How long does a boiler installation take?

Most straightforward replacements take 1 day, while converting to a different boiler type or relocating the boiler can take 2–3 days.

Which boiler is best for my home?

It depends on your property's size, hot water demand, and existing heating system. Combi, system, and regular boilers all suit different homes. We can discuss the best options for your home.

Do I need a Gas Safe engineer?

Yes. Gas boiler installations in the UK must be carried out by a Gas Safe registered engineer.

Will my heating be off during installation?

Usually, heating and hot water will be unavailable while the new boiler is being installed, typically for one day.

Should I install a magnetic filter?

Yes. A magnetic filter helps protect the boiler by capturing sludge and debris, improving efficiency and reliability.

Does a new boiler need servicing?

Yes. Annual servicing helps maintain efficiency, safety, and manufacturer warranty.

Boiler Installation Experts

Our expert gas safe engineers provide reliable, and efficient, installations to top brands like Vaillant, Worcester and Viessmann, with warranties up to 12 years.

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Local Heating Engineers

Our team of experienced gas engineers deliver fast, reliable, and high-quality boiler installations across London and Essex. From boiler swaps to full installations, we handle every job with precision and care - ensuring peace of mind. Count on us for trusted local solutions.

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Why Choose LHS Plumbing Services?

Industry Expertise

Our team of licensed and experienced commercial plumbers is well-versed in the complexities of commercial plumbing systems. We have successfully served a wide range of businesses, including offices, retail spaces, warehouses, hotels, hospitals, and educational institutions.

24/7 Emergency Services

Plumbing emergencies can occur at any time, disrupting your business and causing inconvenience. Our dedicated emergency response team is available 24/7 to promptly address any urgent plumbing issues and get your operations back on track.

Customised Solutions

We understand that each commercial establishment has unique plumbing requirements. Our team works closely with you to assess your needs and tailor our solutions to fit your specific budget and timeline.

Which Boiler Is Right for Your Home?

Not every property needs the same boiler. The right choice depends on the size of your home, how many bathrooms you have, and your hot water demand. Here's a quick guide:

Combi Boilers The most popular choice for smaller terraced and semi-detached homes. A combi boiler heats water on demand - no separate hot water cylinder or cold water tank needed. Compact, efficient, and quick to install. Ideal for homes with one bathroom and up to three bedrooms.

System Boilers If your Loughton property has two or more bathrooms and regular high hot water demand, a system boiler paired with an unvented hot water cylinder is often the better solution. You get mains-pressure hot water to multiple outlets simultaneously, without sacrificing efficiency.

Regular (Heat Only) Boilers Suited to larger homes with existing traditional heating setups including a F&E tank in the loft. A regular boiler works well where the existing pipework and cylinder are in good condition and the homeowner prefers not to re-presurise.

Priority Domestic Hot Water (PDHW) System Boilers An increasingly popular option for modern installations. PDHW systems prioritise hot water delivery over space heating temporarily, ensuring instant hot water without the standing heat losses of a traditional cylinder.

Boiler Installation Projects

Boiler Replacement in Chingford

Recently, our Gas Safe engineers completed a boiler replacement in Chingford (E4) after diagnosing a severely blocked primary heat exchanger inside an ageing Vaillant combi boiler. The customer had experienced ongoing heating issues, poor hot water performance, and rising energy bills. Following a full inspection, we recommended replacing the boiler rather than carrying out an expensive repair. A failed or heavily blocked heat exchanger filled with magnetite and scale is one

Viessmann System Boiler Essex: A PDHW Installation Case Study

Improving Efficiency, Control, and Performance with a Correctly Sized System Boiler Replacing an outdated fireplace back boiler with a modern heating system can present several design challenges. One recent project involved relocating the boiler from a fireplace back boiler arrangement to a first-floor cupboard. Here, we installed a Viessmann Vitodens 100-W 19kW system boiler, designed around a Priority Domestic Hot Water (PDHW) setup. Our goal was not simply to replace the e

Boiler Replacement in Woodford Green

Our team was called out to a Vaillant 637 boiler breakdown in Woodford Green, issue described - load banging when the boiler was on, causing the boiler to over heat and shut down, showing various fault codes on the interface. After inspecting the boiler it was confirmed the main heat exchanger was partially blocked and filled with magnetite, sludge and scale produced by the radiators in the system. Client had two options: Flush main heat exchanger and boiler or Replace the bo

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LATEST NEWS

Upgrading an Ideal Combi Boiler with OpenTherm Load Compensation Controls

At LHS Plumbing Services, we don't just service boilers - we help homeowners get the very best performance from their heating systems. Recently, we carried out a routine annual service in Buckhurst Hill on an Ideal combi boiler. The appliance passed all safety and performance checks, with combustion readings, gas pressures and operational tests confirming it was working correctly. Rather than simply leaving the system as it was, we discussed ways the customer could further im

Boiler Replacement in Chingford

Recently, our Gas Safe engineers completed a boiler replacement in Chingford (E4) after diagnosing a severely blocked primary heat exchanger inside an ageing Vaillant combi boiler. The customer had experienced ongoing heating issues, poor hot water performance, and rising energy bills. Following a full inspection, we recommended replacing the boiler rather than carrying out an expensive repair. A failed or heavily blocked heat exchanger filled with magnetite and scale is one

Weather Compensation Explained

If you're looking to reduce your heating bills while making your home more comfortable, weather compensation is one of the smartest upgrades you can make. Modern boilers and heat pumps are designed to work efficiently at lower temperatures, and weather compensation ensures they do exactly that. What Is Weather Compensation? Weather compensation is an intelligent heating control system that uses an outdoor temperature sensor to monitor the weather outside your property. It aut

How Does Load Compensation Work?

Load compensation in boilers is a technique that adjusts the temperature of the central heating water based on the heat requirements of a building. This is achieved by using an internal sensor to measure the difference between the current room temperature and the desired temperature set by the user. The controller then communicates with the boiler to increase or decrease its output to precisely close the gap between the current and desired temperatures. This method of control

Viessmann System Boiler Essex: A PDHW Installation Case Study

Improving Efficiency, Control, and Performance with a Correctly Sized System Boiler Replacing an outdated fireplace back boiler with a modern heating system can present several design challenges. One recent project involved relocating the boiler from a fireplace back boiler arrangement to a first-floor cupboard. Here, we installed a Viessmann Vitodens 100-W 19kW system boiler, designed around a Priority Domestic Hot Water (PDHW) setup. Our goal was not simply to replace the e

Expert Boiler Repairs by LHS Gas Safe Engineers in Chingford

This week our Gas Safe engineer attended three different boiler jobs across Chingford. From boiler repairs to emergency breakdowns, here's what we found and how the issues were resolved. Job 1 – Boiler Repair on Kings Road, Chingford Customer called us to say their boilers hot water was running hot and cold on a Worcester Bosch Greenstar CDi 32kW combi boiler. What we found Boiler temperature running into the high 90's Burner cutting out in hot water mode Hot water temperatur