Are you asking for the AC/heat pump or the propance furnace?
If the ac/heat pump I just finished removing mine to replace a bushing on one of the fans. This link really helped
Winnebago Owners Online Community > WINNEBAGO TECH & TOW > General Maintenance and Repair Basement A/C Removal & Outdoor Blower Replacement Procedure
Once you let us know what heater you are talking about we can get more specific.
07 Meridian 36G
Roadmaster tow dolly
Great Wife!! & Max the Frisbee chasing dog.