How Much Does It Cost to Move a Boiler?

These are guide prices rather than fixed quotations. The actual cost will depend on the boiler, property, proposed position, pipe routes and regional labour rates.

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Current published estimates suggest approximately £600 to £1,000 for a typical existing-boiler relocation, while a new mid-range combi boiler installed in a different position may cost around £2,650.

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What Does the Cost of Moving a Boiler Include?

 

Moving a boiler involves considerably more than taking it off one wall and fixing it to another.

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The installer may need to:

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• Drain the heating system.

• Disconnect the existing boiler.

• Remove and transport the appliance safely.

• Extend or reroute the gas supply.

• Extend the heating flow and return pipes.

• Provide new hot- and cold-water connections.

• Install a new condensate drainage route.

• Install or alter the electrical supply.

• Form a new flue opening.

• Install flue extensions or bends.

• Seal the redundant flue opening.

• Reconnect and refill the heating system.

• Test the gas supply.

• Check the flue and combustion.

• Commission the boiler in its new position.

• Balance the radiators where required.

• Complete the relevant installation documentation.

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The price should state whether making good, decorating, boxing in pipework and disposing of waste are included.

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Cost to Move a Boiler Within the Same Room

 

Typical cost: £500 to £1,000.

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Moving a boiler within the same room is usually the least expensive relocation.

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A short move along the same wall may only require relatively minor extensions to:

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• Gas pipework.

• Heating flow and return pipes.

• Hot- and cold-water pipes.

• Condensate drainage.

• Electrical connections.

• The boiler flue.

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The price will be higher if the boiler is being moved to the opposite side of the room or if the existing pipework must be concealed beneath floors or inside walls.

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The new position must still satisfy flue-clearance, access and servicing requirements.

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Cost to Move a Boiler to Another Room

 

Typical cost: £800 to £1,500

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Moving a boiler from a kitchen to a utility room, airing cupboard, garage or another room normally requires longer pipe runs and a completely new flue position.

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The cost will depend on:

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• The distance between the old and new positions.

• The route available for the gas pipe.

• The location of the heating pipes.

• Access to a suitable waste pipe for the condensate.

• The availability of a compliant flue route.

• The need to open floors, walls or ceilings.

• Whether pipework can be surface-mounted or must be concealed.

• Electrical alterations.

• Making good and decorating.

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Moving the boiler into an adjoining utility room may be relatively straightforward. Moving it across the house could involve extensive pipework and disruption.

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Cost to Move a Boiler Upstairs or Downstairs

 

Typical cost: £1,000 to £1,500 or more

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Moving a boiler between floors is generally more expensive than relocating it on the same level.

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The engineer may need to run:

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• A new gas pipe between floors.

• New heating flow and return pipes.

• Hot- and cold-water supplies.

• Condensate drainage.

• Electrical cables.

• Control wiring.

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Floorboards may need to be lifted and walls or ceilings opened to create suitable routes.

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A published 2026 estimate places a typical upstairs-to-downstairs boiler move at approximately £1,000, although complex projects can cost more.

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How Much Does It Cost to Move a Boiler into the Loft?

 

Typical cost: £1,200 to £2,000 or more

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A loft can provide a convenient position for a boiler, particularly when homeowners want to release kitchen or airing-cupboard space.

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However, a loft installation may require:

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• A safe boarded access route.

• Permanent lighting.

• A suitable working platform.

• Safe access around the boiler.

• Guarding near the loft hatch.

• Frost protection.

• Insulation to exposed pipework.

• A suitable condensate route.

• A vertical or horizontal flue.

• Roof access or scaffolding.

• Reinforcement where necessary.

• A suitable gas supply.

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The boiler must remain accessible for servicing, repairs and eventual replacement.

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Scaffolding, roof work and long vertical pipe runs can make a loft relocation significantly more expensive than a same-floor move.

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How Much Does It Cost to Move a Boiler into a Garage?

 

Typical cost: £900 to £1,800

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Garages are popular boiler locations because they remove the appliance from the main living accommodation.

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The cost will depend on how close the garage is to the existing:

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• Gas supply.

• Heating system.

• Water services.

• Electrical supply.

• Drainage.

• External wall or roof flue position.

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The installer must protect the boiler and pipework against freezing. The appliance may require frost protection, insulated pipes and suitable controls.

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An integral garage is generally easier and less expensive than a detached garage requiring underground services.

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How Much Does It Cost to Move a Combi Boiler?

 

Typical cost: £600 to £1,500

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Combi boilers are often easier to relocate than conventional systems because they do not rely on a separate hot-water cylinder or loft storage tanks.

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However, a combi boiler still requires connections for:

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• Gas.

• Heating flow.

• Heating return.

• Mains cold water.

• Domestic hot water.

• Condensate drainage.

• Electricity.

• The flue.

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The incoming water pressure and flow rate must also be suitable at the proposed position.

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A short combi-boiler move may be completed within one day. More complicated relocations can take two days or longer.

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Is It Better to Move the Existing Boiler or Install a New One?

 

Moving an existing boiler may make sense where it is:

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• Relatively new.

• Reliable.

• Still under warranty.

• Suitable for the property.

• Compatible with the proposed new location.

• In good physical condition.

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Replacing the boiler may be more economical where it is:

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• More than 10 years old.

• Frequently breaking down.

• Out of warranty.

• Poorly sized for the property.

• Inefficient.

• Incompatible with modern controls.

• Showing corrosion or other signs of deterioration.

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Labour is required to disconnect, move and reconnect the existing boiler. If the appliance is approaching the end of its serviceable life, it may not be sensible to spend a substantial amount relocating it.

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A current UK guide estimates that supplying and installing a mid-range combi boiler in a different location may cost around £2,650, although the final total will vary considerably by model and installation complexity.

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What Affects the Cost of Moving a Boiler?

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Distance between the old and new positions

The farther the boiler is moved, the more pipework, labour and making good will normally be required.

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A one-metre move along the same wall is very different from moving a boiler from an upstairs bedroom to a ground-floor garage.

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Gas-pipe route

The new boiler position must receive an adequate gas supply.

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A longer route may require:

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• Larger-diameter gas pipe.

• Floor lifting.

• Wall openings.

• External pipework.

• Additional clips and protection.

• Gas-rate and pressure testing.

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Published cost estimates suggest that rerouting a gas pipe can add approximately £45 to £85 per metre, depending on the installation.

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Flue position

A new boiler location will normally require a new flue route.

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The flue must terminate safely and comply with the manufacturer's instructions and applicable installation requirements.

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The engineer will consider its distance from:

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• Windows.

• Doors.

• Air vents.

• Boundaries.

• Corners.

• Roof overhangs.

• Walkways.

• Neighbouring properties.

• Soil and rainwater pipes.

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Flue extensions and bends can increase the price. Vertical flues through a roof will normally cost more than short horizontal flues through an external wall.

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Condensate drainage

Modern condensing boilers produce condensate that must be discharged safely.

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The new boiler position must have access to:

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• An internal waste pipe.

• A suitable soil pipe.

• An external drain where permitted.

• A condensate pump where gravity drainage is not possible.

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Long external condensate pipes should be avoided or suitably protected against freezing.

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Type of floor and wall construction

Timber floors are often easier to open than concrete floors.

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Relocation costs can increase where the property has:

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• Solid concrete floors.

• Tiled finishes.

• Stone walls.

• Finished ceilings.

• Underfloor heating.

• Asbestos-containing materials.

• Limited service voids.

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The homeowner should establish whether making good is included in the boiler engineer's quotation.

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Electrical work

A relocated boiler may require:

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• A new electrical supply.

• An isolation switch.

• New thermostat wiring.

• New zone-valve connections.

• Smart-control installation.

• Alterations to the consumer unit.

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Electrical work may need to be completed by a suitably qualified electrician.

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Boiler type

A combi boiler is often simpler to move than a regular or system boiler connected to cylinders, tanks and additional controls.

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Moving a conventional boiler could affect:

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• The hot-water cylinder.

• Feed-and-expansion tanks.

• Pumps.

• Motorised valves.

• Heating zones.

• Existing pipe circulation.

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Access and working conditions

Restricted access can add time and labour.

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This may apply to boilers located in:

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• Lofts.

• Small cupboards.

• Basements.

• Roof spaces.

• Flats with limited access.

• High external walls.

• Areas requiring scaffolding.

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Additional Costs to Consider

 

The boiler relocation quotation may not include every associated item.

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Possible additional costs include:

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System cleaning

The heating system may require a chemical clean or power flush before the relocated boiler is commissioned.

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This is particularly important where the system contains sludge, corrosion or restricted pipework.

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Magnetic filter

A magnetic system filter helps collect circulating iron-oxide debris and protect the boiler.

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Current guide prices place a supplied and installed magnetic filter at approximately £150 to £225.

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New heating controls

Moving the boiler can be a good opportunity to install:

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• A programmable room thermostat.

• Smart heating controls.

• Weather compensation.

• Load compensation.

• Additional heating zones.

• Thermostatic radiator valves.

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The price will depend on the control system selected and whether new wiring is required.

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Making good

The old boiler position may be left with:

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• Pipe holes.

• An old flue opening.

• Damaged plaster.

• Missing tiles.

• Redundant electrical connections.

• Redundant gas or water pipes.

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Ask whether filling, plastering, tiling, carpentry and decorating are included.

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Scaffolding

Scaffolding may be needed for:

• Vertical flue installation.

• High external flue terminals.

• Roof work.

• Upper-floor boiler positions.

• Safe access to external pipework.

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Kitchen units and joinery

Moving a boiler during a kitchen refurbishment may involve removing or altering cupboards, worktops and boxing.

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Coordinate the boiler engineer's work with the kitchen installer before the project begins.

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How Long Does It Take to Move a Boiler?

 

Most boiler relocations take between one and two working days.

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A short move within the same room may be completed in one day. Moving the boiler to another floor, loft or distant room may take two days or longer.

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The property will generally be without heating and hot water while the system is drained and the boiler is disconnected.

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Current UK cost guidance also identifies one to two days as a typical relocation period.

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Where Can a Boiler Be Moved?

 

Subject to the manufacturer's instructions and installation requirements, boilers can commonly be installed in:

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• Kitchens.

• Utility rooms.

• Airing cupboards.

• Garages.

• Lofts.

• Bedrooms.

• Bathrooms.

• Purpose-built boiler cupboards.

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The position must provide:

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• Safe flue termination.

• Suitable condensate drainage.

• Adequate gas supply.

• Electrical connections.

• Access for servicing and repairs.

• Required clearances around the appliance.

• Protection from frost and weather.

• Suitable support for the boiler.

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A boiler should not be concealed so tightly that routine servicing or component replacement becomes difficult.

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Do I Need Planning Permission to Move a Boiler?

 

Planning permission is not normally required to move a boiler within a house.

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However, additional considerations may apply where:

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• The property is listed.

• The flue affects the external appearance of a listed building.

• The property is a flat.

• The flue passes through communal parts.

• The building is leasehold.

• Landlord or freeholder consent is required.

• The flue is being installed in an unusual or sensitive position.

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The work must comply with the relevant installation and building requirements.

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Gas-boiler work must be completed by a suitably qualified Gas Safe registered engineer.

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Moving a Boiler During an Extension or Renovation

 

Boiler relocation is often connected with:

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• Kitchen refurbishments.

• House extensions.

• Loft conversions.

• Garage conversions.

• Utility-room construction.

• Internal remodelling.

• Removing an airing cupboard.

• Creating an open-plan kitchen and dining area.

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The proposed boiler position should be agreed early in the design process.

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The project designer, heating engineer, builder, structural engineer and kitchen supplier may need to coordinate:

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• Boiler access.

• Flue positions.

• Pipe routes.

• Drainage.

• Electrical supplies.

• Kitchen units.

• Structural openings.

• Roof penetrations.

• Future servicing requirements.

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Leaving the decision until construction is underway can lead to awkward pipe routes and increased costs.

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Questions to Ask Before Accepting a Quote

 

Ask the heating engineer whether the quotation includes:

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• Disconnecting and moving the existing boiler.

• New gas pipework.

• Heating and water pipework.

• Condensate drainage.

• Flue components.

• Electrical alterations.

• Heating controls.

• System cleaning.

• Magnetic filter.

• Inhibitor.

• Commissioning.

• Warranty implications.

• Building-control notification where applicable.

• Removal of redundant pipework.

• Filling the old flue opening.

• Making good and decorating.

• Waste removal.

• VAT.

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A detailed fixed quotation makes it easier to compare installers fairly.

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Moving a Boiler Through the APN Network

 

APN Boilers helps homeowners find experienced boiler and heating professionals for:

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• Moving an existing boiler.

• Installing a new boiler in a different position.

• Boiler replacement.

• Combi-boiler conversions.

• Central-heating alterations.

• Smart-control upgrades.

• Radiator and pipework changes.

• Boiler servicing and repairs.

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Before providing a firm quotation, the installer should assess:

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• The existing boiler.

• The proposed location.

• The gas-supply route.

• The heating and water connections.

• The flue position.

• Condensate drainage.

• Electrical requirements.

• Access and working conditions.

• The age and condition of the heating system.

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This allows the installer to determine whether moving the existing appliance or replacing it represents better long-term value.

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How Much Does It Cost to Move a Boiler? The Simple Answer

 

As a general 2026 guide:

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• Minor repositioning: £300–£600.

• Move along the same wall: £500–£800.

• Move elsewhere within the same room: £600–£1,000.

• Move to another room: £800–£1,200.

• Move to another floor: £1,000–£1,500 or more.

• Move into a loft or garage: £1,000–£2,000 or more.

• Move and replace the boiler: commonly £2,500–£4,500 or more.

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The final cost depends less on the boiler's physical weight and more on the new gas, water, heating, drainage, electrical and flue connections required.

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A professional survey of the existing system and proposed boiler position is the only reliable way to establish the full cost.

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