Underfloor Heating NZ
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Complete Guide to Underfloor Heating NZ: Installation, Costs & Benefits
Underfloor heating is fast becoming the go-to central heating solution for New Zealand homes, and we can see why. Instead of hot air blowing around from wall units, warmth rises gently from the floor up — exactly where you feel it most. At Livella Underfloor Heating, we’ve installed systems throughout Auckland, Christchurch, Wellington and across NZ, and we’ve seen countless cold, draughty homes transformed into warm, comfortable spaces. Many of our clients tell us they wish they’d done it years earlier.
This guide walks you through everything you need to know about underfloor heating NZ — electric system installation, costs, and long-term benefits tailored to our local climate. We’ve created this resource for Kiwi homeowners planning renovations, builders working on new homes, and anyone looking for a more energy-efficient heating solution.
By the end of this guide, you’ll understand:
- Realistic installation and operating costs in NZ
- NZ Building Code and insulation requirements
- Energy efficiency benefits compared to radiators and heat pumps
- How to choose the right system for your floors and layout
Understanding Underfloor Heating Systems
Underfloor heating works by radiating warmth upward through the floor surface, creating even, consistent heat across the entire room. In New Zealand — where winter mornings are frosty and damp conditions are common — this approach solves the problem of cold concrete slabs and chilly tiled floors.
Instead of heating air that rises to the ceiling, floor heating warms the floor itself, which then gently radiates heat into your living space. That means warmth where you actually live, not wasted heat above your head.
Electric Underfloor Heating
Electric underfloor heating uses heating cables or mesh mats installed beneath your floor covering. These systems convert electricity directly into heat and are controlled by thermostats that keep each room at a comfortable temperature.
In NZ, installation must meet electrical standards and be completed by a licensed electrician. Systems typically run on 230V and use 100–200 watts per square metre, depending on insulation and product choice.
We often recommend electric underfloor heating for bathrooms, ensuites, kitchens, and smaller areas where quick heat-up times and targeted comfort make the most sense financially.
Underfloor Heating Applications in NZ Homes
Now that we’ve covered system types, let’s look at where underfloor heating delivers the biggest benefits in typical New Zealand homes.
Bathroom and Ensuite Heating
There’s nothing worse than stepping onto icy tiles on a winter morning. Under-tile heating in bathrooms makes daily routines far more comfortable.
Heated floors also help reduce moisture build-up, which is a big deal in NZ homes prone to dampness and mould. Warm, dry tiles create a healthier environment and help protect finishes.
Electric systems are perfect here — switch them on 20 minutes before you shower and enjoy warm floors without running heating all night. You also gain wall space by removing bulky heaters or towel rails.
Living Areas and Open-Plan Spaces
Modern Kiwi homes often feature open-plan living, which can be tricky to heat evenly with radiators or ducted systems. Underfloor heating solves this by warming the entire floor surface.
In homes with concrete floors, in-slab electric heating is incredibly efficient. The slab stores heat and releases it gradually, maintaining stable temperatures throughout the day.
Tiles, polished concrete, stone, engineered timber, and even carpet can work with underfloor heating, though harder surfaces offer the best heat transfer.
Commercial and Multi-Unit Applications
New builds are the easiest and most cost-effective time to install underfloor heating. Cables are laid before the slab pour, making integration seamless.
Retrofit projects require more planning. Many older NZ homes have minimal insulation, so we often install low-profile electric mats that add only 6–12mm to floor height. This helps avoid major changes to doors, cabinetry, and skirting.
Installation complexity has a direct impact on price — which brings us to costs.
NZ Electric Underfloor Heating System Cost Guide
Indicative pricing for underfloor heating in NZ:
| System Type | Installation Cost | Typical Running Cost | Maintenance Cost | Lifespan |
|---|---|---|---|---|
| Electric Underfloor Heating – In-slab | $900 – $3,000 per room | ~ 6c per m², per hour | $0 | 25+ years |
| Electric Underfloor Heating – On-slab (Screed/Mats) | $900 – $1,500 per room | ~ 3c per m², per hour | $0 | 25+ years |
| Hydronic In-slab Heating | $12,000 – $25,000+ whole home | Variable (depends on gas/electric heat source) | ~$300–$800 per year | 20–30 years |
| Ducted Heating (Reverse Cycle or Gas) | $8,000 – $20,000+ whole home | Variable (higher for whole-home use) | ~$150–$400 per year | 10–15 years |
Summary:
- In-slab electric suits new builds where thermal mass is desired, with predictable running costs and no maintenance.
- On-slab electric is ideal for renovations, with faster heat-up times and lower running costs per m².
- Hydronic heating can perform well in large, highly insulated homes but involves high upfront costs, complex plant equipment, and ongoing servicing.
- Ducted heating has lower install cost than hydronic for whole-home coverage but requires regular maintenance and typically has a shorter lifespan.
Disclaimer:
Actual installation and running costs will vary depending on room size, insulation levels, electricity or gas rates, climate, system design, and usage patterns.
Common Challenges and Solutions in NZ
Every home is different, and we often encounter the following NZ-specific issues.
Problem
Cold Concrete Slab Issues
Solution
Uninsulated slabs can pull heat downward. We solve this by installing insulation boards and edge insulation to keep warmth moving upward where it belongs.
Problem
High Power Bills Concern
Solution
Smart thermostats and zoning make a big difference. We program systems to heat only occupied areas and align operation with off-peak power or solar generation.
Problem
Retrofit Installation Complications
Solution
Low-profile systems designed for renovations help avoid major structural changes. These add minimal height while still delivering excellent performance.
Maintenance and Repair of Underfloor Heating Systemss
Underfloor heating systems are low maintenance, but regular checks help ensure long-term performance.
Electric systems require minimal servicing, though thermostats and sensors should be checked if performance changes.
A well-maintained system delivers consistent, even heat and helps prevent dampness and mould — a big plus in NZ homes.
Conclusion and Next Steps
Underfloor heating is one of the most effective ways to create a warm, healthy, energy-efficient home in New Zealand. Done right, it provides invisible comfort, frees up wall space, and reduces dampness and dust circulation.
Your next steps:
- Review your current heating costs
- Arrange a professional heat loss assessment
- Get quotes from experienced NZ installers
- Plan installation alongside renovations where possible
Underfloor heating also pairs beautifully with smart home controls and renewable energy like solar and heat pumps.
If you’re considering underfloor heating NZ, get in touch with Livella Underfloor Heating today. We’re happy to assess your home and provide expert advice and a detailed quote.
Underfloor Heating FAQs for NZ Homeowners
Can underfloor heating be installed in an existing NZ home?
Yes, Livella Underfloor Heating can install electric underfloor heating in existing NZ homes, especially during bathroom or kitchen renovations where new flooring is being laid.
Is underfloor heating suitable for timber floors in NZ houses?
Yes, underfloor heating can be installed under engineered timber in New Zealand homes when the system is designed correctly to manage heat output and protect the flooring.
How long does it take to install underfloor heating in NZ?
Most underfloor heating installations in New Zealand take one to three days depending on room size, floor type, and whether it's a renovation or new build.
Do I need council consent to install underfloor heating in NZ?
In most New Zealand homes, underfloor heating does not require council consent, but electrical and plumbing work must be completed by licensed trades.
Can underfloor heating be installed in concrete slab homes in NZ?
Yes, hydronic underfloor heating is commonly installed in concrete slabs for new New Zealand homes, providing efficient whole-home warmth.
How much does underfloor heating cost in New Zealand homes?
Underfloor heating in New Zealand typically costs $900 - $3,000 per room, depending on floor type and insulation.
Is underfloor heating expensive to run in NZ?
Underfloor heating is economical to run in well-insulated NZ homes because radiant heat operates at lower temperatures than traditional heaters.
Does underfloor heating increase home value in New Zealand?
Yes, underfloor heating is considered a premium comfort feature in NZ homes and can increase resale appeal, particularly in colder regions.
Is underfloor heating cheaper than heat pumps in NZ?
Underfloor heating can be cheaper to run than heat pumps in zoned areas, especially when paired with good insulation and smart thermostats.
Can underfloor heating reduce power bills in NZ?
When combined with insulation and energy-efficient controls, underfloor heating can help manage energy use and reduce overall heating costs in NZ homes.
Is underfloor heating good for New Zealand winters?
Yes, underfloor heating provides consistent radiant warmth that's ideal for New Zealand's cold, damp winters.
Does underfloor heating help with dampness in NZ homes?
Underfloor heating helps reduce condensation and dampness by keeping floor surfaces warm and dry, which is beneficial in many NZ homes.
Will underfloor heating keep the whole house warm in NZ?
Hydronic underfloor heating can heat an entire NZ home when installed as a whole-house system with proper insulation.
Is underfloor heating safe for kids and pets?
Underfloor heating is very safe for families in NZ homes because all heating elements are concealed beneath the floor with no exposed hot surfaces.
Does underfloor heating create even warmth throughout the room?
Yes, underfloor heating delivers even radiant heat across the floor surface, eliminating cold spots common in NZ homes with traditional heaters.
Can underfloor heating be used under tiles in NZ homes?
Tiles are the most efficient floor covering for underfloor heating in NZ homes because they transfer heat quickly and retain warmth.
Does underfloor heating work under carpet in NZ houses?
Yes, underfloor heating can be installed under carpet in NZ homes when low-tog underlay and suitable carpet materials are used.
Is polished concrete good with underfloor heating in NZ?
Polished concrete works exceptionally well with underfloor heating in NZ homes as it stores and radiates heat efficiently.
Can vinyl flooring be used with underfloor heating in NZ?
Many modern vinyl floors are compatible with underfloor heating in NZ when the product is rated for heated subfloors.
Will underfloor heating damage wooden floors in NZ?
When properly designed and controlled, underfloor heating will not damage engineered timber floors in NZ homes.
Can underfloor heating run on solar power in New Zealand?
Yes, underfloor heating systems can be paired with solar power in NZ homes to improve efficiency and reduce running costs.
Does underfloor heating work with heat pumps in NZ?
Hydronic underfloor heating works very well with air-to-water heat pumps in NZ homes, delivering efficient low-temperature heating.
Are smart thermostats available for underfloor heating in NZ?
Yes, Livella Underfloor Heating offers smart thermostat options in NZ that allow homeowners to control heating zones and schedules easily.
Is underfloor heating considered energy efficient in NZ?
Underfloor heating is energy efficient in NZ homes because it provides radiant heat evenly and reduces heat loss compared to ducted systems.
Can underfloor heating be zoned in different rooms in NZ homes?
Yes, underfloor heating systems in NZ can be zoned so different rooms operate at different temperatures for comfort and energy savings.
Thousands of Renovations and New Builds with Happy Families
5 Bedroom Home
Torquay, VIC
“I recently had the pleasure of working with the Livella team who undertook an in-slab heating installation in a new 5 bedroom home project. The results have exceeded all of our expectations. It’s a luxurious addition that combines efficiency and comfort. I can’t recommend the Livella team highly enough. If you’re considering underfloor heating, don’t hesitate, It’s an investment that will not only make your home warmer but also elevate its overall appeal and value.”
Bathroom Renovation
Lilyfield, NSW
“Recently we had Livella underfloor heating system installed in our bathrooms and couldn’t be happier with the results. This upgrade has truly transformed the bathrooms. It’s efficient and adds a touch of luxury to our daily lives. I would highly recommend this system to anyone, It’s a worthwhile investment the whole family love it."
3 Bedroom Home
Greenwich, NSW
“I recently had the privilege of having a underfloor heating system installed in my home, and I’m absolutely thrilled with the results. The team at Livella worked closely with us to customise the heating design to suit our specific needs and preferences. They took into consideration the layout of our home, room usage, and even our preferred temperature settings for each area. The team demonstrated exceptional skill and expertise throughout the project. The installation process was efficient, and they paid great attention to detail, resulting in a seamless and flawless finish.”
