Review on Efficient Temperature Control with Grundfos 595444 3/4-Inch Clip-On Aquastat Control by Antonio Lofton

The thermostat works perfectly. However. The low setting of 85 degrees is not high enough to turn my pump on due to gravity flow in my return line. I have enough gravity flow to keep my hot water lines warm, but not enough to keep them HOT. I disabled this thermal switch and enabled the timer and it works great. I'm actually fine with instant warm water, with a 15 second delay for hot, so I skip the pump most of the time too lol. I guess you could say I've overhauled my system as I don't even use a pump now, but I'm very happy with the gravity return performance.