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Old 03-11-22, 01:12 AM   #21
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Originally Posted by Xringer View Post
Those valves would work in many systems and don't require any operator input.
I like the idea, but if they are installed at the 'lowest point', that means in the basement, near the uninsulated slab.
Where the winter slab temperature is 40 to 50 degrees F. Thanks to the Geothermal effect of the ground water table etc.
So, the valves would never get cold enough to open. The water pipes to the bathroom, kitchen and the forced hot water loop (upstairs) in the bedrooms would freeze up and split open.
The only pipes I'm worried about freezing are the pipes that are at least 5 feet above the basement floor.

I once used a small ASHP hot-water heater in the basement. It made a LOT of very cold air, while making our hot water. I was afraid it would make the basement very cold during the winter.
But, it was never able to lower the room temperature enough to notice.
Geothermal heat from the floor is very stable.
In the summer that ASHP kept the basement air less humid. I was sorry to see that system go..
Nyle is releasing the E8 this year, based on what I've heard. I'm hoping to hold out on a new waterheater until I see pricing for that. it's got 2x the capacity of all the integrated units.

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