Both the heating and cooling valves of a fan-coil are open at once.
Both the heating and cooling valves of a fan-coil are open at once.
The coils fight each other — the same waste as an AHU with both valves open, multiplied by every fan-coil doing it.
Check the fan-coil controller deadband and changeover logic; verify both valves seat.
How Energy Agent prices a finding
Estimate the energy spent fighting yourself.
Enter positive numbers to see an estimate.
Cooling that only exists to cancel heating (and vice versa) is priced on both sides: chilled water at your kW/ton and rate, heat at your boiler efficiency and gas price, for the hours the overlap lasts. Energy Agent finds the overlap in valve and coil trends.
Screening estimate. Energy Agent measures the real fault hours and load from your trends and prices them at your tariff.
Screening-level estimates; confirm with measurement and verification before capital commitment.
The coil valve is closed but the discharge air is still well away from the zone temperature.
The fan runs unoccupied with the valve closed, or the valve opens while the fan is off.
CO₂ is far below the demand-control setpoint while the outdoor-air damper is wide open.
CO₂ stays above the comfort / code limit while the space is occupied.
Send twelve months of interval data and a BAS trend export. Energy Agent returns a ranked list of what is wasting money, what each item is worth per year at your tariff, and what to do about it.
