Section 410.170 - Venting(A) All devices that combust fuel including, but not limited to, furnaces, boilers, wood stoves, pellet stoves, water heaters and space heaters permitted under 105 CMR 410.160, shall be properly vented to the outdoors in compliance with accepted standards as defined in 105 CMR 410.010 except unvented propane or natural gas-fired space heaters approved in accordance with 527 CMR 1.00: Massachusetts Comprehensive Fire Safety Code.(B) All electric and gas clothes drying equipment shall be vented to the outdoors except electric dryers listed and labeled as ventless by the manufacturer.(C) All electric hoods for ranges shall be vented to the outdoors, except electric hoods listed and labeled as ductless or recirculating by the manufacturer.Adopted by Mass Register Issue 1495, eff. 5/12/2023.Amended by Mass Register Issue 1497, eff. 5/12/2023.