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Accredited Worcester Bosch boiler installation across Bristol, with up to a 12-year manufacturer guarantee on Greenstar boilers.
Almost all of Julian's work comes from repeat customers and recommendations. Over forty years, that is the only measure that means anything.
Julian is a Worcester Bosch accredited installer, which is not the same as an engineer who happens to fit Worcester boilers. Accreditation means Worcester has assessed his workmanship and training, and it is what unlocks the longest guarantees the manufacturer offers.
Fit a Greenstar boiler through an accredited installer and you can get up to a 12-year manufacturer guarantee. Fit the same boiler through a non-accredited installer and the standard cover is considerably shorter. The boiler is identical. The difference is who put it in.
Julian has been fitting gas boilers in Bristol homes for over forty years and is Gas Safe registered, reg. 198984. He works alone, so the person who quotes the job is the person who does it and the person you call afterwards.
Worcester Bosch is the only brand he installs. Sticking to one manufacturer means he knows the whole Greenstar range, the quirks of each model and how to size them properly for the older housing stock around Bristol.
Accreditation unlocks guarantees a non-accredited fitter cannot offer on the same boiler.
Heat requirement and mains flow rate both measured before a model is recommended.
Registered with Worcester and notified to Gas Safe, so nothing needs chasing.
Part of new boilers in Bristol.
We look at your home, water pressure and bathrooms, then recommend the right Greenstar model.
A straight swap is usually a single day, so you are rarely without heating for long.
Your boiler is registered with Worcester and Gas Safe, and the paperwork is handled for you.
Worcester makes three main types, and the right one depends on your house rather than your budget.
A Greenstar combi heats water on demand, so there is no cylinder and no loft tank. It suits flats and smaller homes with one bathroom, and it frees up a cupboard. The limit is that it can only serve one hot tap properly at a time, so a busy family house with two bathrooms can find it stretched.
A Greenstar system boiler works with a hot water cylinder. It handles two or more bathrooms comfortably and gives strong flow to several taps at once, particularly when paired with an unvented cylinder. It needs somewhere to put the cylinder, usually an airing cupboard.
A Greenstar regular boiler, sometimes called a heat only or conventional boiler, keeps the traditional setup with a cylinder and feed tanks in the loft. It is often the sensible choice in an older Bristol property where the pipework and radiators are not suited to the higher pressures of a fully sealed system.
Sizing matters as much as type. An oversized boiler cycles on and off, wears faster and wastes gas. Julian works out the actual heat requirement of your home rather than fitting the biggest unit that will squeeze into the space.
Heats water on demand. No cylinder, no loft tanks.
Pairs with a cylinder for stored, mains-pressure hot water.
Keeps the traditional cylinder and loft feed tanks.
The headline reason people choose an accredited installer is the guarantee. Up to twelve years of manufacturer cover on a new Greenstar is a long time to be protected against the expensive parts failing.
The exact length depends on the model and the system it goes into, so Julian will confirm the cover for your specific boiler in the quote rather than promising a number up front. Some installations also require a system filter to be fitted for the longest term to apply, which is good practice anyway.
The guarantee is conditional on annual boiler servicing by a Gas Safe registered engineer. Miss a year and Worcester can decline a claim, so it is worth putting the service in the diary at the same time each year.
Registration is handled for you. Julian notifies Gas Safe and registers the boiler with Worcester, and your paperwork arrives without you chasing it.
The Greenstar range covers combi, system and regular boilers, and the right one depends on the house rather than the budget. A combi suits most one bathroom homes and removes the cylinder and loft tanks entirely. A system boiler pairs with a cylinder and handles two or more bathrooms properly. A regular boiler keeps the traditional arrangement, which in some older Bristol properties is the more sensible fit.
Output matters as much as type. Worcester publish a range of outputs within each model line, and fitting the largest one that will squeeze into the space is a common and expensive error. An oversized boiler fires, heats quickly, shuts off and repeats, which wears components faster and burns more gas than a correctly sized unit running steadily.
Julian works out the actual heat requirement from the number of radiators, room sizes, insulation and external walls, then measures the incoming mains flow rate before recommending anything. A combi fitted to a weak supply produces a weak shower regardless of which badge is on the front, and that is a disappointment you would live with daily for fifteen years.
Where an existing system has original pipework or radiators not suited to running sealed and pressurised, he will say so at the survey rather than discovering it midway through the installation.
Any Gas Safe registered engineer may legally fit a Worcester boiler. Accreditation is a separate assessment by the manufacturer covering training and standard of workmanship, and it changes three practical things.
The longest terms, up to twelve years on a new Greenstar, are only available through an accredited installer. The same boiler fitted by a non-accredited engineer cannot be registered for the same cover, which is often worth more than the gap between two quotes.
Fault codes, component behaviour and the known weak points differ between manufacturers. Working principally on one range means diagnosis is quick and the correct part goes in first time rather than by elimination.
The installation is notified to Gas Safe and the guarantee registered with Worcester on your behalf, with the paperwork handed over on the day. Guarantees that were never registered are a common and unwelcome discovery when a fault appears years later.
Worcester Bosch assesses the installer’s training and standard of work before granting accreditation. It is what allows the longest manufacturer guarantees to be offered on a new Greenstar boiler.
A straightforward swap is usually one day. Moving the boiler to a different position, or changing from a cylinder system to a combi, takes longer because of the pipework involved.
Yes. The old boiler, and the cylinder or tanks if they are being removed, are taken away and disposed of as part of the job, and the house is left clean.
For new boilers, yes. It is a deliberate choice to know one manufacturer thoroughly rather than several superficially.
Yes, and there is no obligation. You get a clear fixed price up front with no surprises later, and no pushy follow-up.
If you are comparing quotes, ask each installer whether they are Worcester accredited and what guarantee term they can actually offer on the specific model quoted. The answer varies more than most people expect on what looks like the same boiler.
See also boiler installation, combi boiler installation, boiler replacement and boiler servicing. We work across Staple Hill, Downend, Fishponds and other areas.
Call Julian on 07831 718509 for a free survey and a fixed quote confirming the exact guarantee term on the model recommended for your home.
Already have a Greenstar and it has developed a fault? See Worcester Bosch boiler repair.
Worth knowing before you compare quotes. The guarantee length attached to a Greenstar depends on who fits it, not only on which model you buy. An accredited installer can register the longest terms available; a non-accredited engineer fitting the identical boiler cannot. That difference is frequently worth more than the gap between two prices, and it is invisible until something goes wrong in year eight. Ask any installer to confirm in writing what guarantee length they will register, and check it against what the manufacturer advertises.
Call Julian for honest advice on the right Greenstar boiler for your home.