Elecro Optima Compact Touch Screen Electric Pool Heaters 3-24kw single & 3 phase


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Elecro Optima Compact Touch Screen Electric Pool Heaters from 3kw to 24kw single & 3 phase models


Elecro Optima Compact Electric Heater

1. Description

The Elecro Optima Compact range is BMS integration ready and comes with corrosion-resistant titanium heating elements, making it highly robust and durable.

The Optima Compact is designed and manufactured to the highest specifications at the Elecro works in Hertfordshire, England. Compact in design, robust and ultra-reliable, this heater is made to last, providing you the perfect pool temperature with easy to use controls.

Robust, reliable, accurate and efficient, the Elecro Titan Optima is the ideal choice for a long-lasting swimming pool heater, which is easy to install even in limited spaces.

The heater can be vertically wall-mounted using the bracket provided or stand on the floor on its two feet and offers an easy-to-program touch screen with clear blue digital characters that are legible even in bright sunlight. Whether used as a stand-alone device or back up for a heat pump the Titan Optima will provide many years of reliable maintenance free service and like all Elecro electric heaters will operate at 100% efficiency throughout its life.

All Elecro electric heaters feature our unique and proven coiled heating element technology whereby a turbulent vortex is created in the water flow. This delivers outstanding efficiency and extended life expectancy by preventing the build up of mineral deposits on the heating element.

Three of these signature heating element and flow tube assemblies are situated in parallel inside the Titan Optima casing and achieve outputs ranging from 18 to 120-KW. Each element bank is energised via two separate contactors with integral digital timers that minimise the potential of any voltage drops and at the same time allowing for simple, no fuss installation.

The Optima Compact range can be easily operated using the digital thermostat, accurate to 0.5°C and is ready for integration to your Building Management System. The heater’s outlet manifold accommodates a flow switch, with gold tipped reed, that provides a signal to the control board for ultimate reliability and safety; whilst the inlet manifold has been designed to eliminate the risk of air locking. Over-heating is prevented by a manual-reset thermal safety cut-out.

The heater’s outlet manifold accommodates a flow switch that provides a digital signal to the control board, while the inlet manifold has been designed to minimise flow imbalance between the flow tubes, eliminating the risk of air locking. Safety and equipment protection is provided by a flow switch, with over-heating prevented by one auto-reset and one manual-reset thermal safety cut-out’s.

2. Features

  • Easy to install
  • Safe, robust and reliable
  • Easy touch screen programming
  • Digital water flow signal – no pump interlock required
  • Titanium heating elements
  • Stainless steel 316 flow tubes
  • Digital timers for staged energisation (soft start)
  • 100% operational efficiency throughout products life
  • Unit can be vertically wall mounted (brackets supplied)
  • 3 year warranty

3. Sizing

Power Output Voltage Amps length ‘L’
3kW 230v 13 699mm
4.5kW 230v 20 699mm
6kW 230v 27 699mm
9kW 230v 40 699mm
12kW 230v 52 877mm
6kW 230/415v 27/9 877mm
9kW 230/415v 40/13 1042mm
12kW 230/415v 52/18 1042mm
15kW 415v 22 1042mm
18kW 415v 26 1042mm
24kW 415v 35 1042mm

The guide for sizing electric pool heaters is 1.5kw per 1000 gallons of pool or pond water. Or 1.5kw per 4.5m3 of pool water

so for a 20m3 pool, you would need at least a 6.6kw electric heater.

Note that the maximum size of electric heater that can run from a UK 13A socket is 3kw

Our heat pumps have much lower running costs than electric pool heaters

4. Specification

Please see Specifications tab at the top of the page

5. Availability

This item is in stock for immediate delivery – please allow 3-5 working days

6. Delivery

The price includes FREE UK delivery.

We can ship this item to any country. Please contact us for a shipping quote.

7. Warranty

The Elecro Optima Compact pool heater comes with a 3-year warranty.

We recommend that you retain the packaging in case you need to return the unit to us for repairs under the warranty. 

8. Technical Support

We are happy to provide technical support for all Elecro Evolution products that we supply.

9. Product Literature

Please see the Literature tab at the top of the page for the Brochure and User Manual downloads.

10. Assistance?

If you need any assistance or advice as to which model would be best for your pool, please feel free to call or Contact Us

for more information, also see our FAQs page

All items sold in accordance with our terms and conditions

for all enquiries, please contact us at

Flow requirements Minimum Flow:
3-kW to 6-kW = 1m³/hour
9-kW to24-kW = 4m³/hour
Maximum Flow : 17m³/hour
Recommended: 10m³/hour
Heating Elements Titanium, low watts density
Flow Tubes Optima Compact = BS 316L Stainless Steel
Optima Compact PLUS = Titanium
Control Thermostat Options – BMS Integration Ready with touch screen control panel
– Standard Digital 0.5°C differential (without BMS integration or touch screen)
– Analogue 1.2°C differential
Safety Thermostat 55° C (manual reset)
Flow Switch Gold tipped reed switch with Titanium fulcrum pin
Contactors Duel Schneider Electric
Wiring High temperature, silicone sheathed, multi-strand copper conductors
Seals High temperature special formula EPDM
Water Connections 1½” BSP female thread supplied with:
1½” / 50mm ABS unions for rigid pipe
1½” / 1¼” hose tails for flexible pipe
Working Pressure 4 bar maximum
Mounting Floor or wall mountable (wall bracket supplied)
Standards compliance European Electromagnetic Compatibility directive
Harmonised standards The European Low Voltage Directive and The Harmonised Standard

Please click the links below to download pdf brochures for Elecro heaters

Duratech BrochureElecro Optima Compact Installation Manual


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The prices shown include FREE UK delivery for orders over £50 or £6.50 for orders under £50

We can ship to any country. Please contact us for a shipping quote.

The lead time on most items is normally on a 1-2 day delivery,  subject to availability. Please call to check availability.

Additional information

Weight 40 kg

3kw, 4.5kw, 6kw, 9kw, 12kw, 15kw, 18kw, 24kw


Single or 3 Phase, Single Phase, 3 Phase