Google product taxonomy · 2021-09-21
Water Heater Stacks
The Google product category ID for Water Heater Stacks is 2221, written as a path "Home & Garden > Household Appliance Accessories > Water Heater Accessories > Water Heater Stacks". It is a leaf: the taxonomy does not continue below it, so this is the most specific value on this branch, and if your product fits here there is nothing more precise to pick. It sits under Water Heater Accessories.
- Category ID
- 2221
- Subcategories (none, this is a leaf)
- 0
- Categories below it in total
- 0
- Depth, on a branch that runs 4
- 4 / 4
- Others at this level
- 6
- Parent category
- Water Heater Accessories
- Taxonomy version
- 2021-09-21
- Sent in your feed as
- google_product_category
Where this sits in the taxonomy
Measured by how much sits beneath them, Water Heater Stacks is fifth largest of the 7 categories under Water Heater Accessories, with 0 categories below it. Size is not correctness — a small category is the right answer when it is the right answer — but it does tell you how much of the taxonomy you are still choosing between once you pick this branch.
| Category | ID | Direct | Below | Levels |
|---|---|---|---|---|
| Water Heater Vents | 1709 | 0 | 0 | 0 |
| Water Heater Elements | 1744 | 0 | 0 | 0 |
| Water Heater Pans | 1835 | 0 | 0 | 0 |
| Hot Water Tanks | 2175 | 0 | 0 | 0 |
| Water Heater Stacks — this page | 2221 | 0 | 0 | 0 |
| Anode Rods | 2310 | 0 | 0 | 0 |
| Water Heater Expansion Tanks | 500063 | 0 | 0 | 0 |
Using this value
Either form of this value goes in the google_product_category attribute: the numeric ID (2221) or the full path ("Home & Garden > Household Appliance Accessories > Water Heater Accessories > Water Heater Stacks"). Both are predefined values for the same category. The ID is the sturdier of the two, because renaming any segment above this one changes the path text and leaves the number alone.
Bear in mind that google_product_category is an optional attribute. Google assigns a category automatically, and your value is treated as a signal rather than an override. When an override actually applies.
In your feed, it looks like this
Either row below is accepted. The first is the one to send.
| id | title | google_product_category |
|---|---|---|
| SKU-1001 | Your product title | 2221 |
| SKU-1001 | Your product title | Home & Garden > Household Appliance Accessories > Water Heater Accessories > Water Heater Stacks |
This path has no comma, so an unquoted cell holds it as it stands — which is not true of every category in the taxonomy. The numeric ID, 2221, is the form that does not depend on how the file is quoted.
Easy to mix up with
These sit under the same parent and start with the same word, which is exactly when the wrong one gets picked.
Questions about Water Heater Stacks
What is the Google product category ID for Water Heater Stacks?
2221. The full path, "Home & Garden > Household Appliance Accessories > Water Heater Accessories > Water Heater Stacks", is the same category written the other way. The ID is shorter, and renaming a segment above this one changes the path text while leaving the number alone.
Is anything more specific than Water Heater Stacks available?
No. Water Heater Stacks is a leaf of Google's taxonomy at level 4, so 2221 is the most precise value this branch offers. If it does not describe your product closely enough, the answer is a different branch, not a deeper one.
Where does Water Heater Stacks sit in the taxonomy?
At level 4, under Water Heater Accessories (2751). The chain from the top is Home & Garden → Household Appliance Accessories → Water Heater Accessories → Water Heater Stacks. If your product does not belong under Water Heater Accessories, it does not belong here either — check the level above before going deeper.
What should I use if Water Heater Stacks is not quite right?
Look across the rest of Water Heater Accessories first — there are 6 other categories at this level: Anode Rods (2310), Hot Water Tanks (2175), Water Heater Elements (1744), Water Heater Expansion Tanks (500063), Water Heater Pans (1835), Water Heater Vents (1709). If none of them fits either, the problem is higher up: go back to Water Heater Accessories (2751) and pick a different branch from there rather than settling for the closest thing on this one.
How big is Water Heater Stacks compared with the categories next to it?
It is fifth largest of the 7 at its level, carrying 0 categories below it. A bigger category is not a better one — it just means more of the taxonomy is still open below you after you pick it.
What is the difference between Water Heater Stacks and Water Heater Elements?
They sit side by side under Water Heater Accessories and start with the same word, which is why they get swapped. Water Heater Stacks is 2221; Water Heater Elements is 1744. The paths are the reliable way to tell them apart — compare "Home & Garden > Household Appliance Accessories > Water Heater Accessories > Water Heater Stacks" with "Home & Garden > Household Appliance Accessories > Water Heater Accessories > Water Heater Elements" before you submit.
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