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Snowy Wood House


Is your home drafty? Have high heating bills?

Insulate and Seal Your Home

Learn about how to access incentives to save on heating costs by insulting your home, fixing drafts, and replacing single paned window.

Federal incentives for home owners through the Inflation Reduction Act are summarized on Rewiring America's IRA Calculator. Just put in a few details about your household income and zip code and learn how you can save through tax credits and/or rebates. You can find more info on incentives at, and get weatherization tips on the Department of Energy website.

If you live in Naperville, by contributing to the Renewable Energy Program as little as $5/mo you can access hundreds or thousands of dollars in savings to make your home more energy efficient. Activities eligible for incentives include heat pumps, air conditioners, attic insulation, solar, and windows (only if replacing single-pane).

When you insulate and weatherize your home, you can save up to 30% on your energy bills.

House Plan

For optimal energy efficiency, your home should be properly insulated from the roof down to its foundation. The illustration above shows all the areas of the home where there should be insulation. The numbered areas shown in the illustration are as follows:

1. In unfinished attic spaces, insulate between and over the floor joists to seal off living spaces below. If the air distribution is in the attic space, then consider insulating the rafters to move the distribution into the conditioned space.

(1A). Insulate the attic access door

2. In finished attic rooms with or without dormers, insulate (2A) between the studs of "knee" walls, (2B) between the studs and rafters of the exterior walls and the roof, (2C) and ceilings with unconditioned spaces above.

(2D) Extend insulation into joist space to reduce air flows.

3. Insulate all exterior walls, including (3A) walls between living spaces and unheated garages, shed roofs, or storage areas; (3B) foundation walls above ground level; (3C) foundation walls in heated basements.

4. Apply insulation to floors above unconditioned spaces, such as vented crawl spaces and unheated garages. Also insulate (4A) any portion of the floor in a room that is cantilevered beyond the exterior wall below; (4B) slab floors built directly on the ground; (4C) as an alternative to floor insulation, foundation walls of unvented crawl spaces. (4D) Extend insulation into joist space to reduce air flows.

5. Do not forget to insulate the band joists.

6. Caulk and seal around all windows and doors. 

In addition to insulation, consider moisture and air leakage control in each area of your house. If radon is an issue where you live, you’ll also need to consider radon and radon-resistant construction techniques as you research foundation insulation options. In addition, if you live in an area with termites, you’ll have to consider how termite protection will affect the choice and placement of insulation in your home and plan for a means of inspection.

How Much Can You Save?

How Much Can You SAVE?


IRS tax credits available now:

  • Insulation and air sealing: 30%, up to $1200

  • Doors: 30%, $250/door, up to $500 max

  • Windows: 30%, up to $600

  • Home Energy Audit: 30%, up to $150

  • Whole Home Energy Reduction Rebate (HOMES): up to $4000

Naperville Renewable Energy Program:

  • Insulation: $1/square foot, up to $3000

  • Windows: $300/window, up to $3000

Later this year for families making <150% of the Area Median Income (AMI):

  • Point-of-Sale Rebates (up to 100% for low income and 50% for moderate income):

  • High-Efficiency Electric Home Rebate Act (HEEHRA): up to $14,000



Learn More

Incentives and rebates: Rewiring America IRA (Inflation Reduction Act) Calculator

Electrify your home and take advantage of incentives:


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