ThermoPlus AS1 is a programmable thermostat made especially easy to use.  It is particularly recommended for the elderly, infirm or visually impaired due to its extensive set of specially designed features.

ThermoPlus AS1 provides a 7-day time profile, with up to 6 different temperatures and 3 ‘on’ periods for each day, allowing each day of the week to be programmed individually.

ThermoPlus AS1 works with most domestic gas, solid fuel and oil-fired central heating and hot water systems.



  • Accessibility

    ThermoPlus AS1 has an extremely simple, clear and large dial-based interface, enabling users with visual and other impairments to operate and make changes to their heating schedule. The main controls are embossed with Braille, and audible feedback is provided.

    Replacement of single-channel central heating programmer and thermostat

    Thermoplus AS1 will replace both an existing single-channel programmer and a thermostat with a single, compact unit. It will provide three ‘on’ periods per day, chosen from five predetermined daily periods/temperatures and one programmable period, with the opportunity to have each day different if so desired.

    Single device for central heating control in new builds


    Thermoplus AS1 is ideal for use in new builds of up to 150 m2 floor area, where a combi boiler is installed with a single zone. One device can control the temperature and boiler scheduling, via a single connection.

    Improve boiler economy by replacing a single-channel programmer


    Thermoplus AS1 can replace an existing single-channel programmer without a thermostat, to provide scheduled temperature control, together with improved economy through the use of TPI technology.

    Replace a thermostat-only system


    Thermoplus AS1 can replace an existing thermostat-only system and provide up to six timed temperature values per day, combining the flexibility of a programmer with the efficiency of a TPI thermostat.

    Each day can be programmed separately, or weekdays and weekends can be grouped together. This product cleverly combines the value of a programmer and an efficient thermostat, with flexibility and ease of use.

  • Key Feature

    • Single-channel programmable thermostat
    • Replaces existing thermostat and/or programmer with a single device
    • For new builds with combi boilers, single zone2floor area (2 units can be used for larger areas)
    • Special features for the elderly, infirm or visually impaired
      • Choice of display options for monitoring time and temperature settings
      • Override by ‘Plus’ and ‘Minus’ buttons for immediate and direct control of temperature
      • Audible and tactile feedback, with LED warm/cool display
      • Pre-set clock, with battery backup to ease installation
      • Automatic clock adjustment for BST/GMT
    • 7 day time/temperature profiles
      • 6 profiles,  5 factory pre-set  and 1 customisable
      • 7-day programme enables different schedules for each day of the week
      • Up to 3 operating periods per day
    • Specification
    • Customer testimonials
    • Electrical

      Power supply

      230 V, 50 Hz

      Contact type


      Wiring configuration

      Volt-free powered c/o contacts (SPDT) no/nc

      Contact rating

      3 (1) A, 230 V, 50 Hz


      Double insulated

      Compliance & Environmental

      Pollution degree


      Ingress protection


      Case material

      Flame-retardant thermoplastic

      Backup battery


      Operating temperature range

      0 °C to +40 °C

      Temperature control range

      +15 °C to +30 °C

      Standby temperature

      +5 °C to +10 °C

      Technology features





      Systems compatibility

      Gravity or fully pumped

      Boiler types

      Gas, oil, electric (>3 A via contactor), system or combi

      User interface


      7 days, with separate programme for each day of the week

      Number of ON/OFF cycles per day

      3 periods per day with 6 temperatures

      Temperature setting range

      OFF  at  +5 °C to +30 °C

      Programme settings

      Auto, standby


      Instant warm/cool

      Displayed time adjustments

      1-minute steps

      Switched time adjustments

      15-minute steps

      Frost protect

      Initiated by blue standby button 



      24 hour, battery backed, with date and time pre-programmed, and automatic BST/GMT adjustment


      Dimensions (W x H x D)

      120 mm x 90 mm x 32 mm


      Directly on to a wall, or into a single-gang steel flush wiring box to BS4662

    • Testimonial-01 dated 29th Feb 2016✰✰✰✰✰

      So easygoing!

      Jackie on Feb 29, 2016

      What a brilliant company this is! The website is full of great ideas and there is real help and product advice just a phone call away! I was looking for a heating control for my partially sighted Mum and found the exact thing I needed. Knowing very little about these things I called for confirmation and placed my order with confidence.

      The controller arrived the next day. The electrician fitted it quickly and easily, it simply replaced the old dial thermostat. You can choose which program which would best suit the home owner or make up your own. I set an average all day temperature of 19 degrees which mum found comfortable and she has the option of using the huge + or - buttons to go up or down by 2 degrees, the very accurate thermostat ensures that her home remains at a constant warm temperature, stress free!

      Thank you Andy and your team, I no longer have to worry about my mum trying to manage her heating when I am away, I think it will save her money on fuel too! I would recommend buying this product from this company to anyone who is looking for simple solutions around the home.