Hopefully it’s air in the system but Joule engineer tells me that they’d see flowmeter indicator bobbing up and down a bit if it was air?? Would that really be the case??
Thermostat calls, valves open at manifold and supply and return feel warm once valve opens. But thermostat only gets to about 22.3 degC (but floor is still really cold compared to hallway right beside it) and it seems it can’t get room any hotter than that temp. Because it can’t reach set point of about 23deg it keeps calling for heat and it’s only thermostat in house that keeps air to water pump running outside then. That’s driving electricity bill through the roof but rooms still can’t get warm.
im really hoping it’s just air.
Rest of house is perfect, floor nice and toasty etc.