Which one is preferable: combi boiler or system boiler?Thank you!
There are numerous factors to consider. Size of house, number of bathrooms, en suites. Radiators. Distance from boiler to main tap usage. Other gas appliances in house, your meter will only allow so much gas through. Old lead piping on hot supply which will need replacing. Old leaky taps? As a rule of thumb they are perfect for a standard 3/4 bedroom with one bathroom. Usually the better the boiler the better your hot water supply, depending on the water pressure/flow at your property. If you are not sure then get expert advise. You will not find this on here as there are to many factors to consider, each property needs individually surveying.
If you are buying the correct model for your house size, the combi boiler rules. You get an extra room (your old airing cupboard) and you get hot water on tap without paying through the nose to fill the immersion tank, it might make taking a shower a bit of a nuisance sometimes, but you soon get used to the right setting for your shower .
