Add Radiant Floor Heat to existing Hydronic System?

Old 11-21-21, 05:54 AM
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Add Radiant Floor Heat to existing Hydronic System?

I have an old Weil McClain II 100K boiler which is doing just fine with a single-zone setup with old cast iron rads. But now planning a kitchen area renovation and I'm considering saving some space and adding comfort by changing those 3 rooms to under-floor radiant heat.

Is this in any way shape or form a project I can do on my own? I'd of course need another zone, and mixing valve to temper the water temperature. It seems straight forward, but is it?

Or am I better off switching to Runtal wall panel heaters? Or just make room for the cast iron rads that are there now?
Old 11-21-21, 08:03 AM
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I have done it. You can do it too!

Do an advanced search with my user name in the Name Field and "radiant" in the Keyword field to see a number of threads that I have posted and replies I have made to others' posts about radiant floor heating on hydronic systems.

Click on "Search this Forum" in the grey Forum header (not this Post header) to get:

Click on "Advanced Search" to get next screen.

Fill in search fields in top section. Click on grey name box to confirm username entry. Click yellow Search button at bottom (not shown).

Search returned 20 listings in Boiler forum. There may be others in other forums as well.

Post back with any further questions.

Last edited by 2john02458; 11-21-21 at 10:04 AM. Reason: Corrected Search instructions. Search must originate in Forum header, not Post header.

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