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Montana Heat Pump Quote Checker

What to look for — and what to question — when reviewing a Montana heat pump quote that includes NorthWestern Energy Efficiency Plus (E+) rebates.

High confidenceLast checked: 2026-05-283 official sources
Quick Answer

What should I check in a Montana heat pump quote before signing?

Before signing a Montana heat pump quote, verify: (1) the equipment certification number, (2) your specific utility and fuel type are listed, (3) the rebate source is explicitly named as NorthWestern Energy Efficiency Plus (E+) (not a generic estimate), (4) the rebate and any tax credit are shown as separate line items with separate conditions, and (5) a home energy assessment has been confirmed if required by the program. Any quote that cannot answer these clearly is a red flag.

See all quote red flags

What must be in a Montana heat pump quote

The equipment model name and AHRI reference number (or program-specific certification number).
Your specific electric utility and your current heating fuel — these determine the NorthWestern Energy Efficiency Plus (E+) rebate tier.
The rebate amount cited specifically as a NorthWestern Energy Efficiency Plus (E+) rebate, not a generic estimate.
A statement of whether this is a whole-home or partial installation, which affects rebate eligibility.
Any home energy assessment requirement — if required, it must be scheduled before work begins.
Savings assumptions documented: current fuel cost, projected electricity rate, and system efficiency.
A clear separation of the rebate (cost at installation) vs. any tax credit (credit at tax time).
Permit and electrical work costs included (or explicitly excluded with explanation).

Critical red flags

Contractor claims a specific rebate dollar amount but cannot name the program, your utility, or the equipment certification number.
Quote presents "after-rebate" or "after-incentive" cost without confirming rebate eligibility in writing.
Rebate estimate shown before a home energy assessment has been scheduled (when required).

Serious concerns

Savings claim does not specify current fuel price, projected electricity rate, or assumed system efficiency rating.
"Net cost" figure combines a rebate (cost reduction at installation) with a tax credit (tax reduction at filing) as if both are guaranteed.
Contractor cannot provide the AHRI reference number for the proposed equipment.

Worth watching

Monthly loan payment is presented as equivalent to monthly savings, without disclosing APR or full loan cost.
Heat pump proposed for a home with obvious insulation gaps, with no mention of weatherization requirements.
Quote includes "estimated" solar savings stacked on top of heat pump savings, without a separate solar proposal.

Questions to ask your contractor

1.What is the AHRI reference number for the proposed equipment?
2.Which specific NorthWestern Energy Efficiency Plus (E+) rebate tier and dollar amount does this installation qualify for?
3.Is a home energy assessment required for this rebate, and has one been scheduled?
4.Will the rebate be applied at installation or submitted after?
5.What insulation or weatherization work is required by the program before this rebate is approved?
6.What assumptions did you use to calculate the projected annual savings?
Frequently Asked Questions

What should be included in a Montana heat pump quote?

A Montana heat pump quote should include: the equipment model and AHRI certification number, your specific utility and current heating fuel, whether the rebate is for whole-home or partial installation, the specific NorthWestern Energy Efficiency Plus (E+) rebate amount and tier, and a clear breakdown of any savings claims by source.

How do I verify a Montana heat pump rebate claim?

Confirm your utility participates in NorthWestern Energy Efficiency Plus (E+). Ask for the AHRI reference number and look it up. Call your utility or visit NorthWestern Energy Efficiency Plus (E+) directly to confirm the rebate tier. Do not treat any estimate as confirmed until you have official program documentation.

This tool is informational and does not constitute legal, financial, or tax advice. Analysis is based on publicly available program guidelines. Verify current rebate amounts and eligibility requirements with NorthWestern Energy Efficiency Plus (E+) or your utility before making any purchase decision.
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Official Sources
2026-05-28
2026-05-28
2026-05-28