multifamily duct sealing and duct insulation

Get up to $50 cash back

Get up to $50 cash back

How to apply

Step 1

Please contact us to review requirements, get started and to arrange for a pre-inspection of the multifamily property.
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Bring added value to your multifamily customers

Heating and cooling can account for more than half of a property’s energy consumption, but as much as 30 percent of that energy can be lost through unsealed ducts. Help your multifamily customers increase heating and cooling system efficiency with duct sealing and duct insulation. We offer incentives to both you and the property owner for this valuable service.

Qualifications and incentives

ServicesTrade ally incentive
Duct sealing for multifamily proprerties with electric heating$50
Duct sealing and duct insulation for multifamily proprerties with electric heating$50

Ensure the home qualifies:

  • Must be existing home, not new construction
  • Work completed must comply with all building codes and standards

Requirements for both measures:

  • Work must be completed by a Program-Eligible or Qualifed HVAC Contractor listed on the Program-Eligible HVAC Contractors List
  • Work must be done in accordance with the specifications outlined in the Idaho Technical Specifications Manual
  • Ducts must be located in an unconditioned spaces such as any space outside of the thermal envelope of the biulding that is not intentionally heated for occupancy.
  • Must have a minimum of 10 linear feet of exposed ductwork. All exposed ductwork must be sealed and insulated (ductwork only, not venting).
  • Property must have an electric heating system serving 80 percent the home's conditioned living space.
  • Duct sealing must reduce duct leakage to outside by 50 percent with a 100 CFM (Cubic Feet per Minute) minimum reduction.
  • Duct insulation must be installed after ducts are sealed.
  • All physically accessible ducts located in conditioned living spaces must be insulated.

Additional requirements for duct sealing and duct insulation:

  • Ductwork must be insulated to a minimum of R-8.
  • Pre-existing duct insulation levels may not exceed R-2.

Additional requirements for duct sealing (stand-alone):

  • Pre-existing insulation must be R-2 or greater.

Additional program requirements:

  • Duct sealing and duct insulation services can be performed by multiple trade allies and must be performed at the same time to qualify.
  • Incentive available on existing duct work only and must be located in an existing property.
  • Newly installed ductwork does not qualify for an incentive.
  • Incentives are limited to one duct sealing incentive per duct system for the lifetime of the property.
  • Incentive amount cannot exceed the total cost of the project.
  • All required documentation must be postmarked within 90 days of the work completed date.

Required documents:

  • Contact the program to schedule a pre-inspection and to get the required application documents at [email protected]
  • Itemized receipt or contractor invoice
  • Third Party Payment Addendum for applicants who would like to forward payment to a third party not listed on the utility account
  • IRS W-9 Form, if applicable*
*Applicable only to businesses and non-individual customers, including landlords, applying for incentives.

Conditioned vs. unconditioned space - clarification notes

  • For the most part, basements are conditioned spaces. Basements are not usually thermally isolated from the main living area and contain space conditioning ducts. Basements are also used for storage and frequently contain laundry facilities and other living spaces. Ducts serving unfinished basements are not always equipped with dedicated supply registers, although single registers at plenums are not unusual.
  • An unconditioned basement would have these properties: Thermally isolated from the main floor by insulation in the floor. Insulated, weather-stripped door (if above floor plane) and insulated stairwell walls where thermal plane penetrates floor, air sealed (caulked, foamed penetrations) wiring plumbing, sealed duct penetrations and sealed, insulated ducts. No supply registers.
  • While a crawl space is unconditioned space, the floor must be insulated prior to or at the same time ducts are sealed and insulated to thermally isolate the crawlspace. Failure to do this will increase the heating load of the home and potentially cause comfort issues.

Customer eligibility

Multifamily properties featuring five or more attached units are eligible to receive program incentives. Multifamily property owners must have a landlord account on a qualifying residential rate schedule. You can find your rate schedule on your utility bill or by calling 1-888-221-7070. Qualifying residential rate schedules: Idaho: 1 or 36

Application details


  • Review the information in the Eligibility section of this page and call 1-800-942-0281 or email us to ensure your multifamily property is eligible.
  • Pre-inspection of multifamily property
  • Once it has been established that the complex is on a qualified residential rate schedule, a pre-qualification inspection will take place.
  • Please provide the following required information to initiate a pre-qualification inspection:
  • Specific street address or account number
  • Complex Name
  • Contact at the complex and phone number where they can be reached
  • Measures that are being requested to be inspected
  • Once this information is received, an inspector will assess the complex to verify whether it qualifies and if it would benefit from our incentive offerings.
  • Your contractor will be notified of the status of the inspection. If the complex qualifies for any of the Wattsmart Homes program incentives, the contractor will schedule a time with the property manager to complete the work.

Contractor completes energy upgrades:

  • The contractor will perform the necessary work for the project to qualify for an incentive. Consult with your contactor to get a clear understanding of the work being performed and how long it will take. Also remember to notify your tenants about the work being done.

Application is submitted:

  • Once the work is completed, the contractor submits an application to the Home Energy Savings program.
  • All units listed on the application must be verified on the landlord account (units may need to be added if they are not under the landlord account at time of review).
  • One itemized invoice detailing the work performed for the property must be submitted.
  • A completed W-9 form for the person or entity receiving the incentive check must be submitted along with the application for tax purposes. For changes to account name, contact Business Solutions at 1-866-870-3419.
  • In some cases a Third Party Payment Addendum will be required if a landlord account is not set up or if the payment is going to anyone other than the account holder
  • Applications cannot be processed if any required documentation is missing.
  • The property is then queued for a post-work inspection.

Post-work inspection:

  • After receipt of a completed incentive application the program will schedule a post-work inspection to verify all program requirements have been met.
  • A minimum of 25 percent of the units that received an energy efficiency upgrade must be inspected.
  • Tenants should be notified of this post-work inspection beforehand.

Application is processed and check is mailed:

  • Checks will be issued for approved applications within 4-6 weeks of final processing.


  • IRS W-9 Forms (for business and non-individual customers receiving incentives)
Questions? Call 1-800-942-0281 (option 2) or email us.

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