Summer Intake Temps That Quietly Kill Hashrate
What we measure when Changwon warehouses hit 28°C—and why distributor specs ignore it.
Distributor datasheets assume 25°C intake. Gyeongsang warehouses in July rarely cooperate.
The Pattern We See
Units that pass morning soak tests throttle by afternoon when rollup doors stay open for maintenance crews. The hashrate drop looks like pool variance until you overlay intake probe readings.
Three Fixes Worth Testing Before Refresh
- Baffle intake paths so hot exhaust recirculation does not feed the front fans.
- Raise nominal fan curves in firmware only after confirming PSU headroom—spikes matter more than averages.
- Schedule soak tests across a full weekday, not a quiet Sunday when doors stay shut.
When to Walk Away From a Model
If a unit loses more than eight percent hashrate at 28°C intake while staying within wattage cap, we flag it for shortlist removal unless you plan dedicated ductwork. Refresh budget should not silently become HVAC budget.
Closing Thought
Thermal fit is boring until your PO arrives and August does. Measure it before you sign.