Inline Heater

In-line heating elements

In systems that circulate water, in-line heating elements are useful.

See this review on this Jacuzzi type in-line heater or spa heater:

The heater connects inline to the pool pump and turns on when there’s enough water flow to trigger it.




Type of product:

Heater assembly

Make and Model:

Chinese LX Flow type Heater. H30-RS1


Volts: 240vac


Hz: 50/60


KW: 3.0


Amps: 13.4


Sensor compatibility: Sensor built in, the heater is controlled by a thermoregulator on the side of the module.


Material spec: Plastic


Required flow rate: Set by pressure switch, this switch will need to be pressurised, if it runs straight to a big bore out let with no bends, there will be no back pressure and it may not work

Compatible with:

Most Chinese spas with a small plumbing change or can be used as a remote heater on a bespoke project

Connections / Fixings:

1.5″ white plastic female sockets to connect to plumbing


Heater length:


Heater Diameter: 50mm


Overall height: 120mm


Overall length complete: 340mm

Additional notes:

High limit thermal cut out built in. This unit is rated IPX5 and has CE approval.