✓ AR Heating & Gas. Servicing the North East for over 16 years.

New Boiler Installation in
Seaham

New boiler installation across Seaham and SR7 from £1,790 fitted. We install Worcester Bosch, Vaillant and Baxi, agree the price before installation and check the property, system and flue route before the job is booked.
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AR Heating & Gas
Online
Weighing up a new boiler in Seaham? Fixed price online in about a minute, no obligation. Or call 0191 540 2051
2010
Established
£1,790
New boiler from
12 yr
Warranty available
4.9★
Google rating
New boiler installation in Seaham by a Gas Safe registered engineer

What £1,790 buys, and how the install works

Our new boiler prices start at £1,790 fitted. You get the initial figure from the online quote tool, then the property and installation details are checked before the job is confirmed. The agreed installation covers the selected boiler, labour and agreed materials, removal of the old appliance, system preparation, commissioning and warranty registration. The exact warranty depends on the model selected.

If water-treatment or scale-protection equipment is appropriate for the property and boiler, we discuss that at survey stage. Water hardness varies by postcode and supply, so we do not assume every Seaham property needs the same treatment.

A straightforward like-for-like replacement is often completed in a day. Back-boiler conversions, relocations and larger system changes can take longer, and we explain that before you book. Finance through Ideal4Finance is available, subject to status.

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Choosing a boiler for a Seaham home

Seaham is about 7 miles from our base in Houghton le Spring, and the housing ranges from older colliery terraces to newer developments such as Seaham Garden Village. The right boiler depends on the property, hot-water demand, mains flow, existing system and where a compliant flue and condensate route can be installed.

Flue position and exposed properties

On more exposed properties near the coast, the outside terminal and visible fittings deserve careful consideration. At survey stage we choose a compliant, practical flue position and keep external pipework sensible rather than assuming the same layout works for every house.

Water treatment and system protection

The existing heating system needs to be suitable for the new boiler. A magnetic filter helps capture magnetic debris circulating in the heating circuit, while any scale-protection recommendation should be based on the actual water supply, appliance and manufacturer guidance. Water hardness can vary by postcode, so treatment is selected for the property rather than assumed from the town name.

Colliery terraces and back boilers

The older streets in Dawdon, Deneside and New Seaham can still have older heat-only systems or back boilers. Replacing a back boiler is a bigger job than a straightforward combi swap because the old appliance, flue arrangement and hot-water system all need to be considered. Our back boiler replacement page explains the process.

For a smaller home with one main bathroom and suitable mains flow, a combi can be a good option. Where hot-water demand is higher or mains flow is not suitable, a system boiler with a cylinder may make more sense.

Seaham Garden Village and other newer homes

Newer homes are more likely to have a modern combi already installed. A replacement in the same position can be relatively straightforward where the existing gas supply, flue and condensate route remain suitable. The survey confirms that before installation.

Condensate routing

The condensate pipe should be routed in line with manufacturer and installation requirements, with outside sections kept appropriate and protected where necessary. We agree the route before installation rather than leaving it as an afterthought.

How the install day runs

We protect the work area, isolate and remove the old appliance, prepare the system, install the new boiler and agreed controls, commission it and show you how to use it. The appliance is registered as required and the applicable manufacturer warranty is completed for you.

What comes with a new boiler in Seaham

Worcester Bosch, Vaillant and Baxi, with warranty terms confirmed for the selected model.

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Worcester Bosch
An established range we fit regularly, with the model and applicable warranty confirmed before installation.
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Vaillant
A well-established option with combi and system boilers for different property and hot-water requirements.
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Baxi
A practical range with model and warranty selected around the property and budget.
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Flue planned properly
The proposed terminal position is checked for compliance, access and the property layout.
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System protection
System preparation and suitable filtration or water treatment are agreed for the actual installation.
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Spread the cost
Finance through Ideal4Finance, subject to status.
Not sure it needs replacing yet?

A boiler with a single failed part can often be repaired for far less than a new one. We diagnose for a fixed £96 with no call out fee on top, and we will be honest if a repair is the better buy.

Boiler repair in Seaham

Where we fit boilers around Seaham

We cover SR7, including Dawdon, Deneside, Parkside, New Seaham, Seaton, Seaham Garden Village, Murton and Dalton le Dale. The town is about 7 miles from our Houghton le Spring base, so surveys and follow-up visits fit naturally into our local working area.

If your street is not named here, ring 0191 540 2051 and we will confirm.

Seaham new boiler FAQs

Straight answers about surveys, water treatment, older systems and prices.

Does living near the coast change the installation? +
The boiler itself is indoors, but on more exposed properties we pay particular attention to the external flue terminal, visible fittings and the proposed condensate route. The final layout still has to follow the manufacturer's instructions and gas-safety requirements.
Do I need a scale reducer as well as a magnetic filter? +
They do different jobs. A magnetic filter is for magnetic debris in the heating circuit. Whether additional scale protection is appropriate depends on your actual water supply, boiler and manufacturer guidance, so we confirm it for the property rather than assuming every SR7 home needs the same setup.
We have a back boiler in an older terrace. Can you replace it with a combi? +
Often yes, subject to survey. We check mains flow, gas supply, the proposed boiler position, flue route and what needs to happen to the old cylinder and tanks before recommending the new system.
How much does a new boiler cost in Seaham? +
Our fitted prices start from £1,790. Use the online quote tool for an initial fixed price, then the survey confirms the installation details before the job is booked.
Do you fit boilers at Seaham Garden Village? +
Yes. Where a modern combi is being replaced in the same position, the installation can often be straightforward, subject to the existing gas supply, flue and condensate route being suitable.
Can I pay for the boiler monthly? +
Finance is arranged through Ideal4Finance, subject to status. See our boiler finance page for current options and terms.
What warranty comes with the boiler? +
Warranty length depends on the manufacturer and model selected. We explain the applicable terms before installation and register the appliance as required.

Heating advice and guides

Have a boiler or heating question? We are here to help.

What Is the Best Boiler for a North East Home? Buying a New Boiler
October 12, 2026
The best boiler is the one sized correctly for your house and fitted properly. Here is how the four brands we are ask...
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How Long Does a Boiler Service Take? And Every Other Job, Timed Boiler Servicing
October 12, 2026
A boiler service takes about an hour. A repair can be twenty minutes or two visits. A new boiler is a day. Here is wh...
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Boiler Brands
October 4, 2026
Vaillant vs Baxi boilers compared: model choice, installed price, reliability considerations and what really matters ...
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