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Most furnace replacements come together faster than homeowners expect, and smoother too. The anxiety usually comes from not knowing the sequence: what happens before the technicians arrive, what happens while they're in your home, and what you should check before they leave. Once you know the order, the whole thing feels a lot more manageable.
I'm Dale Chason, the HVAC Manager at Awesome Home Services. I've overseen furnace replacements in Colorado Springs homes at every level: standard gas furnaces in older homes, high-efficiency units in newer construction, and plenty of systems that were installed wrong the first time around.
This blog covers the full process from the estimate visit to the day your new system runs on its own. If you're still deciding whether it's time to replace, our signs it's time to replace your furnace blog covers that. If you want the furnace cost picture for 2026, we have a breakdown for that as well. This one is just the installation process, start to finish.
To schedule a free estimate for furnace replacement, call (719) 800-7121 or contact us online.
What Happens Before Installation Day?
Before a new furnace goes in, we do a load calculation to make sure the replacement unit is sized correctly for your home. This step matters more than most homeowners realize. A furnace that's too large for the space short-cycles, which means it turns on and off more frequently than it should and wears out faster than its rated service life. One that's too small runs constantly and never fully heats the home. The calculation accounts for your square footage, ceiling height, insulation, window count, and how the existing system was set up.
Your technician walks the existing system and measures the space to confirm what size replacement unit your home needs. That's what the estimate visit is for, and we offer free estimates on installations. If the ductwork has conditions that would underperform with the new unit, that conversation happens before equipment gets ordered.
We pull the permit before we schedule the installation. Colorado Springs requires one for furnace replacement, and it's on our side to have it in place. The permit triggers the code inspection that closes out the job. That inspection is the step that confirms the work meets current standards. Some contractors skip it to move faster. We don't.
What Happens on Installation Day?
For a standard furnace replacement in a Colorado Springs home, the installation runs four to eight hours, depending on the complexity of the existing setup. The crew works in the equipment area for the full duration. By the time they leave, the old unit is out, the new one is in and connected, and the startup sequence is done. Jobs that also address ductwork conditions run on the longer end of that range.
Someone needs to be home for the duration. Not standing in the furnace room the whole time, but available if the technicians have questions and there to do a walkthrough when the job is complete. Clear the area around the furnace before the crew arrives if there's any equipment or storage nearby. That prep alone keeps the job from running longer than it should.
One thing specific to Colorado installations is that at roughly 6,000 feet elevation, combustion efficiency operates differently than it does at sea level. High-efficiency furnaces require specific venting configurations at altitude that the manufacturer's standard instructions don't account for.
Our technicians are trained on high-altitude installation requirements, which is why this matters when choosing a contractor. A system installed without accounting for elevation doesn't run correctly from the start, and the adjustments that fix it after the fact are more involved than getting it right the first time.
What Happens After the Installation?
After the installation, your technician runs the new system through a startup sequence and monitors it across several heating cycles. If something's off with gas pressure, the heat exchanger seal, or how the thermostat is communicating, it shows up during the startup rather than in January when you call with a problem.
Before they leave, ask for a walkthrough of the new thermostat if it was replaced or updated, especially if it's a programmable or smart model. That five-minute conversation saves you from figuring it out yourself at 9 PM when the house gets cold.
The permit inspection is a separate visit, typically scheduled within a few days of the installation. A city inspector comes to verify the work meets code. But if the inspector needs access to the furnace area, someone should be available that day. Our team handles the scheduling coordination; you just need to be reachable.
What Protects a New Furnace After It's In?
A new furnace is a significant investment, and the first full heating season is when you find out whether everything is calibrated the way it should be. I recommend scheduling a maintenance visit before that first hard winter run. Our Awesome Club Membership Program includes annual heating system inspections, priority scheduling, and member-only discounts on repairs. A fall tune-up gives our technicians a chance to verify the system is still operating within spec, check for anything that shifted during the initial months of use, and confirm the filter situation before the unit runs at full load for the first time.
It's also worth knowing that most manufacturer warranties require documented annual maintenance to stay valid. The membership inspection covers that requirement.
Contact Us for Furnace Replacement
A furnace replacement, when it's managed well, takes one day of work. The process from estimate to completed permit inspection typically runs one to three weeks, depending on equipment availability and permit timelines. If you've already decided it's time, the next step is a free estimate where we size the new unit to your home, walk you through the equipment options, and give you a price before anything is scheduled.
Awesome Home Services handles furnace replacement and HVAC service across Colorado Springs and the surrounding communities.
Written by: Dale Chason, HVAC Manager
Dale serves as the HVAC Manager at Awesome Home Services, bringing decades of hands-on industry experience and a leadership style rooted in consistency, care, and accountability. Dale has been in the HVAC industry since 1995, beginning his career right after graduating high school. He worked his way up from install helper to lead installer, service technician, sales, and ultimately into management. That full-circle journey gives him a deep understanding of every role within the HVAC department and allows him to lead with empathy, practical knowledge, and respect for the work being done in the field.
