1- I have a forced air gas furnace & hot water gas system. Can I combine the exhaust pipe from the water heater into the exhaust pipe for the forced air furnace with a y adapter?
I am living in NH, will that meet the building code?
2- Also, I am looking to combine the dryer exhaust pipe to the central vacuum exhaust; can it be done safely?
And... last few questions;
3- The heat saver (plastic box) that connect to the dryer exhaust... is it safe?
Does it meet insurance & building codes?
Where should that be install... at the end before it get outside?