Why does our commercial HVAC system run constantly after business hours?
Your HVAC runs after hours because the thermostat schedule is wrong, the economizer damper is stuck open, or a faulty occupancy sensor…
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Practical, step-by-step fixes for industrial & workplace energy problems — 68 published so far.
Your HVAC runs after hours because the thermostat schedule is wrong, the economizer damper is stuck open, or a faulty occupancy sensor…
See the fixYour HVAC likely runs after hours because the thermostat schedule is misconfigured, the economizer is stuck open, or the building automation system…
See the fixYour HVAC likely runs after hours because the thermostat schedule is wrong, a sensor failed, or the economizer is stuck open —…
See the fixYour HVAC likely runs after hours because the thermostat schedule is misconfigured, a override button was left on, or the building automation…
See the fixYour HVAC likely runs after hours because the thermostat schedule is misconfigured, an override is stuck, or the building automation system has…
See the fixYour compressor trips the breaker on startup because its motor draws 5-7 times its running current for a few seconds, exceeding the…
See the fixYour equipment is tripping the breaker because it's drawing more current than the circuit is rated for, or because the breaker itself…
See the fixYour demand charge spikes because your peak 15-minute kW draw coincides with the utility's highest-rate period, usually hot afternoons when HVAC and…
See the fixYour summer bill spikes because utility demand charges penalize the highest 15-minute power draw, which rises when HVAC runs harder in heat,…
See the fixSummer bill spikes usually come from HVAC systems running longer to combat heat, increased lighting hours, and higher utility rates during peak…
See the fixA dropping power factor means your equipment draws more reactive power, so the utility charges penalties for the extra current on their…
See the fixCompressed air systems waste energy mainly through leaks, excessive pressure, and improper sizing — leaks alone can squander 20-30% of compressor output.…
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