combination HW boiler/heaters

Old 09-18-06, 07:26 PM
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combination HW boiler/heaters

i have a 100 year old home, 20 year old boiler that has been serviced and runs well. I am running two 40-gallon water heaters for the 4-apartments in the home. The water heaters are 9 and 13 years old and I am looking to replace prior to them breaking down. At one boiler service, the plumber discussed running the hot water heat from the boiler.

Can this generally be retrofitted on to the current boiler? How is the hot water stored without the tanks? What would a 'reasonable' cost be for this action? What are the anticipated benefits?

Input is greatly appreciated! If there is a site for additional information - please let me know
Old 09-23-06, 05:28 AM
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What beand and model is the boiler? There are many things that must be considered before undertaking a project that involves domestic hot water. Especially if it supplies water to multiple dwellings. There would be no problem if the boiler was a cold-start model and you installed one or two stainless steel indirect water heaters. If your boiler is NOT a cold start model, you will be maintaining water temperature in a poorly insulated vessel in order to be able to generate domestic hot water when needed. That can elevate operating costs and reduce efficiency of domestic water production.


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