Hot Water Systems in Brisbane

Yes. Submerge Plumbing & Gas installs and services all three — gas (storage and continuous-flow), electric (storage), and heat-pump systems. We're not aligned with one brand, so the recommendation you get is based on what suits your household demand and ongoing running cost, not on what we have on the truck. Heat-pump systems in particular have shifted a lot in the last few years and there are good Queensland rebates running on the better units.

Repair makes sense if the unit is under about ten years old and the failed component is a thermostat, element, valve or anode. Replace makes sense if the tank is leaking, the unit is over ten to twelve years old, or the energy bill from running it has crept up significantly. We give you the actual numbers — repair cost, replacement cost, and expected running-cost difference — so you can decide. We're never insulted if you decide to repair.

A like-for-like swap (same fuel, similar size, same location) is usually a half-day job, with hot water restored before we leave. Switching fuel types — gas to heat pump, for example — can take a full day because of new electrical work or pipe runs. We'll always tell you upfront if the household will be without hot water overnight, and if so we can sometimes leave a temporary unit running until the new install is finished the next day.

There are Queensland and federal rebates available on certain heat-pump and solar hot water installs. The list changes — last we checked, the federal small-scale technology certificates discount and Queensland's climate scheme were both running. We'll only tell you a rebate applies after we've verified your unit and address are eligible. The rebate is applied as a discount on the quote, not a cheque you have to chase.

It depends on the number of people in the home and your peak-demand pattern. As a rough guide: a couple typically wants 125–170 L storage or a small continuous-flow unit; a family of four wants 250–315 L storage or a 26-L/min continuous-flow; six-plus people want 315 L storage with two heating elements or a 32-L/min continuous-flow. We'll go through your shower count, dishwasher and laundry use, and recommend specifically. Undersizing is the single most common cause of hot water complaints.

Yes. We've installed hot water units inside narrow cupboards, under stairs, on apartment balconies, and on roof areas where access is genuinely awkward. Continuous-flow units are wall-mounted and small, which solves a lot of this. If access really is the limiting factor we'll tell you on the quote and discuss whether a different fuel/location combination makes more sense.

Manufacturer warranties on hot water units are typically five to ten years on the tank/cylinder and one to three years on parts, depending on brand. We register your unit on install day so the warranty clock starts cleanly with paperwork that traces back to a licensed installer (some warranties are void if installation can't be evidenced). On top of the manufacturer warranty, our installation workmanship is guaranteed.