How Much Does a New Furnace Cost in Loveland, CO? (2026 Guide)

Cost by furnace type

The efficiency rating, AFUE, is the biggest single price factor. AFUE is the share of your gas that becomes heat in your home: an 80 AFUE furnace turns 80 cents of every gas dollar into heat and sends 20 cents up the flue, while a 96 AFUE model keeps 96 cents working for you (Source: U.S. Department of Energy, energy.gov).

• 80% AFUE standard furnace: $4,200 to $6,500 installed. Vents through the existing metal flue, so swaps are simple. Lower equipment cost, higher gas bills for the life of the unit.
• 96%+ AFUE condensing furnace: $6,000 to $9,800 installed. Needs PVC venting and a condensate drain, which adds labor on a first-time conversion. The gas savings are real in a Loveland winter, and these are the furnaces most homeowners here choose now.
• Modulating and variable-speed top tier: $8,500 to $12,000 installed. The quietest, steadiest heat, with a blower that runs at the speed the house needs instead of blasting on and off. Worth it for comfort complaints and two-story homes with uneven rooms.

These ranges cover equipment, labor, permits, and haul-away of the old unit for a typical Thompson Valley home. They are planning numbers, not quotes. Your written quote comes after a tech sees your home, and ours is free: (970) 555-0134.

What moves the price

• Size and sizing. Bigger homes need bigger furnaces, and bigger costs more. What matters more is correct sizing. A proper load calculation accounts for your square footage, insulation, windows, and ceiling height. An oversized furnace short cycles, wears out early, and leaves rooms uneven; an undersized one runs constantly on cold nights.
• Altitude. Loveland sits at 4,982 feet, and thin air changes how gas burns. Furnace makers derate gas input by about 4 percent for every 1,000 feet of elevation, so a furnace set up for sea level runs rich up here, soots its heat exchanger, and loses efficiency. Correct high-altitude setup (orifices and pressure settings per the manufacturer's instructions) takes a little extra time on the install, and it is part of doing the job right in Larimer County. It should never show up as a mystery surcharge.
• Ductwork. Leaky or undersized ducts are found on a large share of replacement jobs. Sealing or replacing a bad run adds cost now and fixes comfort problems a new furnace alone cannot. Your quote should name duct work as its own line if it is included.
• Venting and drainage. Moving from an 80% furnace to a condensing model means new PVC vent pipes and a condensate drain or pump. In a basement with a floor drain nearby, that is minor. Across a finished ceiling, it is real labor.
• Electrical and access. Old panels sometimes need a new circuit, and a furnace in a tight crawlspace costs more to swap than one standing in an open basement. Rooftop and attic installs price higher for the same reasons.
• Permits. Loveland and Larimer County require permits on furnace replacements. The fee is modest, the inspection protects you, and your contractor should pull it as part of the job.

Repair or replace? The math we use

Two rules of thumb settle most cases:

The $5,000 rule. Multiply the furnace's age in years by the repair quote. Over $5,000, replacement usually wins; under, repair it. A 14-year-old furnace with a $450 blower repair: 14 times 450 is $6,300, so replacement deserves a hard look. The same repair on a 7-year-old furnace: $3,150, so repair it and move on.

The half-cost rule. If a repair costs more than half the price of a new furnace and the unit is past middle age, the money is better spent on new equipment with a full warranty ahead of it.

One exception overrides both rules: a cracked heat exchanger. That is a carbon monoxide path into your home's air, and it ends the conversation. The furnace gets replaced. Our furnace repair page explains the warning signs.

When replacement is the right call

• Age. Plan around 15 to 20 years for a gas furnace with regular maintenance; the U.S. Department of Energy puts furnace service life in that range and beyond for well-kept equipment (Source: U.S. Department of Energy, energy.gov). Past 15 years, start budgeting so the decision is yours, not the weather's.
• Rising gas bills with no rate increase to explain them. Efficiency slides as heat exchangers foul and blowers wear.
• Frequent repairs. Two breakdowns in two winters is a pattern, not bad luck.
• Uneven heat and constant running. Sometimes that is ductwork, and we check that first. When the ducts are sound, it is the furnace telling you it is tired.
• Noise. Rattles, booms at ignition, and a blower that has gotten loud all point to wear you cannot tune away.

A note on rebates

Xcel Energy, Loveland's natural gas utility, has run rebates on high-efficiency gas furnaces in recent program years, and Loveland Water and Power, the city's own electric utility, has run efficiency rebates on heat pumps. Federal incentives have changed more than once lately. Amounts and eligibility rules change often, so we will not print a dollar figure here that might be stale by the time you read it. Check the current residential rebate listings for your fuel type before you sign a quote, and ask any contractor bidding your job, in writing, which current rebates your chosen equipment qualifies for. We flag them on every estimate we write.

The bottom line

For a typical Loveland home in 2026, budget $4,800 to $9,800 for a furnace replacement, with the efficiency tier and your ductwork deciding where you land. Get the quote in writing, confirm the altitude setup and permit are included, and check Xcel's current rebates before you sign. If your furnace is over 12 years old, the best time to do this homework is fall, before the first cold snap books every crew in town.

When you are ready: furnace installation covers our replacement process step by step, furnace repair covers the fix-it side, and a maintenance plan keeps a new system in warranty shape. Or skip the reading and call (970) 555-0134 or the contact page for a free written estimate.