Starting Smart Irrigation: What Budget to Cut Your Water Bill in Half?

Water is becoming blue gold. Watering your garden "by guess" often means wasting 50% of the resource (evaporation, unnecessary watering after rain, forgetting the open tap...).

Smart irrigation is not a gadget for geeks. It is a tool that pays for itself in one or two dry seasons. But how much does it really cost to get equipped?

Option 1: The Apple HomeKit "Starter Kit" (Budget: ~120€)

If you have an iPhone, this is the royal solution. The Eve Aqua (Gen 3) screws directly onto any standard outdoor faucet.

• Advantage: Thread compatible. If you have a HomePod or Apple TV, the range is excellent and responsiveness instant.
• Function: You create schedules in the Home app. The module cuts the water automatically. You monitor your consumption in liters.
• Savings: No more forgetting. And above all, you can use Siri Shortcuts to say "If it rained yesterday, don't start watering today".

Option 2: The Robust Gardena Ecosystem (Budget: ~160€ + Gateway)

If you want "heavy duty" and you already have other Gardena tools (like a Sileno robot).

The Smart Water Control is indestructible. It requires the Gardena Gateway (bridge), which adds to the initial bill, but allows connecting soil moisture sensors later. This is the real secret of saving water: water only when the soil is dry, not just "because it's 8 AM".

Option 3: The Genius Shelly Hack (Budget: ~25€)

This is the option for DIYers. You don't buy a faucet timer, but you automate an existing solenoid valve.

The Shelly Plus 1 can control a 24V or 220V valve.

• Cost: ~20€ for the module + ~20€ for the standard valve + some pipes.
• Power: The Shelly software allows complex scenarios based on local weather, sunset, etc.
• Downside: You have to touch electricity and plumbing.

The Budget Verdict

To start without work: Eve Aqua is unbeatable. It's clean, beautiful, and installs in 2 minutes. For a buried and pro installation: Buy Hunter or Rainbird valves and control them with Shelly modules or a multi-channel Gardena Smart Irrigation Control system.

The 120€ investment is quickly recovered if you avoid killing your 30€ hedges due to lack of water or receiving an astronomical water bill following an oversight.