Central Heating Installation — Blenheim & Marlborough

Central heating costs in New Zealand vary significantly depending on the system type, home size, and complexity. For a new build, hydronic underfloor heating typically costs $80–$120 per square metre installed. Radiator systems for an existing home generally range from $5,000 for a small property to $20,000 or more for larger homes.

Both are hydronic systems that use warm water. Underfloor heating uses pipes in your floor for even radiant heat. Radiators are wall-mounted panels that heat rooms more quickly. Underfloor is best for new builds; radiators are often more practical for retrofits.

For a new build, underfloor pipe installation typically takes one to three days before the slab is poured. A radiator system retrofit in an average family home usually takes three to five days.

In most cases, yes. Radiator systems are the most straightforward retrofit option. Underfloor heating retrofits are possible using screed overlay systems or subfloor installations.

We're a Stiebel Eltron Accredited Installer and work with leading European and Australasian radiator brands. For underfloor pipe, we use quality cross-linked polyethylene (PEX) with long warranties.