Horstmann / Products / Heating and hot water controls / Thermostats / HRT4

Heating and hot water controls


HRT4 – Electronic room thermostats


Wireless or wired, this new range of purpose designed room thermostats offer the latest energy saving control technology combined with established Horstmann design and manufacturing expertise. Suitable for use in most types of heating systems.

While compatible with most commonly used zone valves and programmers, they make the perfect partners for use with Horstmann zone valves and programmers.

  • Applications
  • Features and Benefits
    • New installations
    • Replacement of old or inefficient thermostats
    • System upgrades to add a room thermostat
    • Frost protection
    • Multi occupancy buildings
    • Control of most domestic gas or oil-powered central heating systems
    • Control of additional heating zones
    • Combination ('combi') boilers
    • Control of solid-fuel heating systems
    • Wireless or wired (battery operated) versions
      • Models suitable for new installations, replacement of old thermostats or the addition of a room stat to an existing system 
    • Load compensation software
      • Boiler Plus compliant when used with a time control
      • Minimal boiler cycling and reduced flow temperatures
    • Clear back lit digital display
      • Set temperature displayed; actual temperature displayed if dial is pressed 
    • Temperature range 5-30°C
      • Suitable for domestic heating installations 
    • Industry standard wall plate
      • Standard fixing centres 
    • Easy to install and use
      • Fewer call backs
      • Bigger energy savings