Furnace Installation & Replacement in Commerce City, CO

The 360 HVAC Pro Installation Guarantee

• How much does a new furnace cost in Denver?

  Most furnace replacements in the Commerce City and Denver metro run about $3,500 to $9,000 installed, depending on efficiency and size. A standard 80% AFUE gas furnace is roughly $3,500 to $5,500; a high-efficiency 96%+ AFUE model runs about $6,500 to $9,000 but cuts heating bills 15 to 20% and can qualify for rebates. Old-furnace removal is included, and you’ll get an exact price in writing after a free in-home assessment.

• Should I repair or replace my furnace?

  A good rule of thumb is the 50% rule: if the repair costs more than half the price of a new furnace, replacement is usually the smarter investment — especially on a unit over 15 years old. Some problems make replacement the clear call regardless of age, like a cracked heat exchanger, which is a carbon monoxide risk most companies won’t repair. If your furnace is younger and the fix is minor, repair almost always wins. We’ll show you the honest math.

• What are the signs I need a new furnace?

  The biggest signs are age (15+ years), a cracked or failing heat exchanger, repairs getting frequent or expensive, heating bills climbing every winter, rooms that never heat evenly, and short-cycling or new banging and rattling noises. A furnace over 15 years old showing a few of these usually costs more to keep limping along than to replace.

• What AFUE efficiency should I choose — 80% or 96%?

  AFUE is the percentage of fuel your furnace turns into heat. An 80% AFUE furnace sends 20 cents of every gas dollar up the flue; a 96% model wastes only about 4 cents and cuts heating bills 15 to 20%. In Denver’s long winters the high-efficiency unit typically pays back the extra cost in 4 to 7 years and lasts longer, though it needs PVC venting. We’ll lay out the numbers for your home — and won’t upsell a premium furnace if a mid-efficiency model fits.

• Does furnace sizing change for Denver’s altitude?

  Yes — and this is where a lot of installs go wrong. At Denver’s 5,280 feet, thinner air means gas furnaces produce less heat: a 100,000 BTU furnace at sea level makes only about 80,000 BTU here, so it has to be de-rated and sized accordingly. We run a proper Manual J load calculation and calibrate for altitude, so the furnace isn’t oversized (which short-cycles and wastes energy) or undersized (which struggles on single-digit nights).

• Should I get a heat pump instead of a furnace?

  It’s worth considering. A cold-climate heat pump heats and cools from one system, runs far more efficiently than electric heat, and qualifies for the biggest rebates. Many Denver homeowners choose a dual-fuel setup — a heat pump for most of the year with the gas furnace kicking in on the coldest nights. We install both and will walk you through what makes sense for your home.

• Do you handle furnace rebates and permits?

  Yes. We help you claim any Xcel Energy rebates and current federal or state incentives you qualify for — high-efficiency furnaces and heat pumps earn the most — handle the paperwork, and apply the savings to your quote. We’re fully licensed and insured, pull all required permits, schedule the inspection, and register your manufacturer warranty.

• How long does a furnace replacement take, and can you do it in winter?

  Most standard furnace replacements are done in a single day — old unit out, new one in, tested and heating. An 80%-to-high-efficiency upgrade that needs new PVC venting, or replacing your furnace and AC together, may take longer. And yes — furnaces fail in the cold, so we prioritize getting heat back on fast. If your furnace is down in a Colorado winter, call us and we’ll get to you quickly.