Heat Transfer System One to Four Room Kit

Available from Stock

HT04 R1 Duct 4-Room Heat Transfer Kit

Whole-home comfort. One heat source.

Don’t let that excess heat go to waste—put it to work in four rooms where it’s needed most. The HT04 R1 Duct 4-Room Heat Transfer Kit is a smart, energy-efficient way to spread warmth from one heated room throughout your home—without the need for extra heaters or added power bills.

Perfect for homes with wood burners, pellet fires, or any room that tends to overheat, this system uses a high-performance inline mixed flow fan and R1.0 insulated ducting to quietly move warm air to up to four additional spaces.

With 18 metres of insulated ducting included and the ability to handle longer duct runs, it’s ideal for spreading warmth across larger or multi-zone layouts.

Why You’ll Love the 4-Room Kit:

Distributes heat to four rooms using warmth you’re already generating
Reduces heating costs and avoids the need for multiple heaters
No major renovations required – fast and flexible to install
R1.0 insulated ducting retains heat and reduces noise
Powerful, quiet fan delivers consistent airflow without disruption
Downjet grilles push air straight to the floor for faster, more even comfort
Individual airflow dampers let you control heat flow to each room

Whether you're warming multiple bedrooms, a hallway, or office spaces, the HT04 4-Room Kit delivers smart, efficient comfort throughout your home.

Simple. Cost-effective. Comfort, multiplied.

Components

1 x Inline Mixed Flow 200Ø
1 x 250x250 Filtered Inlet Ceiling Grille
1 x Grille to Duct Adaptor 250x250-150
4 x Downjet 150Ø Diffuser
1 x 200Ø 6m R1.0 Rated Flexible Duct
2 x 150Ø 6m R1.0 Rated Flexible Duct
1 x Y Branch 200-150-150
2 x Y Branch 150-150-150
1 x Room Thermostat
1 x Roll Reinforced Foil Duct Tape 50m

Specifications

HT04 Fan

Fan – Technical Specifications

Fan Type:
200 mm mixed-flow inline fan, engineered for efficient and quiet air transfer across multiple rooms in heat transfer systems.

Motor:
Single-phase motor operating at 230–240 V, 128 W. Designed for durability, reliability, and long service life.

Airflow Performance:
Delivers up to 236 L/s (850 m³/hr), providing powerful airflow ideal for distributing warm air through larger multi-room systems.

Sound Level:
Operates at 48 dB(A) measured at 3 m — quiet enough for residential use while delivering strong performance.

Ducting Capability:
Capable of supporting duct runs of up to 18 m, making it ideal for medium to large home installations.

HT04 Intake Grille

This 250 x 250 mm filtered eggcrate intake grille features a built-in filter to help trap dust and debris before it enters your ducting system. The filter is easy to remove and clean, making maintenance simple and keeping your air transfer system running efficiently.

Grille to Duct Adaptor – 250 x 250 to 150Ø

This adaptor connects a 250 x 250 mm grille to 150 mm (150Ø) ducting, providing a secure and efficient transition between grille and duct. Perfect for use with filtered eggcrate grilles and heat transfer systems, ensuring smooth airflow and easy installation.

HT04 Downjet Grille

Airflow Direction:
Designed to direct warm air straight downward, promoting faster and more even heat distribution throughout the room.

Outlet Size:
150 mm (150Ø) neck connection for compatibility with standard ducting and effective, concentrated airflow.

Functionality:
Optimised to push warm air to the occupied zone, reducing stratification and improving comfort levels.

Design:
Slim, low-profile construction for a clean, unobtrusive ceiling installation. Blends seamlessly with modern interiors.

150Ø 6m Insulated R1.0 Duct

Strong, durable, and built to last. The R1.0 insulation layer — Enhances energy efficiency and reduces condensate buildup.

Size: 150mm (150Ø), 6m length for optimal air transfer
Durability: Reinforced construction resists tearing in the roof space
Insulation: R1.0 insulation reduces energy loss and maintains warmth
Flexibility: Ideal for tight spaces, offering easy installation and reliability

Room Thermostat:

The HT04 Room Thermostat monitors the room temperature and activates the system to prevent overheating and save energy.

Activation: Turns on when your desired temperature is reached.

Comfort: Ensures a balanced and comfortable home temperature.

We’ve chosen to supply a basic room thermostat with our heat transfer systems. While digital thermostats may look modern, their added features often come at a higher cost without offering practical benefits for most installations. Our focus is on reliable, cost-effective temperature control—simple to use, and perfectly suited to the job.

If you would prefer to upgrade to a digital thermostat, just let us know—we’re happy to arrange it.

150Ø Equal Y Branch (150 x 150 x 150)

Designed to split one duct line into two, this galvanised steel Y branch is perfect for directing airflow to multiple rooms or zones. With equal 150 mm diameter spigots on all three ends, it ensures smooth, balanced distribution and efficient system performance.

Y Branch Reducer (200x150x150)

This galvanised steel Y branch is designed to split a 200 mm duct line into two 150 mm branches, making it ideal for distributing airflow from a larger main line to multiple smaller zones or rooms. With one 200 mm inlet and two 150 mm outlets, it ensures efficient, balanced airflow while allowing for flexible system design and zoning.