Gas Hot Water Systems Gold Coast: Continuous Flow & Storage

Many established Gold Coast suburbs are connected to the natural gas network, but plenty of homes, especially on acreage and in parts of the hinterland, run on LPG from 45 kg cylinders. A gas meter near the front boundary usually means natural gas; cylinders mean LPG. Hot water units are built for one gas type, so we confirm your supply before quoting.

Continuous-flow units from Rinnai, Rheem and others are popular in larger Gold Coast homes because they don't run out. They are sized by litres per minute, and they need enough gas: a big unit on an undersized meter or pipe will struggle when the cooktop is on. We check the meter, pipe size and run before recommending one.

Flued and external units also have clearance rules: distances from windows, doors, eaves and boundaries set by AS/NZS 5601.1. On small lots and townhouse walls that can decide where a unit can go. Every gas installation we complete is tested and comes with a gas compliance certificate.

Your gas supply has to keep up

A continuous-flow unit can draw much more gas than a storage tank while it's running. The meter, regulator and pipework have to deliver enough gas for the new unit and any other gas appliances at the same time. Undersized pipework is a common cause of hot water that fluctuates between hot and cold. We check this before recommending a unit, not after installing it.

Where the unit can go

External units need clearances from windows, doors, vents and boundaries so combustion products disperse safely. Internal units need correct flueing. These rules come from AS/NZS 5601.1 and the manufacturer, and they sometimes decide where a replacement can sit.

Temperature control

Bathroom outlets must be limited to 50°C on new and replacement installations. Some continuous-flow units can be set to deliver no more than 50°C, which can meet the requirement on its own. Storage units need a tempering valve. We'll explain which applies to your system.

Error codes and servicing

Most continuous-flow units show an error code when something goes wrong. Note the code and the model, and switch the unit off and on once at the power point. If the code comes back, don't open the case: send us the code and model. Manufacturers set service intervals for gas water heaters in the owner's manual, and keeping to them helps the unit run safely and efficiently.