Boiler Installation in Padiham: Timescales, Costs and Prep

How long the job takes

The timescale depends almost entirely on what is coming out and where the new boiler is going. Swapping an old combi for a new one in the same position is usually a single working day, with heating and hot water back on by teatime.

Padiham has a lot of stone terraces and older semis, and many still have a regular boiler with a cylinder in the airing cupboard and tanks in the loft, or a back boiler behind the living room fire. Converting one of those to a combi means removing tanks, rerouting pipework and often running a new gas supply, so allow longer.

• Like for like combi swap, same location: about 1 day
• Combi moved to a new position, such as kitchen to loft: 1 to 2 days
• Regular or system boiler converted to a combi: 2 days
• Back boiler removal and conversion: 2 to 3 days

What it is likely to cost

Prices vary with the boiler brand, its output and how much alteration the house needs, so treat these as realistic ranges, not quotes. Around Padiham and Burnley, a straightforward combi swap typically falls between £1,800 and £3,000 fitted. A conversion from a regular or back boiler system is more often £3,000 to £4,500, and can go higher in a larger house.

A proper quote should follow a visit to the property, not a guess over the phone. If two quotes are far apart, check whether both include the same things, especially the system clean, filter and controls.

• Gas pipe upgrade: older homes often have 15mm pipe where a modern combi needs 22mm
• Flue position: in terraces with tight back yards, the flue may need extending or a plume kit to stay clear of windows and boundaries
• System cleaning: a chemical flush is the minimum, and a full powerflush adds cost if the radiators are heavily sludged
• Controls: a new programmable or smart thermostat is normally required to meet current building regulations
• Condensate pipe: routing it internally costs a little more but avoids it freezing in a cold Pennine winter

What happens on the day

The engineer will lay dust sheets, isolate the gas and water, and drain the system. The old boiler comes off the wall, pipework is altered, and the new boiler, flue and magnetic filter are fitted. Expect to be without heating and hot water for most of the day, and without water at the taps for shorter spells.

Once everything is filled and tested, the boiler is commissioned. That means checking gas pressure and combustion readings with a flue gas analyser and recording the results in the Benchmark checklist at the back of the manual. Our water here is soft, so limescale is rarely the problem, but sludge from old steel radiators is, which is why the clean and the filter matter.

Before leaving, the engineer should show you how to use the controls and top up the pressure.

How to prepare your home

A little preparation saves time and protects your belongings.

• Clear the area around the boiler, plus the airing cupboard and loft hatch if tanks or a cylinder are being removed
• Make sure every radiator can be reached, and move furniture away from them
• Leave space outside for a van as close as possible, which matters on narrow terraced streets with parking on both sides
• Keep pets and small children out of the working areas
• Have a kettle filled and plan for a day without hot water
• In cold weather, borrow or buy a plug-in heater if anyone in the house is elderly or unwell

Paperwork you should receive

The installation must be carried out by a Gas Safe registered engineer, and you are entitled to check their ID card. Afterwards the work is notified to Burnley Borough Council's building control through Gas Safe, and a Building Regulations Compliance Certificate arrives by post, usually within a few weeks. Keep it safe, as a solicitor will ask for it if you sell.

You should also have the completed Benchmark checklist and confirmation that the manufacturer's warranty is registered. Warranties commonly run from 5 to 12 years depending on the model, and almost all require an annual service to stay valid.