55 Pa. Code § 3270.92 – Space heaters.

(a) Portable space heaters are not permitted.
(b) A fixed space heater shall be approved for use by a local firesafety professional. Written approval of the installation and written approval for use shall be on file at the facility.
(c) A fixed space heater shall be insulated or equipped with protective guards.

This section cited in 55 Pa. Code § 3270.241 (relating to requirements specific to school-age programs).