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John HVAC/R Evacuation Quiz September 4, 2021, 7:20 pm
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A Future We Can All Hope For
We can all agree that the future we all would have expected for 2020 when we rang in the new year isn't the one we got. We are all worried and looking to hedge our bets or cut our losses in one way or another, which makes sense. Given what we now know, let's look […]Read more
What does "RES" mean on a contactor or relay?
Look closely at a contactor on your truck, and you may find some interesting ratings you never noticed—things like terminal ambient temperature ratings and torque specs. One reading you may overlook is the RES AMPACITY of the contactor or relay. The RES rating is the RESISTIVE LOAD AMPACITY (amperage capacity) or rating. Remember, a contactor and […]Read more
Electric Heat & Blower Interlock
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