Can you use Mysa with 4000W systems?

No! Mysa is specifically rated to handle up to 3800W. If you exceed this limit there is a risk of electrical issues, device failure, or even fire. So please do not exceed 3800W. If you’re not sure what your heating system is rated for, here’s a blog that explains how to measure your wattage.

Are you ever going to put out a thermostat that can handle 4000W or more?

It’s not currently in our plans. The vast majority of electric heat systems installed domestically are under our 3800W limit.

Can’t find your answer in our support center? Contact us directly.