Privacy Policy

Last updated: March 2026

What We Collect

When you use our calculator, we process the ZIP code you enter to look up local data (climate zone, electricity rates, labor rates). We do not store your ZIP code or any personal information.

Analytics

We use PostHog for anonymous usage analytics to understand which pages are visited and how the calculator is used. No personally identifiable information is collected.

Cookies

We use essential cookies for site functionality. Analytics cookies are used by PostHog to track anonymous page views.

Third-Party Data

Cost data on this site comes from public government sources (BLS, EIA, ENERGY STAR, IECC) and crowdsourced homeowner reports from Reddit. We do not sell or share any user data.

Contact

Questions about this policy? Email hello@wattfax.com.