A New Boiler Fitted Properly,By The Engineer Who'll StillBe Servicing It in Stockport and Greater Manchester.
Straight advice on whether your boiler is genuinely worth replacing, the right size for your home rather than the biggest one we can sell you, and a clean, certificated installation you never have to think about again.
Boiler Installation, done properly.
Replacing a boiler is the biggest single spend most households make on their heating, and it is the one decision where a bad job costs you for the next decade. Swainson Gas Services has been fitting and looking after boilers across Stockport and the surrounding areas since 1986, first with Alan, now with his son John. Every installation is carried out personally, not sub-contracted to a fitting team you will never see again, and the same engineer who fits your boiler is the one who services it every year afterwards.
A full boiler installation covers survey and heat-loss sizing, removal and safe disposal of the old appliance, new boiler fitted with the correct gas supply and condensate route, system cleanse and inhibitor, magnetic filter fitted, controls set up and explained, commissioning with a flue gas analyser, Building Regulations notification, and manufacturer warranty registration in your name.
Homeowners with a boiler that keeps breaking down or is beyond economical repair, people moving to a modern condensing combi from an old back boiler or heat-only system, landlords who want a reliable appliance and a warranty they can lean on, and anyone who has been quoted for a replacement and simply wants a second, honest opinion.
The honest answer is: when repair costs stop making sense, not before. A boiler over twelve years old with a failed heat exchanger, a discontinued parts list, or a repeat fault history is a replacement candidate. A ten-year-old boiler with one failed part usually is not. If the appliance is still safe and repairable, we will tell you to repair it.
Most of the bad boiler installations we are called out to fix were not fitted badly on the day, they were specified badly before anyone picked up a spanner. An oversized boiler short-cycles, wastes gas and wears out early. A system fitted without a cleanse and a filter fills the new heat exchanger with the old system's sludge inside two winters. A boiler never registered with the manufacturer has no warranty at all when you need it.
The cost of putting it off.
A new boiler should be the end of your heating problems, not the start of a new set. Here is what goes wrong when an installation is rushed, undersized on thought and oversized on kilowatts.
Oversized boiler, higher bills
A 35kW combi in a two-bed terrace fires up, satisfies the demand in seconds and shuts down again, over and over. Short-cycling burns more gas, stresses components and shortens the boiler's life.
New boiler, old sludge
Fitting a modern condensing boiler onto an uncleansed system pushes years of magnetite straight into the new heat exchanger. It is the single most common reason a new boiler fails early, and the most common reason a warranty claim is refused.
No warranty on record
Manufacturer warranties only exist once the installation is registered by a Gas Safe engineer and serviced annually. An unregistered fit leaves you with a five-figure appliance and no cover.
No Building Regulations notification
Every new gas boiler must be notified to Building Control. Miss it and it surfaces at the worst moment, usually mid-sale, with a solicitor asking for a certificate nobody has.
- Choosing the boiler by price per kW rather than by hot water flow rate and the number of bathrooms actually in use.
- Letting a quote skip the system cleanse, the magnetic filter, or the inhibitor to come in cheaper than the next one.
- Replacing a boiler that a competent repair would have kept running for another five years.
A clear five-step system.
No guessing, no meter-running. Every job follows the same repeatable process, that's how the result stays consistent.
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01
Survey and sizing
We look at the property, radiator count, bathrooms, water main flow rate and existing pipework, then size the boiler to the home. No guesswork, no upselling.
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02
Honest written quote
One fixed price covering boiler, parts, labour, cleanse, filter, disposal and certification. What is included is written down before you commit.
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03
Removal and preparation
Old appliance drained, disconnected and removed, gas supply and condensate route checked and upgraded where the new boiler requires it.
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04
Installation and cleanse
New boiler fitted, system cleansed, inhibitor dosed and a magnetic filter fitted to protect the heat exchanger from day one.
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05
Commission, register, explain
Combustion analysis, controls set up, Building Regulations notified, warranty registered in your name, and a plain-English walkthrough before we leave.
What you actually get.
Sized for your home
The right output for your radiators and hot water demand, which means lower bills and a boiler that is not fighting itself.
Full manufacturer warranty
Registered properly on the day, then kept valid by an annual service from the same engineer.
Protected from day one
System cleanse, inhibitor and magnetic filter included as standard, not as an optional extra.
Certificated and notified
Building Regulations compliance certificate for your files, your solicitor and any future sale.
Tidy, respectful work
Dust sheets down, old boiler taken away, and the house left as we found it.
Aftercare that continues
500+ households on ongoing maintenance with us. The person who fits it is the person who looks after it.
The detail that matters.
Boiler installation decisions are mostly made before the fitting starts. These are the choices that actually matter in Stockport housing stock.
Combi, system or regular?
A combi suits most one-bathroom homes: no cylinder, no loft tank, hot water on demand, with the boiler prioritising a hot tap over the radiators while it runs. Homes with two or more bathrooms in simultaneous use, or a poor incoming mains flow rate, are usually better served by a system boiler and an unvented cylinder. We measure the mains flow before recommending anything.
Swapping a back boiler or heat-only system
Older Stockport semis and terraces still run back boilers behind the fire, or heat-only boilers with a loft tank and a cylinder. Converting to a combi frees up the cupboard and loft space, but it changes the pipework, the flue route and sometimes the gas supply size. We price the whole conversion honestly rather than quoting a straight swap and adding extras on the day.
Brands we fit
Worcester Bosch, Vaillant, Ideal, Baxi, Glow-worm, Main and Potterton. We fit what suits the property and the budget, and we are candid about parts availability and warranty length rather than pushing whichever brand pays best.
Gas supply, flue and condensate
A new boiler often needs a larger gas supply pipe than the appliance it replaces, a compliant flue termination distance, and a condensate run that will not freeze on the first cold snap. These are the three details most commonly skipped, and all three are checked and priced up front here.
Repair or replace?
We will always tell you when a repair is the better financial decision. A boiler under ten years old with an available part is usually worth fixing. A boiler over twelve with a failed heat exchanger, obsolete parts, or a third fault in two years usually is not.
Questions we hear every week.
If you have a question that isn't answered here, ring John directly on 07450 308361.
Often booked together.
Thinking about a new boiler? Get an honest answer first.
Free survey, correct sizing, fixed written price, full warranty registration and a 12-month workmanship guarantee.