Underfloor Heating Cost Calculator & Price Guide
Use this guide to estimate underfloor heating cost in Australia, including typical underfloor heating installation cost and underfloor heating cost per m2. Based on the live calculator rates, supply and install pricing generally starts at $95/m² for electric mat or cable systems and goes up to $140/m² for hydronic in-screed loops, with all figures in AUD.
Estimate underfloor heating cost
Supply-and-install midpoints per heated floor area. Hydronic assumes a compatible boiler or heat pump is available or quoted separately.
- Finish:
- $3,350
Estimates are indicative only. For an accurate price, get free quotes from local tradies above.
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Underfloor Heating Price Breakdown
Typical job based on 35 m². Prices are supply-and-install midpoints — actual quotes will vary.
| Type | Cost per m² | Typical 35 m² job |
|---|---|---|
| Electric mat / cable | $95 | $3,325 |
| Electric — full wet-area kit + thermostat | $115 | $4,025 |
| Hydronic in-screed loops | $140 | $4,900 |
What Affects Underfloor Heating Cost?
- System type: The biggest driver of underfloor heating cost is the system you choose. Electric mat or cable is priced at $95/m², electric full wet-area kit plus thermostat is $115/m², and hydronic in-screed loops come in at $140/m².
- Heated floor area: Pricing is area-based, so the total underfloor heating installation cost rises as the heated floor area increases. Smaller jobs can also be affected by the $3500 minimum job charge if the calculated total falls below that amount.
- Slab condition: If the slab is not in good condition and needs repair, add $35/m² before multiplying by the heated area. This lifts the effective rate across any of the listed system types.
- Estimate range: Displayed pricing is shown as a range using ±15% around the midpoint rate. That means the final displayed estimate can vary even when the same area and system type are selected.
Underfloor Heating Cost - Frequently Asked Questions
For the default 35 m² example, electric mat or cable is calculated at $3,325, but the minimum job charge applies, so the estimate starts from $3,500 AUD. Electric full wet-area kit plus thermostat works out to $4,025 AUD, while hydronic in-screed loops come to $4,900 AUD before the displayed ±15% range is applied.
Using the live calculator rates, underfloor heating cost per m2 is $95/m² for electric mat or cable, $115/m² for an electric full wet-area kit plus thermostat, and $140/m² for hydronic in-screed loops. If slab repair is needed, add $35/m² to the selected rate before multiplying by area.
Electric underfloor heating cost depends on the setup. Standard electric mat or cable under tile is $95/m², while a full wet-area kit with thermostat, sensor and standard electrical rough-in allowance is $115/m². For very small bathroom jobs, the $3500 minimum charge may apply if the area-based total is lower.
Hydronic underfloor heating cost is $140/m² for in-screed pipe loops. On a 35 m² heated area, that gives a midpoint estimate of $4,900 AUD, with the displayed estimate range shown at ±15% around that figure.
If the slab needs repair rather than being in good condition, add $35/m² to the base system rate before calculating the total. For example, electric mat or cable increases from $95/m² to $130/m², electric full wet-area kit rises from $115/m² to $150/m², and hydronic in-screed loops increase from $140/m² to $175/m².
The calculator displays a range because estimates are shown at ±15% around the midpoint rate. This helps reflect typical variation in supply and install pricing while keeping the calculation tied to the selected system type, floor area and slab condition. If the calculated total is below $3500 AUD, the minimum job charge is used instead.
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