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DHW - What is best with Boiler setup
Hi, I’m in the process of replacing my boiler and power vented water heater.
I’ve received 3 quotes I’m being told 3 different things will be the best for my home.
All company’s are quoting me viessman B1HA or B1KA
Option 1 B1HA and for DHW tankless water heater.
Option 2 B1KA only 3.6 GPM
Option 3 B1HA and 42G indirect tank.
I have another guy coming tomorrow to quote me a Navien combi boiler saying he can add a resivoir tank to the combi to bump me to 5GPM but sounds fishy to me and I do not want any pressure issues either.
It’s a 2 story home with basement rental. 2 bath, 2 kitchen 2 Laundry. The problem I’m having is everyone is contradicting each other as to what the best solution is for DHW. From what I’ve read Indirect tank should be the best but is 42G tank really big enough? I’m being told yes but I don’t think it is.
What are disadvantages to going indirect? I do not want to have hot water shortage issues and I can’t rely on what these contractors are telling me.
I’m quoting with very large well known contractors in Toronto, Ontario.
Thank you in advance!