed questions and he had all the answers, more detailed than I could have expected! I was especially impressed with his description of their quality control team, that comes through after the install and does a thorough check of static pressures, air flow and other performance measurements. They reward the install team for a good job and penalize them financially for a poor job. That's amazing. The installation guys seemed to know exactly what they were doing and worked well together and again answered all my questions, it looks perfect and they took 2 days for the install so it was not rushed. One of their competitors (in the yellow vans, hint) asked for 100% payment up front! And their prices were 40% higher, and they bragged about a one-day install, which is ridiculous. Installation is everything. Thanks for the system, I'm confident it is gonna work great.
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Kathy Monty profile picture
Kathy Monty
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Ft Collins Heating and Air checked our dryer and ductwork. Found a lot of lint! Pat had to get on the roof! Thank you
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Jose Juarez profile picture
Jose Juarez
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Great service
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k p profile picture
k p
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Jake was super quick through and very professional. Highly recommend their services
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David Jobusch profile picture
David Jobusch
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Jake did a great job on my annual fall furnace inspection and maintenance. He showed and explained the work done, and clearly explained the status of all involved — thankfully everything in good shape. Left the work area organized and clean.
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Joseph Horan profile picture
Joseph Horan
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Tucker was genuinely the best service person we’ve had for a long time. Very personable and efficient. Hopefully he’ll have a long no career with Fort Collins Heating and Air!
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Ashley Krueger profile picture
Ashley Krueger
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Jake did a great job servicing our furnace. He was professional, thorough, and explained everything he found. We really appreciated his communication and transparency.
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Katie Young profile picture
Katie Young
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He was very polite and knowledgeable. He prioritized our follow up visit due to his perceived urgency of the situation.