Furnace replacement in Denver: repair or replace? The furnace’s age, the repair quote and the part that failed usually settle it.
Typical price for a new furnace $6k–$7.8k
Read this first
Before anything else You smell gas Leave now, and don’t touch light switches or the garage door. From outside, call 911, then Xcel Energy at 800-895-2999 .
The CO alarm is going off Get everyone outside into fresh air, then call 911. Don’t go back in until responders say it’s safe.
It was red-tagged Leave it off. A tech or the utility found a safety problem. If none of these apply, it’s a money decision. Start below.
Should you repair or replace your furnace? Multiply the furnace’s age by the repair quote. Over $5,000, a new furnace is usually the better buy.
Supply Intake Exhaust Condensate Gas 1 2 3 4 5 6 7 8 9 1 Inducer2 Heat exchanger3 Burners4 Igniter5 Flame sensor6 Gas valve7 Control board8 Blower9 FilterIgniter The igniter glows hot to light the gas. It wears out, and swapping it is quick and cheap.Repair Close Replace $0 2k 4k 6k 8k 10k $5,000 line 15 × $300 = $4,500
It’s close
It’s close. Get both numbers. Get the repair quote in writing and a replacement price before you approve anything.
ENERGY STAR suggests considering a new furnace once it’s past 15 years old. This repair is 4% of what a new furnace typically costs here. Your repair next to a new furnace
$6k–$7.8k $21k–$28k $300
$0 $5k $10k $15k $20k $25k $30k
Your repair quote New furnace Furnace + heat pump, $14.8k–$18.2k out of pocket
Furnace replacement cost in Denver $6k–$7.8ktypical price
The old furnace comes out and a new one goes in. Your AC and its coil stay if they still work and fit the new cabinet. Efficiency and venting changes move the price most.
Pick this if the AC is under ten years old and cools well.
$14.8k–$18.2kout of pocket for most Xcel gas customers in the Denver metro; $21k–$28k before rebates
A heat pump replaces the AC and heats most of the winter. The furnace covers the coldest days.
Worth it when the AC is old too, or you want to burn less gas.
76% of our customers replacing both systems so far this year chose this one.
Current rebates
Price your replacement from four photos 01 The furnace and the room around it Show the pipes and whatever sits beside it.02 The rating label It’s inside the lower door and gives the model, size and age.03 Where the vent pipes leave Plastic or metal pipe changes the price most.04 The repair ticket The tech’s diagnosis and quote, if you have them.
Recent furnace replacements 
