800 Replacement Canister for AprilAire Steam Humidifier Model 800

In this review of the 800 Replacement Canister for AprilAire steam humidifier models 800 and 865, the bottom line is simple: it is a practical, low-friction replacement for anyone who wants to restore steam output and maintain whole-house humidity during the heating season. The reviewer found the canister best suited to homeowners and HVAC caretakers who replace the canister annually to avoid clogging and degraded performance. The single biggest reason to buy is its straightforward fit and heat-resistant housing that keeps a steam humidifier working reliably when the weather is dry.

Key Features

• Direct fit: Designed as a direct replacement for AprilAire models 800 and 865, so installation aligns with the original canister layout and connections.
• Heat-resistant housing: The upgraded material tolerates high temperatures to prevent deformation and keep the steam process stable during heavy use.
• Annual maintenance benefit: Replacing the 80 canister each year helps prevent internal clogging and rust on heating elements, improving humidifier longevity.
• Improved indoor humidity: The canister produces steam that helps maintain optimal whole-house moisture levels for better breathing and skin comfort.
• Leak-proof connection: Includes an O-ring seal and top steam hose connection to reduce the chance of leaks when installed correctly.
• Simple installation: The canister is designed to be swapped without special tools; check electrode wires and secure the steam hose for a tight fit.

Who It's For

This replacement canister is aimed at homeowners, property managers, and HVAC technicians who maintain AprilAire 800 or 865 steam humidifiers and want a cost-effective way to restore factory-style steam output. It suits those who perform annual humidifier upkeep and prefer a straightforward, tool-free swap to reduce downtime in winter months.

It may not be the best choice for systems that require a branded OEM part for warranty reasons or for users who need a canister with custom or extended-life materials beyond the stated heat-resistant housing; such buyers should check warranty terms or consider OEM options.

Pros & Cons

Pros

• Compatible direct-fit design makes replacement fast and predictable.
• Durable, heat-resistant material reduces risk of deformation under high temperature.
• Improves humidifier performance by preventing clogging and protecting heating elements.

Cons

• Some customers report mixed impressions of product quality compared with OEM, so expectations should be tempered.

Specifications

Compatible Models	AprilAire 800, 865
Pack Quantity	2 PCS
Canister Type	80 replacement canister
Material	Heat-resistant housing
Seal	O-Ring leak-proof seal
Installation	Tool-free, top steam hose and electrode wire connections

Our Verdict

The 800 Replacement Canister is a practical, affordable maintenance part for anyone running an AprilAire 800 or 865 steam humidifier who wants to restore proper steam output and protect heating elements. It delivers real value when used as an annual replacement, offering improved humidity control and simpler upkeep compared with leaving an old, clogged canister in service.

Frequently Asked Questions

Is this canister compatible with my AprilAire 800?
Yes, it is designed as a direct 80 canister replacement compatible with AprilAire models 800 and 865.

How often should the canister be replaced?
The reviewer recommends replacing the 80 canister annually to prevent clogging and maintain optimal performance.

Do I need special tools to install it?
No special tools are required; check the electrode wires and secure the top steam hose and O-ring for a snug, leak-resistant connection.