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Multi-room electrification

Ducted gas heater → Daikin multi-split

A multi-split can suit homes that need independent room control while keeping the number of outdoor units down. We assess the room loads, connected capacity, pipe routes, electrical supply and outdoor location as one system.

Quote a Daikin Multi-Split Super Multi NX Details

One multi-room pathwayEquipment configuration is selected during the technical assessment — not presented as duplicate system choices.

Existing

Ducted gas heater

Central gas heating
Whole-home heating through ducts
Cooling may be separate or absent

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Upgrade

Daikin multi-split

Compatible outdoor equipment serving multiple rooms
Independent indoor-unit operation
Reverse-cycle heating and cooling
System combination designed to Daikin limits

Daikin Super Multi NX

Designed for multiple rooms with fewer outdoor units

Daikin currently lists Super Multi NX outdoor capacities of 5.2, 6.8, 8.0 and 10.0 kW, with up to five compatible indoor units depending on the combination and design limits.

Up to 5 indoor unitsCompatible combinations selected around actual room requirements

Individual controlOperate rooms independently instead of conditioning every area together

R32 refrigerantCurrent Super Multi NX equipment uses R32

Space-conscious layoutUseful where external wall, side-access or balcony space is limited

VEU example

10 kW household multi-split example

The Victorian Government currently gives an indicative example of up to $2,940 where an eligible ducted whole-of-home gas heater is replaced by a multi-split with a 10 kW outdoor unit. The actual discount must be confirmed for the approved product and activity.

10 kWExample multi-split outdoor capacity

Up to $2,940Indicative household discount in that example

Room-by-roomIndependent indoor-unit control

30 Sep 2026Important rule-change date for ≥10 kW systems

Official references:Victorian Government heating & cooling discounts Daikin Super Multi NX Daikin Premium Inverter Ducted

30 SEP
2026

VEU heating & cooling rules are changing

Victoria has announced changes from 30 September 2026, including a $3,000 minimum co-payment (including GST) for ducted reverse-cycle and multi-split systems with cooling capacity of 10 kW or more, plus a residential multi-split incentive cap. We confirm the rules and rebate value that apply on the date of your installation.

Design matters

What we verify before recommending multi-split

Room heat loads

Indoor-unit capacities are matched to each area rather than selected only by floor area.

Combination limits

Total connected capacity and simultaneous demand must stay within the manufacturer’s compatible combinations.

Pipe routes

Line lengths, vertical separation, branching and future service access influence design and cost.

Outdoor location

Airflow clearance, noise, drainage and practical service access are checked before final placement.

Electrical supply

Circuit requirements and switchboard capacity are assessed before installation.

Property layout

If the home is better suited to ducted reverse cycle, we explain the trade-offs instead of forcing a multi-split.

View Super Multi NX Request Multi-Split Assessment