COMBI BOILER REPLACEMENTS
Instant hot water, compact design, lower running costs — combination boilers are the most popular choice for UK homes. NorthHeat installs and swaps combis across Yorkshire.
The benefits of a combination boiler
A combination boiler heats your home and delivers hot water on demand from a single, compact unit — with no need for a separate hot water cylinder or cold water storage tank in the loft. This frees up valuable space and eliminates the wait for hot water that comes with older stored systems.
Modern A-rated combis are also significantly more efficient than older boilers, meaning lower gas bills and a smaller carbon footprint. For most homes up to four bedrooms with one or two bathrooms, a combi is the most cost-effective and practical choice.
- Instant hot water — no cylinder, no waiting
- Space-saving — loft tank and airing cupboard cylinder removed
- A-rated efficiency — lower running costs
- Compact unit suitable for most cupboard locations
- Ideal for 1–4 bedroom properties
- Simplified pipework compared to system boilers
- Easy to convert from back boiler or regular boiler
The best combi boilers available
We work with all leading boiler manufacturers and will always recommend the model that best fits your property, budget and hot water demand — with no hidden commission or brand bias.
Worcester Bosch
The most-recommended boiler brand in the UK. The Greenstar range is renowned for reliability, efficiency and excellent after-sales support with up to 12 years' warranty available.
Vaillant
Premium German engineering with near-silent operation and outstanding long-term reliability. The ecoTEC range offers up to 10 years' warranty when installed by an accredited engineer.
Ideal Boilers
Made in the UK and excellent value for money. The Logic Max range is a consistently reliable choice with straightforward servicing and wide parts availability.
Baxi
A trusted UK brand since 1866. Wide service network, competitive warranties and strong performance at an accessible price point.
Viessmann
German-engineered boilers at the premium end of the market. Built to an exceptional standard with industry-leading energy efficiency.
Alpha Boilers
Compact units particularly suited to smaller properties or tight installation spaces. Reliable performance at a budget-friendly price.
Switching from a regular or back boiler
Converting from a conventional boiler-and-cylinder system or an old back boiler to a modern combi is one of the most popular jobs we carry out. The benefits are significant — you gain a more efficient unit, recover the space taken up by the cylinder and cold water tank, and typically see an immediate reduction in running costs.
The conversion involves removing the old boiler, hot water cylinder and any loft tanks, capping or repurposing redundant pipework, and installing the new combi in the most practical location — usually a kitchen cupboard or utility room.
Is a combi right for my home?
Combis work brilliantly for most homes up to 4 bedrooms with 1–2 bathrooms. Larger homes or those with high simultaneous hot water demand (multiple showers running at once) may be better served by a system boiler with a cylinder. We'll tell you honestly at the survey stage which is right for you.
Combi boiler FAQs
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Ready to switch to combi?
Free quotes across North & South Yorkshire. Gas Safe registered throughout, all brands available.