Is Rinnai a Good Choice for Melbourne Homes?
Yes, for homeowners who want proven efficiency from a brand that has designed, built and tested heating products in Melbourne for more than 50 years.
The SP6’s Quatrra 4-pass condensing heat exchanger recovers warmth from flue gases that a conventional heater sends straight out the flue. Rinnai puts the result at up to roughly 30% lower gas costs against a 3-star unit, a saving that adds up across a Melbourne heating season stretching from April into October. Because Rinnai has owned Brivis since 2015, the SP6 also accepts ZonePlus multi-zone control and DualComfort add-on refrigerated cooling, delivered via the same ductwork as the heating.
King & Sons installs the current Rinnai line-up across Melbourne, including the SP6 (6-star condensing) and the BX5 (5-star non-condensing, built for fast changeovers with no condensate drain required). If you already run Rinnai hot water, choosing a Rinnai gas heater Melbourne technicians service alongside it keeps both appliances under one brand, one warranty process and one service visit.
Why Rinnai for Melbourne?
Rinnai Australia opened its doors in 1971, and its Melbourne R&D Centre of Excellence now develops and tests products for Rinnai operations worldwide. That local engineering base sits behind every SP6, and BX5 King & Sons fits Rinnai heating Melbourne customers.
SP6 6-Star Quatrra
Condensing heat exchanger; up to around 30% lower gas costs than 3-star.
DualComfort Add-On Cooling
Refrigerated cooling delivered through your existing Rinnai gas ductwork and grilles.
ZonePlus Multi-Zone
Up to four zones, each with its own time and temperature.
Melbourne Since 1971
Local R&D; 5-year domestic warranty; one brand for hot water and heating.

Rinnai Products King & Sons Installs in Melbourne
King & Sons installs the current range of Rinnai ducted heating Melbourne homes can choose from, and handles servicing, repairs and fault-finding in every suburb.
| Series Name | System Type | Capacity Range | Key Feature |
|---|---|---|---|
| SP6 6-star | Ducted Gas Heating | 15kW to 35kW | Quatrra condensing heat exchanger; 6-star rated; ZonePlus compatible; DualComfort cooling compatible; condensate drain required |
| BX5 5-star | Ducted Gas Heating | 20kW to 30kW | Non-condensing 5-star; no condensate drain, so changeovers move quickly; ZonePlus compatible |
What is the Rinnai SP6?
The SP6 is Rinnai’s flagship 6-star condensing ducted gas heater, available from 15kW to 35kW. Its Quatrra technology draws extra heat out of the flue gases, which Rinnai says trims annual gas costs by up to around 30% relative to a 3-star heater. It works with ZonePlus multi-zone control and DualComfort add-on refrigerated cooling, and installation requires a condensate drain. King & Sons fits the Rinnai SP6 Melbourne-wide, and it is the Rinnai 6-star heater Melbourne buyers pick when gas savings come first.
What is the Rinnai BX5?
The BX5 is Rinnai’s 5-star non-condensing heater, offered in 20kW and 30kW. With no condensate drain to run, it is the quicker changeover option for homes without a drain point near the heater. It supports ZonePlus, and a Rinnai BX5 Melbourne installation gives owners of an older 3-star or unrated unit a straightforward efficiency upgrade, usually completed in a single day.
Rinnai Heating Melbourne FAQs
Commitment To Quality Service and Customer Satisfaction
Our skilled technicians fit, maintain and repair every Rinnai gas heater Melbourne homes run from the current range, handling SP6 Quatrra installations, DualComfort cooling add-ons, fault diagnosis and same-day BX5 changeovers. Licensed under AU069174 and rated 4.8 stars by 167+ Google reviewers, King & Sons can arrange a free on-site quote covering your Rinnai heater installation Melbourne project, or price ducted air conditioning if you prefer a dedicated cooling system.
Other Ducted Gas Heating Brands We Install in Melbourne
Comparing Rinnai ducted heating Melbourne options with other makes? Line up the full list of ducted gas heating brands side by side.
Brivis
A fixture in Melbourne homes since the 1980s, known for ICE integrated refrigerated cooling, which flows through the heater's own ducts and uses the same ZonePlus controller.
Braemar
The TQS7 Ecostar pairs an inverter motor, unique among Australian ducted gas heaters, with the country's top residential gas heater rating at 7-star equivalent.
Bonaire
The MB4 can drop to a tenth of its full output for gentle heat on mild days, with 4-zone control standard on the MB4 and MB5.

