Home Insulation: Cut Heating &
Cooling Bills by 15–25%
Most US homes are significantly under-insulated. Adding proper insulation is one of the highest-ROI upgrades available — with a 30% federal tax credit and payback in as little as 3 years.
$1,200–$3,500
Typical Attic Project
15–25%
Energy Bill Reduction
3–7 yrs
Average Payback
30% Tax Credit
IRA Section 25C
Insulation Types & Costs Compared
The right insulation type depends on where you're insulating and whether you need air sealing too.
| Type | Installed Cost | R-Value | Best For |
|---|---|---|---|
| Blown-In (Attic) | $0.80–$1.50/sq ft | R-2.2 to R-3.8/in | Best value for attic upgrades |
| Batt (Walls/Floors) | $0.50–$1.80/sq ft | R-11 to R-21 | Open cavities, new construction |
| Spray Foam | $0.80–$3.50/sq ft | R-3.7 to R-7.0/in | Air sealing + insulation combo |
| Rigid Foam Board | $0.75–$2.00/sq ft | R-3.8 to R-6.5/in | Basement walls, exterior sheathing |
All insulation projects qualify for the IRA 30% tax credit (up to $1,200/year) when installed in your primary residence.
Where to Start: Highest ROI First
Attic Insulation
The single highest-impact project for most homes. Heat rises — an under-insulated attic wastes thousands per year.
Est. $200–$500/yrAir Sealing
Seal gaps around pipes, wiring, and framing before adding insulation. Air leaks can waste as much energy as leaving a window open.
Est. $150–$350/yrRim Joists & Crawl Space
Spray foam on rim joists delivers a fast payback (2–4 years). Full crawl space encapsulation eliminates moisture issues too.
Est. $100–$250/yrGet Free Insulation Quotes Today
Compare quotes from licensed local insulation contractors. Takes 60 seconds.