Convert Your Existing Geyser to Solar With Geyserwise

Yes, a suitable existing electric geyser can be converted after inspection of the tank and checks that the element, controls and solar equipment are compatible. Suitability is assessed for your property rather than assumed.

The intention is to keep your existing tank. A leaking, damaged or unsuitable geyser may need repair or replacement first; that work and its cost must be confirmed separately in your quotation.

Geyserwise lists PV water-heating systems for 100L, 150L and 200L capacities. We assess each tank’s condition, component compatibility, household demand and solar conditions before selecting an installation configuration.

No. This conversion uses photovoltaic panels to generate electricity for a heating element in your existing tank. Solar thermal systems instead use tubes or collectors to transfer heat through water or another fluid. With this PV approach, your suitable existing tank stays in place.

No. A timer or temperature controller alone does not generate solar electricity or convert the heating arrangement. Dedicated compatible solar generation, MPPT and heating equipment are also required for a PV conversion.

Dedicated roof-mounted photovoltaic panels generate DC electricity. A compatible MPPT manages that solar output for a compatible AC/DC PTC heating element inside the existing geyser. Temperature controls manage heating, and a compatible AC arrangement provides supplementary electricity heating.

A conversion typically uses PV panels, a compatible MPPT, an AC/DC PTC heating element, temperature controls, mounting, cabling and electrical protection. Your written quotation sets out the selected models, quantities, installation work, exclusions and applicable compliance documentation.

We size your solar panels to suit your geyser, roof conditions and hot-water needs. Panel voltage, current and output must match the chosen MPPT and heating element. Tank capacity, roof orientation, shading and local sunlight all influence the selection.

Dedicated solar-to-element heating does not require a household inverter or battery in the heating path. Some temperature controllers still need mains electricity: the TSE1 and TSE1 with Tuya use 230V AC. We explain how your selected controls are powered and whether heating can continue during a power outage.

Existing panels cannot simply be shared or connected to a geyser conversion. Their existing connections, voltage and current limits, controller compatibility and protection need an appropriate electrical design. We assess your current installation before advising whether any integration is suitable.

No, not necessarily. Suitable cable routing and a compatible system design can allow panels and the existing geyser to be separated. Cable distance, protection and roof conditions are considered when quoting.

Reduced sunlight can lower solar heating output. Seasonal conditions, shading and household consumption affect performance, so supplementary AC heating may be needed more often on cloudy days or in winter.

Water heated during the day is stored in the insulated geyser. Night-time availability depends on the temperature reached, how much water has been used, heat losses and supplementary heating settings. It is not a guarantee of unlimited hot water.

Yes, with a compatible AC backup arrangement. Supplementary electricity heating is managed according to the selected system design and settings; we explain the agreed arrangement when handing over the installation.

It depends on the equipment and how the controls are powered, as well as available sunlight. Controls that rely on mains electricity need a suitable alternative supply to operate when the grid is off. We confirm what your selected system can do before installation.

Heating time varies with starting water temperature, tank volume, sunlight, panel output, heat losses and water used while heating. Allow time for the stored water to warm up; the same system may heat more slowly in winter or on cloudy days.

Cost depends on equipment selection, tank compatibility, roof access, mounting, cable distance, electrical protection and any remedial work. Send your location and photographs so we can discuss a suitable configuration and prepare a written quotation. Any assessment or travel charge is confirmed with you.

Solar heating can reduce grid electricity used for hot water. Your results depend on sunlight, shading, system size, usage, insulation and backup settings. Any estimate relates to water heating, rather than your entire household electricity bill, and varies from home to home.

An optional compatible Geyserwise controller with a Tuya Wi-Fi module can let you view the temperature, change temperature settings and switch heating through the Tuya Smart app. Compatible hardware, suitable Wi-Fi and internet access are required. This upgrade is not included in every installation and does not replace the PV heating equipment.

Follow the selected equipment manufacturer’s guidance for inspecting panels, mounting, wiring, electrical protection, controls and geyser components. Existing tank or plumbing issues also need attention. The system is not maintenance-free; electrical checks and repairs should be undertaken by a suitably qualified person.

Ndlovu Electrical Services is based in Centurion and serves Pretoria, Midrand, Sandton, Fourways, Johannesburg, Alberton, Benoni, Boksburg and surrounding Gauteng areas. Send your suburb to confirm availability and any travel or assessment charges. Use the phone, WhatsApp and email details shown on this page.