Re: Stock Heaters???
I would think you would need the front heater for defrosting. My bus has two heaters in the front and one in the back. Each front heater serves 1/2 of the windshield, so you need them both for defrosting. If you want to eliminate the rear heater, you could just loop the hose. I plan on keeping my rear heater for two reasons: 1. heat when driving, and 2. emergency engine cooling. I plan to locate it in such a way that I can choose (by moving a small sliding door) whether it will heat the interior of the bus, or blow outside the bus. My engine tends to get hot when hill climbing in hot weather. If I turn on the rear heater, it cools the engine down by an additional 10-20 degrees. If you choose to eliminate the heater by looping the hose it will not adversely affect the normal operating temperature of the engine, but you would lose the opportunity to add extra cooling when needed.