Wall-Mounted Solar Water Tank
Manufacturing & Supply

Wall-Mounted Solar Water Tank

Millionsun specializes in OEM and ODM manufacturing of wall-mounted solar water tanks for distributors, solar brands, system integrators, and installers worldwide.

A wall-mounted solar water tank is designed to be installed on vertical walls, saving valuable floor space. The tank can be used as a pre-heat tank for solar systems, a storage tank for heat pump systems, or as a standalone electric water heater.

Key Features & Performance

Wall-Mounted

Fits solid vertical walls, zero floorspace requirement; great for apartments & compact rooms.

Stainless-Steel Inner Tank

Food-grade SUS304/SUS316, anti-corrosion, hard-water tolerant, potable-water safe.

Compact Design

Small footprint with reliable hot-water storage for space-constrained homes.

50 mm PU Foam Insulation

Effective heat retention and low heat loss.

Electric Backup Heating

Built-in element with auto temperature control for low solar / heat-pump output.

0.7 MPa Pressurized System

Mains-pressure hot water for showers and faucets.

Fast Installation

Supplied with mounting bracket, standard fittings; installable within 2 hours by qualified technicians.

Standard Wall-Mounted Tank Specifications

Model FC/100L FC/150L FC/200L
Dimension (mm) Φ520 × 975 Φ520 × 1312 Φ520 × 1590
Tank Capacity (L) 105 155 210
Inner Tank SUS316L / 304 stainless steel, thickness 1.5 mm
Outer Tank Galvanized steel sheet with UV coating, thickness 0.5 mm
Insulation Polyurethane foam, thickness 50 mm
Tank Cap Engineering plastics
Connector G 3/4" Male thread
Working Pressure 0.7 MPa
Test Pressure 1.2 MPa
Electric Backup 1.5 kW or 2.4 kW (optional)
Safety Devices TP valve (temperature & pressure), Air valve
Heat Exchanger Optional internal copper coil (on request)
Warranty 5 years
Note: For wall-mounted installation, we recommend the 100 L and 150 L models for standard residential walls. The 200 L model requires confirmation of the wall's load-bearing capacity by a qualified installer before mounting.

What we offer?

OEM & ODM Manufacturing Support

Private Label Production

Space-Saving Wall-Mounted Design

Pressurized (0.7 MPa Working Pressure)

Electric Heating Element Options

Compact Size for Tight Spaces

Custom Project Solutions

Custom tank capacities, dimensions, connection positions, and electrical specifications available for OEM customers and project requirements.

Recommended Applications:

Apartments and condominiums

Small homes with limited floor space

Bathroom or kitchen installation

Pre-heat tank for solar thermal systems

Heat pump buffer tank

Business Value

Designed for Different Business Models
Your Business
How This Product Fits
Distributor
Add a space-saving tank option to your product range. High demand in urban apartments.
Solar Brand
Private label with your brand. Offer a complete system solution with wall-mounted tank.
System Integrator
Ideal for retrofit projects where floor space is limited. Easy to add to existing systems.
Installer
Quick installation, happy customers. No heavy lifting to upper floors.
Local Manufacturer

Source tanks for your own system assembly. Custom specs available.

Product Comparison

The wall-mounted tank is the right choice when floor space is limited but reliable hot water storage is still needed.
Floor-Standing Tank
Wall-Mounted Tank — Your Advantage
Space required
Floor area needed
Zero floor space — mounts on wall
Best for
Houses with utility rooms
Apartments, small homes, tight spaces
Installation location
Basement, ground floor
Any wall — bathroom, kitchen, balcony
Weight
Heavy (200kg+)
Lightweight — one-person installation
Capacity range
Up to 5000L
30L–200L — compact and focused

How the System Works?

As a Solar Pre-Heat Tank

Cold water enters the wall-mounted tank first. The tank is connected to solar collectors which pre-heat the water. Pre-heated water then flows to the main water heater (or the tank's own electric element brings it to the final temperature).

As a Heat Pump Storage Tank

The wall-mounted tank stores hot water produced by a heat pump. The tank's insulation keeps the water hot until needed. The electric element acts as backup for high-demand periods.

As an Electric Water Heater

The tank works as a standard electric water heater with thermostat-controlled heating. Compact size fits where a full-sized tank cannot.

Manufacturing & Supply Capabilities

Professional OEM & ODM Manufacturing
Millionsun has manufactured flat plate collectors since 2006, 2 ultrasonic welding lines and 1 laser welding line.

Integrated Manufacturing Resources

Flexible Supply Options

Frequently Asked Questions

We work systematically to integrate corporate responsibility in our core business and make our expertise available for the benefit of the societies where we operate.

Do you offer OEM service?

Yes. We make tanks for your brand. Tank size, connections, heating elements, and packaging — all customizable.

Standard capacities from 30L to 200L. Custom sizes available for OEM projects.

Yes. The tank works as a standard electric water heater with its own heating element.

Yes. Working pressure is 0.7 MPa (7 bar). Test pressure is 1.2 MPa (12 bar).

SUS304 or SUS316 stainless steel. You choose based on your water quality and budget.

A steel wall-mount bracket is included. The bracket fixes to the wall with anchor bolts, and the tank hangs securely on the bracket.

Product documents, installation guides, dimension drawings, and project support.

Request OEM Quotation

Receive customized pricing based on your branding, configuration, and volume requirements.
No order too small, no project too complex. 20 years of OEM experience — your brand, our expertise.
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