Optimal Plus+ OPTI27+ Indoor Electric Tankless Water Heater 17 L/min
The Optimal Plus+ electric tankless water heater delivers endless, on-demand hot water with smart Wi-Fi connectivity for convenient whole-home or point-of-use operation. Equipped with advanced ultrasonic flow technology and 1-degree precision digital temperature management, this space-saving system optimizes energy efficiency and allows you to adjust settings, track usage, and receive real-time diagnostic alerts directly via the Optimal App.
Engineered for long-lasting reliability, the compact wall-mounted design features integrated dry-fire protection, leak detection, and an automatic overheat shut-off to safeguard internal components. With standard 3/4-inch water connections and no venting requirements, this powerful unit easily integrates into existing residential plumbing to help reduce energy costs and reclaim valuable living space.
Key Features
| Brand | Optimal |
| Model Number | OPTI27+ |
| Series | Plus+ |
| Product Type | Tankless Water Heater |
| Power Source | Electric |
| Voltage | 240 V |
| Max Flow Rate | 17 L/min |
| Installation Type | Wall mount |
| Use Location | Indoor |
| Water Connection Size | 3/4-in |
| Water Connection Location | Bottom |
| Height | 43.7 cm |
| Width | 36.8 cm |
| Depth | 8.9 cm |
| Weight | 6.4 kg |
| Minimum Operating Temperature | 26.7 °C |
| Maximum Operating Temperature | 60 °C |
| Uniform Energy Factor | 0.99 |
| Display Type | Digital |
| Smart Compatibility | Wi-Fi, iOS, Android |
| Safety Features | Overheat Shut-Off, Dry-Fire Protection, Leak Detection |
| Safety Listing | ETL safety listing |
| Warranty | 25-year limited |
Highlights
- Integrated Wi-Fi enables remote temperature control, usage monitoring, and diagnostic alerts via the Optimal App.
- Patented design incorporates advanced ultrasonic flow technology for reliable, high-efficiency operation.
- Space-saving compact wall-mount configuration eliminates bulky storage tanks and requires no venting.
- Built-in protection mechanisms include dry-fire prevention, leak detection, and overheat shut-off.
Compatibility
Compatible with standard 3/4-inch residential plumbing fittings, 240V electrical connections, and mobile devices running iOS or Android via the Optimal App.
Downloads
Frequently asked questions
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Details
This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.
Shipping & Returns
Orders typically ship within 5–7 business days. Returns are accepted within 30 days of delivery — see our Shipping Policy and Refund & Return Policy pages for full details.