I have 4 small bedrooms (1 x 120 sq ft each, 3 x 100) that I want to install HBB electric/hydronic baseboard heaters by QMark. I have some experience installing one of these units in my previous home and that went well. However, my question is whether I can install these 4 units on a single thermostat (thermostat to be located in one of the 4 bedrooms on wall opposite the window/baseboard heater unit).

Is this possible? If it helps, the bedrooms are 2x2 with hallway separating them.

I am considering 1x6ft unit, and 3x4ft units.

Thank you, Jay

Why would you want to?
What about a t-stat right on the heater?

Most electric heat thermostats can handle 22 amps. That's 5280 watts worth of heat.