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Advice on repl DWH + bb WH, in Illinois
Situation - Equipment:
- I have a 75 gallon DWH that takes 75K BTU and has a recovery of 74 gallons.
- Still works, decently efficient, nearing EOL Set to 125 degrees.
- I also have an ELECTRIC WH for a supplemental baseboard hydronic system in our basement. 9k Watts, temperature set to 140 degrees. No problems, except $$$ to run
- Great programmable thermostat for baseboard unit; happy to stagger it to ensure showers take priority in the mornings if I am supply limited.
Situation - Usage:
- DHW is a challenge now that those kids shower in the morning (and wife does laundry)
- Water temperature step-up is brutal during winter time -- I swear I've seen incoming water at 40 degrees, so getting that to 125 in our current WH takes forever.
Request for Your Advice and Counsel: Replacing one or both units...
- Would be great to get rid of both WHs with one, very efficient unit.
- Don't want a full-fledged "boiler" as we only use the baseboard system 5 months a year
- In other words, want a unit big enough to handle winter loads, but not so big it costs us a fortune during warmer months from heat loss
- Seems like a tankless system would be really stretched to handle the morning loads without some storage inline, either warming water on intake or holding HW...
- Condensing storage heaters like the Versa series from HTP look pretty good to me, but I wonder whether these are beasts that will cost a fortune when we aren't using baseboard system.
- Current baseboard hydronic system is closed; converting to potable likely will take some cleaning; I will ask about this in another thread
Appreciate any insights on equipment I should consider, either by class or by brand name / model -- to ensure there aren't any "commercial" endorsements, please feel free to recommend "similar to" and I'll get your meaning.