150L Retrofit Evacuated Tube Solar Geyser

Upgrade your existing 150L geyser with this 150L evacuated tube solar geyser conversion system and start saving on electricity without replacing the cylinder. This evacuated tube solar geyser conversion uses a high-efficiency 15-tube collector and a 12V circulation pump to transfer solar heat into your existing geyser during the day, while your electric element remains available as backup.

Because it’s a retrofit evacuated tube solar geyser system, your current geyser stays in place. The solar collector is mounted outside on the roof, where the tubes absorb UV light even on cloudy days. Heated water is circulated through a heat exchanger loop, charging your 150L geyser with free solar energy and reducing the geyser’s running time on grid power.

The 150L size is ideal for a typical family of 3–4 people, giving enough hot water for daily showers, dishes and general household use. The evacuated tube solar geyser conversion design offers excellent performance in cold and windy conditions, with tubes that are hail- and frost-resistant and individually replaceable if damaged.

Routine maintenance is minimal – mainly checking valves and replacing the sacrificial anode at recommended intervals, depending on water quality. With correct installation and basic care, this retrofit evacuated tube solar geyser solution offers long service life, lower electricity bills and reliable hot water even during load-shedding.

What’s Included

• 15-tube evacuated glass solar collector for 150L systems

• Roof mounting frame and brackets

• 12V solar circulation pump and controller

• Piping and fittings for the solar loop (installer to finalise on site)

• Valves and safety components as per SANS requirements

• System sensor(s) and basic wiring harness

• Installation manual and warranty documentation

Key Benefits

• Use your existing 150L geyser – no need to replace the cylinder

• High-efficiency evacuated tube solar geyser conversion with excellent performance in cold and cloudy weather

• Retrofit evacuated tube solar geyser system with 15 tubes sized for a 150L household geyser

• Electric element and timer remain as backup for rainy weeks or very high demand

• Hail- and freeze-resistant evacuated tubes – only damaged tubes need replacing

• Outdoor collector means minimal water damage risk inside ceilings

• 5-year system warranty (T’s & C’s apply)

Specifications

Capacity: 150 litres (conversion for existing 150L geyser)
System Type: Split retrofit evacuated tube solar geyser system
Main Keywords: Evacuated tube solar geyser conversion; Retrofit evacuated tube solar geyser
Collector Type: 15-tube evacuated glass solar collector
Application: Existing high-pressure household electric geyser
Typical Household Size: 3–4 people
Circulation: 12V DC solar pump with controller
Backup Heating: Existing electric element and timer retained
Mounting: Roof-mount frame suitable for common roof types (IBR, tile, some flat roofs – installer to confirm)
Certification: SABS-approved components
Warranty: 5-year system warranty (T’s & C’s apply)
Maintenance: Periodic anode replacement and basic system checks, frequency dependent on water quality