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Combi boiler installation across Bristol. Instant hot water, no cylinder, no loft tanks, fitted by a Gas Safe registered Worcester Bosch accredited installer.
Almost all of Julian's work comes from repeat customers and recommendations. Over forty years, that is the only measure that means anything.
A combi boiler heats water the moment you turn a tap, so there is no hot water cylinder and no cold feed tanks in the loft. For a lot of Bristol homes that means an airing cupboard back, a tidier loft, and no waiting for a tank to reheat.
Julian fits Worcester Bosch Greenstar combi boilers across Bristol. He is Gas Safe registered, reg. 198984, and a Worcester accredited installer, so a new combi comes with up to a 12-year manufacturer guarantee.
Combis are the most popular boiler type in the UK for good reason. They are compact, efficient, and you only heat the water you actually use rather than keeping a tank hot all day. Running costs usually drop compared with an old cylinder setup.
They are not right for every house, though, and Julian will say so if yours is one of them. Honest advice on the correct boiler matters more than selling you the one that happens to be popular.
Heated the moment you turn a tap. No waiting for a tank to reheat.
No cylinder, no loft tanks. Genuinely useful space returned in a narrow house.
A combi cannot create pressure that is not there, so we check before recommending one.
Part of new boilers in Bristol.
A combi suits a flat, a terrace or a semi with one bathroom and a reasonable mains water pressure. That covers a large share of the housing around Staple Hill, Fishponds and Kingswood, which is why so many of the boilers Julian fits are combis.
The main limitation is that a combi heats water for one outlet at a time. Run a shower and the kitchen tap together and both drop off. In a house where two people need showers at the same time each morning, that becomes a daily irritation rather than a technical detail.
Mains pressure and flow rate matter too. A combi has nothing stored to draw on, so if the incoming supply is weak the shower will be weak. Julian measures the flow rate at the survey rather than assuming, because a combi fitted to a poor supply disappoints every single day.
If your home has two or more bathrooms, or you like a powerful shower, a system boiler with an unvented hot water cylinder is usually the better answer. It costs more to install and needs cupboard space, but it delivers strong hot water to several outlets at once.
Older properties sometimes need a bit more thought. Original pipework and radiators may not suit the higher pressure of a sealed system, and a full power flush or some pipe upgrading can be part of the job. Julian will tell you that at the quote stage, not halfway through.
The cylinder comes out of the airing cupboard, the loft tanks come out, and redundant pipework is stripped or capped. The system is converted to run sealed and pressurised. You gain a full cupboard and an empty loft, and stop heating water nobody uses.
Two bathrooms in regular simultaneous use is the clearest case, along with a poor mains flow rate. Large baths too: a combi fills at whatever rate it can heat, so a big bath takes noticeably longer than it would from a cylinder.
Heating output must match the heat loss of the house. Hot water output governs whether the shower feels strong. Those pull in different directions, which is why a small terrace often wants a high hot water rating with deep modulation for the radiators.
Incoming mains water is considerably colder in January than July, so the same boiler gives a weaker shower in winter. Julian sizes for the winter case, which is the difference between a shower you are happy with all year and one you tolerate for half of it.
Swapping one combi for another in the same position is usually a single day. You are without heating and hot water for that working day only, and it is back on before Julian leaves.
Converting from a cylinder system to a combi takes longer, normally two days. The cylinder comes out, the loft tanks are removed, redundant pipework is capped or stripped, and the system is converted to run sealed and pressurised. You gain a cupboard and lose a lot of clutter in the loft.
Every installation includes a system flush and a magnetic filter. Old central heating water carries sludge, and pushing that through a brand new heat exchanger is the fastest way to wreck it. The filter also protects the guarantee.
The old boiler is removed and taken away, the new one is commissioned and tested, and the controls are set up and explained. Julian registers the boiler with Worcester and notifies Gas Safe, so the paperwork arrives without you chasing anyone.
Dust sheets go down, and the house is left clean. Tidy work is something Julian takes seriously, and it is what most of the repeat business comes from.
Combi boilers carry two separate output figures, and confusing them is behind a lot of disappointing installations. The heating output has to match the heat loss of the house, worked out room by room. The hot water output determines how quickly the boiler can raise cold mains water to shower temperature, and that is what governs whether the shower feels strong.
Those two figures pull in different directions. A small terrace may need very little heating output but still want a decent hot water performance, which is why the correct answer is often a boiler with a high hot water rating and modulation that lets it turn down low for the radiators.
In winter the incoming mains water is considerably colder than in summer, so the same boiler delivers a noticeably weaker shower in January than it did in July. Julian sizes for the winter case rather than the summer one, which is the difference between a shower you are happy with all year and one you tolerate for half of it.
If the measured flow rate at your property will not support a combi that satisfies the household, he will say so and recommend a system boiler with a cylinder instead, even though it is the more involved job.
One thing worth knowing before the day: mains water pressure and flow rate set the ceiling on what any combi can deliver. A combi heats water on demand straight from the mains, so it cannot produce more than the incoming supply gives it, whatever its output rating says. That is measured at survey rather than assumed, because it is the single most common reason a new combi disappoints a household that expected better showers.
Most combi boiler replacements start from around £2,000, depending on the boiler and your home. You get a clear, fixed quote before any work begins.
A straightforward swap is done in a day, so you are rarely without heating for long. A conversion from a cylinder system usually takes two days.
Sometimes, but it is often not the best choice. If two showers might run at once, a system boiler with a cylinder will serve you better.
Yes. If you are converting to a combi, the cylinder and tanks are removed and taken away as part of the job.
It depends on the number of radiators, the size of the property and your mains flow rate. Julian works that out at the free survey rather than guessing from the outside.
If you are unsure whether a combi suits your household, the free survey settles it in twenty minutes. Flow rate measured, bathrooms counted, honest answer given either way.
See also boiler installation, Worcester Bosch boiler installation, boiler replacement and central heating. We cover Fishponds, Kingswood, Staple Hill and more areas.
Call Julian on 07831 718509 for a free survey, flow rate measured and a fixed quote with no obligation.
Call Julian for honest advice and a no-obligation fixed price.