Heatmiser Slimline-W, Programmable Thermostat

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RRP: £67.99

Our Price: £44.99 inc VAT

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Product Details

Product Details

Take your heating control to the next level with the Heatmiser Slimline-W Programmable Thermostat. This 230V thermostat combines the functionality of a room stat and a programmer, providing convenient and efficient temperature control for your home.

Key Features:

  • Programmable Functionality: Set up to 4 different temperatures at different times of the day for optimal comfort and energy savings.
  • Self Learning Preheat: The thermostat calculates the heat-up time needed to reach your desired temperature, optimizing energy usage.
  • Temperature Hold Facility: Set a specific temperature for a desired duration, maintaining energy efficiency and comfort.
  • Key Locking: Prevent unauthorized changes with key locking functionality, ensuring the security of your programmed settings.
  • Flexible Programming Options: Choose from non-programmable, 5/2 day, and 7-day programming modes to suit your lifestyle.
  • Blue Backlight: The blue backlight provides clear visibility and conserves energy when not in use.
  • Holiday Feature: Set a different temperature while you're away to save energy and ensure comfort upon your return.
  • ðC / ðF Selectable: Switch between Celsius and Fahrenheit temperature units.
  • Frost Protection: Prevent freezing and protect your heating system with adjustable frost protection.

Upgrade your heating control with the Heatmiser Slimline-W Programmable Thermostat and enjoy personalized comfort and energy efficiency tailored to your lifestyle.

Max OutputVolt Free 3A Max
Dimensions (L,H,D)99x86x15mm
Temperature Range5-35ðC
No. Heating Levels4
Optional Probe (not included)Floor or Thimble Sensor
Probe Rating10Kohm
IP RatingIP20
  1. Separate the front half of the thermostat from the back plate using a small flat head terminal driver.
  2. Terminate the thermostat according to the wiring diagram and securely screw the back plate into the back box.
  3. Clip the front of the thermostat back onto the back plate.

Important: Install the thermostat away from direct heat sources to maintain functionality. Avoid pushing hard on the LCD screen to prevent damage.

This Slimline Series thermostat is designed for flush mounting and requires a back box with a minimum depth of 35mm.



Slimline V3 User Manual

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  • Large Display
  • 5/2 Day or 7 Day Programming
  • Self Learning Optimum Start
  • 4 Comfort Levels per Day
  • Temperature Hold Facility
  • Holiday Facility
  • Automatic Blue Back-Lit Display (Turns off after 30 seconds)
  • Flush Mounting
  • °C/°F Selectable
  • Key Locking
  • Frost Protection
  • Remote Control Option


Our delivery charges are calculated based on the weight of your entire order. Below is a table illustrating the cost for each weight bracket.

Weight From (kg) Weight To (kg) Cost
0 19.99 £0
20 39.99 £5
40 59.99 £10
60 79.99 £15
80 99.99 £20
100+   £25

Please note all orders under £20.00 will incur a £5.00 delivery charge.

In addition to our standard delivery service, we can also arrange for delivery on a Saturday or before 10.30am on any working day. This level of carriage comes at an additional cost:

  • Next working day before 10.30am - Additional £9.99
  • Saturday - Additional £24.99

When will I receive my order?

All efforts are made to ensure your qualifying order reaches you on the next available working day before 7.00pm, as long as you place your order with us by 4pm (Monday to Friday).

All orders received after 4pm on a Friday (including weekend orders) will be despatched on Monday for a Tuesday delivery. Bank holidays are treated in the same way as a non-working day.

Please note that we cannot guarantee delivery at a certain time and occasionally, circumstances beyond our control or that of the courier’s may mean your delivery is delayed. Though a rare occurrence, sometimes a delivery arrives late, meaning that tradesman are unable to continue with a project.

We cannot be held responsible for any costs incurred as a result of a delayed delivery, and we would always recommend that customers ensure the materials required by their contractors are on site prior to the commencement of any work. We take pride in the prompt despatch of our products, but we do rely on third-party couriers to deliver on our behalf. There are occasions when traffic, weather or unusual events can cause delays.

If your product has been delayed, we will do our best to keep you informed using our tracking service, and advise you of any estimated time and date of your delivery.