Ceramic space heaters?
OR LED RV fireplace by Therma Heat.
Installing a higher btu furnace would require additional duct work which is difficult to run ducts after rig is built.
IF you were doing a remodel or rebuild then maybe.
Is it time for your medication or mine?
2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31