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Tank, tankless or indirect
I am from the school of learning by doing. How hard is it to do a diy install on a tankless hot water heater. How do you Size the gas pipe for the unit? Should I contact my gas company? What about a diy install of an indirect water heater? I have a Dunkirk PVWB-4D boiler, natural gas, 105000btu/hr input, 84000 btu/ hr output. It old but can I add another zone to that? Which means shutting down an draining boiler? But I kind of have an emergency with a tank hot water heater and have a rental apartment in the same house so maybe I should do a quick and dirty new install of a cheap tank water heater and wait for warmer weather to do something more complicated.