Originally posted on Underfloor Heating NZ: Cost, Running Costs & Worth It? Superior Renovations - Auckland’s Trusted Home Renovation Specialists Underfloor Heating NZ: What It Costs, What It Costs to Run, and When It’s Worth It Quick answer: Underfloor heating in NZ costs roughly $80–$150/m² installed for electric and $150–$200/m² for hydronic, and running an electric system in a 9m² bathroom works out around $12–$18 a month at 35c/kWh. It’s worth it when the floor is already coming up — far less so as a standalone retrofit. Most people who ask us about underfloor heating have stood on a cold tiled floor in a Mt Eden bungalow at 6am in July and thought, never again. That’s the right instinct. The wrong move is deciding it’s worth it — or not worth it — before anyone’s told you what it actually costs to run, or whether your floor can even take it without a major dig-up. We’re a renovation company, not a heating supplier. So this is the versi...