Warmup has been warming New Zealand homes since 1994. An ultra-thin undertile heating cable sits directly beneath your tiles, delivering rapid, consistent warmth across bathrooms, kitchens and living spaces, backed by a lifetime warranty on undertile heating products.
Distribution
Warranty
Before and after install
Undertile heating is the best type of heating for tile and stone as they have high thermal conductivity, meaning that the heat from an underfloor heating wire transfers to the floor surface quickly, warming the floor surface where you require it. Undertile heating is easily installed in both new and existing homes, whether it be a single bathroom or a total floor area.
Warmup’s undertile heating element is double-insulated with a full earth braid, 2.2–2.4mm thick, and 100% water-resistant, using between 200–3000 watts depending on the size of the room. Paired with Marmox insulation boards, the system acts as an effective waterproofing layer and reduces footfall noise and echo in larger tiled areas, in addition to improving heat-up time and running efficiency. Installation is usually done just before tiling, causing minimum disruption to your building or renovating schedule. Every element is tested twice: once at the factory and again on-site during commissioning. Final electrical and thermostat connections require a registered electrician.
Combining correct control with the correct installation gives you a cost-effective heating system, with no more cold spots or chilly drafts. Maximum effectiveness can be achieved when used with insulation boards; they not only act as an excellent waterproofing agent, but reduce footfall noise and echoes in your larger tiled areas.
Warmup has supplied undertile heating in New Zealand since 1994 — longer than most competing brands sold here — and was the first company in New Zealand to offer a Lifetime Warranty on undertile heating products. The brand is supported by a New Zealand technical team and regional distributors including Warmup Auckland, Warmup Wellington and Warmup Canterbury, familiar with local construction practices, electrical regulations, and tiling requirements. Designed for New Zealand’s 230V supply and AS/NZS wiring standards, Warmup’s Undertile Heating has been appraised for use in internal dry and wet areas of buildings [BRANZ Appraisal No 644 [2022]].
Lifetime warranty — the first offered in the New Zealand undertile heating market
BRANZ Appraised Undertile Heating (Appraisal No. 644, 2022)
Trusted in New Zealand homes since 1994
Compatible with all tile types, adhesives, and substrates
Works with every Warmup thermostat, including smart WiFi models
Upgrading your bathroom with Warmup Undertile Heating is one of the most effective ways to lift your everyday comfort, backed by a Lifetime Warranty and a BRANZ Appraisal.
Warmup Easy-To-Install Kits: Warmup offers undertile heating in easy-to-install DIY kits with full, comprehensive installation instructions included to ensure a flawless stress-free installation. Each Warmup floor heating kit includes:
• Premium double-insulated heating wire (featuring a full earth screen and Teflon core insulation)
• High-tack adhesive spray for secure positioning
• Durable UT anchoring tape
• Watchdog continuity monitor (sounds an instant alarm if the wire is compromised during tiling)
• Detailed step-by-step setup manual
A: Yes. Because the thin heating cable is embedded entirely within the flexible tile adhesive or levelling compound, tile size doesn’t affect performance. Our technical team can help determine the ideal wire spacing for even thermal distribution.
A: With Marmox insulation boards fitted, floor tiles typically warm up in around 30–40 minutes, even over cold concrete. Without insulation boards, it can take longer.
A: Not really. The heating element itself is 2.2–2.4mm thick and fits within your standard adhesive layer or protective screed, generally adding no noticeable height to your floor profile.
A: Warmup’s own published guidance puts an average bathroom (500 watts) at roughly $0.50 to $0.75 per day, or about $15–$20 per month, using a thermostat at normal operating temperature.
A: Every thermostat in our range connects with our undertile wires. For wet areas, we recommend a digital controller with an active floor temperature sensor to manage heat levels safely.
A: Yes. Warmup’s Wetroom System — combining undertile heating with Marmox building products and Ardex waterproofing — is BRANZ Appraised (No. 774, 2019) specifically for internal wet areas finished with tile or stone, including shower floors.