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Hot Water Systems — Caloundra & Sunshine Coast

Fast, reliable hot water system supply, installation and repair. Gas, electric and heat pump systems. Same-day replacement often available.

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No Hot Water? We Fix That.

A failed hot water system is never convenient. At Wattle Plumbing & Gas, we stock and install a range of quality hot water systems and can often arrange same-day or next-day replacement across Caloundra, Kawana Waters, Buderim, Maroochydore and surrounding areas.

We'll give you honest advice on whether repair or replacement is the better option — and if replacement is the right call, we'll help you choose the right system for your household size, energy source and budget.

System Types We Supply & Install

Heat Pump Hot Water Best Value Long-Term

Works like a reverse-cycle air conditioner — extracts heat from the air to heat your water. Very low running costs and ideal for Queensland's climate.

  • Brands: iStore, Thermann, Reclaim, Sanden, Rheem, Dux
  • Up to 75% more efficient than electric storage
  • Ideal if you have solar panels — can be timed to heat during the day
Featured — Best Solar-Compatible Option
Thermann Smart Heat Pump

The Thermann Smart is one of the most affordable heat pump options on the market — and the ideal choice if you have solar panels. Set it to heat during the day using your free solar energy and dramatically cut your running costs.

  • Affordable entry-level heat pump with smart controls
  • Pairs perfectly with solar PV — heat your water for free during peak solar hours
  • Wi-Fi app control — monitor and schedule from your phone
  • MEPS compliant
Jay recommends: If you have solar panels and want the cheapest long-term hot water running costs, the Thermann Smart heat pump is hard to beat.
Electric Storage Hot Water

Simple and cost-effective to install. Best for smaller households or where gas isn't available. Can be set to off-peak tariffs to reduce running costs.

  • Brands: Rheem, Rinnai, Dux, AquaMAX
  • 25L to 400L tank sizes available
  • Simple, reliable and easy to service
Gas Hot Water (Continuous Flow)

Endless hot water on demand — only heats when you need it. Compact wall-mounted unit, ideal for families on natural gas.

  • Brands: Rinnai, Rheem, Thermann, Bosch
  • No storage tank — compact wall-mounted unit
  • Suitable for natural gas connections only
Note: Gas hot water is not recommended for properties on bottled LPG — running costs are significantly higher. A heat pump or electric system is the better long-term choice.
Brands We Supply & Install
Thermann
iStore
Rheem
Rinnai
Dux
Sanden
Reece Our Preferred Supplier

We source all our materials and hot water systems through Reece Plumbing — Australia's leading trade plumbing supplier. We don't use cheap online suppliers or unknown brands. Every system we install comes from a trusted Australian supplier, backed by proper manufacturer warranties.

Signs Your Hot Water System Needs Attention

  • No hot water or inconsistent temperature
  • Rust-coloured or discoloured water
  • Unusual noises from the unit (banging, popping)
  • Leaking around the tank or connections
  • Pressure relief valve constantly releasing
  • Hot water system is 8–12+ years old

Get a Free Hot Water Quote

Reply typically within 1 day. Same-day appointments often available.

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Hot Water FAQs

Electric storage systems typically last 8–12 years. Gas continuous flow units can last 12–20 years with proper servicing. Heat pumps average 10–15 years. If your system is approaching or past these ages, it's worth getting it assessed even before it fails.
Often, yes. We carry common system sizes and types in stock or have next-day access to most models. Call us early in the day for the best chance of same-day replacement across Caloundra and the Sunshine Coast.
For most Queensland homes, yes. Heat pumps use up to 75% less electricity than a conventional electric storage system, and QLD government rebates may apply when replacing an old electric system. Jay can advise whether a heat pump suits your home and energy situation when you get your quote.
We work with all major Australian brands including Rheem, Rinnai, Dux, Bosch, Thermann, Everhot, and Sanden. Jay will recommend the best fit for your home and budget — not the option with the highest margin.
Rusty water often indicates a corroded sacrificial anode rod or a failing tank lining. A rotten egg smell can be a bacterial issue in your tank (common in systems set to a low temperature). Both are worth having checked promptly as they indicate the system is deteriorating.

From Our Blog

Gas vs Heat Pump vs Electric: Which Hot Water System Is Right for You? →

Ready for Reliable Hot Water?

Free quote typically within 1 business day. Same-day replacement often available across the Sunshine Coast.

Get a Free Quote Call 0407 990 987