100TH MERIDIAN
Window Film ToolPlanning range, not a guarantee
Solar heat savings calculator.
Estimate the seasonal cooling savings solar-control film could deliver, based on published industry figures. Enter your rough cooling spend and sun exposure for a planning range.
Estimated seasonal savings
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Enter your details and press estimate.
A planning range, not a guarantee. Savings depend on climate, glass, and how hard your AC works.
Get My Free ReportThe ranges
| Room exposure | Cooling-cost reduction | Notes |
|---|---|---|
| Mostly north / shaded | ~5–15% | Least direct solar gain to reject |
| Mixed exposure | ~10–22% | Typical whole-home result |
| Lots of south / west glass | ~15–30% | Most heat to reject, so the biggest savings |
Range is 100th Meridian's own planning estimate, not a published study figure. Actual savings are climate- and home-dependent (DOE Building America).
Savings questions
Cooling savings, answered.
Honest ranges. If yours isn't here, call Joey at 905 359 7077.
How much can window film save on cooling?
Solar-control film reduces cooling load by rejecting heat at the glass. How much you save depends on your glass, exposure and climate. Measured field work by Lawrence Berkeley National Laboratory for the GSA found solar-control film cut cooling energy meaningfully, with the largest reductions on the sunniest exposures. The 10–30% range and the $150–$500 a year figure are 100th Meridian's own planning estimates for Niagara homes, not a published study result.
Are these savings guaranteed?
No. Savings are climate- and home-dependent. The US Department of Energy's Building America guidance notes window films are most appropriate in warm to hot climates and may increase heating needs in winter. Treat the result as a planning range, not a guarantee.
What affects how much I actually save?
Glass area and orientation (south/west windows gain the most heat), how hard your AC works, your electricity rate, the film chosen, and how much of your bill is cooling versus other loads.
How do I get an accurate number?
Book a free assessment. Joey looks at your glass, exposure, and goals and recommends the right film. Call 905-359-7077.
