The biggest utility drains in most homes are HVAC, water, and phantom electricity. We tested smart sprinkler controllers and energy monitors that tackle all three — with real savings you can measure.
Most of us don't think about our utility bills until they arrive. But the three biggest drains — heating and cooling, outdoor watering, and the constant trickle of "vampire" power from idle electronics — are all things smart home devices can actually fix.
The trick is picking the right ones. Here's what we found.
If you have a lawn or garden, your irrigation system is probably wasting water. Traditional controllers run on a timer — rain or shine. Smart controllers like the Rachio 3 and Orbit B-hyve connect to hyper-local weather data and adjust schedules automatically, skipping watering when it's rained or forecast to rain.1
The Rachio 3 is the gold standard here. It pulls from thousands of local weather stations to build a watering plan that's specific to your yard's soil type, sun exposure, and slope. Wirecutter calls it the best smart sprinkler controller for good reason: it's the only one that handles complex, multi-zone properties without fuss.1
For a more budget-friendly option, the Orbit B-hyve delivers similar weather-smart scheduling at roughly half the price. It won't handle as many zones or as granular a schedule as the Rachio, but for a typical suburban lawn it's more than enough.
While water savings show up on the next month's bill, electricity savings from smart monitoring take a bit longer to materialize — but they add up. The Emporia Energy Monitor clamps onto your main breaker panel and tracks every circuit in real time. You see exactly which appliances are drawing power, when, and how much it costs.2
The real win here is identifying the "always on" loads you don't notice: the old second fridge in the garage, the entertainment system in standby, the well pump cycling at 3 a.m. Once you know what's drawing power, you can decide what to unplug, replace, or schedule to run during off-peak hours.
Three things make these devices genuinely useful rather than just gimmicks:
Hyper-local weather data. The Rachio 3 and Orbit B-hyve don't just check a generic forecast. They use your exact location, local weather station data, and even your yard's microclimate to decide when and how much to water.1 That means no more sprinklers running in a rainstorm.
Phantom load elimination. The average home has dozens of devices drawing power even when "off." Smart plugs and whole-home monitors like the Emporia make those loads visible and controllable.2 You can cut standby power by 10–20% just by knowing what's plugged in.
Real-time monitoring. Seeing your energy and water usage in real time changes behavior. When you watch a spike every time the AC kicks on, you're more likely to bump the thermostat up a degree.
| Pick | Best For | Key Feature | Price Tier |
|---|---|---|---|
| Rachio 3 Smart Sprinkler Controller | Complex, multi-zone yards | Hyper-local weather integration | $$ |
| Emporia Energy Monitor | Whole-home electricity tracking | Per-circuit monitoring | $ |
| Orbit B-hyve Smart Sprinkler Controller | Budget-friendly irrigation | Weather-smart scheduling | $ |
| Netro Sprite | Small gardens & planters | Zone-level moisture sensing | $$ |
Disclosure: As an Amazon Associate, AskBuy earns from qualifying purchases. This doesn't affect our recommendations — we pick what we'd buy ourselves.
If you want the fastest return on investment, start with a smart sprinkler controller — the Rachio 3 if you have a complex yard, the Orbit B-hyve if you want to keep it simple and cheap. Add an Emporia energy monitor next to start chipping away at your electricity baseline. Together, they'll tackle the three biggest utility drains in your home.
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