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Space-Saving Instant-Heating Tankless Heater

tankless solar water heater with 137mm diameter solar vacuum tubes, instant hot water heating, without water tank, easy installation
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  • RNE-TS-50

  • Solaraven

  • 8419120000


Product Overview


The tankless solar water heater from Solaraven (Model: RNE-TS-50) is a revolutionary solution designed to meet the demands of modern high-rise buildings and customized whole-house designs. Unlike traditional solar water heaters that rely on bulky separate tanks, this innovative system integrates heat storage and absorption into a single unit—its 137mm diameter solar vacuum tubes not only collect solar energy but also serve as built-in heat storage devices. By eliminating the need for an external or indoor water tank, it solves the aesthetic and space issues that make many real estate developers reject conventional models. This building-integrated design aligns perfectly with architectural quality and style, while enhancing green building ratings, making it a top choice for both residential and commercial projects.


137mm Vacuum Tube Tankless Solar Heater


Key Features


137mm High-Efficiency Solar Vacuum Tubes

Equipped with Φ137mm solar vacuum tubes, the system offers higher heating efficiency compared to flat panel collectors. Each tube houses a pressurized food-grade 304 stainless steel inner tank, ensuring dual functionality of heat collection and storage.


Leak-Proof & Anti-Freeze Performance

The integrated 304 stainless steel cylinder inside each vacuum tube eliminates leakage risks, while the pressurized design enhances stability and anti-freeze capabilities, suitable for various climate conditions.

Designed for seamless embedding into buildings, the tankless structure avoids the "boil-like" external tanks or "tumor-like" indoor tanks of traditional models, preserving architectural beauty.


Flexible Installation Options

Supports vertical or horizontal installation on the ground, rooftop, terrace, or wall, adapting to diverse spatial constraints of high-rises, villas, and commercial buildings.

The integrated heat storage and absorption design enables rapid heating, providing instant hot water without waiting, meeting the needs of whole-house hot water usage.


Technical Specifications


Vacuum Tube Details

Collector Parameters

Capacity & Weight

Installation & Dimensions

Length: 1860mm / 850mm

Quantity: 3-9 tubes

Capacity: 43L-95L

Installation Method: Vertical / Horizontal

Diameter: Φ137mm

Size (L×W×H): 1120×175×1020mm to 2020×175×1150mm

Collector Weight: 58kg-120kg

Inner Size: Φ108×800mm / Φ108×1820mm

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Operating Weight: 101kg-215kg

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Brand: Solaraven

Model: RNE-TS-50

Code: 8419120000

Material: Aluminum alloy outer casing + 304 stainless steel inner tank


Tankless solar water heater

Vacuum tube

Diameter
(mm)

Collector
Size L*W*H
(mm)

Collector
Weight(kg)

Capacity
(L)

Operating
Weight(kg)

Installation
Method

Inner
Size(mm)

Length(mm)

Quantity

1860

3

Φ137

2020*175*590

60

50

110

Vertical

Φ108*1820

3

Φ137

2020*175*625

60

50

110

Horizontal

Φ108*1820

4

Φ137

2020*175*765

80

65

145

Vertical

Φ108*1820

4

Φ137

2020*175*800

80

65

145

Horizontal

Φ108*1820

5

Φ137

2020*175*940

100

80

180

Vertical

Φ108*1820

5

Φ137

2020*175*975

100

80

180

Horizontal

Φ108*1820

6

Φ137

2020*175*1115

120

95

215

Vertical

Φ108*1820

6

Φ137

2020*175*1150

120

95

215

Horizontal

Φ108*1820

850

6

Φ137

1120*175*1020

58

43

101

Vertical

Φ108*800

7

Φ137

1295*175*1020

68

50

118

Φ108*800

8

Φ137

1470*175*1020

77

58

135

Φ108*800

9

Φ137

1645*175*1020

87

65

152

Φ108*800


Applicable Scenarios


High-Rise Residential Buildings

Ideal for high-rises where external tanks ruin building appearance and indoor space is limited. Its compact, embedded design complies with property management requirements.


Customized Whole-House Projects

Perfectly matches personalized home designs, providing on-demand hot water for bathrooms, kitchens, and other areas without occupying living space.

Suitable for hotels, shopping malls, and office buildings, contributing to green building certifications and reducing energy costs with efficient solar utilization.


Real Estate Development Projects

Widely favored by developers for enhancing project competitiveness. Improves green ratings and avoids aesthetic conflicts with building facades.


Product Advantages


Space-Saving & Aesthetic

No separate water tank saves indoor and outdoor space; building-integrated design maintains architectural integrity, a key advantage over traditional tank models.

Safe & Durable

Food-grade 304 stainless steel inner tanks resist corrosion and leakage; pressurized structure ensures anti-freeze performance, extending service life.

Energy-Efficient & Cost-Effective

Solar vacuum tubes deliver higher heating efficiency than flat panels, maximizing solar energy conversion and reducing reliance on electric or gas heating.

Easy & Versatile Installation

Multiple installation methods (vertical/horizontal, ground/wall-mounted) adapt to different project needs, simplifying construction and reducing installation costs.

Policy-Aligned

Meets green building standards, helping projects qualify for environmental certifications and subsidies.


Call to Action


Ready to upgrade your hot water system with a space-saving, energy-efficient, and building-friendly solution? Inquire now for detailed quotes or add the Solaraven RNE-TS-50 tankless solar water heater to your basket! Whether you’re a real estate developer, homeowner, or project contractor, our team provides tailored technical support and installation guidance. Embrace green energy and enhance architectural value—contact us today to start your sustainable hot water journey!


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