The flue is there to direct the carbon dioxide to the outside of the building, if this does not happen the geyser is fitted with a sensor that will shut down the geyser within 4 minutes. This is a safety feature.
When installing the geyser on the outside the use of a flue will give it a better draft, thereby improving performance.
Cap/Cowl helps protect geyser from foreign objects landing in the geyser and birds nesting
R26.20–R47.00Price range: R26.20 through R47.00 incl VATSelect options
This product has multiple variants. The options may be chosen on the product page
R95.00–R105.00Price range: R95.00 through R105.00 incl VATSelect options
This product has multiple variants. The options may be chosen on the product page