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In-Slab Heating | Comfort Heat

Supplier: Comfort Heat Australia

Hydronic slab heating is suitable for large areas (100 m2+) where the slab is used as a heat storage.

Price Guide: POA

Comfort Heat In-Slab Heating

In-slab heating has a slow response time and can take between 1-2 days to heat up, depending on slab thickness and insulation.

Pipe technology:

The PEX pipe is specific for under floor heating. It is a cross linked polyethylene pipe with oxygen barrier to prevent corrosion.

Heat output:

With In slab hydronic heating we aim for a heat output of 100-120 W/m². A combination of flow and temperature is balanced to suit the heat load requirement of a room. This balance varies room to room.


The PEX hydronic floor heating pipe is installed before the slab is poured. The pipe is attached to either the mesh or the reinforcing rods that have 200mm centres (one direction only). With slabs poured directly onto the earth, it is advised to insulate under the slab to avoid heat loss into the ground. All pipe returns to a central manifold. In installations that have multiple levels it is advised to install multiply manifolds (one per level), all connecting back to your nominated heat source.

Special requirements:

The PEX hydronic floor heating pipe can be installed across expansion joints with the correct installation method. Comfort Heat must be informed of any expansion joints in the slab. For large areas multiple zones will be installed. 


Learn more about Comfort Heat In-Slab Heating