A vent apparatus is used to install a tankless water heater or similar equipment inside an attic without going onto the roof. The vent apparatus may include a main housing and an umbrella assembly movably disposed therein. The main housing (e.g., PVC pipe) is installed through the roof. ...
Years ago we started installing gas boilers that allowed venting through PVC Drain Waste Venting (DWV) piping. The use of PVC DWV piping to vent the boilers made for easy routing of vent pipes and the ability to vent up through the roof much like plumbing vent stacks. Until recently the ...