Anden Low Conductivity Steam Canister & O-ring

Low-Conductivity Steam Canister for the Anden AS35 and AS35FP

Anden's electrode steam humidifiers generate steam by running current through water inside a replaceable canister, and that canister mineralizes over time as it boils — it's a scheduled wear part, not a permanent component. Anden sells two versions of the AS35FP's canister, split by the conductivity of the water feeding the unit, since that conductivity level determines which canister design generates steam correctly.

The AS80LC canister is built for lower-conductivity water — under 300 µS/cm — or for 120VAC installations, and fits both the AS35 and AS35FP humidifier models. Softened water isn't compatible with either canister option and should be avoided.

Key Features & Benefits

• Direct Replacement Canister — Matched to the Anden AS35FP steam humidifier's canister housing.
• Includes O-Ring — Ships with the O-ring needed for a sealed installation, not just the canister alone.
• Conductivity-Matched Design — Built for water conductivity below 300 µS/cm, or for 120VAC installations.
• Scheduled Wear Part — The canister mineralizes as it boils water, so periodic replacement is expected maintenance.
• Seasonal Replacement Recommended — Replacing at the start of each heating season keeps steam output consistent.

Which Canister Do I Need

This part fits the Anden AS35FP steam humidifier specifically. Match it to your water supply's conductivity rather than assuming either version is a universal fit — the wrong canister for your water conductivity can mean inconsistent steam output.

Water Conductivity and Canister Selection

Electrode steam canisters work by passing current through the water itself, so the water's electrical conductivity — driven by its dissolved mineral content — determines how well a given canister design generates steam. Anden splits its AS35FP canister line into a low-conductivity version for water under 300 µS/cm (or 120VAC installations) and a standard version for water above that threshold. Using the wrong canister for your water's conductivity can mean inconsistent steam output or premature canister failure.

Frequently Asked Questions

What models does this canister fit?

The low-conductivity canister and O-ring fit the Anden AS35 and AS35FP steam humidifier models. It includes the O-ring (part #5258) along with the canister, so both wear components are replaced together.

How do I know which canister my system needs?

Check your water supply's conductivity rating — if it's below 300 µS/cm, or if the installation runs on 120VAC, the low-conductivity canister (DH4480LC) is the correct match. Standard water above 300 µS/cm calls for the standard replacement canister (DH4AS80) instead.

How do I install the new canister and O-ring?

Dampen the O-ring with water before inserting it — never use oil or lubricants, which can degrade the seal material. Follow Anden's installation instructions for seating the canister correctly in the humidifier housing.

How often should I replace the canister?

Anden recommends replacing the canister at the start of each heating season for consistent performance, since mineral buildup accumulates gradually as the canister boils water over a season of use. Waiting until steam output visibly drops means running at reduced capacity in the meantime.

Can I use this with softened water?

No, Anden specifies not to use this canister with softened water. Softened water's mineral profile isn't compatible with either the low- or standard-conductivity canister design, and using it can lead to inconsistent steam output or canister damage.