Furnace Repair
FURNACE REPAIR IN SALT LAKE CITY — EVERY VINTAGE
Flame sensor on a 2018 Lennox in Federal Heights. Thermocouple on a 1985 Coleman in Sugar House. Octopus gravity furnace acting up in an Avenues bungalow. Our SLC techs carry parts for every era and brand.
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24/7 Emergency
60–90 min dispatch
Licensed & insured
Utah plumbing contractor
5 Utah counties
50+ cities served
Flat-rate pricing
Quoted before we start
Overview
What fails on SLC furnaces — and what it costs
Most furnace repair calls in Salt Lake City come down to the same half-dozen failures — flame sensor, ignitor, blower motor, pressure switch, gas valve, or control board. What's different about SLC compared to West Jordan or Lehi is the equipment vintage. Our techs are working on furnaces ranging from a 1962 Coleman gravity octopus in a Marmalade basement to a 2024 Trane XV20 in a Federal Heights remodel — sometimes in the same day. We carry parts for both ends of the spectrum on the truck because that's what SLC actually needs.
SLC winters punish furnaces in a specific way. Single-digit January nights run gas burners at max output for weeks. Inversion days drop indoor air quality and make combustion incomplete on marginally-tuned units. Cold cycles between 8°F nights and 50°F sunny afternoons stress every welded joint. Older homes with leaky ductwork run furnaces longer than they should. Sooty flame sensors, stuck pressure switches, and cracked heat exchangers from thermal cycling are the patterns we see most.
The six most common calls
- Flame sensor cleaning or replacement — $145–$245, usually 30 minutes
- Hot surface ignitor replacement — $245–$395
- Pressure switch — $285–$485
- Gas valve — $385–$685
- Blower motor — $485–$925 (ECM pricier than PSC)
- Control board — $385–$825
Plus a few SLC specialties: thermocouples on 1980s-1990s standing-pilot units common in old homes ($145-$285), pilot assemblies on the same era ($185-$385), and limit switches on overheated octopus and atmospheric units ($245-$485).
What Valley does differently in SLC
Every truck carries common repair parts plus the older-equipment parts we know we'll need on this side of the valley — thermocouples, pilot assemblies, vintage gas valve kits. When we diagnose, we show you the part that failed and explain what it does. If you're hovering near end-of-life (15-20 years on a gas furnace, longer on octopus units), we give honest repair-vs-replace math before you sink $800 into a unit with two winters left. Common conversation in SLC because of the older equipment cohort.
Winter emergencies get priority. Below 20°F overnight, a failed furnace means frozen pipes in 4-6 hours, especially in old SLC homes with galvanized supply on exterior walls. Quality Service Club HVAC members skip the dispatch queue on hard-freeze nights — material on the coldest 3-4 nights every winter.
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Same-day furnace repair quote in SLC
Tell us what's happening and your neighborhood. We'll call back fast and often diagnose over the phone before dispatching.
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Warning signs
Signs Your Furnace Needs Attention
Most failures announce themselves before the full breakdown. If you're hearing or seeing any of these, get it looked at before it dies in January.
Furnace blows cold air or lukewarm instead of hot
Short cycling — runs 2-5 minutes then shuts off, repeats
Thermostat is calling for heat but furnace isn't responding
Pilot light (older units common in SLC) keeps going out
Clicking or rumbling from the burner area
Strange smells — electrical burning, gas, or musty
Yellow flame color instead of blue (carbon monoxide risk)
Higher gas bills with no change in thermostat setting
House has uneven heating — top floor of an Avenues home cold while basement runs hot
Octopus furnace making unfamiliar noises
Below zero
No heat on a 10°F SLC night? Don't wait.
Below 20°F overnight, a dead furnace turns into frozen galvanized pipes in 4-6 hours — especially in pre-1950 Avenues and Sugar House homes. Call right away — 60-90 minute emergency dispatch from our Marmalade shop, 24/7 all winter.
Winter emergency
60min
Across Salt Lake, Utah, Davis, Weber, and Tooele counties.
The Process
How a Furnace Repair Call Goes in SLC
On the truck
Cable machine, jetter, and pipe camera — every call.
Phone triage
We ask the symptom, model if you have it, age of the unit, and the neighborhood. Half the time the diagnosis is 80% locked before we dispatch. SLC dispatch routes from our shop at 244 W 300 N — Avenues 5 minutes, Sugar House and Liberty Wells 10-15.
Full-system diagnostic
Tech tests ignition sequence, gas pressure, flame rectification, pressure switch, blower amperage, heat exchanger visual, thermostat call. Walk-through before any quoting. On older equipment we check more — pilot assembly, thermocouple, atmospheric draft, chimney condition.
Honest quote
Flat-rate for the repair, given upfront. If your system is 20+ years old and we're quoting $900, we do the replacement math before you authorize. Common conversation in SLC because of the older equipment cohort here.
Same-visit fix when possible
Most common parts on the truck — modern AND vintage. Control boards for less-common brands occasionally need next-day order.
Safety check before we leave
CO test at every register, flame color check, combustion analysis on newer units, atmospheric draft check on older units. Not optional — we don't leave with an unsafe unit running.
Pricing
Furnace Repair Cost in Salt Lake City
Flat-rate, quoted before repair. Winter emergency after-hours adds $95-$150.
Furnace diagnostic / service call
Low
$89
High
$129
Member
$76
– $110
Waived if you do the repair
Flame sensor clean or replace
Low
$145
High
$245
Member
$123
– $208
Most common single-symptom fix
Hot surface ignitor replacement
Low
$245
High
$395
Member
$208
– $336
When furnace tries to start, clicks, but doesn't light
Pressure switch
Low
$285
High
$485
Member
$242
– $412
Common after 5-7 years of use
Gas valve
Low
$385
High
$685
Member
$327
– $582
No gas flow, or intermittent flame
Blower motor (ECM or PSC)
Low
$485
High
$925
Member
$412
– $786
Depends on motor type and drive
Control board
Low
$385
High
$825
Member
$327
– $701
Intermittent failures, strange behavior
Draft inducer motor
Low
$385
High
$685
Member
$327
– $582
Venting failure, lockouts
Thermocouple replacement (older standing-pilot)
Low
$145
High
$285
Member
$123
– $242
Common on 1980s-1990s SLC home furnaces
Pilot assembly (older units)
Low
$185
High
$385
Member
$157
– $327
Common SLC repair on older equipment
Heat exchanger replacement
Low
$1,200
High
$2,400
Member
$1,020
– $2,040
Usually a 'replace the whole furnace' decision
Thermostat replacement
Low
$185
High
$625
Member
$157
– $531
Standard to smart thermostats
Member pricing reflects the Quality Service Club 15% repair discount. Service call fees are separate.
2026 Salt Lake City residential pricing. Commercial and high-efficiency boilers priced separately.
Quality Service Club
Skip the bill. Skip the line.
For $79 a year, members get 15% off every repair, priority dispatch on every call, and a free annual drain and plumbing inspection — the same stuff we'd charge $195 for on a cold call.
- 15% off repairs
- Priority dispatch
- Annual inspection
- 24/7 service access
- $25 referral bonus
- Parts + labor warranty
Plumbing
$79/year
- 15% off all plumbing repairs
- Priority dispatch — skip the line
- Annual drain piping inspection
- Full home water-supply inspection
- Tag on your emergency shut-off
- $25 referral bonus
HVAC (1 unit)
$199/year
- 15% off HVAC repairs
- Priority dispatch on furnace or AC calls
- Annual furnace + AC safety inspection
- Thermostat calibration and battery swap
- Outdoor condenser cleaning check
Plumbing + HVAC
$258/year
- Everything in both plans
- Whole-home annual inspection
- 15% off every service we offer
- Priority dispatch across plumbing and HVAC
Questions? Talk to a real human — (801) 341-4222
Cancel anytime. 1-year minimum.
FAQ
Furnace Repair FAQs in Salt Lake City
Service call $89-$129 (waived with repair). Most actual repairs fall between $145 (flame sensor clean) and $925 (blower motor replace). Control boards and gas valves $385-$825 range. Thermocouples and pilot assemblies on older units $145-$385. We quote flat-rate before parts come off the truck.
Related services
Related Heating Services in Salt Lake City
Emergency Furnace Repair
No heat after hours — 60-90 min dispatch from our Marmalade shop, 24/7 winter crews.
Furnace Installation
Octopus replacements and high-efficiency upgrades — permit, 10-year warranty, financing.
Furnace Maintenance & Tune-Up
Pre-winter annual — included in Quality Service Club HVAC membership.
Thermostat Installation
Smart thermostats, multi-stage, and dual-fuel setups.
Heat Pump Services
Electric heat pump install and repair — good dual-fuel pairing.
Available Around the Clock
Emergency?
We answer 24/7.
Burst pipe, no heat, AC down? Real plumbers pick up — no answering machines. Valley Plumbing serves Salt Lake City and surrounding areas any time, day or night.
Licensed & Insured — Utah Plumbing Contractor