Product Catalog | iW Solar - Custom Solar Water Heaters & Collectors

iW Solar Product Catalog

Custom solar water heaters and solar collectors, manufactured in our own factory in Shandong, China since 2013. OEM & ODM, MOQ from 1 set.

50L – 600L Exported to 30+ countries 3-year warranty Full inspection before shipment

Get a Quote WhatsApp Us

Thermosiphon · 80–230L

Non-Pressurized Solar Water Heaters (iW-S / iW-G / iW-T)

Automatic water feeding; thermosiphon circulation, no pump needed
55mm high-pressure polyurethane insulation, well wind resistance
SUS304-2B inner tank, silicon seals
iW-T version with assistant tank for automatic water supply
Easy installation on flat or pitched roof; electric backup heater

Model	SD-S-10 (SD-G-10)	SD-S-15	SD-S-18	SD-S-20	SD-S-24	SD-S-30
Tubes (pcs)	10	15	18	20	24	30
Tank net capacity (L)	80	120	140	155	185	230
Gross capacity (L)	105	155	185	205	245	305
Vacuum tube	Φ58 / 1800 mm, high borosilicate glass 3.3
Inner / outer tank	SUS304-2B (or SUS316L) / stainless or color steel
Mounting angle	45°, 2 or 3 feet frame, stainless / galvanized steel

Also available: iW-T with assistant tank (SD-T-10…30, same capacities) and iW-G galvanized-frame version. Full datasheet on request.

Request price for this series →

Non-pressurized solar water heater 80L-230L iW Solar

Copper Coil Heat Exchanger · 120–230L

Pre-Heated Solar Water Heater (iW-C)

Uses tap water pressure directly — strong, comfortable shower flow
Copper (or SUS304) coil heat exchanger, no scale deposit risk — ideal for hard water areas
Completely automatic operation, rapid heating
55mm polyurethane insulation, electric backup

Model	SP-C-15	SP-C-18	SP-C-20	SP-C-24	SP-C-30
Tubes (pcs)	15	18	20	24	30
Tank net capacity (L)	120	140	155	185	230
Coil material	Copper / SUS304, Φ12 or Φ20 mm
Heat transfer area (m²)	0.75/1.50	1.13/2.26	1.13/2.26	1.32/2.64	1.32/2.64
Vacuum tube	Φ58 / 1800 mm, high borosilicate glass 3.3

Request price for this series →

Pre-heated copper coil solar water heater iW-C iW Solar

Pressurized · 130–240L

Pressurized Double Inner Tank Water Heater (iW-P)

Double inner tanks: non-pressurized heating tank + pressurized supply tank (0.6 MPa)
Directly connected to city water — no circulation pump required
Big water flow, rapid heating, completely automatic
SUS304 pressurized inner tank, color steel outer tank

Model	SD-P-15	SD-P-20	SD-P-25	SD-P-30
Tubes (pcs)	15	20	25	30
Pressurized tank net (L)	130	165	205	240
Gross capacity (L)	165	215	265	315
Working pressure	0.6 MPa
Vacuum tube	Φ58 / 1800 mm, high borosilicate glass 3.3
Tank materials	Inner SUS304 · middle SUS304 · outer color steel

Request price for this series →

Pressurized double inner tank solar water heater iW-P iW Solar

150–500L · Three systems

Flat Plate Solar Water Heaters (iW-FT / iW-F / SS-F)

iW-FT (non-pressurized): 150/200/300L, thermosiphon, elegant appearance
iW-F (pressurized, 0.6 MPa): 150/200/300L, comfortable pressure shower, SUS304-2B inner tank
SS-F (split pressurized): 150–500L tank placed separately, collector on roof — ideal for building integration
SUS304 inner tanks; polyurethane insulation; electric backup with anti-dry-heating protection
1 or 2 flat plate collectors (2000×1000×80 mm), black chrome / blue film coating

Model	SS-F-150	SS-F-200	SS-F-250	SS-F-300	SS-F-400	SS-F-500
Tank volume (L)	150	200	250	300	450	500
Collector panels (pcs)	1	1	2	2	2	3
Work station	SR961S · expansion tank 12–24L · 0.6 MPa
Recommended flow	1.0–2.0	1.2–2.5	1.5–3.0	3.0–5.0	4.0–7.0	5.0–8.0 (L/min)

iW-FT / iW-F spec sheets (SN-FT & SP-F 150/200/300 models) available on request.

Request price for this series →

Integrative flat plate solar water heater iW-FT iW Solar

Four series · 620–2098 W

Heat Pipe Solar Collectors (iW-HP / iW-H24 / HD / HM)

No water in the vacuum tube — system still works if a tube breaks
Red copper heat pipe, one-way transfer, works down to -35°C — ideal for frost regions
Aluminum alloy manifold & bracket, corrosion resistant, flat or sloping roof
Copper manifold, test pressure 1 MPa; polyurethane / rock wool insulation
iW-H24: 24×70 mm condenser — larger exchange area, higher output (up to 2098 W)
iW-HM: Φ70/2000 mm super conductor tube for higher demand

Model	SC-H-10	SC-H-15	SC-H-18	SC-H-20	SC-H-24	SC-H-30
Tubes (pcs)	10	15	18	20	24	30
Aperture area (m²)	1	1.5	1.8	2	2.4	3
Gross area (m²)	1.56	2.3	2.74	3.04	3.63	4.51
Power @1000W/m² (W)	620	870	1047	1165	1401	1748
Heat pipe	Φ14 / 1700 mm red copper (H24 series: Φ24 condenser)
Vacuum tube	Φ58 / 1800 mm, high borosilicate glass 3.3
Rated pressure	0.6 MPa

H24 series output: 744–2098 W. HD and HM series datasheets on request.

Request price for this series →

Heat pipe solar collector iW-HP SC-H24 iW Solar

Installation angle 0°–90°

U-Pipe Solar Collector (iW-U)

Most efficient transfer: U-pipe with aluminum fin, no water in the tube
Flexible installation: 0°–90° angle — roof or wall-hung mounting
Rock wool insulation, copper manifold tested at 1 MPa

Model	SC-U-15	SC-U-18	SC-U-20
Tubes (pcs)	15	18	20
Aperture area (m²)	1.5	1.8	2
Gross area (m²)	2.3	2.74	3.04
Power @1000W/m² (W)	870	1047	1165
Vacuum tube	Φ58 / 1800 mm

Request price for this series →

U-pipe solar collector iW-U, pressurized vacuum tube collector

Commercial · 15–60 tubes

Non-Pressurized Solar Collector (SC-V)

Large collecting area (up to 5.8 m²), natural circulation — easy assembly
Designed for commercial buildings: schools, dormitories, hotels, bath centers
Also used for large swimming pool heating and industrial hot water

Model	SC-V-15	SC-V-20	SC-V-25	SC-V-30	SC-V-50	SC-V-60
Tubes (pcs)	15	20	25	30	50	60
Collecting area (m²)	1.4	1.9	2.4	2.9	4.8	5.8
Gross area (m²)	2.36	3.12	3.86	4.62	7.72	8.24
Net weight (kg)	45.75	50.75	59.75	64.75	120.5	129.5
Inner tank	SUS304 · polyurethane insulation 40 mm

Request price for this series →

Non-pressurized vacuum tube solar collector SC-V iW Solar

2000×1000×80 mm · 6 absorber options

Flat Plate Solar Collector (iW-F)

High-selective black chrome / blue film (Chinese or German) coatings, ultrasonic or laser welding
Tempered textured glass, transmittance up to 92%; copper Tp2 risers
Tested: mechanical load, freeze resistance, rain penetration, hail impact, thermal shock
25-year service life, max working pressure 0.8 MPa, operation up to 200°C
6063 aluminum alloy frame, glass wool insulation, EPDM seals

Model	SC-F-C/A	SC-F-C/A1	SC-F-C/BC	SC-F-C/BC1	SC-F-C/VC	SC-F-C/VC1
Absorber	Aluminum, ultrasonic	Copper, ultrasonic	Aluminum, laser	Aluminum, laser	Aluminum, laser	Aluminum, laser
Coating	Anodic oxidation	Anodic oxidation	Black chrome	Black chrome	Chinese blue film	German blue film
Dimension (mm)	2000 × 1000 × 80
Gross area / weight	2.00 m² · 36–38 kg

Request price for this series →

Flat plate solar collector iW-F, 2000x1000x80mm blue titanium absorber

For frost & hard-water regions

Split Pressurized System (SS-M)

Collector on roof, tank indoors — clean building integration
Closed circuit with antifreeze fluid + copper coil heat exchanger — solves freezing and poor-water-quality problems
Electric or gas supplementary energy; intelligent control, anti dry-heating

Model	SS-M-15	SS-M-20	SS-M-25	SS-M-30	SS-M-40	SS-M-50
Tank capacity (L)	150	200	250	300	400	500
Collector model	SC-H-15	SC-H-20	SC-H-25	SC-H-30	SC-H-20	SC-H-25
Collector qty	1	1	1	1	2	2
Work station / tank	SR961S · expansion tank 12 / 18 / 24 L · 0.6 MPa

Request price for this series →

Split pressurized solar water heater system with vacuum tube collectors iW Solar

Engineered to order

Engineering Projects & Solar Systems

Beyond the standard range above, we design and supply complete engineered systems:

Swimming pool solar heating systems — centralized heating and heat accumulation for large pools
Central solar hot water systems for hotels, schools, dormitories and residential compounds — collector arrays on the roof, separated heat storage
Photovoltaic (PV) systems — DC power generation solutions for commercial use

Tell us your daily hot water demand, location and roof situation — our engineers will propose a system and quote.

Discuss your project →

iW Solar Product Catalog

Non-Pressurized Solar Water Heaters (iW-S / iW-G / iW-T)

Pre-Heated Solar Water Heater (iW-C)

Pressurized Double Inner Tank Water Heater (iW-P)

Flat Plate Solar Water Heaters (iW-FT / iW-F / SS-F)

Heat Pipe Solar Collectors (iW-HP / iW-H24 / HD / HM)

U-Pipe Solar Collector (iW-U)

Non-Pressurized Solar Collector (SC-V)

Flat Plate Solar Collector (iW-F)

Split Pressurized System (SS-M)

Engineering Projects & Solar Systems

“Your Budget, Our Priority”

Products

Company & Service

Terms & Support

Contact Info