Horstmann Battery Electronic Room Thermostat HRT4-B

Horstmann HRT4-B — Battery Operated Electronic Room Thermostat with Load Compensation

The Horstmann HRT4-B is a battery operated electronic room thermostat designed for flexible installation and improved energy efficiency. Using advanced load compensation technology, it delivers more accurate temperature control than traditional mechanical thermostats, helping to reduce energy consumption while maintaining consistent comfort levels.

Flexible Battery-Powered Control

Powered by two AAA alkaline batteries, the HRT4-B is ideal where mains wiring is impractical or undesirable. This makes it a straightforward solution for replacements, upgrades or new installations, particularly in multi-occupancy buildings or retrofit projects.

Improved Comfort and Energy Savings

With a wide temperature control range of 5–30°C and an accuracy of ±0.5°C, the HRT4-B minimises temperature swings commonly associated with older thermostats. When used alongside a suitable time control, it is Boiler Plus compliant, supporting installers in meeting current UK efficiency requirements and delivering bigger energy savings.

Simple Installation and Broad Compatibility

The HRT4-B is compatible with most domestic gas, oil and solid-fuel heating systems that operate via a 230V on/off control signal. Its clear back-lit digital display makes temperature adjustment simple for end users, while its compact design ensures a neat, modern appearance.

Key Features of the Horstmann HRT4-B Electronic Room Thermostat Include:

• Battery Operated Electronic Room Thermostat For Flexible Installation
• Advanced Load Compensation For Improved Comfort And Efficiency
• Wide Adjustable Temperature Range From 5°C To 30°C
• High Temperature Accuracy Of ±0.5°C
• Boiler Plus Compliant When Used With A Suitable Time Control
• Clear Back-Lit Digital Display For Easy Temperature Adjustment
• Voltage-Free Micro Disconnection Output Suitable For Most Heating Systems
• Ideal For New Installations And Replacement Of Older Thermostats
• Compact Modern Design For Domestic And Multi-Occupancy Applications
• 7 Year No-Quibbles Manufacturer Warranty

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