That's what they say, but every time I have tried to descale, it has caused
a heat exchanger leak. I have been running tankless for 20 years. They
last about 5-7 years if you are lucky. Less if you descale. And they are
expensive. But I love instant never ending hot water.
-----Original Message-----
From: Seth Mattinen
Sent: Sunday, November 29, 2020 8:41 AM
To: [email protected]
Subject: Re: [AFMUG] Water heaters
On 11/28/20 10:34 PM, Steve Jones wrote:
Tankless is looking almost comparable in price for gas, so I'm curious if
any of you guys run them without major water softener and filters.
You'll need to de-scale a tankless with hard water or the heat exchanger
will become clogged. You'd put in isolation valves to allow running
descaling solution through it, and make sure to do that on a regular
schedule. If it clogs completely you're boned.
Are residential boilers a thing? All my walls had pocket doors so I have
plenty of room for radiant walls, I dont know if boiler heat it even
efficient though.
Sure, I have one. 199k BTU condensing boiler with a 110 gallon domestic
hot water (DHW) storage tank. DHW tanks are stainless steel, so they
don't have the longevity problem that faces normal steel tank water
heaters. Giant tank means hot water lasts a long time. But boilers are
expensive. My system was put in by a previous owner, so I didn't have to
pay. Boilers are really popular in all the houses around Lake Tahoe
where it's really cold in the winter. You get a steady, constant heat
rather than bursts of heat with forced air.
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