Why does our HVAC keep running after hours and running up our energy bill?
Your HVAC is likely running after hours because a programmable thermostat is misconfigured, an occupancy sensor is faulty, or a stuck relay/contactor…
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Industrial & Workplace Energy
Practical, step-by-step fixes for industrial & workplace energy problems — 68 published so far.
Why does our HVAC system run after hours driving up costs?
Your HVAC runs after hours because the thermostat schedule is wrong, the building management system has an override, or a faulty occupancy…
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Why does our HVAC system run constantly after business hours and spike our energy bill
Your HVAC likely runs after hours because of a misprogrammed thermostat, faulty occupancy sensor, or stuck relay keeping the system in occupied…
See the fixWhy does our HVAC system run constantly after hours and spike our energy bill?
Your HVAC likely runs after hours because the thermostat schedule is wrong, a faulty sensor keeps calling for heating or cooling, or…
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Why does our main breaker trip when the air compressors start up?
Your main breaker trips because the combined inrush current from multiple air compressors starting simultaneously exceeds the breaker's instantaneous trip threshold, especially…
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Why does our packaging line conveyor keep tripping the 20-amp breaker every afternoon?
Your conveyor likely trips the breaker because afternoon heat raises motor current above the 20‑amp limit, especially if the circuit also feeds…
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Why does our warehouse HVAC keep running after closing time?
Your HVAC runs after hours because the thermostat schedule is wrong, a faulty sensor keeps calling for cooling, or the economizer damper…
See the fixWhy does our warehouse LED lighting flicker when the forklift chargers start?
Flickering warehouse LEDs when forklift chargers start usually means the chargers' inrush current causes voltage sags on a shared circuit. The fix…
See the fixWhy does our warehouse lighting flicker when heavy machinery starts up?
Flickering lights when large motors start usually means voltage drops from inadequate wiring, undersized transformers, or loose connections that can't handle the…
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Why is my commercial electricity bill so high when we didn't use more power?
Most likely, your bill charges you for demand, not just usage. Demand charges bill you for the single highest 15-minute power draw…
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Why is our commercial electric bill's demand charge so high this month?
Your demand charge spikes because multiple high-power machines start simultaneously, creating a short 15-minute peak that sets the monthly rate. Check your…
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Why is our commercial electricity bill still high after upgrading to LED lighting?
Your bill stays high because demand charges — fees for your peak 15-minute usage — often outweigh lighting savings, and hidden loads…
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