The Secret Killer is SEDIMENT. It builds up in your furnace water. It can be corrosive and cause damage. Even if you properly use the water treatment, sediment can build up in your furnace water and cause problems. So, we recommend that you take the annual sediment flush each year when you collect your water sample and send to our lab.
Annual Sediment Flush For Your Outdoor Wood Furnace –
FLFA-2000 Waterless Wood Furnace
What is a Hyprotherm Hydronic Wood Furnace?
The Essential Cleaning & Maintenance Guide For Your HeatMasterss G Series Outdoor Furnace
When A Complete FLUSH Is Urgently - OutdoorBoiler.com
FLFA-2000 Waterless Wood Furnace
Simple Tips for Water Heater Maintenance
How to Winterize a House in a Day – Verde Energy
Why don't water heaters last long anymore? - Quora