we deliver premium underfloor heating and solar energy solutions
Across Australia. Whether you’re building new or upgrading, our system designed for efficiency, comfort, and sustainability tailored to Australia’s diverse climate.
- +61 434 311 741
- sales@prime21.com.au
Why Is Underfloor Heating Becoming the New Trend in Heating Systems?
Electric & Hydronic Underfloor Heating
Underfloor heating is an efficient and comfortable way to warm your home,
offering consistent heat distribution that outperforms many traditional systems.
The two main types Electric and Hydronic (Water-Based)
each offer distinct advantages depending on your home, budget, and energy goals
Electric Underfloor Heating
Electric cables or heating mats are installed beneath the floor. When powered, they radiate heat evenly throughout the space.
✔️ Key Advantages:
- Fast and easy installation – perfect for renovations or small rooms
- Lower initial setup costs
- Accurate temperature control via smart thermostats
- No need for plumbing or pumps
✔️ Things to Consider:
- Higher electricity costs may increase long-term expenses
- Less effective in heating large areas
- Efficiency depends on your energy source
Hydronic Underfloor Heating
Warm water circulates through a network of pipes
under the floor, providing gentle and consistent heat.
The system is powered by a boiler or compatible energy source.
✔️ Key Advantages:
- Greater energy efficiency, especially with renewable energy
- Lower running costs over time
- Ideal for heating large spaces or entire homes
- Can be integrated with solar or other sustainable systems
✔️ Things to Consider:
- Installation is more complex and time-intensive
- Higher upfront costs for materials and labor
- Regular maintenance required (pumps, piping, heating source)
About us
Prime 21 Pty Ltd
Uunderfloor heating and Solar energy systme Specialist
With extensive experience and proven expertise in underfloor heating across all regions of Australia including its coldest climates, we are a fully licensed electrical company committed to delivering superior customer satisfaction. We continuously invest in the development of innovative systems to provide more efficient, reliable, and future-ready solutions.
Diy FloorHeating Solution Pakaging
Hydronic Quotation Specialists and Skilled Engineer Technicians
With expert knowledge in underfloor heating and solar energy systems, we provide complete solutions from system design to a detailed DIY parts list with a quote.
Ongoing customer support is included every step of the way.
Contact the Prime21 team today on info@prime21.com.au
or 0434 311 741 to learn more about Prime premium
hydronic products or to discuss your upcoming project.
High-Value Floor heating products
Precision Products, Dispatched Same Day
We package and dispatch products same-day to anywhere nationwide. For underfloor heating and solar system deliveries, our team is available 24/7 to assist. Fast, reliable shipping guaranteed.
Feel free to reach out anytime with your product inquiries.
Partnering with Prime21 means working with a passionate team dedicated to delivering the highest quality in floor heating design and manufacturing. We focus on energy and resource-efficient solutions without compromising comfort or performance Our head office is located at Unit 16 / 2 Railway Parade, Lidcombe NSW 2141.
Answers to Common Inquiries
Underfloor heating is a modern indoor heating solution that involves installing electric heating elements beneath the floor surface. It gently warms the entire room by radiating heat upward from the ground. Depending on the system, it heats through conduction, radiation, or convection—all of which are efficient and easy to control. The warmth starts from the floor, creating a comfortable environment from the feet up. This system is compatible with most floor types and offers an energy-efficient alternative to traditional heating methods.
Absolutely. In-floor heating systems offer efficient, long-lasting comfort with flexible climate control all year round. Designed for durability—many systems come with warranties of up to 15 years—they provide consistent warmth that rises evenly from the ground up, helping to reduce energy waste and lower your heating bills. Since heat isn’t lost to the ceiling, your rooms stay warmer with less energy use. Most systems are programmable, so you can tailor your heating schedule to match your lifestyle. Plus, radiant heat can help lower humidity levels, reducing the risk of mould and damp—an especially valuable benefit in bathrooms and other moisture-prone areas.
Underfloor heating systems are suitable for a variety of floor types, including carpet, timber, bamboo, vinyl, and engineered flooring. Whether you’re planning a renovation or a new build, there’s a compatible option for most surfaces. To help ensure the best results, there are plenty of resources available outlining compatibility with different underlays, adhesives, and levelling products. If you need help deciding what works best for your space, don’t hesitate to reach out for expert advice.
If you’re considering a DIY approach to installing electric radiant floor heating, there are plenty of step-by-step guides available to help you through the process. For those hiring a professional, keep in mind that a licensed electrician will need to visit your property twice: initially to set up the power supply and conduits, and later to connect the thermostat and finalize the electrical connections after the flooring is installed. Our heating kits are designed with user-friendly installation in mind, but if you encounter any questions or need assistance, professional support is readily available to ensure a smooth setup.
Absolutely, installing radiant floor heating over an existing concrete slab is feasible. While in-slab heating typically needs to be planned during the concrete pour, you can still install systems within a screed layer or beneath floor coverings such as tiles, timber, or carpet—provided this is done before those finishes are laid. This approach allows you to upgrade your heating without major structural changes.
Typically, carpet is not the best choice for areas with in-slab heating. This is because slab heating systems usually take longer to warm up compared to electric carpet heating, which heats quickly and efficiently. Installing carpet over in-slab heating may reduce the overall effectiveness and responsiveness of the system.
The initial investment for radiant floor heating is relatively affordable. For example, installing a system during a minor bathroom renovation can start at around $250, depending on the size of the area being heated. Pricing is typically based on the surface area covered, allowing you to adjust the installation scale to fit your budget and space requirements, making it a flexible and cost-effective heating option.
Thanks to advances in technology, the running costs of in-floor heating are often much lower than many expect. Modern systems operate at the minimum power needed to comfortably warm your space. Programmable thermostats play a key role by maintaining your desired temperature efficiently and allowing you to set custom schedules that fit your lifestyle. Some thermostats even feature smart algorithms that calculate the “lead time” — how long a room needs to preheat — helping to optimize energy use and reduce costs even further. For a more detailed breakdown of running expenses, additional information is available upon request.
Yes, you definitely can! It’s best to have the heating installed underneath your furniture to avoid cold spots if you decide to rearrange later. Whether it’s sofas, tables, or cabinets, as long as the furniture is raised on legs or floating, it’s perfectly safe to have heating beneath. Expanding your heating coverage to include these areas usually costs relatively little—often just a few tens of dollars. If you have questions about pricing or specific furniture types, feel free to ask for more details.