Intermatic WH40 Electric Water Heater Timer, Gray | Up to 26% Energy Savings

Meet the Intermatic WH40: Smart, Steady Hot Water Control

The Intermatic WH40 is a compact, steel‑bodied timer designed to automate your electric water heater with reliable precision. Housed in a durable gray cabinet, this timer integrates with your setup to manage when hot water is heated, helping you tailor usage to your daily routine. With a classic control dial and practical external override switch, it’s easy to adjust on the fly while keeping the primary scheduling intact.

Designed for homeowners who value predictable hot water without constant fiddling, the WH40 offers flexibility and control. It supports standard electrical loads and aligns with common safety standards, giving you a straightforward path to smarter energy use. Rather than promising dramatic changes, the WH40 suggests a sensible approach to timing that can fit a variety of routines—from morning showers to evening dishwashing—while empowering you to revisit schedules as needs evolve.

Core specifications at a glance

• Power rating: 10,000 watts, 40 amps, 250 volts, 60 Hz
• Enclosure: steel case for lasting durability
• Dimensions: 5-1/8 in W × 3-7/16 in D × 7-7/8 in H
• Approvals: UL and CSA (Canada and US)
• Minimum on/off times: 1 hour
• Trippers included: three sets for flexible scheduling

Why people consider the WH40

The WH40 is sometimes described as a practical enhancer for home water-heating routines. By timing when the heater runs, you can align hot water availability with your day, reducing energy waste and keeping hot water ready when you need it. The unit’s steel construction and external override switch add reassurance and convenience, especially in busy households where schedules shift.

Key benefits you might notice include simpler control over hot water timing, the ability to preheat for predictable morning use, and the option to override auto-scheduling when circumstances change. While results vary with usage patterns, many users find that a well-timed schedule can support a more consistent hot water experience without changing daily habits dramatically.

What’s included and how it helps

• Three trippers allow morning and evening adjustments to fit typical hot-water needs
• External override switch provides quick manual control without rewiring
• Durable steel case stands up to daily use in busy homes

In sum, the Intermatic WH40 offers a disciplined, adjustable approach to hot-water heating. It’s sized for standard installations, backed by certifications, and designed to be easy to use, whether you’re upgrading an existing setup or installing a timer for the first time. Consider it a practical tool for refining when your hot water is heated while staying grounded in real-world usage.