Pennsylvania

For Pennsylvania, energy code in force is International Energy Conservation Code of 2021; adopting authority is Pennsylvania Department of Labor and Industry; statute / rule citation is 34 Pa. Code 403.21, verified against its source on 2026-09-29.

What the source says

‘‘Pennsylvania’s Alternative Residential Energy Provisions.’’ (2) The prescriptive methods for all other buildings or structures contained in the ‘‘International Energy Conservation Code of 2021’’

— pacodeandbulletin.gov, retrieved 2026-08-18

Source

• pacodeandbulletin.govhttps://www.pacodeandbulletin.gov/Display/pacode?file=/secure/pacode/data/034/chapter403/s403.21.html

Last verified against source: 2026-09-29. Due for re-check by 2027-02-14. This page as Markdown · OKF bundle · full dataset as JSON.