Rheem Heavy Duty Gas 275L Outdoor
SunCity Hot Water supplies, installs and services the Rheem Heavy Duty Gas 275L Outdoor across the Sunshine Coast, Brisbane, Bribie Island and Gympie — backed by our quality workmanship guarantee. Call 1300 728 122.
Contact SunCity Hot Water today to discuss your commercial hot water needs and arrange professional installation and maintenance of the Rheem Heavy Duty Gas 275L Outdoor water heater. Ensure your business enjoys reliable hot water supply with a system built for performance and durability.

Key Features
Multi-Fin™ Technology
Enhances heat transfer for faster, more efficient water heating, reducing energy consumption and delivering hot water promptly when needed.
Hot Surface Ignition
Improves energy efficiency and reliability by eliminating the need for a continuously burning pilot light.
Digital Adjustable Thermostat
Allows precise temperature control up to 82°C, ideal for sanitisation and hygiene-critical applications.
Product Documents

Durability You Can Trust
The combination of multiple anodes and a double layer of vitreous enamel provides excellent corrosion resistance, reducing maintenance costs and downtime while extending the unit’s lifespan.

Designed for Outdoor Use
Built to withstand diverse outdoor conditions, this water heater offers dependable performance across Australian climates.
Easy Replacement
The design allows straightforward replacement of existing units, minimising installation time and operational disruption.
Installation, Maintenance & Warranty
Installation

The Rheem Heavy Duty Gas 275L Outdoor is compatible with most existing setups, enabling quick replacement of older units. Indoor installation is possible with a separately purchased sealed room kit, although the unit is primarily intended for outdoor use to ensure proper ventilation and safe operation.
Maintenance

Routine maintenance is simple and ensures the unit continues operating at peak efficiency. Regular inspections and servicing help extend the water heater’s lifespan and maintain reliable hot water supply.
Warranty
The water heater is backed by a 5-year cylinder warranty covering defects and failures, along with a 12-month warranty on parts and labour.
Frequently Asked Questions
How does the built-in Building Management System (BMS) work?
The BMS provides real-time monitoring and control, optimising performance and energy efficiency by tracking usage patterns and adjusting operations accordingly.
Can the Rheem Heavy Duty Gas 275L replace my existing water heater easily?
Yes, the unit is designed for easy replacement of older models, minimising installation time and disruption.
Is the water heater suitable for indoor use?
The 275L model is primarily intended for outdoor installation. Indoor use is only recommended with a sealed room kit to ensure proper ventilation and safe operation.
Is gas hot water cheaper than electric?
Gas hot water is often cheaper to run than peak-rate electricity, particularly for larger households. Continuous-flow gas only heats water on demand, avoiding the standby heat loss of a storage tank. Actual running costs depend on your gas rates and usage.
How does gas hot water work?
A gas hot water system burns natural gas or LPG to heat your water — either instantly as it flows through a continuous-flow (tankless) unit, or stored in a heated tank ready for use.
How long do gas hot water systems last?
Gas hot water systems typically last around 10–12 years with regular servicing. Continuous-flow units often last longer than storage models.
What size gas hot water system do I need?
Continuous-flow gas systems are sized by flow rate (litres per minute) based on how many hot water outlets run at once; gas storage systems are sized by tank capacity. SunCity will match the right unit to your household's peak demand.
How much does it cost to install a hot water system?
SunCity Hot Water quotes all-inclusive pricing — supply, installation by licensed plumbers and electricians, tempering and pressure-relief valves, removal of the old unit, QBCC fees and GST — with no hidden extras. Call 1300 728 122 for a fast quote.
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