Yet Another Hot Water Idea

[Rory]

I'm on my 7th heating season with a Tarm Solo 30 and a 4'x4'x8' unpressurized storage tank. My DHW is heated via a 180' coil in the tank, and I typically burn slightly more than 1 fire a week in the summer. My old oil furnace "listens" to the tank and kicks in when necessary. I also run a dehumidifier in my cellar in the summer, and I have been intrigued by the advances in heat pump technology which seem to give a triple bang for the buck - dehumidifying, heating DHW and cooling the air around them. There seems to be 2 ways I could go with this. One would be to get a unit such as Tom from Maine is selling and run plumbing lines into my tank, but the other would be to simply add a heat pump/water heater unit in line after the DHW line exists my existing storage tank. Other than the additional standby loss of storing DHW all year (minimal in a well insulated unit, I would hope), what would be the downside of this approach?

 

[GENECOP]

This year we installed the Nyle Geyser.....sat it next to our Buderus stack....piped it into the bottom Buderus HW tank, all summer it worked great supplying all of our DHW needs....closed off my Super store and just let the Nyle heat the 60+- gallons in the Buderus....This fall first attempted to leave Nyle on while Greenwood and Oil system was running, The problem I had was the Nyle would not turn off, the system was always struggling to satisfy the Nyle....So in the winter I might leave the Nyle off...Also considered leaving the Nyle on year round but removing the 60 gallons from the heating loop...One problem I discovered was the domestic Temp....If the system (after the fire was out ) allowed the water temp to drop to say. 100, that was OK for heating (Radiant) but not ok for DHW....Still figuring things out...The Nyle runs about $35 a month for electric....

 

[capecod]

I, too, purchased a Nyletherm , and found Tom from Maine very helpful. However, I have a larger basement (larger than Tom was used to) and I did not want to take the chance on install because of that. I purchased a G3E Geospring ($999 on sale with $750 rebate) waiting to have it installed. It has a "free " built in dehumidifier I can really use in the summer. In the cold northeast winters, I plan to use the hybrid as an ordinary boiler, my #1 goal, to use less oil.

 

[maple1]

I'm not understanding what the larger basement has to do with the Nyletherm? Bigger space should be better for HPWHs - not sure the reason for not installing it? And whatever the spacing situation, it would apply to the Geospring the same as the Nyletherm - as would the dehumdifying aspect.

I plan to use the hybrid as an ordinary boiler

Also not sure what you mean there - a HPWH will not function as a boiler.

 

[capecod]

Tom (nyletherm) said numerous times that the Nyletherm was designed for smaller, rather than larger basements.from what I understand about the Geospring, during the cold of the winter because it is a hybrid,I should just use the Geospring on electric mode , in the summer months switch to hybrid mode.