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Warm Floors, Lower Power Bills & Whole-Home Comfort — All Winter Long

Warmth NZ designs energy-efficient hydronic underfloor heating systems that keep Kiwi homes consistently warm, healthy, and comfortable without the high running costs of traditional heating.

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What exactly is Hydronic Underfloor Heating and how does it work?

Using advanced hot water heat pump technology and the natural heat-retaining properties of concrete, our hydronic underfloor heating system ensures the lowest possible running costs for whole-home heating.

The process is simple with

air-to-water heat pumps:

The process is simple with

air-to-water heat pumps:

During construction, pipes are installed within the foundation of your home before the concrete is poured.

Once construction is complete, water is circulated through these pipes and heated by an air-to-water heat pump system.

This advanced home heating solution efficiently transfers heat into the concrete, creating a natural thermal mass that delivers comfortable and consistent underfloor heating.

It's an ideal way of warming your house—especially during chilly South Island winters—offering both energy efficiency

and year-round comfort for Kiwi homes.

During construction, pipes are installed within the foundation of your home before the concrete is poured.

Once construction is complete, water is circulated through these pipes and heated by an air-to-water heat pump system.

This advanced home heating solution efficiently transfers heat into the concrete, creating a natural thermal mass that delivers comfortable and consistent underfloor heating.

It's an ideal way of warming your house—especially during chilly South Island winters—offering both energy efficiency

and year-round comfort for Kiwi homes.

The result is a warm, comfortable and energy-efficient home.

Hydronic heating systems Christchurch are becoming increasingly popular for homeowners seeking efficient and sustainable home heating.

When it comes to powering your hydronic underfloor heating, hot water heat pumps are the preferred solution, offering both eco-friendly performance and long-term cost savings.

By utilising an air-to-water heat pump, many clients in Christchurch report reducing their underfloor heating energy costs to just a quarter of what traditional electric systems would require. For even greater savings, consider integrating solar PV or taking advantage of off-peak night rates.

Hydronic heating systems Christchurch are becoming increasingly popular for homeowners seeking efficient and sustainable home heating.

When it comes to powering your hydronic underfloor heating, hot water heat pumps are the preferred solution, offering both eco-friendly performance and long-term cost savings.

By utilising an air-to-water heat pump, many clients in Christchurch report reducing their underfloor heating energy costs to just a quarter of what traditional electric systems would require. For even greater savings, consider integrating solar PV or taking advantage of off-peak night rates.

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North Canterbury

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South Canterbury

Benefits of Hydronic Underfloor Heating

Graph sourced from Consumer NZ

When it comes to heating our homes in New Zealand—especially across the South Island’s colder regions—finding the right balance between comfort and sustainability is key.

Energy-efficient central heating solutions are becoming the go-to choice for homeowners wanting consistent warmth while keeping energy use and costs in check.

One standout option is hydronic underfloor heating, which offers a highly efficient, low-impact way to warm your home from the ground up. But how exactly does this form of underfloor heating work, and what are the real benefits for Kiwi households?

When it comes to heating our homes in New Zealand—especially across the South Island’s colder regions—finding the right balance between comfort and sustainability is key.

Energy-efficient central heating solutions are becoming the go-to choice for homeowners wanting consistent warmth while keeping energy use and costs in check.

One standout option is hydronic underfloor heating, which offers a highly efficient, low-impact way to warm your home from the ground up. But how exactly does this form of underfloor heating work, and what are the real benefits for Kiwi households?

📍 Consistent and comfortable heat distribution throughout your home.

📍 Energy-efficient technology, reducing your energy bills.

📍 Eco-friendly, utilising advanced hot water heat pump technology.

📍 Minimal maintenance and long-lasting performance.

📍 Consistent and comfortable heat distribution throughout your home.

📍 Energy-efficient technology, reducing your energy bills.

📍 Eco-friendly, utilising advanced hot water heat pump technology.

📍 Minimal maintenance and long-lasting performance.

Get Your Free Heating EstimateTrusted by homeowners and builders across New Zealand.

Warmth.NZ - Your leading specialist in heating & ventilation in New Zealand, trusted by the experts

Warmth.nz - Your leading specialist in heating & ventilation in New Zealand, trusted by the experts

A leading specialist in hydronic underfloor heating, hot water heating, and home ventilation solutions for

energy-efficient, comfortable living.

Whole-home climate specialists building healthier, more efficient homes through seamlessly integrated heating, hot water, and ventilation systems you can rely on for decades.

Hydronic Underfloor Heating

Radiant, whole-home heating using advanced hot water heat pump technology and concrete’s natural heat-retaining properties.

Heat Recovery Ventilation

Continuously replaces stale air with fresh air while recovering heat to reduce energy loss - improving air quality and controlling moisture.

Boiler Conversions & Retrofits

Upgrade your gas, diesel, or wood/coal burner to our efficient R290 hot water heat pump for affordable, year-round heating.

Get Your Free Heating EstimateTrusted by homeowners and builders across New Zealand.

Discover the Warmth.NZ difference

Hydronic underfloor heating uses efficient heat pump technology to amplify energy, making it the most cost-efficient heating system available for New Zealand homes.

Make chilly winters a thing of the past with warmth in every room. In summer time the system works in reverse, keeping your home cool.

Unlike forced air, our system is a radiant heat source which creates longer lasting, feel-good warmth while safely reducing mould, condensation and draughts.

Thanks to our highly energy efficient R32 air-to-water heat pump technology, Warmth.NZ’s system is easy on fossil fuels and a better sustainable option to consider for the environment.

Get Your Free Heating EstimateTrusted by homeowners and builders across New Zealand.

Your leading specialists in heating & ventilation, trusted

by kiwi families

We’re The Specialists

We’re passionate about helping Kiwi families heat their homes efficiently. That’s why we focus solely on hydronic underfloor heating—trusted by both homeowners and builders for its comfort and performance.

We’re Efficient & Dependable

Our approach is as reliable as our system—clear quoting, seamless coordination with your builders, and on-time installation. We’re hands-on from start to finish to keep everything running smoothly.

Your Satisfaction Is Our Goal

We deliver more than warmth—we’re here to make the entire experience easy, caring, and reliable. Your comfort and satisfaction matter, and we’ll go the extra mile to ensure it lasts.

Testimonials

Nigel & Claire

"If I were to build again, I would undoubtedly choose underfloor heating and Warmth.NZ," he states. "The quality of their work and their commitment to customer satisfaction impressed me. They delivered a warm, comfortable home within our budget and helped us avoid a cookie-cutter solution."

Brian

"Getting older, we just didn’t want fireplaces or log burners. So we chose underfloor heating," says Brian. “Our bill has gone down substantially. I’ve seen the pattern and I watch the graphs, and I’m very confident that we’re going to save a lot of money. We’ve been very happy, and we’d thoroughly recommend Warmth.NZ.”

"After a last-minute letdown by another company, we turned to Warmth.NZ. It was the best decision we could have made. They were not only timely but also logical in their approach and really great to interact with. Our bills have never reached the levels seen in our previous properties, and we've maintained an extremely comfortable indoor temperature. We wouldn’t hesitate to use them again in another build.”

- Greg M

“We absolutely love our underfloor heating system & we believe it’s the best way to heat a house. Well done to the crew at Warmth.NZ for such a good job! Their communication and workmanship were outstanding!”

- Roger M

“The product is amazing - our house sits at 20 degrees all day in winter with no heat pump on and everything works well. The guys at Warmth.NZ are friendly and know their stuff.

It is great that I was able to work with both them and One Vision Solar to create a system which runs on solar and makes heating my floor and house even more affordable.

If you are looking for a cost effective heating solution and want to incorporate in slab heating, hot water heat pump and solar, I would highly recommend talking to Warmth.NZ”

- Dan G

“Warmth.NZ supplied a replacement heat pump (supplied by a third party) to our existing underfloor system of seven years. From initial contact the knowledge and experience of underfloor systems ensured we were in good hands.

The install team were professional and friendly, the heat pump supplied is quiet and easy to operate and our power bill has reduced.

Our home is warm again as only hydronic underfloor can do. Huge thank you to Zsuzsa, Brian and team, they are specialists in hydronic underfloor heating”

- Keith M

Get Your Free Heating EstimateTrusted by homeowners and builders across New Zealand.

FAQs

What exactly is hydronic underfloor heating?

Radiant, whole-home heating using advanced hot water heat pump technology and concrete’s natural heat-retaining properties.

How much does hydronic underfloor heating cost in NZ?

Hydronic underfloor heating costs in New Zealand vary depending on the size of the home, system design, and insulation levels. Installation costs can differ significantly between projects, but running costs are typically lower than those of traditional electric heating systems due to higher efficiency.

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Is hydronic heating cheaper than electric heating?

Yes, hydronic underfloor heating is generally cheaper to run than electric heating. It operates at lower temperatures and uses energy more efficiently, especially when powered by an air-to-water heat pump.