SolarEdge 3kW Home Hot Water Controller | Smart Immersion Heater Optimiser
SolarEdge 3kW Home Hot Water Controller (SMRT-HOT-WTR-30-S2) — Intelligent PV surplus diversion device for 3 kW immersion heaters | Maximises self-consumption of solar energy | Diverts excess solar power to heat water instead of exporting to grid | No additional inverter needed | Works with any SolarEdge system (single-phase) | App monitoring & control via mySolarEdge | IP65 rated for indoor/outdoor install | Boosts savings & reduces bills
Ideal when your SolarEdge PV system generates more power than your home uses. Automatically diverts surplus to your 3 kW immersion heater instead of sending it to the grid for pennies. No separate energy diverter required — integrates seamlessly with your existing SolarEdge inverter & monitoring.
The SolarEdge Home Hot Water Controller (SMRT-HOT-WTR-30-S2) is a smart, single-phase PV surplus diversion device designed specifically to work with 3 kW immersion heaters. It intelligently monitors your SolarEdge PV production and home consumption in real time, then automatically diverts any excess solar generation directly to your hot water cylinder — turning “wasted” exported energy into free hot water.
Unlike traditional immersion diverters, this unit integrates natively with the SolarEdge ecosystem — no extra CT clamps, no separate hub, no complicated wiring. It uses the existing SolarEdge inverter communication and mySolarEdge app to show diversion performance, energy saved, and hot water contribution. The result is higher self-consumption, lower electricity bills, and faster payback on your solar investment — especially valuable with rising export tariffs and smart export guarantees (SEG).
IP65-rated for indoor or outdoor installation, compact design, and simple wiring (connects between inverter/CT and immersion heater). Fully compliant with UK regulations and compatible with all current SolarEdge single-phase inverters (HD-Wave & SE models). No need for a second inverter or battery — just smarter use of the solar you already generate.
What Makes the SolarEdge 3kW Hot Water Controller Special?
- Native SolarEdge Integration — Works directly with your existing SolarEdge inverter & mySolarEdge app — no third-party hardware or extra monitoring needed.
- Zero Export Diversion — Automatically diverts 100% of surplus solar to the immersion — maximises self-use & eliminates low export payments.
- Smart & App-Controlled — Real-time visibility of diverted energy, hot water contribution & savings via mySolarEdge app (iOS/Android).
- Boosts Self-Consumption — Can increase self-use by 20–40% in typical UK homes with immersion heaters — faster ROI on PV system.
- IP65 Weatherproof — Indoor or outdoor mount — flexible placement near cylinder or inverter.
- No Battery Needed — Uses existing solar surplus — cost-effective alternative or complement to battery storage.
Key Features
Technical Specifications
| Specification | Value |
|---|---|
| MPN / Part Number | SMRT-HOT-WTR-30-S2 |
| Brand | SolarEdge |
| Rated Power | 3 kW (single-phase immersion control) |
| Supply Voltage | 230 V AC ±10%, 50 Hz |
| Max Switching Current | 13 A resistive |
| Control Method | Proportional diversion via SolarEdge inverter data |
| Compatibility | SolarEdge single-phase inverters (HD-Wave & SE series) |
| Monitoring | mySolarEdge app & portal (real-time diversion stats) |
| Protection Rating | IP65 (indoor/outdoor) |
| Operating Temperature | -20 °C to +60 °C |
| Dimensions (H × W × D) | Approx. 200 × 150 × 80 mm |
| Weight | Approx. 1.5 kg |
| Compliance | UK Grid Code, G98/G99, CE, UKCA |
What's in the Box
✅ Requires existing SolarEdge single-phase PV inverter & mySolarEdge monitoring. Connects between inverter/CT and 3 kW immersion heater. Installation by qualified electrician per Part P & SolarEdge guidelines. Ideal for homes with unvented cylinders or Economy 7 immersion backup.
Frequently Asked Questions
Original: $329.32
-65%$329.32
$115.26More Images
SolarEdge 3kW Home Hot Water Controller | Smart Immersion Heater Optimiser
SolarEdge 3kW Home Hot Water Controller (SMRT-HOT-WTR-30-S2) — Intelligent PV surplus diversion device for 3 kW immersion heaters | Maximises self-consumption of solar energy | Diverts excess solar power to heat water instead of exporting to grid | No additional inverter needed | Works with any SolarEdge system (single-phase) | App monitoring & control via mySolarEdge | IP65 rated for indoor/outdoor install | Boosts savings & reduces bills
Ideal when your SolarEdge PV system generates more power than your home uses. Automatically diverts surplus to your 3 kW immersion heater instead of sending it to the grid for pennies. No separate energy diverter required — integrates seamlessly with your existing SolarEdge inverter & monitoring.
The SolarEdge Home Hot Water Controller (SMRT-HOT-WTR-30-S2) is a smart, single-phase PV surplus diversion device designed specifically to work with 3 kW immersion heaters. It intelligently monitors your SolarEdge PV production and home consumption in real time, then automatically diverts any excess solar generation directly to your hot water cylinder — turning “wasted” exported energy into free hot water.
Unlike traditional immersion diverters, this unit integrates natively with the SolarEdge ecosystem — no extra CT clamps, no separate hub, no complicated wiring. It uses the existing SolarEdge inverter communication and mySolarEdge app to show diversion performance, energy saved, and hot water contribution. The result is higher self-consumption, lower electricity bills, and faster payback on your solar investment — especially valuable with rising export tariffs and smart export guarantees (SEG).
IP65-rated for indoor or outdoor installation, compact design, and simple wiring (connects between inverter/CT and immersion heater). Fully compliant with UK regulations and compatible with all current SolarEdge single-phase inverters (HD-Wave & SE models). No need for a second inverter or battery — just smarter use of the solar you already generate.
What Makes the SolarEdge 3kW Hot Water Controller Special?
- Native SolarEdge Integration — Works directly with your existing SolarEdge inverter & mySolarEdge app — no third-party hardware or extra monitoring needed.
- Zero Export Diversion — Automatically diverts 100% of surplus solar to the immersion — maximises self-use & eliminates low export payments.
- Smart & App-Controlled — Real-time visibility of diverted energy, hot water contribution & savings via mySolarEdge app (iOS/Android).
- Boosts Self-Consumption — Can increase self-use by 20–40% in typical UK homes with immersion heaters — faster ROI on PV system.
- IP65 Weatherproof — Indoor or outdoor mount — flexible placement near cylinder or inverter.
- No Battery Needed — Uses existing solar surplus — cost-effective alternative or complement to battery storage.
Key Features
Technical Specifications
| Specification | Value |
|---|---|
| MPN / Part Number | SMRT-HOT-WTR-30-S2 |
| Brand | SolarEdge |
| Rated Power | 3 kW (single-phase immersion control) |
| Supply Voltage | 230 V AC ±10%, 50 Hz |
| Max Switching Current | 13 A resistive |
| Control Method | Proportional diversion via SolarEdge inverter data |
| Compatibility | SolarEdge single-phase inverters (HD-Wave & SE series) |
| Monitoring | mySolarEdge app & portal (real-time diversion stats) |
| Protection Rating | IP65 (indoor/outdoor) |
| Operating Temperature | -20 °C to +60 °C |
| Dimensions (H × W × D) | Approx. 200 × 150 × 80 mm |
| Weight | Approx. 1.5 kg |
| Compliance | UK Grid Code, G98/G99, CE, UKCA |
What's in the Box
✅ Requires existing SolarEdge single-phase PV inverter & mySolarEdge monitoring. Connects between inverter/CT and 3 kW immersion heater. Installation by qualified electrician per Part P & SolarEdge guidelines. Ideal for homes with unvented cylinders or Economy 7 immersion backup.
Frequently Asked Questions
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
SolarEdge 3kW Home Hot Water Controller (SMRT-HOT-WTR-30-S2) — Intelligent PV surplus diversion device for 3 kW immersion heaters | Maximises self-consumption of solar energy | Diverts excess solar power to heat water instead of exporting to grid | No additional inverter needed | Works with any SolarEdge system (single-phase) | App monitoring & control via mySolarEdge | IP65 rated for indoor/outdoor install | Boosts savings & reduces bills
Ideal when your SolarEdge PV system generates more power than your home uses. Automatically diverts surplus to your 3 kW immersion heater instead of sending it to the grid for pennies. No separate energy diverter required — integrates seamlessly with your existing SolarEdge inverter & monitoring.
The SolarEdge Home Hot Water Controller (SMRT-HOT-WTR-30-S2) is a smart, single-phase PV surplus diversion device designed specifically to work with 3 kW immersion heaters. It intelligently monitors your SolarEdge PV production and home consumption in real time, then automatically diverts any excess solar generation directly to your hot water cylinder — turning “wasted” exported energy into free hot water.
Unlike traditional immersion diverters, this unit integrates natively with the SolarEdge ecosystem — no extra CT clamps, no separate hub, no complicated wiring. It uses the existing SolarEdge inverter communication and mySolarEdge app to show diversion performance, energy saved, and hot water contribution. The result is higher self-consumption, lower electricity bills, and faster payback on your solar investment — especially valuable with rising export tariffs and smart export guarantees (SEG).
IP65-rated for indoor or outdoor installation, compact design, and simple wiring (connects between inverter/CT and immersion heater). Fully compliant with UK regulations and compatible with all current SolarEdge single-phase inverters (HD-Wave & SE models). No need for a second inverter or battery — just smarter use of the solar you already generate.
What Makes the SolarEdge 3kW Hot Water Controller Special?
- Native SolarEdge Integration — Works directly with your existing SolarEdge inverter & mySolarEdge app — no third-party hardware or extra monitoring needed.
- Zero Export Diversion — Automatically diverts 100% of surplus solar to the immersion — maximises self-use & eliminates low export payments.
- Smart & App-Controlled — Real-time visibility of diverted energy, hot water contribution & savings via mySolarEdge app (iOS/Android).
- Boosts Self-Consumption — Can increase self-use by 20–40% in typical UK homes with immersion heaters — faster ROI on PV system.
- IP65 Weatherproof — Indoor or outdoor mount — flexible placement near cylinder or inverter.
- No Battery Needed — Uses existing solar surplus — cost-effective alternative or complement to battery storage.
Key Features
Technical Specifications
| Specification | Value |
|---|---|
| MPN / Part Number | SMRT-HOT-WTR-30-S2 |
| Brand | SolarEdge |
| Rated Power | 3 kW (single-phase immersion control) |
| Supply Voltage | 230 V AC ±10%, 50 Hz |
| Max Switching Current | 13 A resistive |
| Control Method | Proportional diversion via SolarEdge inverter data |
| Compatibility | SolarEdge single-phase inverters (HD-Wave & SE series) |
| Monitoring | mySolarEdge app & portal (real-time diversion stats) |
| Protection Rating | IP65 (indoor/outdoor) |
| Operating Temperature | -20 °C to +60 °C |
| Dimensions (H × W × D) | Approx. 200 × 150 × 80 mm |
| Weight | Approx. 1.5 kg |
| Compliance | UK Grid Code, G98/G99, CE, UKCA |
What's in the Box
✅ Requires existing SolarEdge single-phase PV inverter & mySolarEdge monitoring. Connects between inverter/CT and 3 kW immersion heater. Installation by qualified electrician per Part P & SolarEdge guidelines. Ideal for homes with unvented cylinders or Economy 7 immersion backup.
