Our boilers
Boilers: combi, system and regular compared:
Every home is different. Here’s how the three main types of boiler compare, plus a quick quiz to point you in the right direction.
Compare
Three types. One right answer.
Combi boilers
Best for: Most homes with one bathroom
- Hot water on demand
- No cylinder or loft tanks
- Compact and most efficient
Hot water flow is shared if two taps run at once.
See combi boilersSystem boilers
Best for: Homes with two or more bathrooms
- Plenty of hot water at once
- Cylinder but no loft tanks
- Good mains pressure
Needs space for a hot water cylinder.
See regular & system boilersRegular boilers
Best for: Homes with a cylinder and loft tanks
- Works with existing pipework
- Copes with high demand
- Good for low water pressure
Needs room for a cylinder and tanks in the loft.
See regular & system boilers
Boiler finder
Not sure? Ask the quiz.
Answer the questions and we’ll suggest the type of boiler that’s likely to suit your home.
We’d suggest
A rough guide only. We’ll confirm what’s right for you at your free survey.
Is it time?
How efficient is your old boiler?
years
A rough guide using typical efficiency for boilers of that age. A modern A-rated condensing boiler is over 90% efficient.
82% estimated efficiency
Of every £1 you spend on gas, around 18p goes up the flue.
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Boiler questions
What’s the difference between a combi, system and regular boiler?
A combi heats water on demand straight from the mains, so there’s no cylinder or tank. A system boiler heats a hot water cylinder but needs no loft tanks. A regular (heat-only or conventional) boiler works with a cylinder and header tanks in the loft.
Can I switch from a regular boiler to a combi?
Usually, yes. We can remove the cylinder and loft tanks and fit a combi, freeing up space. We’ll check your water pressure and hot water needs first to make sure a combi will suit you.
How long are the guarantees?
Depending on the model, 7 to 10 years as standard, extended to 8 or 11 years on selected Alpha combi boilers when fitted with a CYCLONE PLUS magnetic filter.
Ready to feel the warmth?
Book your free, no-obligation home survey and we’ll recommend the right boiler or heating upgrade for your home.