The Heatmiser Slimline V4 is a versatile and user-friendly thermostat designed for reliable, wired heating control. With its sleek, slim profile and flush mounting, it seamlessly blends into any modern home while providing precise temperature management.
This thermostat can operate either as a standard thermostat or as a timer, with multiple programmable modes to suit your lifestyle:
- Programmable Modes – Choose from Non-Programmable, Weekday/Weekend, All Days Different, or All Days the Same to fit your heating schedule.
- Large Display – Easy-to-read screen with automatic white backlight that turns off after 30 seconds to save energy.
- Thermostat or Timer Mode – Selectable in software for flexible control.
- Self-Learning Optimum Start – Learns your home’s heating characteristics to ensure comfort at the right time.
- 4 Comfort Levels Per Day – Customise up to four temperature settings daily to match your routine.
- Remote Air Sensor Compatible – Supports connection to an optional sensor for more accurate temperature control.
- Temperature Hold & Holiday Modes – Temporarily override settings or program heating while you’re away.
- Additional Features – Includes key locking, frost protection, and selectable °C/°F display.
- Compact Dimensions – Measures 99x86x15mm (LxHxD) for discreet flush mounting.
Ideal for wired heating systems, the Heatmiser Slimline V4 provides reliable and straightforward heating control with flexible programming options. Its modern, minimalist design complements any room, making it a smart choice to upgrade and simplify your home's heating management.
This Slimline Series thermostat is designed to be flush mounted and requires a back box of 35mm (minimum depth) to be sunk into the wall prior to installation.
- Carefully separate the front half of the thermostat from the back plate by placing a small flat head terminal driver into the slots on the bottom face of the thermostat.
- Place the thermostat front somewhere safe. Terminate the thermostat as shown in the diagrams on pages 39-41 of the main install manual (linked above).
- Screw the thermostat back plate securely into the back box.
- Clip the front of the thermostat back onto the thermostat back plate.
Delivery Options
2-3 working day delivery
Next working day
Next working day before 10:30
Saturday Delivery
Delivery cut off times
Our daily cut-off time for dispatch is 4:30pm Monday–Thursday and 4:00pm on Fridays. Orders placed before the cut-off time will be dispatched for next working day delivery (if this option is selected). Orders placed after 4:00pm on Friday will be dispatched on Monday for Tuesday delivery.
Bank holidays may affect these delivery times, so please contact our team if unsure on 01268 744479
Other Delivery Options
PRE-10:30AM and Saturday Delivery services are available, but orders must be placed before the relevant cut-off times.
NOTE: All orders placed on a Friday will be delivered on the following Monday (unless its a bank holiday), unless a Saturday Delivery service is selected and paid for before the 4:00pm Friday cut-off.
Delivery outside the UK
Delivery outside mainland UK may be arranged by prior agreement. You will be advised of the delivery charge before dispatch, at which point you can decide whether you wish to proceed with your order.
Important: Our deliveries rely on third party couriers, so, whilst we make every effort to deliver your order on the specified date and time, unfortunately there may be occasions when this will not be possible due to external influences. Due to this we strongly recommend you ensure you have received your order before any tradespeople/builders are scheduled to commence work.
Still Unsure? Talk to an expert
If you need any guidance or further information our highly experienced team are on hand to help.
Get in touch using our contact form or give us a call on 0800 023 4203 or 01268 744 479.
