80 Canister Substitute for Aprilaire 800 Replacement Canister

In this review the reviewer examines the 80 Canister substitute for the Aprilaire 800 series and explains why it is a straightforward replacement for many whole-house steam humidifiers. The bottom line: this two-pack replacement is aimed at homeowners with 208V/240V humidifier systems who want a reliable, OEM-compatible canister that restores steam output and keeps a humidifier running at peak performance. It is an easy swap for models listed and performs as expected when the water conductivity and voltage match the 80 canister requirements.

Key Features

• Wide compatibility: Fits Aprilaire 800, 801, 865, and 866 humidifiers so it covers several common whole-house steam models.
• Designed for 208V/240V systems: The 80 canister is intended for typical water conductivity and 208V/240V applications to ensure correct steam production.
• Durable construction: Made from food-grade ABS plastic for heat resistance and long-term stability under repeated heating cycles.
• Simple maintenance: Annual replacement is recommended and the package includes a drain plug and O-ring to reseal the unit during service.
• Clear replacement guidance: The listing warns that the 80 and 80LC canisters are not interchangeable and explains when each model should be used.

Who It's For

This replacement 80 canister is best for homeowners or HVAC technicians who operate an Aprilaire 800, 801, 865, or 866 whole-house humidifier on 208V/240V power and who have typical water conductivity. It suits people who prefer to replace the canister annually to avoid sediment buildup and maintain consistent steam output.

It is not for users with low-conductivity water (below 300 uS/cm) or those running 120V systems; those users should seek the 80LC-rated canister. Also, buyers should confirm their humidifier model number and test water conductivity before purchase to avoid the wrong part choice.

Pros & Cons

Pros

• OEM-fit substitute for multiple Aprilaire models, restoring proper steam performance.
• Food-grade ABS construction resists heat and deformation for reliable service life.
• Package includes drain plug and O-ring for a leak-proof seal and easier installation.

Cons

• Only suitable for 208V/240V and typical water conductivity; not compatible with 80LC or 120V systems.
• Service life depends on local water quality and requires yearly replacement for best results.

Specifications

Part type	80 steam canister substitute for Aprilaire 800
Compatible models	Aprilaire 800, 801, 865, 866
Voltage application	208V/240V
Material	Food-grade ABS plastic
Package contents	80 canister, drain plug, O-ring (2 pack)
Replacement cycle	Approximately once per year (varies with water conductivity)

Our Verdict

For owners of Aprilaire 800-series humidifiers on 208V/240V systems, this 80 canister substitute is a practical, cost-effective way to restore steam production and protect indoor humidity control. It delivers reliable construction and includes the small parts needed for installation, but buyers must confirm voltage and water conductivity before choosing it over the 80LC option.

Frequently Asked Questions

Is this canister compatible with all Aprilaire 800-series models?
It fits Aprilaire 800, 801, 865, and 866 models when used in 208V/240V applications and with typical water conductivity.

Can I use this in a 120V system or where water conductivity is low?
No. The 80 canister is intended for 208V/240V and typical conductivity; low-conductivity or 120V systems require the 80LC version.

How often should the canister be replaced?
The recommended replacement cycle is about once per year, though sediment and local water conductivity can shorten or lengthen that interval.