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TS Range
Solar · Thermosiphon

TS Range

Thermosiphon · Roof-mounted · No pump required · Electric or gas boosted · 167L–304L storage

No pump required for solar operation. Booster systems may require electricity or gas. Available in 167L (single collector, ideal for small homes) and 304L configurations, with open-circuit (TS) and closed-circuit freeze-protected (THX) options. All models feature premium 444 Grade Ferritic Stainless Steel tanks, high-performance flat plate collectors, and electric or gas boost, backed by a 10-year warranty.

Key Features

  • Available in 167L & 304L

    The compact TS170 is designed for small homes; the TS300 suits medium-to-large households.

  • No power required

    Thermosiphon flow is driven by the natural density difference — no pump or external power needed.

  • Roof-mounted integrated design

    Tank and collectors mount as a single unit on the roof, maximising solar efficiency and simplifying installation.

  • 444 Grade Stainless Steel tank

    European-sourced ferritic stainless steel tanks offer exceptional corrosion resistance for Australian conditions.

  • Peak performance collectors

    High-performance selective surface absorber panels, laser-welded to copper risers and headers, with weather-resistant aluminium trays, thermal insulation, and tempered solar glass.

  • THX freeze protection

    The THX300 closed-circuit variant uses a separate jacket chamber for freeze-free operation — suitable for frost-prone areas and poor water quality regions.

  • Advanced safety & control systems

    Technologically advanced safety and control systems with a closed circuit design for maximum solar collector protection. Supplied with PRV, PTR and ECV valves to comply with AS/NZS 3500.

  • Compliant & STC eligible

    Fully accredited by the Clean Energy Regulator. Listed on the CER Register and eligible for STCs.

At-a-Glance

TS170 · TS300 · THX300
Models TS170 · TS300 · THX300
Storage range 167L – 304L
Collector type Flat plate
Boost options Electric or gas
Freeze option THX300 (closed-circuit)

STC COMPARISON

Envirosun TS Plus TS3000/50 receives 40 STC 90%
Rinnai Prestige 300L receives 39 STC 87%
Sun Rain 300L 2P receives 35 STC 79%
Solahart 302J solar hot water system receives 28 STC 65%
Rheem 300L Hiline receives 28 STC 65%
*Small Technology Certificates (STC) are based on the 10-year Clean Energy Regulator data and reduce by 10% at the end of every year. 2024 STCs are 30% lower than above table. STC values are correct at the time of publication but will change each year due to Legislation on the 1st January.
All Envirosun® TS Range systems are fully accredited by the Australian Government Clean Energy Regulator and listed on the CER Register. Purchasing an eligible system may entitle you to Small-scale Technology Certificates (STCs) — renewable energy credits that reduce the upfront cost of your system based on your installation date and geographic location.

*Only THX (closed circuit) models are suitable and warranted for frost-prone areas.
Envirosun Electric Boosted Range
Specification TS300 TS300 TS170 THX300
SYSTEM
Model TS300/40Se TS300/60Se TS170/40Se THX300/40Se
CER code TS300/40/O/E24/S2/E20HS TS300/60/O/E24/S2/E20HS TS170/20/O/E24/S2/E20HS TS300/40/C/E24/S2/E20HS
Storage capacity 304L 304L 167L 304L
Mass empty 129kg 144kg 76kg 135kg
Mass full 437kg 453kg 251kg 454kg
Footprint 2,238 x 2,600mm 3,260 x 2,600mm 1,400 x 2,600mm 2,238 x 2,600mm
Boost capacity 140L 140L 140L 140L
TANK
Model TS300/O/E24/S2 TS300/O/E24/S2 TS170/O/E24/S2 TS300/C/E24/S2
Mass empty 59kg 59kg 38kg 77kg
Mass full 363kg 363kg 206kg 393kg
Footprint 650 x 2,150mm 650 x 2,150mm 650 x 1,264mm 650 x 2,150mm
Height 600mm 600mm 600mm 600mm
COLLECTORS
Model E20HS E20HS E20HS (E20HA optional) E20HS
Quantity 2 3 1 2
Mass empty (each) 27.5kg 27.5kg 27.5kg 27.5kg
Mass full (each) 29.2kg 29.2kg 29.2kg 29.2kg
Footprint (each) 1,235 x 2,000mm 1,235 x 2,000mm 1,060 x 2,000mm 1,235 x 2,000mm
Height 70mm 70mm 70mm 70mm
ELECTRIC BOOSTER
Rating 2.4kW 2.4kW 2.4kW 2.4kW
Envirosun Gas Boosted Range
Specification TS300 TS300 TS170 THX300
SYSTEM
Model TS300/40Sg TS300/60Sg TS170/40Sg THX300/40Sg
CER code TS300/40/O/GR26/S2/E20HS TS300/60/O/GR26/S2/E20HS — TS300/40/C/GR26/S2/E20HS
Storage capacity 304L 304L — 304L
Mass empty 149kg 164kg — 155kg
Mass full 458kg 474kg — 474kg
Footprint 2,238 x 2,600mm 3,260 x 2,600mm — 2,238 x 2,600mm
Boost rate (max) 26L/min 26L/min — 26L/min
TANK
Model TS300/O/E24/S2 TS300/O/E24/S2 — TS300/C/E24/S2
Mass empty 59kg 59kg — 77kg
Mass full 363kg 363kg — 393kg
Footprint 650 x 2,150mm 650 x 2,150mm — 650 x 2,150mm
Height 600mm 600mm — 600mm
COLLECTORS
Model E25HS E25HS — E20HS
Quantity 2 3 — 2
Mass empty (each) 27.5kg 27.5kg — 27.5kg
Mass full (each) 29.2kg 29.2kg — 29.2kg
Footprint (each) 1,235 x 2,000mm 1,235 x 2,000mm — 1,235 x 2,000mm
Height 70mm 70mm — 70mm
GAS BOOSTER
Gas consumption 188MJ/hr 188MJ/hr — 188MJ/hr
Heat output 42kW 42kW — 42kW