Description
Rinnai Hotflo 135 litre is a compact external gas hot water heater made for homes that need fast recovery and reliable outdoor installation. It suits households in Blacktown, Mount Druitt, Seven Hills, and across Western Sydney that want efficient natural gas hot water with a neat footprint.
If you are comparing gas systems, browse our hot water shop for upfront pricing and more choices. This model solves the problem of slow hot water recovery during busy mornings. Moreover, it uses Natural Gas, which makes it a smart fit for homes that already run gas and want strong performance from an outdoor unit.
Rinnai Hotflo 135 litre gas hot water heater overview
Rinnai Hotflo 135 litre delivers 135 litres of stored hot water and 209 litres first hour delivery. Therefore, it gives you solid short-term output for everyday household use.
The model number is GHF4135N. It carries a 4.7 star rating. Additionally, it runs on Natural Gas and installs outdoors, which helps free up indoor space and supports tidy external placement.
Its dimensions are 1579 mm high, 420 mm wide, and 508 mm deep. Consequently, it has a narrow physical footprint that suits smaller outdoor spaces and tight side passages.
This Rinnai Hotflo 135 litre suits:
- homes already connected to natural gas
- families needing quick hot water recovery
- outdoor-only installation sites
- properties with limited internal space
- Western Sydney households wanting efficient gas performance
Why choose the Rinnai Hotflo 135 litre?
Rinnai Hotflo 135 litre works well because it combines gas efficiency with a compact outdoor design. However, it still gives you enough first hour delivery for daily household demand.
This unit suits Blacktown and nearby suburbs where homeowners want a reliable gas heater that keeps the inside of the home clear. Additionally, the outdoor location helps simplify installation in many properties.
Because it runs on Natural Gas, it offers fast, dependable hot water without relying on electricity for heating. Therefore, it suits families that want a practical and efficient gas solution.
Warranty information
Rinnai backs the cylinder with an 8 year warranty. In addition, labour and parts carry a 1 year warranty, subject to warranty conditions.
That warranty support adds peace of mind. Moreover, it helps make this outdoor gas unit a dependable long-term choice.
NSW government rebates and savings
For NSW supply and installation orders, both federal STCs and state ESCs are assigned directly to us. Therefore, you receive the rebate benefit as a convenient point-of-sale discount.
For supply-only purchases, the customer must claim the STCs themselves after installation. Consequently, keep your installation and purchase paperwork.
If you are buying in Western Sydney, rebates can help reduce the upfront cost. However, eligibility rules can change, so please check before ordering.
Shipping, delivery, and local installation
We offer fast local delivery and professional installation across Blacktown, Mount Druitt, Seven Hills, and Western Sydney. You can shop online with upfront pricing, or call us if you want same-day service.
For supply and installation orders, our plumbers bring the system directly to your property on the scheduled installation day. Additionally, you can explore the range at our online store before you book.
We focus on quick local service and clear pricing. Therefore, you can upgrade your hot water system without delay.



