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Maryland Insulation and Air Sealing Programs

Insulation and air sealing can improve comfort and reduce unwanted heat transfer. Start with an assessment of your home and the requirements of the applicable program.

How to Apply →

Program status checked October 6, 2026. Federal homeowner credits 25C and 25D are unavailable for new installations after December 31, 2025. Maryland HEAR and HOMES rebates have not launched. On September 30, 2026, the Maryland Energy Administration submitted updated applications for both programs to the U.S. Department of Energy. Confirm current utility funding before committing to work.

Official sources: IRS: 25C, IRS: 25D, Maryland Energy Administration: IRA rebate status.

Assess the home before adding materials

An energy assessment can identify insulation gaps, air leakage, duct problems and moisture concerns. An appropriate plan considers ventilation and combustion safety as well as comfort and efficiency.

Common improvements

  • Attic or wall insulation suited to the construction and climate.

  • Air sealing around appropriate penetrations and openings.

  • Duct repair and sealing where leakage is identified.

  • Weather-stripping and caulking where suitable.

  • Radiant barriers only where an assessment and applicable program support them.

R-values and codes vary

Required insulation depends on the jurisdiction, building assembly and project. Existing depth alone does not establish R-value; material type and condition matter. Confirm local code and the program's specific requirements instead of using a statewide minimum.

Weatherization and utility funding

Income-qualified weatherization is different from an equipment rebate. Ask the administrator what work is provided, what costs you may owe and whether funding is open. Oncor reports its Low-Income Weatherization funding for 2026 is exhausted. Maryland HEAR and HOMES rebates have not launched, and 25C does not cover new 2026 installations.

Keep the required evidence

  • Assessment and scope of work.

  • Product specifications, installed R-value and covered area.

  • Pre- and post-work testing if required.

  • Invoices, photos and administrator approvals.

  • Review backup heat, noise, maintenance and warranty terms.

Planning insulation or air sealing?

Get a home-specific scope and verify the program requirements first.

See How to Apply →