Senztek AlphaStat-Plus Hot Water Controller (Booster Control)
This controller does not control solar circulation — it controls the electric booster element in your system.
The Senztek AlphaStat-Plus hot water controller is designed to control the electric booster element in your hot water system, helping reduce energy usage while ensuring you always have hot water when you need it. - hot water booster controller.
If your system is running out of hot water, heating at the wrong times, or using excessive electricity, the controller may be the cause. The AlphaStat-Plus automatically manages heating cycles for efficient and reliable performance.
Widely used in Australian solar and electric hot water systems as a replacement controller.
🔧 ✔ Common signs your controller needs replacing
- Running out of hot water unexpectedly
- Booster element not switching on or off correctly
- High electricity usage
- Heating at the wrong times
- Inconsistent hot water supply
👉 These are classic booster control issues
🔧 ✔ What this controller does
The AlphaStat-Plus monitors your hot water usage and temperature over time and automatically switches the electric element on and off to optimise efficiency and ensure a consistent supply of hot water. The Senztek AlphaStat-Plus is a smart hot water booster controller designed to optimise electric heating.
👉 It essentially:
- Learns usage patterns
- Reduces unnecessary heating
- Improves energy efficiency
🔧 ✔ Suitable systems
This controller is commonly used in:
- Electric hot water systems
- Solar hot water systems with electric booster elements
- Thermo-siphon systems
- Systems requiring booster element control
👉 It works across many brands using Senztek controllers
🔧 ✔ Why choose the AlphaStat-Plus?
- Reduces electricity usage automatically
- Smart control of hot water heating cycles
- Easy-to-read display and settings
- “Boost” function for extra hot water on demand
- “Away” mode to save power when not in use
🔧 ✔ When this controller is suitable
- You want to reduce electricity costs
- Your booster element is not operating correctly
- Your system heats at the wrong times
- Replacing an existing AlphaStat controller
🔧 ✔ When it may NOT be suitable
- Systems requiring solar circulation control (use SolaStat controllers)
- Systems with pump-related issues (circulation problems)
- Systems without electric booster elements
🔧 ✔ AlphaStat vs SolaStat
The AlphaStat controller manages the electric booster element, while SolaStat controllers manage solar circulation pumps using sensors.
If your issue is related to water circulation between the roof and tank, you likely need a SolaStat controller instead.
❓ FAQs
Is this a solar hot water controller?
Not exactly — this controller manages the electric booster element, not the solar circulation system.
Will this fix my hot water issue?
If your issue is related to heating cycles, electricity usage, or booster operation, this controller is often the solution.
Can this replace my existing Senztek controller?
Yes, if you are replacing an AlphaStat or similar booster controller.
Will this reduce my electricity bill?
Yes, the AlphaStat-Plus is designed to optimise heating cycles and reduce unnecessary energy use.
Can I install this myself?
Installation is straightforward, but a licensed tradesperson is recommended.
If you're unsure which part suits, simply contact us - click here.
Who are Senztek?
Senztek is a local based New Zealand electronics designer and manufacturer that has had a huge impact on the Australian solar hot water market. Their quality range of solar hot water controllers has been purposely built to suit our climate. They supply a large number of leading manufacturers globally - Apricus; AAE; Bosch; Edson; Hills; Neopower; Rotex; SolarArk; Stratco; SolarOz; Solarland; Thermotec; Zen - just to name a few.
Their smart energy controllers include the SolaStat; SolaStat Plus; SolaStat ST; SolaStat WR; AlphaStat; EcoStat; SolaStat-Pool and the new SolaSmart range. Senztek has spent many years developing and perfecting advanced algorithms and associated controllers able to deliver real savings for solar and electric hot water users.
Overview
The AlphaStat-Plus controller can control all types of hot water booster applications, including thermo-siphon solar, wetback or domestic hot water electric elements. With AlphaStat-Plus, you won't have to think about turning your hot water element off to save power and then remembering to turn it back on again before your shower goes cold! Your AlphaStat-Plus smoothly and efficiently takes the hassle out of maximising your power savings. It even monitors the water to make sure it is safe from legionella infection.
What else makes AlphaStat-Plus the best choice for you? You can:
- Set your own heat up values
- Trigger one-off heat-ups at the push of a button
- Use vacation mode to minimise your power use while you're away
The AlphaStat-Plus controller has been designed to be robust and reliable. The Senztek brand is reliable and easily installed into any solar hot water system. Its simple installation means you plug in, play and walk away. Replacement solar hot water spare parts are easy to find here at Solar Hot Water Parts and even easier to repair. The controller settings are pre-set and can be easily changed if required.
