Nuheat Entity Becomes Unavailable for Multiples of Five Minutes #23

My thermostat will regularly lose connection to HA, with no evidence that it has lost connection to my router.

After about exactly five or ten INTEGRAL minutes the thermostat becomes Available again. I have an automation that tracks this change-in-state.

The connection loss itself seems random, sometimes not in a day, sometimes several times in a day. The only constant seems to be that the thermostat's Availability is restored on a five or a ten minute interval after its loss.

I have reconfigured the thermostat and validated my Nuheat account.

I'll look in the code, but is this behavior unique to me?