Our house is about 34 years old, and was built with radiant baseboard heaters. This summer we had a heat pump and whole-house air and heat put in. Taking out the old heaters is no problem (they are already disconnected).
However - when I take the thermostats off the wall, I will have an empty metal fixture box in the drywall. How do you remove or cover this, without replacing a large section of wall ??