iHeat Solar Hot Water Systems
SunCity Hot Water supplies, installs and services iHeat solar hot water systems across the Sunshine Coast, Brisbane, Bribie Island and Gympie — Slimline roof-mounted thermosiphon and ground-mounted split solar, drawing up to 80% of your hot water from the sun. Call 1300 728 122.
- Up to 80% free solar energy
- Pump-free thermosiphon design
- Frost protection available
- 5-year tank & collector warranty
Free Hot Water from the Queensland Sun
Hot water is one of the biggest energy users in the home — iHeat solar puts the sun to work and cuts those running costs.
iHeat's Slimline range is a traditional close-coupled thermosiphon system: the low-profile tank and the double-insulated solar collectors sit together on the roof, and water circulates naturally as it heats — no electric pump to run or service. It's a simple, efficient way to draw up to 80% of your hot water straight from the sun.
You can choose an open-loop system for direct, maximum-efficiency heating in a warm climate, or a closed-loop system with a heat exchanger and frost protection for cooler areas and poor water quality. Where a roof tank isn't practical, the ground-mount split option keeps the collectors on the roof and puts the tank at ground level. Every system pairs with electric or gas boosting so you always have hot water.
iHeat Solar Hot Water Systems We Supply
Roof-mounted or ground-mounted, with electric or gas boosting — we'll match the right system to your home.
Most populariHeat Slimline
Roof-Mounted Thermosiphon
A close-coupled thermosiphon system with the low-profile Slimline tank and collectors both on the roof — simple, pump-free and efficient.
iHeat Ground Mount Split Solar
Split-System (Ground-Mounted)
Solar collectors on the roof with the storage tank at ground level — ideal where a roof tank isn't suitable, and easy to access for servicing.
iHeat Open Loop (Direct)
The open-loop range is perfectly matched to warmer climates like South-East Queensland. Water is heated directly as it passes through the collector, so the transfer is as efficient as it gets — and the double-insulated, all-copper collector has the output to handle even the largest hot water demand.
- Direct collector-to-tank heating
- Best efficiency in warm climates
- All-copper, double-insulated collector
- 200L or 300L Slimline tank
iHeat Closed Loop (Indirect)
The closed-loop range is iHeat's toughest system. A heat exchanger, overheating protection device and super-efficient heat-transfer fluid keep solar contribution high in the coldest conditions, and its versatile design handles poor water quality, remote locations and off-grid setups.
- Heat exchanger + heat-transfer fluid
- Built-in frost protection
- Suits cold areas & poor water quality
- No electric pump — ideal off-grid
Efficient Solar, Built to Last
What makes iHeat a smart solar hot water choice for South-East Queensland homes.
Up to 80% Free Solar Energy
iHeat solar collectors can provide up to 80% of your household's hot water straight from the Queensland sun, cutting your running costs.
Double-Insulated Copper Collectors
An all-copper, double-insulated collector transfers heat efficiently and holds it, so you get strong output even on cooler days.
Low-Profile Slimline Tank
The close-coupled Slimline tank sits neatly on the roof for a tidy, understated look that suits most homes.
No Pump Needed
Roof-mounted thermosiphon systems move water naturally as it heats — no electric pump to power or maintain.
Frost Protection Available
The closed-loop range adds an overheating protection device and heat-transfer fluid for reliable output in cold snaps.
Electric or Gas Boosting
Back up your solar with an electric element or a 6-star natural gas or LPG booster for hot water day and night.
WaterMark & RCM Certified
iHeat systems carry WaterMark approval to Australian Standards and the Regulatory Compliance Mark, built under ISO 9001.
5-Year Tank & Collector Warranty
iHeat backs its tanks and collectors for 5 years, parts and labour — on top of our own workmanship guarantee.
Solar Heat, No Pump Required
The thermosiphon effect moves your water naturally as it heats — with a booster for cloudy days.
The sun heats the collector
Sunlight warms the water (or heat-transfer fluid) inside the roof-mounted solar collector throughout the day.
Hot water rises to the tank
As the water heats it naturally rises into the storage tank sitting above the collector — the thermosiphon effect, with no pump required.
Cooler water cycles back
Cooler water sinks from the bottom of the tank back into the collector to be heated, and the cycle repeats while the sun is up.
Booster tops up when needed
An electric element or gas booster tops up the temperature through cloudy runs or heavy use, so you never run out of hot water.
Choose the Right Size
iHeat Slimline systems in 200L and 300L, with electric or gas boosting to suit your household.
| Specification | 200L | 300L |
|---|---|---|
| System length (tank & collector) | 2505 mm | 2505 mm |
| Tank width | 1540 mm | 2190 mm |
| Tank diameter | 555 mm | 555 mm |
| Tank weight | 75 kg | 100 kg |
| Boosting | Electric or gas | Electric or gas |
| Tank & collector warranty | 5 yr | 5 yr |
Specifications from the iHeat Slimline brochure. A 6-star gas booster (20L or 26L, natural gas or LPG) is available. Data may change without notice — we'll confirm the right system for your home.
iHeat Slimline Solar Brochure
Features, sizing guide & technical specifications (PDF).
Backed by warranty
5 Years on Tanks & Collectors
iHeat backs its tanks and collectors for 5 years, parts and labour, with up to 10 years on the gas booster heat exchanger — and every installation is backed by our own quality workmanship guarantee.
Tank
Collectors
Comparing options? See all solar hot water systems, or browse the hot water brands we supply.
Australia's Leading Hot Water Brands
We supply, install & service all major brands.
OMNI X Hot Water Systems
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Thermastore
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Stiebel Eltron Water Heater
Dux Hot Water SystemsWe Offer a Wide Range of Hot Water Systems
SunCity Hot Water supplies and installs all types of hot water systems, including electric hot water systems, gas hot water systems, solar hot water systems and heat pump hot water systems. Call 1300 728 122 for same-day service.
Our local technicians are part of the SunCity Brisbane hot water systems and Sunshine Coast hot water systems service network — available for same-day hot water system repairs and replacement across South East Queensland. Call 1300 728 122 for same-day service.
FAQs
iHeat Solar Hot Water — Frequently Asked Questions
What is an iHeat solar hot water system?
An iHeat solar hot water system uses roof-mounted solar collectors to heat your water with free energy from the sun. The Slimline range is a close-coupled thermosiphon system — the tank sits on the roof above the collectors and water circulates naturally with no pump. A ground-mounted split option is also available, and an electric or gas booster tops the water up when the sun can't keep up.
What's the difference between open loop and closed loop?
Open loop (direct) systems heat your tank water straight through the collector — the most efficient choice in warmer climates like South-East Queensland. Closed loop (indirect) systems use a heat exchanger, an overheating protection device and a heat-transfer fluid, adding frost protection and suiting cold areas, poor water quality or remote off-grid installs. We'll recommend the right one for your home.
What sizes does iHeat come in?
The Slimline range comes in a 200L tank (1540mm wide, around 75kg) and a 300L tank (2190mm wide, around 100kg), both with a 2505mm system length. We'll size the right tank and collector setup for your household.
Is iHeat roof-mounted or ground-mounted?
Both. The Slimline range is roof-mounted, with the tank and collectors together on the roof for a pump-free thermosiphon system. The ground-mount split option keeps the collectors on the roof but places the tank at ground level — handy where a roof tank isn't suitable or you want easier access for servicing.
What boosting options are available?
iHeat solar can be boosted by electricity or gas. The gas option uses a 6-star energy-efficient continuous-flow booster (20L or 26L) that runs on natural gas or LPG, while the electric option uses an in-tank element. The booster only fires when solar contribution is low, so running costs stay down.
Can you repair my iHeat solar hot water system?
What warranty does iHeat have?
iHeat backs its tanks and collectors for 5 years (parts and labour), with 1 year on electrical parts and up to 10 years on the gas booster heat exchanger. Every installation is also backed by our own workmanship guarantee.
Do you install and service iHeat across the Sunshine Coast and Brisbane?
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