How much is the Efficiency Works rebate for a heat pump?

Cold climate ducted: $2,000 per unit (flat). Mini-splits: $500/ton, or $1,000/ton if replacing electric baseboard. Standard ducted: $1,500 per unit. These are Efficiency Works amounts only; additional programs stack on top.

What's the difference between Tier 1 and Tier 2?

Tier 2 is cold climate certified: changeover temperature at 5°F or below, sized for your heating load. Tier 1 has a changeover at 35°F and is sized for cooling. In Colorado, Tier 2 is what makes sense. It gets a higher rebate ($2,000 vs $1,500) and qualifies for better stacking with HEAR.

Can I combine Efficiency Works rebates with Xcel?

Potentially. Most Longmont homes have Longmont Power for electric and Xcel for gas. If you have Xcel gas service, you may qualify for Xcel rebates in addition to Efficiency Works. We check both programs when we quote your system.

Is the rental property bonus available in Longmont?

No. The Efficiency Works rental property double-rebate is available for Fort Collins Utilities customers only. Longmont Power customers get the standard rebate amounts on this page.

Can I get the bundling bonus with a heat pump water heater?

No. The $2,000 bundling bonus applies to air source and ground source heat pumps combined with an envelope measure. Heat pump water heaters are excluded from the bundling bonus.

Who handles the paperwork?

UniColorado handles all Efficiency Works applications. The application must be submitted within 45 days of project completion by a listed service provider.

Available Now

Longmont Power Heat Pump Rebates (2026)

Q: Do I need pre-approval?

If your total Efficiency Works incentives exceed $2,500, yes. Without it, your incentive is capped at $2,500. Most cold climate installations will exceed this threshold. We handle the pre-approval process before starting work.

Longmont Power & Communications customers get heat pump rebates through Efficiency Works. Cold climate ducted systems: $2,000. Non-ducted mini-splits: $500-$1,000/ton. Plus a $2,000 bundling bonus when you add insulation or air sealing.

Updated February 9, 2026•By Editorial Staff

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Up To

$4,000

Stack with other rebate programs for even greater savings on your heat pump installation.

Blue^TM

AI Summary

Pre-approval required for projects over $2,500 in total incentives; apply before work begins. UniColorado handles Efficiency Works paperwork. If you have Xcel gas service, we stack both. Application within 45 days of completion.

Status

Available Now

Cold Climate Ducted

$2,000/unit

Bundling Bonus

$2,000

Pre-Approval

Required Over $2,500

Efficiency Works Heat Pump Rebates

Longmont Power & Communications customers get heat pump rebates through Efficiency Works.Cold climate ducted systems: $2,000. Non-ducted mini-splits: $500-$1,000/ton. Plus a $2,000 bundling bonus when you add insulation or air sealing.

At UniColorado, we handle all Efficiency Works rebate paperwork. If you also have Xcel gas service, we stack those rebates too.

Who Qualifies?

You qualify if

Longmont Power & Communications residential customer

Home at least one year old

New equipment only

Installed by Efficiency Works listed provider

Application within 45 days of completion

Not eligible if

New construction

Used or refurbished equipment

Non-Longmont Power customers

Efficiency Works Heat Pump Rebate Amounts

Ducted Heat Pumps

Tier: Tier 1 (standard)
Rebate: $1,500 per unit
Efficiency Requirements: 15.2 SEER2, 7.8 HSPF2. Changeover ≤35°F. 100% design cooling. AHRI matched.

Tier: Tier 2 (cold climate)
Rebate: $2,000 per unit
Efficiency Requirements: 15.2 SEER2, 8.1 HSPF2. Changeover ≤5°F. 100% design heating. Cold climate certified.

Tier	Rebate	Efficiency Requirements
Tier 1 (standard)	$1,500 per unit	15.2 SEER2, 7.8 HSPF2. Changeover ≤35°F. 100% design cooling. AHRI matched.
Tier 2 (cold climate)	$2,000 per unit	15.2 SEER2, 8.1 HSPF2. Changeover ≤5°F. 100% design heating. Cold climate certified.

Tier 2 is what you want in Colorado. The cold climate certification means the unit maintains at least 70% of rated heating capacity at 5°F. Our top-recommended brands (Mitsubishi, Bosch, Carrier) all have models that qualify.

Note: ducted rebates are per unit (flat amount), not per ton.

Mini-Splits (Non-Ducted)

System: Cold climate mini-split
Rebate: $500/ton
Requirements: 21.0 SEER2, 9.5 HSPF2. Cold climate certified (NEEP, CEE, AHRI, or ENERGY STAR).

System: Replacing electric baseboard
Rebate: $1,000/ton
Requirements: Same specs. Must fully remove existing baseboard heat.

System	Rebate	Requirements
Cold climate mini-split	$500/ton	21.0 SEER2, 9.5 HSPF2. Cold climate certified (NEEP, CEE, AHRI, or ENERGY STAR).
Replacing electric baseboard	$1,000/ton	Same specs. Must fully remove existing baseboard heat.

A 2-ton mini-split system = $1,000. A 3-ton = $1,500. Double that if you're replacing electric baseboard.

Heat Pump Water Heaters

Replacing: Electric or propane water heater
Rebate: $600

Replacing: Natural gas water heater
Rebate: $400

Replacing	Rebate
Electric or propane water heater	$600
Natural gas water heater	$400

Must be ENERGY STAR certified.

Panel Upgrade and Load Sharing

Measure: Service panel upgrade (200A+)
Rebate: $500
Requirements: Must be part of a project that includes a heat pump, HPWH, induction range, EV charger, or solar. Licensed electrician.

Measure: Load sharing device
Rebate: $250
Requirements: Existing panel under 200A. UL-listed device. Same qualifying project requirement.

Measure	Rebate	Requirements
Service panel upgrade (200A+)	$500	Must be part of a project that includes a heat pump, HPWH, induction range, EV charger, or solar. Licensed electrician.
Load sharing device	$250	Existing panel under 200A. UL-listed device. Same qualifying project requirement.

$2,000 Bundling Bonus

Complete a heat pump installation AND one envelope measure within six months and Efficiency Works adds $2,000 on top.

Qualifying envelope measures:

Air sealing (minimum Tier 1, >15% reduction)
Windows and sliding glass doors
Doors

The bonus does not apply to heat pump water heaters. Total rebates + bonus cannot exceed the combined project cost.

Pre-Approval Required Over $2,500

If your total Efficiency Works incentives exceed $2,500, you must get pre-approval before work begins. Without pre-approval, your total incentive is capped at $2,500.

Most cold climate installations will exceed this. A Tier 2 ducted ($2,000) plus bundling bonus ($2,000) = $4,000. We handle the pre-approval process.

How the Rebate Works

Get Your Quote

Rebate shown as line item on estimate

Pre-Approval (If Over $2,500)

We submit pre-approval before work begins

Installation

We complete the heat pump installation

Submit Application

We submit to Efficiency Works within 45 days

UniColorado handles all Efficiency Works paperwork. You don't apply yourself.

Stack With Other Programs

Longmont Power customers can combine Efficiency Works rebates with state programs. If you also have Xcel gas service (most Longmont homes do), you may qualify for Xcel rebates too.

Program: Efficiency Works
Amount: $1,500-$2,000 (ducted)
Who Qualifies: Longmont Power customers

Program: HEAR
Amount: Up to $8,000
Who Qualifies: Households under 150% AMI

Program: CO State Tax Credit
Amount: $1,000
Who Qualifies: All Colorado residents

Program: Xcel Energy (if you have Xcel gas)
Amount: Varies
Who Qualifies: Xcel gas or electric customers

Program	Amount	Who Qualifies
Efficiency Works	$1,500-$2,000 (ducted)	Longmont Power customers
HEAR	Up to $8,000	Households under 150% AMI
CO State Tax Credit	$1,000	All Colorado residents
Xcel Energy (if you have Xcel gas)	Varies	Xcel gas or electric customers

Stacking Example: Cold Climate Ducted (Tier 2), Income-Qualified

Rebate: Efficiency Works (Tier 2 ducted)
Amount: $2,000

Rebate: Bundling bonus (HP + air sealing)
Amount: $2,000

Rebate: HEAR (under 150% AMI)
Amount: $8,000

Rebate: CO state tax credit
Amount: $1,000

Rebate: Total
Amount: $13,000

Rebate	Amount
Efficiency Works (Tier 2 ducted)	$2,000
Bundling bonus (HP + air sealing)	$2,000
HEAR (under 150% AMI)	$8,000
CO state tax credit	$1,000
Total	$13,000

That's before any Xcel gas rebates, which could add more.

Cost Ranges Before and After Rebates

System Type: Cold Climate Ducted (Tier 2)
Before Rebates: $11,200-$26,500
After EW Only: $9,200-$24,500
After Stacking (income-qualified): $3,200-$15,500

System Type: Cold Climate Mini-Split (3-ton)
Before Rebates: $5,800-$27,100
After EW Only: $4,300-$25,600
After Stacking (income-qualified): Under $5,000-$16,600

System Type: Heat Pump Water Heater
Before Rebates: $3,500-$6,500
After EW Only: $2,900-$5,900
After Stacking (income-qualified): $1,150-$4,150

System Type	Before Rebates	After EW Only	After Stacking (income-qualified)
Cold Climate Ducted (Tier 2)	$11,200-$26,500	$9,200-$24,500	$3,200-$15,500
Cold Climate Mini-Split (3-ton)	$5,800-$27,100	$4,300-$25,600	Under $5,000-$16,600
Heat Pump Water Heater	$3,500-$6,500	$2,900-$5,900	$1,150-$4,150