Five of the gas water heaters were linked to a recent burglary in Papakura, as the owner had recorded the serial numbers and provided them to police.
The gas water heaters were returned, with police working to identify the owners of the remaining items.
Nelson said the recovered items are frequently targeted by thieves, with this case being a timely reminder for the public to keep a record of their property.
“Record the serial numbers of tools and valuable items, or mark these with an identifier that can be traced to your property.
“This can help police return your items if they’re stolen by thieves.”
A 44-year-old woman will appear in Papakura District Court on May 28, charged with burglary.