Secure Controls (Horstmann) H3747 Programmable Thermostat, Heating Timer Control, Digital Room Thermostat, Central Heating Programmer Part Number: SCT400-000

Secure Controls (Horstmann) H3747 Programmable Thermostat, Heating Timer Control, Digital Room Thermostat, Central Heating Programmer

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£195.50
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Secure Controls (Horstmann) H3747 Programmable Thermostat, Heating Timer Control, Digital Room Thermostat, Central Heating Programmer Part Number: SCT400-000
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Secure Controls (Horstmann) H3747 Programmable Thermostat, Heating Timer Control, Digital Room Thermostat, Central Heating Programmer

SKU W-418088
Manufacturer part number
SCT400-000
EAN
5015914357527
£195.50
inc VAT£162.92 ex VAT
Lead time: 1-5 working days

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Product: Secure Controls (Horstmann) H3747 Programmable Thermostat, Heating Timer Control, Digital Room Thermostat, Central Heating Programmer (Part no. W-418088)

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Description

Product Overview

The Secure Controls (Horstmann) H3747 Programmable Thermostat is a reliable heating control designed to help you manage your home’s heating schedule and comfort levels more efficiently. Ideal as a replacement programmable thermostat, it helps reduce wasted energy by keeping your heating on only when you need it.

Key Features

  • Programmable heating control – set schedules to match your routine and avoid heating empty rooms.
  • Accurate temperature management – helps maintain consistent comfort and reduce hot/cold swings.
  • Designed for central heating systems – dependable control for everyday residential heating use.
  • Ideal replacement unit – suitable for like-for-like swaps where an H3747 thermostat is specified.

Use Case / Application

Suitable for homes and light commercial environments where timed and controlled heating is required. Common applications include:

  • Living rooms and hallways to manage day-to-day heating comfort
  • Bedrooms to schedule lower temperatures overnight
  • Kitchens and utility areas where heating needs vary by time of day
  • Rental properties where reliable, predictable heating control is essential

Problem → Solution

Ideal for replacing an older or faulty heating programmer/thermostat and regaining dependable, scheduled temperature control to help reduce energy waste.

Product Specifications

  • Manufacturer – Secure Controls (Horstmann)
  • Manufacturer Part Number (MPN) – SCT400-000
  • EAN / Barcode – 5015914357527
  • Product Type – Programmable Thermostat
  • Typical Applications / Use Cases – Central heating time and temperature control in domestic properties

Why Buy from BHL?

Secure Controls (Horstmann) heating controls are known for dependable performance and straightforward replacement options. Buy the Secure Controls (Horstmann) H3747 Programmable Thermostat (Part Number: SCT400-000) online from BHL for competitive pricing, genuine parts where relevant, and free* & fast UK delivery. BHL are a specialist online merchant trusted by thousands of satisfied customers online since 1998, with thousands of 5 star reviews. Your order is delivered with care from our UK warehouses. *see our terms

Reviews

Buying guide: Wired Thermostats

A room thermostat measures the air temperature and switches the heating on or off to hold the setting you choose. Wired thermostats are connected to the boiler or wiring centre by cable rather than by radio. This category covers simple dial and digital room thermostats, programmable room thermostats that add timing, and wired smart thermostats; some kits in the range also use a radio-linked receiver.

Key choices

  • Programming: a plain thermostat holds one temperature; programmable models set times and temperatures on a 24 hour, 5/2 day (weekdays and weekend) or 7 day pattern.
  • Power: some run from the mains supply, others from batteries while still switching a mains-voltage circuit.
  • Switching: volt-free contacts switch a separate circuit and can be wired into systems of different voltages, so match the thermostat to the wiring you have.
  • OpenTherm: a two-wire digital link that lets a compatible thermostat ask the boiler to turn its output up or down rather than simply on and off. Both the boiler and the thermostat must support it.

Fitting and regulations

Fit the thermostat about 1.5m above the floor, away from radiators, lights, televisions, direct sunlight, draughts and outside walls. Wiring should be done by a competent person to the current wiring regulations, with the supply isolated first. In England, when a boiler is replaced, Approved Document L expects time and temperature control and boiler interlock, so the boiler and pump switch off when nothing needs heat. For a gas combination boiler in an existing home, one extra measure is also required, such as a smart thermostat with automation and optimisation, load compensation or weather compensation.

For radio-linked models, see wireless thermostats, or browse heating controls.

Shop all Wired Thermostats

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