What does this mean to you?

My FW is a 4-season unit, and is actually insulated quite well. It is by far the most quiet of 4 owned, and heats/cools easily. It does have it's weak areas, such as low point drains, fresh water tank drain exposed, and outside shower, that is not in heated basement. I've also used foam pipe wrap on the low pts, and fresh tank drain hose, when night time temps dropped to around 20F. Where I live, Winter temps often hit -20F, and can get -30 or lower. I think mine is a 3-season in my area. I do like that mine has heat vent routing running through kitchen cupboards, near basement plumbing, and even along side of water pump. Of course there is also the added vent from furnace to warm entire tank area.

A true 4-season??? NO, but by design, an obvious attempt was made to get as close as possible.

Jerry