PVTHERM™
Harness the power of the sun to heat your water with PVTHERM™, the innovative solar geyser that taps into solar energy to give you hot water day after day.
- Converts sunlight directly into usable heat for water
- Smart electrical backup heats water on cloudy days
With PVTHERM™, you can slash your electricity bill while enjoying an endless supply of hot water. This solar-powered system draws energy from the sun to heat water, reducing your reliance on fossil fuels. Even when it’s cloudy, the system automatically switches to muncipal supply to keep the hot water flowing.
PVTHERM™ is perfect for eco-conscious homeowners who want to utilize clean, renewable energy. Reduce your carbon footprint and environmental impact with PVTHERM™ that harnesses the power of the sun. Save money on your utility bills while helping the planet by making the switch to PVTHERM™ today!
Compliance
Developers can achieve their SANS 10400-XA complaince requirements in a simple manner – and is maintenance free.
Easy installation
Quick and easy installation – no configuration or settings required – reducing installation time and costs
Only Electrical Certificate of Compliance
PVTHERM™ does not change the change the configuration of the geysers, so no plumbing CoC is required.
Design
PVTHERM™ is IP65 rated, compact, has no moving parts (low operating noise) and is virtually maintenance free and can be installed anywhere.
Function
With a built in MPPT, PVTHERM™ will follow the sun and always use solar first, with grid as backup. This switchover
is fully automated.

This is not an instllation diagram – only showing the basic components. Please refer to the manual or contact Moduls Solar.
- Easy installation by an electrician – no plumbing or specialized installation required.
- No need to alter your existing geyser.
- No moving parts like pumps that have a limited lifespan and can cause collateral damage if it bursts.
- No water pipes that can get clogged nor is it affected by water quality or interruption in supply.
- Effective passive cooling – system does not run hot and extends the lifetime of the system.
- No mechanical adjustments to be made by the user except for the changeover threshold
- Fully automatic between PV and grid switchover.
| Description | Specification |
|---|---|
| MPPT Efficiency | >99% |
| Overall Efficiency | >95% |
| Operating Temperature | -10°C to 60°C |
| Topology | Transformerless |
| Cooling Method | Natural convection via heatsink |
| Working Hours/Mode | Solar mode default, grid/mains as backup |
| Mains/Solar Interchange | Automatically |
| Power Requirement to Function | AC or DC or both present |
| Environmental Protection Rating | IP65 (IEC60529) |
| DC Input Power | 0.5kW to 1.5kW |
| AC Loads | 2kW to 4kW |
| MPPT Range (Vmp) | 100 to 300V |
| Maximum VOC | 350V |
| Self-Consumption | 15W |
| Output Voltage | 50V to 220V single phase PWM |
| Output Frequency | 50hz |
| Temperature Sensor | No |
| Communications | No |
| Weight | 5.4kg (incl. packaging) |
| Temperature setting | Via existing geyser, no need to replace. |
| Installation | Indoor, outdoor (under roof), in roof |
| Dimensions (Installed) | 320(h)(With the MC4 connectors which is 7cm )x150(w)x180(d) |
Fully maintenance free on the inverter – but we are here for you anytime.
- Standard 1 year, extended up to 5. (T’s & C’s apply)
- Important: If the product is not registered on the warranty portal, it will NOT be covered.
- Photovoltaic panels have a 25 year+ output guarantee (panel dependant).
