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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. Want your energy savings to stand out? Bring us in.

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 Furnace $1.50–$3/kBtu/h input capacity
New Rooftop Unit (RTU) with Demand Controlled Ventilation (DCV) $29/ton
Commercial Tank Water Heater $3.25/kBtu/h input
Tankless Water Heater < 200 kBtu/h $300 each
Tankless Water Heater/Boiler ≥ 200 kBtu/h $2.25/kBtu/h each
Commercial Condensing HVAC Boiler $7/kBtu/h input

Limited-time bonus. To qualify, equipment must be purchased,
installed and the application must be received between 4/1/21 – 12/31/21.
Domestic Hot Water (DHW) Recirculation Pump Control - Aquastat $100–$300/system
DHW Recirculation Pump Control - Learning $100–$300/system
DHW Recirculation Pump Control - On Demand $300–$1,900/system
Steam Trap $100/trap
Thermostatic Radiator Valves $100 each
Commercial Condensing Pool Heater $2.35–$3.50 /sq ft of pool surface area served by heater
Commercial Pool Cover $2/sq ft of pool surface area
Clothes Washer, Common Areas $65 each
Clothes Washer, In-Unit $30 each
Gas-fired Automatic Conveyor Broiler $2,015–$2,925 each
Gas Convection Oven $315 each
Gas Combination Oven $750 each
Gas Rack Ovens $2,500–$5,000 each
Gas Fryer $1,000/vat
Gas Steam Cooker $1,850 each
Commercial Vent Hood with DCV $750/controlled motor hp
Dishwashers $195–$900 each
Attic/Ceiling Insulation $0.25/sq ft
Flat Roof Insulation $0.30/sq ft
Pipe Insulation $4/linear ft

Ready to apply for standard incentives? Download general project 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. Eligible participants can receive up to $75,000 per site, per year for qualifying projects. Learn more about custom incentives >

Incentives are subject to funding availability and may change.

Need Help? Contact Us.


Success Stories

Uptown Apartments, Vancouver, Washington

Uptown Apartments, Vancouver, Washington

Cash Incentives: $4,000