I bought one of these from ChimneyHeaters.com . I installed and it works fine. Heats my 2000

square foot house. I have the pump connected to a UPS but I am not sure how long the pump

will run if the electric goes out. I had it installed all winter and did not have to turn on

my Electric heat once which saved me about 200 euro a month here in Romania.

The Electric is not stable here so I had to rush to take out the fire a couple of times

because the water pump had stopped and the pressure valves were going off. The UPS will

solve that but I don't know how long a UPS will keep my central pump going. I will attach a

pic of what chimney heaters are in case you are not familiar with them. The pump is a

Grundfos and has three speeds.