How many showers can a boiler provide?
It’s a common question from many of the homes we visit when providing a quote for a new boiler; My home has more than one shower, will a normal sized boiler meet my requirements? To this, our first question is always; how many of your showers are electric and how many run directly from the boiler supply?
Do you have gas or electric showers?
If you have 1 shower from the boiler and also 1 electric shower, then ignore the electric shower as the boiler only has 1 shower to provide water for. If you have 2 electric showers, the boiler does not feed any of them and you might even be able to choose the smaller 24kW boiler as its only need is to heat the property and do the dishes.
If your property has 2 showers that both require hot water from the boiler, you need to check that you have enough incoming cold water to supply the showers before choosing a boiler that can heat up this water.
What size boiler do I need to run 2 or more showers directly from my boiler?
A 35kW boiler and 15 litres incoming cold water would be the minimum requirement to feed 2 showers at the same time. This is a boiler suitably equipped to provide hot water for 2 showers that both run from the boiler and are not electric showers!
Big Boiler Shop Top Tip!
15 litres divided by 2 showers equals7.5 litres and that is no Niagra Falls, but certainly better water flow than cheap electric showers provide.
If you wanted to deliver the best possible results from a Combi boiler to a property with 2 or more showers that run directly from the boiler supply, I suggest the largest boilers with outputs of 38-42kW. But remember to check your incoming cold water and expect that the larger boiler comes with added costs of upgrading the gas pipe.
Need more advice before investing in a new boiler? We advise reading our free homeowner guide to buying a new boiler e-book, available on our home page
Feel free to contact us for free impartial advice about your new boiler installation needs.