Natural Gas System

This simple diagram pretty well describes the systems in our new home that will be powered by gas. The exception is the range, which will be electric. Also, we'll have two gas furnaces, one on the main floor and one for the daylight basement. The main floor system acts as a backup for a Lennox Heat Pump. The heat pump will be the primary heating and cooling system. However, when the temperature drops below the heat pump's ability to operate as efficiently as the gas furnace, the gas furnace will take over until the temperature rises enough for the heat pump to operate more efficiently.

The photos below trace the plumbing for the gas appliances from the supply and meter outside the east wall of the garage, into the garage, to the main floor furnace on the back garage wall, then the mud room, kitchen, through the east kitchen wall out to the deck to provide for a gas BBQ, then across the ceiling and down to the fireplace, and down to the furnace and the Navien tankless water heater in the storage room of the basement.

Tankless Hot Water System and Sewer System Plumbing

These pipes under the deck appeared Wednesday or Thursday last week. Eventually, a chase (i.e., box) will be built to hide these pipes.

 One is apparently a exhaust line for the tankless hot water, and the other would be the intake.

 The exhaust travels up the back of the garage,

 and vents on the east side of the roof.

 The pipes begin in the lower level storage room where the tankless system will be located.

There's another piece of large diameter pipe right under the Bedroom #3 west window

This is apparently a sewer clean out. This eyesore will be cut down closer to ground level and covered with a lidded box.