Mysa is great in an open concept layout! You may have multiple heaters connected to a Mysa thermostat, but ensure that the total wattage connected to each thermostat does not exceed 3800W.
With an open concept, creating zones is be quite useful for the homeowner. You can create one heating zone for the entire space and easily control all of the heaters together from your smartphone.
Please reach out to our team if you have any further questions!