I am remodeling a one story 4500 sqft house and plan to convert to a tankless water heater. The house was designed with two water heater when it was built in the 60’s. One on each side of the house. One serviced two full bathrooms and I plan to add a laundry closet to this end of the house. The other services two full bathrooms, the kitchen and laundry room with a sink. they are setup as two separate systems.
Here are my ideas.
1. One tankless heater with recirculating pump to service the whole house.
2. Two tankless installed in series with recirculating pump servicing the whole house.
3. Two separate systems each with is own tankless water heater.
I am installing all new PEX water line through the entire house. Making this more like new construction. Using the existing copper isn’t practical with several water fixtures being relocated and all waterline being under the slab. The PEX will all run through the attic, which will be a conditioned space as I am spraying the roof deck with foam.
Here are my ideas.
1. One tankless heater with recirculating pump to service the whole house.
2. Two tankless installed in series with recirculating pump servicing the whole house.
3. Two separate systems each with is own tankless water heater.
I am installing all new PEX water line through the entire house. Making this more like new construction. Using the existing copper isn’t practical with several water fixtures being relocated and all waterline being under the slab. The PEX will all run through the attic, which will be a conditioned space as I am spraying the roof deck with foam.