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ChemWorld Knowledge Base:  
What chemicals do I use for my Outdoor Wood Boiler?
Last Updated: 08/30/2013
What chemical do I use to protect my wood boiler against corrosion?
Chemworld has a product referred to as ChemWorld 830. This product is designed to minimize corrosion for all common metals used within outdoor wood boilers from corrosion. This includes copper, iron, steel, stainless steel, and aluminum.

How much do I add?
Roughly, one gallon treats 250 to 500 gallons of fresh water.

Is it compatible with my existing chemical in my boiler?
Although we do not recommend mixing chemicals, it is most likely compatible. You may consider dumping the  water before using the boiler chemical.

How often do I need to replace the chemical?
The base corrosion component is nitrite with this chemical. It takes 5 to 7 years for nitrite to convert to nitrate. When this occurs the system should be emptied and the chemical should be replaced.

What kind of antifreeze do you recommend for our boiler?
Inhibited propylene glycol is the most popular chemical used as an antifreeze. You may purchase our 95% glycol and dilute with good city water or water with a hardness of less then 100 ppm to a 40% solution. This will provide protection to -40F.

For more information regarding this chemical, visit the 1 gallon boiler chemical product page link.

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