Tankless Water Heater Electric 24kW 240V TEW24 - On Demand Hot Water

In this review of the CAMPLUX Tankless Water Heater Electric 24kW TEW24 the bottom line is simple: this compact, on-demand unit is best for point-of-use applications where fast hot water and easy installation matter most. The reviewer found it delivers hot water in about three seconds, fits into tight spaces, and is straightforward to mount and wire when you have the required electrical circuit. For anyone replacing a small under-sink heater or adding hot water to a single fixture, the TEW24 provides immediate heat with sensible safety and energy-saving features.

Key Features

• 24kW output: Provides near-instant hot water for a single shower or sink with rapid heating and minimal lag.
• On-demand design: The tankless operation eliminates wait time for reheating and reduces standby energy loss compared with tank heaters.
• Digital display: A clear temperature readout and heating indicator let you monitor output in real time for predictable hot water.
• Self-modulating technology: Adjusts power to the flow to maximize efficiency and reduce energy consumption during lighter use.
• Durable heating elements: Elements are separated from the main waterway to limit scale and corrosion, lowering maintenance needs.
• Safety protections: Built-in overheating and anti-dry heating protections plus ETL-aligned design improve user safety.

Who It's For

The TEW24 is aimed at homeowners and DIY installers who need a compact, point-of-use solution for an under-sink hot water supply, a small washroom, or a remote fixture where running a large tank is impractical. It suits users comfortable with a 3 x 40 AMP breaker and 3 x 8 AWG wiring or those who will hire an electrician to meet those requirements.

It is not the best choice for whole-house central heating or multiple simultaneous high-flow showers; the unit is optimized for single-fixture use and will underperform if oversized load is expected. Buyers seeking full-house capacity should look at higher-capacity or multi-unit systems instead.

Pros & Cons

Pros

• Fast warm-up and steady delivery for single fixtures, giving almost instant hot water.
• Easy to install in under three hours for those who prepare the proper electrical circuit and mounting location.
• Low maintenance design with separated heating elements reduces scale buildup and corrosion risk.
• Clear digital display and built-in safety protections provide convenient monitoring and peace of mind.

Cons

• Requires a substantial electrical supply (3 x 40 AMP breakers and 3 x 8 AWG), which may necessitate an electrical panel upgrade.
• Not recommended as a whole-house solution or for multiple simultaneous showers.

Specifications

Our Verdict

The CAMPLUX TEW24 is a well-built, compact on-demand electric heater that offers excellent point-of-use performance and sensible safety features, making it a good value for single-fixture installations. Buy it if you need immediate hot water for a sink or small washroom and can provide the required electrical circuit; look elsewhere for whole-house needs.

Frequently Asked Questions

Can this unit serve a whole-house shower?
No. The manufacturer does not recommend it for whole-house showering; it is intended for point use such as under a sink.

What breakers and wire gauge are required?
The unit requires a 3 x 40 AMP breaker configuration and 3 x 8 AWG wiring for safe operation.

What is the minimum flow to activate heating?
The minimum activation flow is 0.66 GPM; below that the unit may not engage.