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Which Gas Hot Water Heater?
Our small 5 unit apartment building (9 people total, 5 bathrooms) has 2 chimney-vented gas hot water heaters (one 40 gallon Hotpoint 40K BTU 55gal 1st Hr capacity installed in 2013 & one 1993 Vanguard 50 gallon 40K BTU 74gal 1st hour capacity that's leaking on the drain).
We're thinking we could replace the 24 year old Vanguard heater with a new 40 gallon 60-70 1st hour capacity one using the same chimney venting to avoid drilling a new hole through the brick wall for power-venting.
We saw Lowe's & Home Depot have some A.O.Smith & Rheem units with the capacities we're considering. Any thoughts on deciding between similar models/brands? We're wondering if the higher efficiency models are worth the higher price.