Both are efficient alternatives to a standard electric geyser — but they solve the hot water problem differently, and the right choice depends on your property.
Written by the March Technology Technical Team · Last Updated: July 2026 · 6 min read
A solar water heater has no ongoing electricity draw at all, which is its biggest advantage — but it depends on sunlight, needs more roof space, and typically needs an electric backup element for consistently cloudy days. A heat pump uses a modest amount of electricity, but works consistently day or night regardless of weather, and needs only a compact outdoor unit rather than roof-mounted panels.
Many properties in Kenya, especially larger hotels and commercial sites, now install both technologies together — solar for baseline free heating, with a heat pump handling the gap during cloudy periods or peak demand. If you'd like the running-cost comparison against a standard electric geyser instead, see our heat pump vs electric water heater guide.
Lowest running cost: Solar — no ongoing electricity draw
Most consistent output: Heat pump — works day or night, any weather
Roof space needed: Solar needs more; heat pump needs a compact outdoor unit only
Common approach: Many properties combine both technologies
Not sure which fits your property? We're happy to give an honest recommendation during a free site survey — we install heat pumps, not solar, so we've no reason to oversell either option.
Request a Free Site SurveyTell us about your property and needs, and one of our certified technicians will call you back with a personalised quote.
Yes, this is increasingly common, particularly for hotels and larger commercial sites wanting free solar heating with heat pump backup for cloudy periods or peak demand.
This varies by system size and brand, but solar and heat pump systems are often broadly comparable in upfront cost for equivalent capacity — we can quote both scenarios during a site survey.
A heat pump works consistently regardless of sunlight, which makes it more predictable during Kenya's cloudier or rainy periods, while solar performs best in consistently sunny conditions.
Both work for either, but hotels with high, consistent demand often benefit most from a heat pump's reliability, while homes with good roof exposure can do very well with solar alone or combined with a heat pump.