Anden 5872 Cylinder/Canister Kit for AS150

The Anden 5872 Cylinder/Canister Kit is an OEM replacement canister for the Anden AS150 steam humidifier. It includes one replacement canister and one new O-ring for the drain assembly, giving you everything required to restore full output capacity when mineral buildup on the electrodes signals that the existing canister has reached the end of its service life.

Anden 5872 Specifications

The table below lists confirmed specifications drawn from the canonical product data and Anden’s published kit contents. Only values grounded in the source data are included.

Specification	Value
Brand	Anden
Part Number	5872
Compatible Humidifier Model	Anden AS150 Steam Humidifier
Kit Contents	(1) Replacement Cylinder/Canister; (1) O-Ring for drain assembly
Weight	16.0 lb (16.0144 lb)
O-Ring Lubricant Requirement	Water only — no oil, grease, or other lubricant
Part Type	OEM Replacement Canister Kit
Category	Climate & Environment / AC & Humidifiers

Why Choose the Anden 5872 Cylinder/Canister Kit

Steam humidifiers work by boiling water to release vapor into the grow room. As water boils, the dissolved minerals it carries do not evaporate — they remain in the canister. Over time, those minerals deposit onto the submerged portions of the electrodes, coating the surfaces and reducing their effective contact area with the water. The AS150 compensates by allowing the water level to rise, exposing fresh, uncoated electrode surface. Eventually the buildup becomes extensive enough that no new surface remains, and canister output drops. At that point, replacement is the only reliable path back to consistent humidity output.

The 5872 kit addresses that need directly with a complete OEM canister matched to the AS150. Key reasons to use this kit rather than continuing with a depleted canister:

• Exact-fit OEM part: The 5872 is engineered specifically for the AS150. The canister geometry, electrode configuration, and drain-fitting dimensions match the original design without modification or adapters.
• Complete kit: Includes both the replacement canister and the drain-assembly O-ring. Many canister replacements fail prematurely because the old O-ring is reused — this kit eliminates that point of failure by including a fresh seal with every replacement.
• Easy-access design: Anden designed the AS150 with canister changes in mind. The unit provides straightforward access so the swap can be completed without extensive disassembly.
• Restores full output: A fresh canister with clean, uncoated electrodes returns the humidifier to its rated steam output, maintaining the humidity setpoint your grow room requires without the unit running longer or harder to compensate for a degraded canister.
• Clear O-ring handling instructions: The kit documentation specifies dampening the O-ring with water only — no oil, grease, or lubricant — before seating it in the drain assembly groove. Using the correct seating method prevents leaks and premature O-ring degradation.

Best Uses for the Anden 5872 Cylinder/Canister Kit

This replacement kit is a consumable maintenance part for a specific piece of equipment. The situations where it applies are well defined:

• Scheduled canister maintenance on the AS150: Commercial and large-scale indoor grow operations on hard or mineral-rich water will cycle through canisters on a predictable schedule. Having a 5872 kit on hand before the existing canister reaches end-of-life prevents unplanned humidity outages during a critical growth phase.
• Restoring output after a humidity shortfall: If your AS150 is running but humidity levels are falling short of the setpoint — and the unit itself is otherwise functional — a depleted canister is the most common cause. Swapping the canister is the first corrective step before investigating electrical or controller faults.
• Post-season or post-cycle reset: Some operators replace the canister at the end of each growing cycle regardless of apparent condition, treating it as a consumable tied to the production schedule rather than waiting for visible performance decline. This approach eliminates canister condition as a variable during the next cycle.
• Preventive stock for multi-unit facilities: Facilities running multiple AS150 units benefit from keeping at least one 5872 kit per unit in inventory. Canister replacement is a predictable maintenance event, and sourcing the part on short notice during active production can cause delays that affect crop timelines.
• Grow rooms with high-mineral or hard water sources: Water with high dissolved mineral content accelerates electrode coating, shortening canister service life. Operators in areas with hard water should expect more frequent replacements and plan their parts inventory accordingly.

Anden 5872 vs Similar Replacement Canister Kits

The 5872 is a model-specific OEM part. It is designed exclusively for the Anden AS150 steam humidifier and does not have a direct third-party equivalent in the same narrow compatibility class. The relevant comparison, then, is not between competing part numbers but between using an OEM kit and attempting a non-OEM or improvised replacement.

OEM 5872 kit vs non-OEM canister sourcing: Aftermarket or non-OEM canisters — where they exist at all for this category — introduce variables around electrode spacing, drain fitting dimensions, and canister volume. Because the AS150’s water-level compensation mechanism depends on a specific canister geometry, a canister that does not match the OEM specification may not trigger the level-rise behavior correctly, leading to premature output degradation or improper drainage. The 5872 eliminates that uncertainty by using the same part geometry as the original factory installation.

5872 kit vs purchasing canister and O-ring separately: Some operators attempt to source the drain O-ring separately to reduce cost. The 5872 kit includes both items together, ensuring the O-ring specification matches the drain assembly and that the sealing surface is refreshed at the same time as the canister. If you need to replace your canister, replacing the O-ring simultaneously is the recommended practice — the kit makes this straightforward.

If you are managing grow room humidity and also need to address airflow or condensate handling, see the Ideal Air Pro Series dehumidifier replacement condensate pump for dehumidifier maintenance parts in the same climate control category.

Compatibility

The Anden 5872 Cylinder/Canister Kit is compatible with one specific model:

• Anden AS150 Steam Humidifier — This is the sole confirmed compatible unit. The canister and O-ring are dimensioned for the AS150’s electrode chamber and drain assembly.

Do not attempt to fit the 5872 canister into other Anden steam humidifier models or non-Anden units. Anden’s steam humidifier line includes multiple models with different canister specifications, and parts are not interchangeable across models. Verify your humidifier’s model number (printed on the unit’s label) before ordering.

For grow room climate control systems that include multiple components, the AS150 typically operates alongside dehumidifiers, fans, and environmental controllers. For airflow support in the same space, the Active Air HD pedestal fan is a commonly paired unit for air circulation in mid-to-large grow rooms.

Usage Guidelines

Canister service life depends on water quality and runtime hours. Understand the signs of a depleted canister and follow the handling requirements for the replacement O-ring.

When to replace the canister: As minerals accumulate on the electrodes, the AS150 compensates by raising the water level to expose fresh electrode surface. When the water level has risen to its maximum and steam output still falls short of the setpoint, the electrodes no longer have usable uncoated surface area. At this point the canister has reached end of life and should be replaced.

Visual indicators include visible heavy mineral scale on the electrodes and canister interior walls, and persistent low-humidity readings despite the unit operating at full effort. Do not continue running the unit with a fully depleted canister, as the compounding mineral load can affect the drain system over time.

O-ring handling: Before inserting the new canister, place the included O-ring into the groove in the drain assembly. Dampen the O-ring with clean water to ease seating and help it form a proper seal. Do not use oil, grease, petroleum jelly, silicone lubricant, or any lubricant other than water. Using an incompatible lubricant can cause the O-ring material to swell or degrade, resulting in a leak at the drain fitting.

Water quality note: The higher the mineral content of your water supply, the faster electrode coating will accumulate and the shorter each canister’s service life will be. Operators using water with high total dissolved solids (TDS) should track canister replacement intervals and adjust their maintenance schedule accordingly.

For grow room humidity and temperature monitoring that informs when your humidifier should be running and when conditions are within target, see the Boveda 2-Way Humidity Packs for passive humidity buffering in storage applications, or consider a dedicated environmental monitor for active grow space control.

How to Replace the Canister on the Anden AS150

The AS150 is designed for accessible canister changes. The following steps reflect the process described in Anden’s product documentation for the Model 5872 kit. Always power down and allow the unit to cool before beginning any maintenance procedure.

1. Power off and unplug the AS150. Allow the unit to cool and any residual water in the canister to drain or reach a safe temperature before opening the unit. Do not attempt canister replacement while the unit is energized or hot.
2. Access the canister compartment. Open the AS150’s access panel per the unit’s service documentation. The design is intended to provide straightforward canister access without requiring tools for the cover itself.
3. Remove the depleted canister. Disconnect the canister from the water supply and drain connections, following the procedure in the AS150 service manual. The canister will contain residual water and mineral scale — have a container and towels ready to manage any spillage.
4. Inspect and clean the drain assembly seat. Before installing the new O-ring, inspect the drain assembly groove and surrounding sealing surface for scale buildup or debris. Clean as needed to ensure a flat, clean seating surface for the new O-ring.
5. Install the new O-ring. Remove the O-ring from the 5872 kit. Dampen it with clean water only — do not use any lubricant other than water. Seat the O-ring into the groove in the drain assembly, confirming it is fully seated around the entire circumference of the groove.
6. Insert the new canister. Lower the replacement canister into the chamber, aligning it with the connection points per the AS150 service documentation. The canister should seat firmly with no gap at the drain fitting.
7. Reconnect supply and drain lines. Reattach the water supply connection and verify the drain connection is secure against the newly seated O-ring.
8. Close the access panel and restore power. With all connections confirmed, close the unit, restore power, and run the AS150 through a short cycle to verify the drain seal is leak-free and the unit is producing steam normally.

If you observe any leaking at the drain fitting after completing the replacement, power down immediately and re-inspect the O-ring seating. Confirm the O-ring was not twisted or pinched during canister insertion, and that only water was used as the seating aid.

Sources & Further Reading