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After being informed of the many benefits of underfloor heating, your next dilemma however is which system to go for; warm
water underfloor heating or electric underfloor heating? This article highlights the advantages of electric underfloor
heating over warm water underfloor heating.
Both electric and warm water underfloor heating are very cheap and simple to install on new concrete floors. Warm water underfloor heating however is more time consuming on suspended wooden floors as:
electric underfloor heating is simply laid under the floor covering so is just as easy to install on top of a wooden suspended floor as installing on top of a concrete floor.
Warm water underfloor heating is often difficult to install in refurbishments as the concrete floors are often already down
so you have to build a false floor to accommodate the piping. Even installing under wooden suspended floors is time consuming (see above).
Electric underfloor heating is incredibly easy as it simply lays under the new floor covering.
In a concrete floor the warm water underfloor heating pipes are buried in 75-90mm of screed. Although the screed is a relatively
good conductor of heat it does take a while for the warm water underfloor heating pipes to heat the screed before the
room can be heated.
In the case of an electric underfloor heating mat, a thin layer of insulation is placed on top of the concrete floor to reflect
the heat upwards. As the heat only has to travel through the floor covering the warm up time is very fast.
Wooden suspended floors:
Wood is not a great conductor of heat and as the warm water underfloor heating pipes have to be installed under the wooden
floors it limits the choice of floor covering. It is fine if the floor covering is tiles or the wooden floor boards are
to be the final covering. It is not however suitable for thick carpets or floating laminate / engineered wooden floors.
As electric underfloor heating is installed onto the wooden floor boards you have much more freedom when choosing your final
The lead time is generally much shorter for electric underfloor heating as the mats are standard off the shelf items.
The material cost of electric and warm water underfloor heating are often very similar. The installation time and therefore
cost of installing is where they vary.
The most cost effective place to install warm water underfloor heating is within a new concrete floor. All other scenarios
tend to be more expensive than electric underfloor heating. With electric underfloor heating all installation scenarios
are very fast and easy. The easiest and fastest floor coverings to install under are floating wooden floors or carpets.
Tiles are a little more time consuming and the lengthiest are Amtico or Karndean floors as the mats have to be covered
by a self levelling compound.
Warm water underfloor heating systems require a manifold on each floor, for large properties there may even be multiple manifolds on each floor. This obviously takes up valuable space which you could put to better use. There are no manifolds required for electric underfloor heating systems.
When retrofitting warm water underfloor heating on top of an existing concrete floor, you have to build a false wooden floor to accommodate the piping. By raising the floor height you have a whole range of problems such as door height, sideboards, kitchen units, electric sockets etc. As electric underfloor heating is so thin it doesn’t effect the floor height avoiding a