Wood Fired 6 person Hot Tub | Hud-1 EZ Buildings Building your own Wood Fire Hot Tub will come ready to use based on your specifics. With the fiberglass liner which makes the hot tub extermly easy to clean and drain. All of our hot tubs have the rounded design, you choose the decorative exterior look. The our Wood burning fire place offers a much faster heating time heats within 1 1/2 - 2 hours. After completing your build you will be ready to enjoy hours of relaxation.