WHAT DOES COPYRIGHT SIDE EFFECTS MEAN?

An electrical furnace just has blower at the bottom and features and can't operate in tandem using a heatpump to supplement, because the heatpump's insert on coil is downstream on the furnace. Really have to shut down heatpump for elements to come back on with An electrical furnace and increase-on coil, not a great way to do it.copyright is actuall