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Existing Multifamily Buildings (Washington)

Increasing energy efficiency in multifamily properties can reduce operating expenses, raise tenant satisfaction and improve building marketability. Energy Trust offers cash incentives for energy-efficient equipment and retrofits at existing multifamily properties with two or more units. When you install energy-efficient equipment, you’ll see savings that can help your building stand out in a competitive market and contribute to tenant comfort and lower energy bills.

Incentives are available for commercial firm and interruptible sales customers served on rate schedules 1, 3, 41 and 42.

Project Examples

Existing Multifamily Buildings (Washington)

Apartment Building

Project Type: Tank Water Heaters
Project Cost: $158,200
Incentive: $5,000
Annual Savings: 4,400 therms

Existing Multifamily Buildings (Washington)

Apartment Building

Project Type: Boilers
Project Cost: $37,700
Incentive: $5,700
Annual Savings: 2,300 therms

  1. Check your eligibility.

    Read More >

    Energy Trust provides cash incentives to businesses for energy-efficiency and renewable energy projects. To qualify, you must:

    • Have a commercial, industrial or institutional facility project site in Washington served by
      NW Natural. Washington customers are eligible for gas incentives only. Additional requirements may apply.
    • Be improving an existing structure.
  2. Find a trade ally contractor.

    We can help you get started.

  3. Install equipment that meets the requirements listed in the Washington Existing Multifamily Application.

    Confirm equipment requirements here.

  4. Submit documentation.

  5. Get your incentive.

    Note: A post-installation verification may apply.

Equipment Incentive
Condensing Gas Furnace $8.25/kBtu/h input capacity
New Rooftop Unit (RTU) with Demand Controlled Ventilation (DCV) $29/ton
Advanced Rooftop Controls (ARC) – Full Retrofit $300/ton
Commercial Condensing Gas Tank Water Heater $3.50/kBtu/h input
Condensing Gas Tankless Water Heater under 200 kBtu/h $140 each
Commercial Condensing Gas Tankless Water Heater/Hot Water Supply Boiler at least 200 kBtu/h $1.40/kBtu/h
Commercial Condensing Gas HVAC Boiler $6.50/kBtu/h input
Domestic Hot Water (DHW) Recirculation Pump Control $100–$500/system
Steam Trap $350 per each replaced or repaired steam trap
Thermostatic Radiator Valves $200 each
Swimming Pool Heater $0.90-$5/sq ft of pool surface area served by heater
Commercial Pool Cover $6/sq ft of pool surface area
Commercial Clothes Washer, Common Areas $100 each
Ozone Laundry System $5,000-$30,000 per system
Two-stage Gas Valves on Clothes Dryers $200 per valve
Clothes Washer, In-Unit $30 each
Laundry Center Washer/Dryer Combo, In-Unit $45 each
Gas-fired Automatic Conveyor Broiler $2,500-$3,500 each
Gas Convection Oven $315 each
Gas Combination Oven $750 each
Gas Single Rack Oven $1,500 each
Gas Double Rack Oven $2,000 each
Gas Steam Cooker $3,400 each
Commercial Vent Hood with Demand Controlled Ventilation $1,500/controlled motor hp
Attic/Ceiling Insulation $0.25/sq ft
Pipe Insulation $10/linear ft
Wall Insulation $0.50/sq ft
Floor Insulation $1.90/sq ft
Windows $4-$12/sq ft
Smart Thermostat (self-installed) $100 per unit
Smart Thermostat (contractor-installed) $230 per unit

Ready to apply for standard incentives? Download  application forms. If you need guidance, just ask your trade ally contractor for assistance.

Custom Incentives

Energy Trust offers custom incentives for larger, more complex projects. Learn more about custom incentives >

Incentives are subject to funding availability and may change.

Incentives also available for businesses located in Southwest Washington.

Need Help? Contact Us.


Success Stories

Uptown Apartments, Vancouver, Washington

Uptown Apartments, Vancouver, Washington

Cash Incentives: $4,000