Our History

2008

In 2008, Tensor's scientists and engineers invent HeatingSave, the world's first off the shelf Building Energy Management System (BEMS). Until then, only a number of companies manufactured Building Management Systems (BMS), which were custom built to suit a particular building. Tensor was the first to take this one stage further, with an integrated IT system enabling better energy management and insight into real time data.

2009

HeatingSave is accredited as an energy-saving producer by the UK Government, putting it on the Energy Savings Technology list. HeatingSave is also accredited by the Carbon Trust and the Energy Savings Trust and is selected by the Building Research Establishment (BRE) for the Greenhouse Project. This project demonstrated how it was possible to make considerable energy and CO2 savings (27%) in the refurbishment of a pair of 1960's houses.

2010

HeatingSave is CERT approved by the Government's Ofgem.

2012

The HeatSave wireless [Zig 2.4 Mhz wireless mesh network] Thermostatic Radiator Valve (TRV) is launched alongside the T3521 Linux based HeatingSave unit.

2013

Additional HeatingSave wireless [Zig 2.4 Mhz wireless mesh network] sensors were launched for measuring temperature, humidity, carbon dioxide levels, as well as low-cost Zig 2.4 Mhz wireless mesh network based automatic meter reading sensors for gas, electricity and water.

HeatingSave develops a Zig 2.4 Mhz wireless mesh network-based Building Performance Monitoring System for the BRE using the extensive monitoring capabilities found within the HeatingSave system.

2014

HeatingSave introduces the Hall Energy & Security Management System (HESM), a complete turn-key system that replaces an existing heating time clock to provide Village Halls with an inexpensive all-in-one Energy Management, Room Booking and Security Access Control System.

HeatingSave also launches the standalone HeatingSave Monitor, a wireless management system that collects internal and external temperature data, information on heating system usage and energy consumption.

2015

HeatingSave introduces the World's First Building Energy Management and Monitoring System (BEMAM), delivering both extensive building performance monitoring capabilities and full control over a building's heating system, lights and HVAC equipment.

2016

The HeatingSave Monitoring system is selected for the Knauf Insulation Energy Performance Challenge, the largest energy and environmental monitoring research project conducted in the UK. It comprised of 70+ houses and 2,728 HeatingSave sensors in total, with 3 billion transactions collected.

HeatingSave engineers develop an improved method of automatically controlling CT/VT valves to maximize energy savings. This year also saw the development of more Zig 2.4 GHz wireless sensors and new destratification fans, wired TRVs, carbon monoxide sensors and ionization smoke alarms.

2017

HeatingSave launches a new Smartphone App, HSapp, for iOS and Android, enabling users to monitor and control HeatingSave and energy consumption as well as security whilst on the move.

HeatingSave Consumer Access Device (CAD) was added to allow HeatingSave to access data from Smart Meters installed as part of the Government's roll-out program.

A new heating oil ordering/delivery module was created to track/manage oil quotes, prices and deliveries and monitor real-life oil consumption and boiler efficiency.

2018

HeatingSave upgraded to include Smart Card/PIN access control for barriers, gates and rooms using the HeatingSave Room Booking system.

HeatingSave's new Intruder Management System uses occupancy and other sensors to detect intruders and message a cascading list of people with real-time speech/email/text alerts to mobile phones.

2022

HeatingSave partnered with The Don Hanson Charitable Foundation to be a part of their Smart Energy Program, helping worthy causes make their heating more efficient and directly resulting in reduced fuel costs.

HeatingSave is awarded a place on the £3bn NHS Framework as the only Building Management System manufacturer in the UK.

2023

HeatingSave have the capability to design and manufacture bespoke heating panel control systems tailored to specific project requirements. Our in-house engineering team works closely with clients to develop intuitive and efficient control interfaces that seamlessly integrate with existing infrastructure. From initial concept and circuit design to enclosure fabrication and software development, every stage is handled under one roof to ensure quality, reliability, and fast turnaround times. Whether for residential, commercial, or industrial applications, our solutions offer precision control, energy efficiency, and long-term durability.

2024

After over a decade, we have re-designed our HeatingSave Hub (model T3521) to meet the evolving needs of our users. The new hub features a significantly smaller form factor, making it easier to install in compact or discreet locations. It also now includes an internal battery backup, ensuring continued operation during power outages.

2025

March saw HeatingSave make history as the first Building Energy Management System (BEMS) to be added to the Government's list of approved energy saving technology products (the Energy Technology List), placing HeatingSave at the forefront of energy saving innovation.

HeatingSave can now control a wide range of heating and cooling devises, including air conditioning units and HVAC systems using the Modbus protocol. This significantly expands the number of compatible products, making our system ideal for both retrofit projects and new installations.