Defrost Timer Calculator
Calculate heat pump defrost cycle timing, frequency, and energy impact.
Defrost Control Types
| Type | Description |
|---|---|
| Time-Temp | Initiates by time, terminates by temp |
| Demand | Sensors detect frost, optimizes cycles |
| Time-Only | Fixed intervals regardless of frost |
Frost Formation Guidelines
Heavy Frost: 32-40F with high humidity (>70%)
Moderate Frost: 25-35F with moderate humidity
Light Frost: Below 25F (low moisture in cold air)
No Frost: Above 45F or below 0F