Solar Hot Water
Australia's most complete hot water range. Backed like no other.
Solar, heat pump, gas — whatever your water heating needs, Envirosun has a system for it. Every product is Australian-designed for Australian conditions, backed by industry-leading 10-year transferable warranties* and engineered to ensure serious long-term savings. One range. One local team. No runaround.
Solar hot water
Proven Australian solar technology harnessing the sun to heat your water, reducing running costs year-round. Two configurations — roof-mounted thermosiphon or ground-level split system.
TS Plus Solar 300L
Roof-mounted · Over 80% solar contribution · 300L · 5–6 people
The proven Envirosun thermosiphon delivers over 80% of hot water from the sun. Tank and collectors mount directly on the roof — no pump, no moving parts. R-coated evacuated tubes maximise heat collection year-round, even in overcast conditions.
Key Features
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Over 80% solar contribution
Dramatically reduces running costs year-round
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Roof-mounted thermosiphon
No pump — gravity-fed, zero moving parts
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Evacuated tube collectors
Performs in low-light and overcast conditions
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Electric boost element
Ensures hot water even on low-solar days
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Corrosion-resistant tank
Stainless steel inner tank, 10-yr warranty
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Solar-ready controls
Smart timer for off-peak or solar boosting
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Australian-designed
Built for Australian conditions and climate zones
At-a-Glance
| TS300 | |
|---|---|
| Capacity | 300L |
| Suits | 5–6 people |
| Install type | Roof-mounted |
| Solar contribution | Over 80% |
| Collector type | Evacuated tube |
Solar contribution comparison
Solar contribution varies by climate zone. Values shown for Zone 3 (Sydney / Brisbane).
AS Split Solar
Ground tank · Roof panels · Up to 87% solar contribution · 3–6 people
Split-system solar with the storage tank at ground level and collectors on the roof — ideal for homes where a roof-mounted tank isn't structurally practical. Available in 320L and 420L to suit 3–6 person households.
Key Features
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Up to 87% solar contribution
Maximum solar harvest with optimised positioning
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Flexible installation
Tank at ground level, panels on roof
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Multiple tank sizes
320L and 420L options
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Frost protection
Freeze-valve protection for cold climates
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Electric boost element
Reliable hot water on low-solar days
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Corrosion-resistant tank
Stainless steel inner, 10-yr warranty
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Low-profile roof footprint
Collectors only on roof — structurally lighter
At-a-Glance
| AS320 / AS420 | |
|---|---|
| Capacity | 320L · 420L |
| Suits | 3–6 people |
| Install type | Ground tank / roof panels |
| Solar contribution | Up to 87% |
| Collector type | Evacuated tube |
Solar contribution comparison
Solar contribution varies by climate zone. Values shown for Zone 3 (Sydney / Brisbane).
| Specification | TS300 | AS320 | AS420 |
|---|---|---|---|
| Tank capacity | 300L | 320L | 420L |
| Suits | 5–6 people | 3–5 people | 5–6 people |
| Installation type | Roof-mounted | Ground tank / roof panels | Ground tank / roof panels |
| Collector type | Evacuated tube | Evacuated tube | Evacuated tube |
| Solar contribution (Zone 3) | Over 80% | Up to 85% | Up to 87% |
| Boost element | Electric | Electric | Electric |
| Rated voltage / frequency | 220–240V/50Hz | 220–240V/50Hz | 220–240V/50Hz |
| Boost element power | 2400W | 2400W | 2400W |
| Tank max pressure | 700kPa | 700kPa | 700kPa |
| Inner tank material | Stainless steel | Stainless steel | Stainless steel |
| Tank warranty | 10 years | 10 years | 10 years |
| Collector warranty | 5 years | 5 years | 5 years |
| Collector specifications | |||
| Number of tubes | 30 | 20 | 26 |
| Tube diameter | 58mm | 58mm | 58mm |
| Selective coating | R-coated | R-coated | R-coated |
| Frost protection | Standard | Freeze-valve | Freeze-valve |
| Dimensions & weight | |||
| Tank dimensions | 580×1970mm | 550×1700mm | 550×2050mm |
| Net / Gross weight (tank) | 55/65kg | 48/58kg | 60/72kg |
Right here for Aussie plumbers.
Just good, local expertise on tap. No offshore call centres. No runaround.