The three most popular methods of heating a conservatory are:
It is important to consider carefully the merits of each system before deciding which will be the best option for your conservatory.
Extending the central heating system out into a conservatory is usually less expensive to install than underfloor heating. However, conservatories have limited wall space so it may be difficult to site large enough radiators to provide the heat output needed.
Plus points of heating a conservatory with radiators:
Minus points of heating a conservatory with radiators:
Radiators despite their name, operate primarily as convectors. In a conservatory the warm air will rise up and collect in the top of the conservatory roof area rather than circulate, accentuating the hot head, cold feet effect of convecting systems.
If you are planning to finish the conservatory floor with stone or ceramic tiles, remember these will stay cold if the room is heated by radiators.
There are three types of underfloor heating:
This is perhaps the ultimate solution for heating a conservatory, but has a higher installation cost than electric underfloor heating.
Plus points of wet underfloor heating:
Minus points of wet underfloor heating:
This type of heating utilises a continuous cable which is laid on top of the floor insulation prior to screeding. This allows the heating cable to heat the whole screed which acts as a massive thermal store. Once operating temperature is reached, only a small amount of heat is required to maintain energy.
The in-screed cable should be laid at the correct spacings to achieve a heating output of around 200 W/m². This is sufficient to act as a primary heat source and more than adequate to heat a modern conservatory.
This type of electric underfloor heating is a 2-3mm cable that comes glued, snake fashion to an open webbed mat. It is fitted after the floor is screeded. Some manufacturers suggest laying a thin 10mm insulation board first, then the heat mat, and finally the floor tiles.
Whilst the system has a quick response time, there is virtually no thermal store so it is not as efficient as an in-screed system and will cost more to run. A heat mat may struggle to act as a primary heat source, so while you may have a warm floor, the room might not reach the ideal room temperature on cold days.
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