- Showing 1 - 36 out of 158 results for "rheem residential gas water heater, 50.0 gal tank capacity, liquid propane, 36,000 btuh - water heaters model prog50-36p rh60"Sort by:Price - Low To HighProduct added to your wishlist! View wishlistSign in to see your saved products on any deviceProduct removed from your wishlist! View wishlistSign in to see your saved products on any deviceSomething went wrong. Please try again later.Product is added to compare already. Please refresh the page.Product is not found in compare. Please refresh the page.5 Products already added. Please delete existing selection to add this.