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Instaling an Outdoor Reset Control or Not

I live in southeastern MA.  We just installed a new high efficiency condensing gas boiler (an HTP EP-220).  However, the contractor advised us against installing an Outdoor Reset Control (ORC).  We have 5 zones (plus an indirect hot water heater). 4 zones feed baseboard heaters (1st & 2nd floors) and 1 zone feeds a radiant heated slab in the basement.  The contractor said that because of the radiant slab, it's not worth installing the ORC.  He tried to explain it to me but I didn't get it.  My question(s): a) is it true that it's not worth it?; b) why or why not?


Re: Instaling an Outdoor Rest Control or Not


Is it worth it to you? You are the only person that counts.


Handy Andy In Mt Airy NC

Re: Instaling an Outdoor Rest Control or Not

The rationale for installing it is greater efficiency = cost savings.  If there is no cost savings then it's not worth it (to me).  Andy, do you know, why having one radiant zone mitigates the value of an ORC for the entire system?

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