Jack Murdock
Silver Member
Yes you can change out the orifices, and a kit for the regulator, or you could just drill the orifices .
Propane burns at about 11''wc nat. gas would burn around 3.5'' wc after going through the regulator in the gas valve
Good thing about a condensing unit is. They use less gas, and can be vented with PVC terminated just outside the wall, or through the roof which is cheaper, and easier than running metal dw vent through the roof
Buy the conversion kit you should not and cannot drill the orifices when going from nat to lp since LP orifices are smaller than natural gas because the inlet pressure is higher. Conversion kits are very inexpensive and then you have the factory instructions and sticker regarding the conversion. Just my .02