Peerless Boiler as a Heat Pump Backup

[BobW]

I have a Peerless 85-140-WPC-H (or WRS) boiler. I use it for a heat pump backup, domestic hot water, and a heater for my small shop. I am getting a new heat pump and a tankless hot water heater. I would like to keep the boiler as a backup for the new heat pump. One tech told me that was his recommendation. Another wanted to install 2 tankless systems and use one for the heat pump backup, as he said the water in the boiler would always be hot, even when I wasn't using it. Which one is *
Thanks

[BobW]

I am going with a Bryant 286BNA048 Evolution. I think it will run water through a coil through the air * Will not be using the boiler for domestic hot water anymore as I am going tankless. I live in Lower Delaware.

**"dilkey"-* kind of heat pump are you * are you using the boiler to temper the water temp for your heatpump, also how are you using the boiler for domestic hot * we need more info, also what part of the country are you **/-*

[4ftBanger]

I am not aware of any tankless water heater that can be used to heat a heating coil - They are designed for open-loop domestic heating only. The boiler can be set up to only fire on a demand for heat, although it will take a couple extra minutes for the coil to get hot. I would expect a new, properly sized heat pump to handle the heating load most of the time without activating the boiler. You probably wouldn't need back-up heat until the outdoor temps get down to around 30 - 35.