Monday 20 August 2018


The trench heating system is an underfloor heat radiation system, unlike the wall, mounted radiator. It is a convenient and space saving model that can be run either on water or electricity. A long, rectangular trench is dug beneath the ground and the system comprising an insulated steel box casing is fixed snugly into that space. The steel box casing contains either water pipes or electrical elements that make up the convector unit that is responsible for convection and distributing of hot air. The trench system also has key parts called the grilles. These parts of the system are seen as they act both as covering for the system and also as channels through which cold and hot air enter and leave the system respectively. The grill also gives a decorative, aesthetic look to the room it occupies.

The heating radiator was first invented between 1855 and 1857 by the Prussian-born Russian, Franz San Galli and has remained a must-have in many homes to combat the cold seasons. Thermal energy is transferred from one medium to another via convection. Radiators are heat exchangers. The trench heating system comprises mainly the convector unit and the grille which allows for airflow. The trench heater draws in cold air through the grilles and gives it out as hot air, heating up rooms or enclosed places.

In order to have maximum heat output, grilles should be cleaned periodically because they tend to accumulate dirt and dust particles, and this could reduce the amount of air that goes in or out of the heater.

The heat output of radiators can be monitored and regulated through Room thermostats, Thermostatic radiator valves and more recently, Smart control. The performance of radiators is determined by the EN 16430 testing procedure. This procedure also tests for noise and pressure.

An advantage of the trench heating system is that it allows for even distribution of air across a room, preventing draughts and cold spots. For rooms with floor to ceiling windows, trench heaters are great because there is no condensation. The grilles of trench heaters come in different designs and finishing and therefore add to the aesthetic look of the room. Trench heating systems because they are fitted beneath the floor, are unobtrusive and do not take up space unlike the wall mounted radiators. Hence, customers can have their trench heaters custom designed.

Possible locations for trench heaters are beneath patio doors and thresholds, beneath bay windows, since they do not cause condensation and they can even be run up a flight of stairs. These can always be decided by the customer. 

Trench Heating Radiators can be fan assisted to increase the Radiators BTU output for the same size frame.

Jaga are renowned for quality of design and construction in their Trench Heaters and back up their trench heating with market leading warranties.

Jaga trench heating radiators can be bought at and


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