HOT WATER HEATERS
|Standard Hot Water Tanks:
40-50 gallon typical size, has a standing pilot. Efficiency 60%.
Typical life span is 8-13 years.
(very useful depending on how many family members, especially teenagers).
High Efficiency 95% Tankless:
Navian tankless np180 can deliver a minimum constant 3.5 gallons a minute of hot water. Unit is pvc vented to outside not thru chimney.
Typical life span is 15-20 years.