Now that the weather is warming up, you may be thinking about what you need to do to shut down your furnace for the summer. This information is in your manual, but we wanted to make sure it was at your fingertips! It's just a few simple steps... 1. Remove all ashes and excess creosote from the firebox, lower combustion chamber, heat exchange tubes and chimney, 2. Check all gasket seals and make sure there are no leaks then tighten the firebox door by adjusting the hinges. 3. Cover chimney and crack open the bottom door to allow air movement and to reduce condensation within the firebox. 4. Make sure your water tank is full and that you have your water treatment tested and adjusted to the specifications in the manual. 5. Change your water filter cartridge 7. If desired, wash the exterior of the furnace.