Intermountain Gas Company customers, Idaho · Rebate
Residential Appliance Rebates (Intermountain Gas)
Run by Intermountain Gas Company
Intermountain Gas customers in Idaho get $275 for a 95% AFUE gas furnace, $325 for a .91 UEF tankless water heater and $800 for a 95% AFUE boiler or combination boiler, in homes heated only with natural gas.
Amounts
How much you get
A set rebate per qualifying appliance, one per equipment type per home, not to exceed the price paid for the equipment and installation. The amount depends on which of these fits your install.
| What you install | You get |
|---|---|
| 95% AFUEGas furnace | $275 |
| .91 UEFTankless water heater | $325 |
| 95% AFUEGas boiler | $800 |
| 95% AFUECombination boiler for space and water heat | $800 |
Eligibility
Do I qualify?
You need to meet all 3 of these.
Residential Intermountain Gas customer on the residential rate schedule (RS) in Idaho.
For furnace and boiler rebates the home must be heated only with Intermountain natural gas; an electric heat pump, if present, must be wired to "Cool Only". For the water heater rebate the home must heat water only with natural gas.
New equipment meeting the minimum efficiency, installed to code with a signed, approved permit, by a licensed and bonded contractor or self-installed. One rebate per equipment type per home.
Equipment
What equipment counts
The program sets these minimums for furnaces, ac and thermostats and water heaters.
- Furnaces
95% AFUE.
- Boilers
95% AFUE (boiler or combination boiler).
- Water heaters
Tankless water heater, .91 UEF.
Applying
How to apply
Within 90 days of equipment installation.
- Check the equipment before you buy.
It must meet the minimum efficiency (95% AFUE furnace or boiler, .91 UEF tankless). Call 1-800-548-3679 before installation if unsure.
- Have the equipment installed with a permit.
By a licensed and bonded contractor, or self-install with receipts and photos of the equipment sticker.
- Apply within 90 days of installation.
Online from your Intermountain Gas account, or email or mail the application with the final invoice and permit number.
- Receive the rebate check.
By mail, about 6 to 8 weeks after approval.
Final invoice with installation date, cost, brand, model number and serial number
Permit number for the installed equipment
For self-installs, purchase receipt and photos of the equipment's brand, model and serial number
Forms and instructions, including for applying by mailIntermountain Gas - Residential Rebate Terms and Conditions · Intermountain Gas Residential Energy Efficiency Rebate Application - Existing Homes (Ver 01.01.26.R) · Intermountain Gas Rate Schedule EE-RS, Residential Energy Efficiency Rebate Program (effective March 1, 2026)
Questions about applying1-800-548-3679 or saveenergy@intgas.com
Stacking
Use it with
Your address
Next steps
Check that it covers your address. Then, if you want, ask for a contractor quote.
Is it available at your address?
Before anything else
Your quote request is in If a contractor we work with serves your ZIP, they can contact you. We take one request per person; contact us to change it.
Get an email if this program changes
We'll write if its amount, status or deadline changes. Nothing else.
FAQ
Questions
How much does Residential Appliance Rebates (Intermountain Gas) pay?
$275 to $800, depending on what you install. The table under How much you get lists each amount.
Do I need to be a Intermountain Gas Company customer?
Yes. It’s only for homes in Intermountain Gas Company customers, Idaho. See Do I qualify for the details.
What’s the deadline?
No fixed deadline. Apply any time while it’s open.
Is it still available?
Yes. It was open when we last checked, on October 27, 2026.
Do I have to buy a specific brand to get the rebate?
No. Any brand qualifies as long as the equipment meets the minimum efficiency.
Can I get the rebate if I also have an electric heat pump?
Only if the heat pump is wired to "Cool Only". Homes heated by both natural gas and an electric heat pump don't qualify for the heating equipment rebates, even with the gas furnace as backup.
Can I install the equipment myself?
Yes. Self-installs qualify with purchase receipts and photos of the equipment sticker showing brand, model and serial number; a permit and inspection are still required.
Plain words
Words used on this page
- UEF
- A water heater’s efficiency rating. Higher is better.
References
Sources
This page is built from these official pages, run by the program itself.
- Intermountain Gas - Appliance Rebates
- Intermountain Gas - Residential Rebate Terms and Conditions
- Intermountain Gas Residential Energy Efficiency Rebate Application - Existing Homes (Ver 01.01.26.R)
- Intermountain Gas Rate Schedule EE-RS, Residential Energy Efficiency Rebate Program (effective March 1, 2026)
When one of these pages changes, we re-check this page against it.
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