Heating not working on split system

Steve Armitage requested 3 quotes from Heating Professionals in Osullivan Beach

it is a split system - cooling is fine but the heating side is not working

Fire box in wood burner restored
The fire bricks in the fire box are in need of replacement.

Celair Aztec gas heater. The low and mediup fan settings do not work.
The heater shuts down after 5 minutes (presumably overheats) if the fan...

Repair rinnai gas heater
It turns off after an hour of operation and cant be lit for another hour all...

New thermostat ? on vulcan quasar wall gas heater.
fan cuts off after about 5 minutes, pilot light goes out. heater turns off...