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Old 2018-10-17, 10:32 AM
dvg dvg is offline
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Default Tankless vs tank based water heater

I am looking into a new build house for the second time - this time I am asking that the builder install a water heater and include in the mortgage rather than renting one.

Does the installation cost for a tank based system differ vs a tankless system?

These are the heaters I am looking at. Any input on these choices? I am also looking for input as to the savings of the tankless vs the tank based system. The house will use propane not natural gas so would be more sensitive to gas usage.

Would a unit like the 45HI be able to supply a normal households hot water in our winters where the required delta T is likely 70 F?

It seems like drain water heat recovery may not be cost effective in terms of payback period, but I wonder if it would make up for the lower BTU count of the 45HI.

Rinnai V65iP: https://www.build.ca/RINV65IN

Eccotemp 45HI: https://www.costco.ca/Eccotemp-45HI-...100311947.html

Eccotemp EL22i (same specs as the 45HI, just newer).: https://ca.eccotemp.com/eccotemp-el2...-water-heater/

tank:

GSW 50: https://www.lowes.ca/water-heaters/g...rchTerm=gsw-50

Last edited by dvg; 2018-10-17 at 11:29 AM.
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