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What are the Pros and Cons of switching from tankless to Indirect hot water and other questions?
I'm looking to upgrade my standard contractors special domestic oil fired boiler which provides my baseboard hot water and domestic hot water, my house is 1800 sqft. We live in the Massachusetts where winter temperatures get down into the teens and occasionally dip into the single digits and below.
I've had the local oil company come out and spec what I would need and offered the good, better, best options. I won't mention prices, but the Weil-McLain's seem to be in my price range.
Two of the options I'm milling over:
Better: Weil-McLain P-WTGO-3 Gold Boiler, tankless with Carlin oil burner
Best: Weil-McLain PUO-3 Ultra Boiler with Weil-McLain Ultra Plus 40 Indirect hot water with Becket NX oil burner.
As I grew up in a home with a hot water heater I remember getting the last shower and not having any hot water, something I don't want to repeat.
The safest bet would be to go with the 2nd option and keep things in my home as status quo, but the oil guy recommended the indirect domestic hot water (option 3) as a more fuel efficient system as my boiler would not be kicking on as often in the summer.
Currently the house has only my wife and myself, but we plan on having a couple of children in the near future and I would like to plan accordingly. We have 2.5 baths, laundry and a dishwasher.
I'm looking for the pros and cons of having an indirect hot water system installed vs tankless.
Is the indirect 40 large enough?
Will I be running out of hot water after the 3rd shower?
(currently I don't)
Can two people use different showers at the same time? (currently we can)
Please let me know your pros and cons especially if you've switched from the tankless to indirect with similar capacity.