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Product at a glance

This product is discontinued

Immersion heater control

Economy 7 Quartz has a one-hour boost timer. A proven, reliable and accurate unit, the Economy 7 Quartz is easy to install and set-up, providing a tankful of hot water to start each day, utilising Economy 7 off-peak rate overnight electricity. Manual boost timer provides extra hot water in the daytime, should it be needed. Economy 7 Quartz is the standard by which all other water heating controls are judged and is the all-time bestseller in water heating controls.


  • For use with cheap rate overnight tariffs such as Economy 7 or similar to provide a tankful of hot water each morning


  • Keeps time during power interruptions
  • Summer and Winter time settings instantly visible
  • Large terminals and back box for easy installation
  • Indicator lights show whether on peak or off-peak power is being used
  • Up to 60 mins boost means extra hot water at any time


  • Quartz controlled accuracy within 10-minutes a year
  • Rechargeable battery
  • Summer and Winter time settings
  • Boost timer
  • ‘Boost on’ indicator light
  • Economy 7 Quartz has a one-hour boost timer
  • Large terminals and back box
  • Off-peak indicator light
  • Industry standard wall box and connections
  • 7 years no quibbles warranty


Contact rating 13 Amps 230V AC suitable for immersion heaters up to 3kw
Contact type Micro-disconnection on control
Disconnection to immersion heaters on double-pole rocker switch
Supply 230V 50Hz
Pollution degree Degree 2
Moisture protection Ordinary
Enclosure protection IP30
Shock protection Class 1
Live parts Enclosed
Impulse rating 4000V
Operating temperature range 0°c to +35°C
Battery reserve 150 hours
Clock am/pm Indication Winter/Summer indication
Programme options Off-peak: adjustable between 4,. 5 and 7 hours
Boost: 0-60 minutes
Dimensions 170 x 115 x 60mm (excluding switches)
BEAB approved Yes