Video answer · Seal Tech Insulation
Can Spray Foam Insulation Cut Your Energy Bill by 50%?
It can, in the right house.
The short answer
It can, in the right house. Seal Tech has seen homeowners’ energy bills drop by as much as 50% after insulation and air sealing upgrades, usually in homes that started with very little insulation. Your savings depend on where your house is starting from.
What the crew says in the video
- Jack Stimach says they have seen “as high as a 50% reduction in energy bills” when they come into houses and take care of them.
- He adds that many houses still have newspaper, or nothing at all, in the walls.
Why spray foam can cut your energy bill so much
The biggest savings come from homes that are under-insulated and leaky to begin with: older homes with empty wall cavities, a few inches of settled attic insulation, and unsealed rim joists. In those homes, heat is leaving through every surface. Air sealing and insulating stops most of that loss, so the furnace and AC simply run less.
What affects your results
- Starting point: a home with almost no insulation has more to gain than one that is already decent.
- Air leakage: sealing leaks often matters as much as adding R-value.
- Which areas get done: attic, rim joists, walls, and crawl spaces each contribute differently.
- Your HVAC and habits: equipment age, ductwork, and thermostat settings all play a role.
50% is the high end of what we have seen, not a guarantee for every home. During a free evaluation we look at your house and tell you honestly where the biggest savings are.
Where to start
For most Michigan homes, the order is: seal and insulate the attic, seal the rim joists, then address walls and crawl spaces. An energy audit with blower door testing shows exactly where your house leaks the most.
Bottom line: the fastest way to cut your energy bill is to find where air is leaking and where insulation is thin, then fix those spots first.
Further reading: Energy Saver: Home Insulation (PDF) (U.S. Department of Energy).
See how much your home could save
We will find your biggest energy losses and give you an honest estimate.