Why does our commercial HVAC system run constantly after hours and spike our energy bill?
Your HVAC likely runs after hours because the thermostat schedule is wrong, a sensor failed, or the economizer is stuck open —…
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Practical, step-by-step fixes for industrial & workplace energy problems — 63 published so far.
Your 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 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.…
See the fixYour HVAC is likely running after hours because a programmable thermostat is misconfigured, an occupancy sensor is faulty, or a stuck relay/contactor…
See the fixYour HVAC runs after hours because the thermostat schedule is wrong, the building management system has an override, or a faulty occupancy…
See the fixYour HVAC likely runs after hours because of a misprogrammed thermostat, faulty occupancy sensor, or stuck relay keeping the system in occupied…
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