Johnson Controls A421ABJ-02C Electronic TemperatureThe Johnson Controls A421ABJ 02C is an electronic single stage temperature control designed for precise HVAC temperature management in commercial and residential systems. This unit operates on 120 240 VAC, features SPDT outputs, UL Type 1 enclosure, and IP20 protection for indoor use. It includes a single piggy back cord and a 2m (6' 6") temperature sensor with a wide 40 F to 212 F operating range to ensure accurate monitoring across seasonal changes.

Open timing 3–25 seconds

Engineered for durability and efficient field service

ASCO 304031 Steam Valve Rebuild Kit is a dedicated maintenance solution designed to restore optimal performance of your steam valve

this 1-stage controller supports flexible installation with DIN Rail and surface mounting

Its dynamic self-checking capability continuously verifies flame presence and system integrity to maximize safety and uptime

it delivers consistent performance across seasons

this switch carries a 190°F temperature rating

The Amtrol ST-60V Thermal Expansion Tank is a vertical stand unit designed for reliable pressure management in closed potable water systems

Goodman PCBBF162S Furnace Circuit Board is the essential control module for your gas furnace

and a compact tool box to keep fasteners and small parts organized on the job

smooth fuel delivery

Inclusions: brass plug/ball/cartridge