California Residents: This product contains materials known to the State of California to cause cancer and/or reproductive harm

the RV-4 series is specifically engineered to provide automatic control for one-pipe steam radiators through efficient air venting when paired with the correct thermostatic operator

This genuine York part is critical for maintaining the operational integrity and fire safety compliance of commercial HVAC equipment

the Q101 protects the heat exchanger and improves airflow delivery across the coil

the switch should show continuity (0 ohms)

Advanced Distributor Products 76726700 Sequencer R-134A California Residents: This product containsThe Advanced Distributor Products 76726700 Sequencer is a precision engineered control component designed to coordinate the electrical staging of heating elements, blowers, and compressors. By managing the power on and power off cycles, this HVAC sequencer replacement prevents sudden electrical surges that can lead to circuit breaker trips or system overloads. Built with a 24V control circuit, it features programmable delays that allow multi stage