Intermatic EI220W-1 In-Wall Countdown Timer Switch
- Number Of Settings: 5
- Item Weight: 0.35 pounds
- Color: White
- Screen Size: 1 inch
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A dedicated countdown switch that handles the one job of shutting a whole-house fan off automatically, with no programming or app involved.
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ASIN: B0CLKPWZ5TModel: EI220W-1Category: Outlet Timers
Overview
This is an in-wall countdown switch that replaces a standard single-pole toggle, sized specifically for a whole-house fan up to 1 HP. Press the button once to pick a runtime from 1 to 8 hours, or select HOLD for a load that should stay on continuously.
The draw for a whole-house fan is straightforward: run it for a set stretch after closing the house up for the night, then let it shut off on its own instead of relying on memory. The electronic countdown avoids the audible tick of older mechanical wall timers, and the listing marks it as a popular pick specifically for whole-house fan installs rather than general lighting.
- Countdown presets from 1 to 8 hours
- HOLD setting keeps the load on continuously
- In-wall replacement for a single-pole switch
- Electronic design, no ticking
Who it's for
Fits anyone replacing a bare wall switch for a whole-house fan, attic fan, or bathroom exhaust fan who wants an automatic cutoff without a smart home app. Not a fit if the electrical box has no neutral wire, since Intermatic specifies one is required.
Pros and cons
- One-button countdown with no app or programming
- Silent electronic timing, no mechanical tick
- Sized for loads up to 1 HP, built for whole-house fans
- HOLD mode for continuous on operation
- Requires a neutral wire at the switch box
- Decorator wall plate sold separately
- Not rated for sunlamps, saunas, or safety-critical loads
Performance notes
A single button steps through preset countdown windows from 1 to 8 hours; press again to extend, or choose HOLD for uninterrupted ON operation. Because it is electronic rather than spring driven, there is no ticking, and it is rated for incandescent, fluorescent, CFL and LED loads, while explicitly excluding sunlamps, saunas, or any load where mistimed shutoff could cause injury.
Specifications
| Brand | Intermatic |
|---|---|
| Model | EI220W-1 |
| Dimensions & fit | |
| Item Weight | 0.35 pounds |
| Screen Size | 1 inch |
| Item Dimensions D X W X H | 1.4 × 4.1 × 1.7 inches |
| Construction & materials | |
| Color | White |
| Included components | |
| Unit Count | 1 |
| Other details | |
| Number Of Settings | 5 |
| Number Of Items | 1 |
| Item Highlight | Countdown Auto-Off Control Sized For Whole-House Fans, Easy In-Wall Install With Clean White Styling |
Frequently asked questions
Does the Intermatic EI220W-1 need a neutral wire?
Yes, Intermatic specifies a neutral connection is required for this in-wall switch to operate.
What is the maximum motor size the EI220W-1 can handle?
It is sized for loads up to 1 HP, which covers most whole-house fan motors.
Can the EI220W-1 be used with a sunlamp or sauna heater?
No, Intermatic excludes sunlamps, saunas, and other loads where an incorrect shutoff time could cause injury.