Furnace Repair in Lehi, UT | Get Matched with Licensed Shops

By the Utah HVAC Connect editorial team · Published October 7, 2026 · Last updated October 7, 2026

TL;DR

Lehi’s 84043 ZIP has about 18,600 owner-occupied homes, and its housing is mixed: 23% built before 2000, 35% in the 2000s, and 42% in 2010 or later (ACS 2020–2024).
That mix means two kinds of furnace calls: repairs on newer systems (ask about warranty first) and repair-or-replace conversations on 2000s-era furnaces.
Lehi has its own city power department. If your electric bill is from Lehi City Power, Rocky Mountain Power’s Wattsmart rebates don’t apply; check Lehi’s rebate page. Gas rebates come from Enbridge Gas ThermWise.
Smell gas? Leave and call 911 or Enbridge Gas at 1-800-767-1689 from outside. For no heat, send a free request and pick “Today.”

Utah HVAC Connect connects Lehi homeowners with licensed Utah HVAC contractors that serve 84043. We’re a matchmaker under Apex Lead Group, LLC, not a contractor: no technicians, no diagnosis, no quotes. This page collects the local facts we think matter before you call a shop.

Lehi has grown fast. Its population reached about 93,080 in 2025, up 22.6% since April 2020, per the Kem C. Gardner Policy Institute’s 2025 subcounty estimates. That growth shows up in the housing data below.

Lehi housing data

Lehi (84043): homes, age, and heating fuel
ZIP	Owner-occupied homes	Median year built	Built before 2000	Built 2000–09	Built 2010 or later	Heat with utility gas
84043 Lehi	18,644 (75%)	2008	23%	35%	42%	82%

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates for ZIP Code Tabulation Areas (tables B25003, B25035, B25034, B25040), via Census Reporter: 84043. ZCTAs approximate USPS ZIP codes. Year-built shares are of all housing units; heating fuel is for occupied homes.

What the numbers suggest for furnace calls

This is general context, not a diagnosis of your furnace:

Homes built in the 2000s (35%) may still have original furnaces that are now roughly 17 to 26 years old. Furnace makers commonly cite a 15-to-20-year typical lifespan (American Standard), so repair-or-replace questions are common here. Our replacement guide lists what to ask.
Homes built in 2010 or later (42%) have furnaces that are often under 16 years old. Before approving a repair on a newer system, ask the shop to check whether the furnace or the failed part is still under manufacturer warranty, and find your registration paperwork if you have it.
82% of occupied homes heat with utility gas, so most no-heat calls in Lehi involve a gas furnace. If you ever smell gas, leave first, then call.

Lehi’s heating season

Utah County winters are close to Salt Lake’s. At the Provo BYU weather station, NOAA’s 1991–2020 normals show about 4,968 heating degree days a year, climbing from 327 in October to 995 in December and 1,007 in January (NOAA monthly normals; annual). Provo is the Utah County station we used, so treat it as a regional guide rather than a reading for your street.

Shops get busiest in December and January. If your furnace is making new noises or short-cycling in October or November, getting it looked at before the first deep cold is easier than finding an opening during it.

Utilities and rebates in Lehi

Electric: Lehi runs its own Power Department. Its energy conservation and rebates page lists rebate information for new air conditioners and points to gas-utility rebates for furnaces. Rocky Mountain Power’s Wattsmart program applies only to Rocky Mountain Power customers, so check whose name is on your electric bill.
Gas: Enbridge Gas ThermWise listed $300 for a 95%–97.4% AFUE gas furnace and $350 for 97.5% AFUE or higher with an ECM blower on October 7, 2026, with the request due within six months of installation (ThermWise).
Federal: the 25C tax credit isn’t allowed for equipment placed in service after December 31, 2025 (IRS).

Permits in Lehi

Lehi’s Building and Inspections Department issues building permits in the city through its online portal and schedules inspections by phone. A furnace or AC replacement normally needs a permit. Ask your contractor whether the permit is included and who schedules the inspection.

Check the license before work starts

Before anyone works on your system, look the company up on DOPL’s free Licensee Lookup & Verification. You want an Active status and an HVAC classification (H100, or the older S350), under the same business name that’s on your estimate. Step-by-step: how to check a Utah HVAC license.

How matching works

Tell us what you need on the free Get Help form: service type (Repair, Replace, Install, Tune-up, or “I’m not sure”), urgency (Today, This week, or Planning), your ZIP, and when it’s reasonable to reach you.
We match licensed Utah shops that serve your ZIP. We don’t dispatch technicians, diagnose, or write proposals.
Matched pros may reach out using the contact details you provide. You talk with them, compare, and hire who you want, or no one. No homeowner fee and no obligation. More: how it works and how we make money.

Get Help →

Guides for Lehi homeowners

No heat or furnace not working: safety first, the basic checks furnace makers list, and what to tell a shop
Furnace replacement in Utah: repair-or-replace questions, what drives a bid, rebates, permits
AC and heat pump replacement: replace the AC only, dual fuel, or all-electric

Nearby: American Fork (84003) · Draper & Sandy · Riverton & Herriman

How we put this page together

This page was written by the Utah HVAC Connect editorial team, not by a contractor. We used public data only: NOAA 1991–2020 climate normals, U.S. Census Bureau American Community Survey (ACS) estimates, and the rebate, permit, and licensing pages published by Utah utilities, cities, and DOPL, each checked on the date shown above. For this page we also pulled ZIP-level housing data and checked the city’s own building and utility pages. We don’t publish prices we can’t source, contractors can’t pay to be mentioned here, and we don’t name partner shops on this page. Programs and rules change, so confirm details with the program or your contractor before you sign anything. See our editorial policy. Spot an error? Email hello@lendifi.io.

Sources

Questions about the service: hello@lendifi.io.

FAQ

Who do I contact when my furnace stops working in Lehi?

A licensed HVAC contractor. You can call one directly or send us a free request and pick “Today”; licensed shops that serve 84043 may reach out. If you smell gas or a carbon monoxide alarm sounds, leave the home and call 911 or Enbridge Gas at 1-800-767-1689 first.

Is my Lehi home on Rocky Mountain Power or Lehi City Power?

Check the name on your electric bill. Lehi runs its own Power Department, which lists its own rebate information, including for new air conditioners. Wattsmart rebates are only for Rocky Mountain Power customers. Gas rebates come from Enbridge Gas ThermWise either way.

My Lehi home was built after 2010. Should I repair or replace the furnace?

Age alone doesn’t decide it, and we don’t make that call. On a newer system, ask the shop whether the furnace or the failed part is still under manufacturer warranty before you approve a repair.

Do I need a permit for furnace work in Lehi?

A furnace replacement normally needs a permit through Lehi’s Building and Inspections Department. Ask your contractor whether your job needs one and whether it’s included in the bid.

Do you cover Saratoga Springs, Eagle Mountain, or Highland?

Our focus is Salt Lake and Utah counties. Enter your ZIP on the Get Help form; matching depends on licensed shops that serve your ZIP.

Is the request free, and do you send the technician?

The request is free for homeowners with no obligation to hire. We don’t send technicians or quote; we’re a matchmaker that connects you with licensed Utah HVAC shops that serve your ZIP. Contractors who receive leads pay us.

Furnace repair in Lehi (84043): get matched with licensed Utah shops