Tankless Water Heater Electric 8kW 240V - Compact Point-of-Use Heater

In this review of the CAMPLUX Tankless Water Heater Electric 8kW 240 Volt, the bottom line is straightforward: this unit is best for point-of-use hot water under sinks where quick, compact delivery matters more than whole-house capacity. The reviewer finds the instant heat-up and space-saving wall-mounted design the single biggest reasons to buy, especially for kitchens, bathrooms, or small utility spaces where a full-size tank would not fit. Installation is relatively simple for someone comfortable with electrical and plumbing basics, and the ETL-certified safety features provide reassurance.

Key Features

• On Demand Endless Hot Water: Delivers hot water in under three seconds for single-point tasks so you do not wait for a tank to heat.
• Space-saving Design: Wall-mounted, compact dimensions of 12.2' x 8.58' x 2.68' make it easy to fit in cabinets, under sinks, or other tight spaces.
• Fast Heating & Save Money: The self-modulating element adjusts power use to maintain set temperature and can reduce water heating costs compared to some traditional setups.
• Precise Temperature Control: Allows incremental temperature settings from 86F to 131F so you can dial in the desired output for tasks and appliances.
• Easier Installation: Side water connections with left and right inlet/outlet choices simplify under-counter plumbing and reduce installation time.
• Safety Protection: ETL certification plus overheating protection and auto shutoff when no water flow is detected improve safe operation.

Who It's For

This unit is ideal for homeowners or DIY installers seeking a compact, point-of-use solution for a sink, small kitchenette, or workshop where instantaneous hot water and minimal footprint are priorities. It suits rental properties, tiny homes, and remodels where space and installation time are limited.

It is not intended as a whole-house shower heater or for locations requiring large simultaneous hot water draws; those needing multi-fixture supply should look at higher-capacity or whole-house systems. Also, installation requires a 240V circuit with a 40A double-pole breaker and 8 AWG wiring, so plan for proper electrical capacity.

Pros & Cons

Pros

• Compact wall-mounted form factor saves space and fits under counters or inside cabinets.
• Quick heat-up with self-modulating control delivers consistent temperatures and efficient use of power.
• Side water connections and simple mounting make under-sink installation straightforward and time-saving.
• ETL certification and built-in safety features add confidence in daily use.

Cons

• Limited to point-of-use applications and not recommended for whole-house showering or multiple simultaneous draws.
• Requires a dedicated 240V, 40A circuit and correct wire gauge, which may need an electrician if not already present.

Specifications

Model Type	Electric tankless point-of-use
Power	8kW at 240V
Electrical Requirements	1 x 40A double-pole breaker; 1 x 8AWG wire
Activation Flow	Minimum 0.47 GPM
Connections	Side water connection 1/2' NPT, left and right inlet/outlet
Dimensions	12.2' x 8.58' x 2.68'
Certifications & Warranty	ETL certified; 2-year parts support and 24/7 customer service

Our Verdict

The CAMPLUX 8kW tankless unit is a solid value for anyone who needs a compact, efficient point-of-use hot water source. It shines where space, quick delivery, and straightforward under-sink installation matter, and the ETL safety features and temperature precision make it a reliable choice. Those needing whole-house capacity should choose a larger system, but for its intended use this model offers good performance and cost-saving potential.

Frequently Asked Questions

Can this unit be used for a shower?
This 8kW unit is not recommended for whole-house showering and is sized for point-of-use applications like under-sink hot water.

What electrical circuit is required?
It requires a 240V supply with a 1 x 40A double-pole breaker and 1 x 8AWG copper wire.

What maintenance is needed?
If water has significant sediment, periodic flushing is recommended to protect the heating element and sustain performance.