Lehi City Power vs Rocky Mountain Power: which HVAC rebates apply to your home

By the Utah HVAC Connect editorial team · Published October 12, 2026 · Last updated October 12, 2026

Most Utah homeowners have one electric utility and one gas utility, and the rebate question is simple. Lehi is different. The city runs its own electric utility, Lehi City Power, but Rocky Mountain Power also serves some addresses inside city limits. Which one you have decides which electric rebates you can count on when you replace an AC or add a heat pump. This guide sorts it out using only what each utility publishes.

Utah HVAC Connect is a matchmaker under Apex Lead Group, LLC. We connect Lehi homeowners with licensed Utah HVAC contractors. We don’t sell equipment, install, or quote, and we don’t process rebates.

Step 1: which electric utility serves your home?

Look at the name on your electric bill. That’s the only reliable test we found.

• Lehi City Power is the city’s municipal electric department (560 West Glen Carter Drive; 385.201.1000) (Lehi City Power).
• Rocky Mountain Power serves certain customers inside Lehi’s boundaries. In a 2015 filing with the Utah Public Service Commission, RMP described an agreement under which Lehi City consents to RMP serving “certain Additional Customer(s)” within the city, customers located nearer to RMP’s distribution lines than to Lehi City’s (RMP application, 2015). RMP filed an amendment to that agreement in June 2024 (PSC docket 24-035-32) (PSC notice, 2024).
• There’s no public address list. The 2015 filing says the customer list is in a confidential appendix with proprietary customer information. We didn’t find a public service-area map that shows the split street by street, so we won’t guess at a boundary. Your bill, or a call to Lehi Power, settles it.

If your bill says Lehi City Power

Lehi’s Energy Conservation & Rebates page (checked October 12, 2026) has three rebate lines, each linking to another site (Lehi City):

• “Rebate information for purchasing new clothes washers, dish washers, freezers, refrigerators, electric water heaters, lighting fixtures, portable evaporative coolers, and room air conditioners” links to UAMPS Smart Energy, the efficiency program of the Utah Associated Municipal Power Systems.
• “Rebate information for purchasing new air conditioners” links to the ThermWise appliance-rebates page (Enbridge Gas).
• “Rebate information for clothes washers, gas water heaters, furnaces, and fireplaces” links to the same ThermWise page.

Three things to know before you count on an electric rebate:

1. The Lehi page doesn’t list dollar amounts. It only points elsewhere.
2. UAMPS says participation varies. Its Smart Energy page describes heating and cooling incentives (central air conditioning, heat pumps, ductless heat pumps, gas furnaces, smart thermostats) but says incentives are offered through your local member utility, that “participation differs by measure and by city,” and that you should confirm with your utility before buying (UAMPS Smart Energy). Lehi’s page doesn’t say which of those HVAC measures Lehi offers.
3. The “new air conditioners” link goes to a gas program. On October 12, 2026, the ThermWise page’s heating and cooling section listed gas furnaces, dual-fuel heat pump systems, boilers, and other gas equipment, but no rebate for a standalone central AC (ThermWise). A dual-fuel heat pump paired with a qualifying gas furnace can qualify there.

Bottom line for Lehi City Power customers: before you sign for a new AC or heat pump, call Lehi Power at 385.201.1000 and ask whether a central AC or heat pump rebate is available to you and how to apply. Don’t assume Rocky Mountain Power’s Wattsmart rebates apply. They’re for RMP customers only.

If your bill says Rocky Mountain Power

Wattsmart’s Utah rebates are for customers who buy electricity from Rocky Mountain Power on approved rate schedules, in an existing single-family home (not new construction or manufactured homes), with work done by a program-participating contractor and the application submitted within 180 days (Wattsmart dual fuel). As listed on October 12, 2026:

• Dual-fuel heat pump: $1,450 for an AHRI-rated system (8.5 HSPF2 / 15.2 SEER2 with at least an 80 AFUE furnace, or 7.5 HSPF2 / 14.3 SEER2 with at least a 90 AFUE furnace); $700 for a non-AHRI-rated system (Wattsmart).
• Air-source heat pump: $450 to upgrade an existing heat pump to a cold-climate model, or $1,200–$1,600 to convert from electric resistance heat. Converting from gas doesn’t qualify (Wattsmart). Most Lehi homes heat with gas (82% of occupied homes in 84043, per the ACS), so dual fuel is the Wattsmart path that usually fits.

Gas rebates apply either way

Your gas utility is separate from your electric utility. Lehi’s own rebate page sends furnace rebates to ThermWise. As listed on October 12, 2026 (ThermWise):

• Gas furnace, 95%–97.4% AFUE: $300; 97.5% AFUE or higher with an ECM: $350
• Dual-fuel heating system: $700 (Tier 1, gas backup already installed), $1,000 (Tier 1, newly installed gas backup), $850 (Tier 2, existing backup), or $1,200 (Tier 2, new backup), with a changeover setpoint of 40°F or lower

The federal 25C tax credit isn’t allowed for equipment placed in service after December 31, 2025 (IRS).

Side by side

Sources: Lehi City, Energy Conservation & Rebates, Wattsmart dual fuel (UT), Wattsmart air source heat pumps (UT), ThermWise appliance rebates. Wattsmart says its rebates can change with 45 days’ notice. Amounts are rebates as listed by each program, not equipment or install prices.

Questions to ask every bidder in Lehi

• “Which electric utility do you see on my account, and which rebates are you counting on?” A bid built around Wattsmart doesn’t help a Lehi City Power customer.
• “Who files each rebate, and by when?” Wattsmart needs a participating contractor and an application within 180 days. ThermWise has its own deadline, so ask.
• “Is this an AHRI-matched system?” That certificate decides between Wattsmart’s $1,450 and $700 dual-fuel tiers.
• “What’s the heat pump’s changeover temperature?” ThermWise’s dual-fuel rebate needs 40°F or lower.
• “Is the city permit in the bid?” Lehi’s Building and Inspections Department issues permits (Lehi City).

For the bigger choice between replacing the AC only, going dual fuel, or going all-electric, see our AC and heat pump replacement guide.

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Related guides

• AC and heat pump replacement in Utah: AC-only, dual fuel, or all-electric, plus 2026 rebates
• Furnace repair in Lehi (84043): local housing data, permits, and a free match
• Why is my furnace blowing cold air?
• Furnace replacement in Utah: rebates, permits, and questions to ask

Sources

1. Lehi City Power, Energy Conservation & Rebates (checked Oct 12, 2026)
2. Lehi City, Power Department
3. Rocky Mountain Power, application for approval of electric service agreement with Lehi City (Utah PSC, 2015)
4. Utah PSC, Docket 24-035-32 notice of filing: amendment to RMP electric service agreement with Lehi (June 11, 2024)
5. UAMPS, Smart Energy programs
6. Rocky Mountain Power, Wattsmart dual fuel heat pumps (UT)
7. Rocky Mountain Power, Wattsmart air source heat pumps (UT)
8. Enbridge Gas, ThermWise appliance rebates
9. U.S. Census Bureau, ACS 2020–2024 5-year, ZCTA 84043 (heating fuel), via Census Reporter
10. IRS, FAQs on 25C under Public Law 119-21
11. Lehi City, Building and Inspections

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