when you need a reliable replacement for your HVACR systems

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biodegradable oil for superior heat transfer and internal self-healing properties

Broad Compatibility: Integrated system sensor for Lochinvar Knight and A

this valve body facilitates precise flow control when paired with Danfoss thermostatic operators

Lennox 67K66 Heat Relay 30067439-890 when you need a reliableThe Lennox 67K66 Heat Relay is a heavy duty 24V 3PDT relay engineered for precise load management in Lennox residential and commercial heating equipment. Operating with a 24VAC control signal, this Triple Pole Double Throw (3PDT) component provides the necessary switching capacity to handle multiple high voltage circuits simultaneously, common in complex air handler and furnace configurations. As a direct replacement for Lennox 67K6601 and 58C9901, it