Best Boilers for Flats and Small Homes
A small flat or 1–2 bed property only needs a 24–28kW combi boiler. Oversizing wastes money and can actually reduce efficiency.
Top Picks for Small Homes
- Worcester Bosch Greenstar 4000 24kW — compact, reliable, 10-year warranty
- Vaillant ecoFIT pure 25kW — easy to service, good efficiency, 5-year warranty
- Ideal Logic+ 24kW — budget-friendly, good reliability, 7-year warranty
- Baxi 400 24kW — compact design, 5-year warranty, good value
Why Not Oversize?
An oversized boiler 'short-cycles' — it fires up, quickly reaches temperature, and shuts off again. This wastes fuel and puts more wear on components.
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