[ceh]

wont to install 45 btu gas furance in basement. running the ex flue thur wall running 7ft high . the wall is wood and vinyl. cut 3 inch hole. will have too build fire brick around flue. runnug it out 24 inches and 24 up with a 90 and turn with a 90 is this good

 

[hvac122]

What efficiency is the furnace? PVC vent or metal?