Category: boiler service
The most reliable combi boilers should have the minimum of moving parts – this is an important factor to look for as it will mean less can go wrong the four moving parts in a combi boiler are the fan, pump, gas valve, dhw (domestic hot water) flow meter. Which? gave the baxi duo-tec combi 28 he an overall score of 79%, saying: 'this combination boiler is efficient, user-friendly and a great choice for flats and smaller houses.'.