A right-sized heat pump water heater for your household, cutting your hot water electricity costs without cutting corners on comfort.
Written by the March Technology Technical Team · Last Updated: July 2026 · 5 min read
The biggest mistake in residential heat pump installation is getting the tank size wrong — too small and you run out of hot water at peak times, too large and you're paying to heat water you don't use. We size every residential system around your household's actual hot water habits: number of occupants, bathrooms, and typical usage patterns.
Most households replacing an electric immersion geyser see a payback period of 2-4 years through lower electricity bills alone. If you'd like to compare against a solar water heater as well, our main heat pump services page and installation cost guide cover both options, or explore heat pump water heaters specifically.
Typical tank size: 150-300 litres for most households
Installation cost: KSh 150,000 – 350,000 fully installed
Estimated payback: 2-4 years vs an electric geyser
Installation time: Usually completed within a single day
We install residential heat pumps nationwide, for standalone houses, townhouses and apartment units.
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.
Most 3-4 bedroom households are comfortably served by a 150-200 litre unit, while larger households or homes with multiple bathrooms may need 250-300 litres — we confirm exact sizing during the free survey.
Heat pumps typically use up to 70% less electricity than a direct electric immersion heater for the same hot water output, which usually pays back the installation cost within 2-4 years.
Yes, provided there's a suitable spot for the compact outdoor unit with adequate airflow — we assess balcony, rooftop or utility area placement during the site survey.
Yes — smaller capacity units are available and remain cost-effective even for one or two-person households, particularly given long-term electricity savings.