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This OEM 40VA control transformer (ICP part number 1177217) steps 120V line power down to the 24V control voltage that powers your ICP/Tempstar/Heil WFEL070A024A1 furnace control board, thermostat, gas valve, and relays. A failed transformer means no 24V control power — the thermostat goes dark, the furnace won't respond to a heat call, and low-voltage components stay dead. This exact 40VA, 120V-to-24V OEM transformer restores reliable control power.
| Spec | Value |
|---|---|
| Part Number | 1177217 |
| Type | Step-Down Control Transformer |
| Rating | 40 VA |
| Voltage | 120V Primary / 24V Secondary |
| Brand | ICP (Tempstar / Heil) |
| Fitment | OEM direct replacement |
Direct factory replacement for the ICP / Tempstar / Heil WFEL070A024A1 gas furnace. The 40VA 120V-24V 1177217 transformer is common across the ICP WFEL furnace family — verify your existing VA rating and primary voltage before ordering.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.