A 200L low-pressure solar water heater with a stainless steel tank is an affordable, eco-friendly hot water solution ideal for Kenyan households (2-4 people). It uses gravity-fed (thermosyphon) technology, where solar-heated water naturally circulates to the tank—no pumps needed. The stainless steel tank ensures durability and corrosion resistance, perfect for hard or borehole water. Based on current market data (October 2025), these systems cost KSh 35,000–KSh 55,000 installed, with a 3–5 year payback via energy savings.
| Aspect | Pros | Cons |
|---|---|---|
| Cost | Affordable upfront; low running costs (no electricity). | Initial install ~KSh 40,000–60,000 total. |
| Performance | Reliable in sunny areas; simple maintenance. | Less efficient in cold/rainy seasons; needs backup (e.g., electric heater). |
| Durability | SS tank resists rust; tubes last 10+ years. | Vacuum tubes fragile (avoid hail); low pressure limits direct high-flow use. |
| Eco-Friendliness | Zero emissions; reduces grid reliance by 70%. | Requires roof space (~2m x 2m). |
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