Specifications include, but are not limited to: HVAC WITH GAS FURNACE, COMPLETE TO INCLUDE PLUMBING AND ELECTRICAL GREEN TAGS WHEN APPLICABLE: 15-651: Install/Replace a Central HVAC system with a gas furnace. The unit will be high efficiency (14 SEER), sized according to Manual J and meet or exceed Section 15- Mechanical specifications. GC shall provide an 18 month service agreement. All materials and/or equipment demolished containing refrigerants, refrigerant oils or it¿s by products are considered hazardous and belong to the General Contractor and shall be removed off the premises. - PULL-DOWN STAIR/DOOR: 1"X6" stiles & treads: Install or Replace attic ladder, installation shall not disturb more than the lead base paint de minimis levels of 2 square feet per room or space of overall project or jobs.