Honeywell Resideo L7224U Oil Boiler Electronic Aquastat Control MFG# L7224U1002/

This Honeywell Resideo L7224U Electronic Aquastat Controller is a modern, UL limit-rated boiler control designed for oil-fired residential and light commercial heating systems. It provides precise electronic temperature sensingusing a single immersion probe and replaces many legacy Honeywell aquastat models.

The L7224U controls boiler temperature, circulator operation, and burner activation, while the built-in LED display and diagnostic lights provide real-time system status and troubleshooting information — ideal for technicians and installers.

Designed for flexibility, this controller supports vertical, horizontal, and flush mounting and is compatible with 3-wire EnviraCOM™ communication. When paired with an outdoor sensor, it automatically adjusts boiler setpoints based on outdoor temperature to improve efficiency and reduce fuel consumption.

Key Benefits:

• Replaces L8124A, L8124C, L714U, L7148A, L7248A/C, L7224A/C, and L8148A

• Improves energy efficiency with electronic control logic

• Simplifies installation and diagnostics

• Ideal for boiler upgrades or control replacements

Perfect for HVAC professionals, boiler technicians, and maintenance departments.

Important Notice – Propane Parts, Accessories, and Regulators

This product, including but not limited to propane parts, accessories, fittings, hoses, valves, and regulators, must be installed and serviced by a licensed professional in accordance with all applicable local, state, and federal codes, regulations, and standards.

The seller assumes no responsibility for the installation, inspection, application, maintenance, or use of this product.

It is the sole responsibility of the buyer to ensure the product is appropriate for their intended application and that it is installed correctly by a qualified individual.

Improper installation, maintenance, or use of propane products may result in serious injury, death, fire, explosion, or property damage.

The buyer accepts all risks, liabilities, and potential consequences associated with the use of this product.

By purchasing this item, the buyer acknowledges that they have read, understood, and agreed to these terms and confirm that installation and use will be conducted by a properly licensed and qualified professional.