Optimal OPTI18+ Electric Tankless Water Heater

Name: Optimal OPTI18+ Electric Tankless Water Heater
Brand: Optimal
Price: 360.25 USD
Availability: InStock

$360.25 $655.00

Taxes included. Shipping calculated at checkout.

Wattage 12000 14500 18000 27000

The Optimal OPTI18+ smart electric tankless water heater delivers on-demand hot water for whole-home use, point-of-use applications, or as a booster system. Featuring patented ultrasonic flow technology and an advanced 18 kW heating system, it provides precise temperature control with 1-degree accuracy while reducing water heating costs by up to 50%.

Integrated Wi-Fi connectivity pairs seamlessly with the Optimal App to allow remote temperature adjustments, usage tracking, and real-time alerts. Designed for compact wall-mounted indoor installation, this unit includes dry-fire protection, automatic leak detection, and standard 3/4-inch water connections without the need for venting.

Key Features

Brand	Optimal
Model Number	OPTI18+
Series Name	Plus+
Type	Tankless
Power Source	Electric
Voltage	240 V
Wattage	18000 W
Maximum Flow Rate	14 L/min
Uniform Energy Factor	0.99
Depth	8.9 cm
Height	42.9 cm
Width	29 cm
Weight	5.4 kg
Water Connection Size	3/4-in
Water Connection Location	Bottom
Installation Type	Wall mount
Use Location	Indoor
Display Type	Digital
Wi-Fi Enabled	Yes
App Compatibility	Optimal App (iOS, Android)
Leak Detection	Yes
Overheat Shut-Off	Yes
Safety Listing	ETL safety listing

Highlights

Leak Detection
Warranty: 25-year limited
Smart Compatible

Compatibility

Compatible with standard 3/4-inch plumbing connections and works with the Optimal App on iOS and Android devices via Wi-Fi.

Downloads

Frequently asked questions

Can this water heater be controlled remotely?

Yes, it features built-in Wi-Fi and connects to the Optimal App on iOS and Android to adjust temperatures, track energy usage, and receive real-time alerts.

Does this unit require venting?

No, this electric tankless water heater requires no venting and installs directly to standard 3/4-inch water connections.

What safety protections are built into the unit?

The water heater is equipped with integrated leak detection, overheat shut-off protection, dry-fire prevention, and built-in diagnostic troubleshooting.

What applications is this water heater suitable for?

It can serve as a whole-home replacement for a traditional tank, operate as a dedicated point-of-use unit, or function as a booster alongside a hybrid system.

Made with care

Great value

Elegant design

Quality materials

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.

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.