EPA estimates air sealing plus adding insulation saves homeowners about how much on heating and cooling, on average?

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  1. About 2 percent
  2. About 50 percent
  3. About 15 percent

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References

  1. ENERGY STAR: Rule your attic www.energystar.gov/saveathome/seal_insulate/rule_your_attic Checked 2026-10-10.
  2. ENERGY STAR: Check your attic insulation www.energystar.gov/products/ask-the-experts/how-to-check-your-homes-attic-insulation-level Checked 2026-10-10.
  3. ENERGY STAR: Air-source heat pumps www.energystar.gov/products/air_source_heat_pumps Checked 2026-10-10.

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