A new boiler installation typically costs between £2,500 and £4,000 supplied and fitted, and a straightforward swap can be done in a day. This guide explains the main boiler types, how the right size is chosen, what happens on installation day, and the warranties to expect. All gas work must be carried out by a Gas Safe registered engineer.
A new boiler is one of the biggest improvements you can make to your home. A modern, efficient boiler keeps your home warm, gives you reliable hot water, and can save hundreds of pounds on energy bills every year. But the process, costs, and options can feel a lot to get your head around. This guide walks you through everything you need to know before, during, and after a boiler installation, written from a working Felixstowe engineer's point of view.
Signs You Need a New Boiler
Not every home needs a new boiler today, but recognizing the signs of a failing system helps you plan ahead and avoid emergency situations.
- Age: Boilers typically last 10-15 years. If yours is older than 15 years, efficiency drops significantly and replacement becomes worth considering.
- Frequent breakdowns: If you're calling for repairs more than once a year, a new boiler may be more cost-effective than ongoing repairs.
- Rising energy bills: An ageing boiler loses efficiency. If your heating bills are climbing even though usage hasn't changed, a new high-efficiency boiler can recover the investment through savings.
- Uneven heating: Some rooms cold while others are warm, or radiators that won't heat properly, can indicate a boiler reaching the end of its life.
- Strange noises or leaks: Banging, whistling, or visible water pooling around the boiler are warning signs. Stop using the boiler and call a Gas Safe engineer immediately.
- Yellow pilot light: A healthy pilot light is blue. If it's yellow or orange, there may be a combustion problem. Get it checked by a professional.
Types of Boilers
There are three main types of boiler. Understanding the differences helps you choose the right system for your home and budget.
- Combi Boilers (Combination): The most popular choice today. A combi boiler heats your home and provides hot water on demand, without needing a separate hot water cylinder. Ideal for smaller homes and flats where space is limited. No water tank or cylinder means less maintenance and more cupboard space.
- System Boilers: These work with a hot water cylinder to store hot water, but don't need a separate water tank in the loft. Good for homes with higher hot water demand, like larger families. Offers consistent flow to multiple taps and showers simultaneously.
- Conventional Boilers (Heat Only): The traditional type. They heat water in a tank and use a separate cylinder for hot water storage. They require both a water tank and hot water cylinder, taking up space. Generally chosen only if you have an older system you're replacing.
Most homes today choose combi boilers for their efficiency, convenience, and space savings. Your installer will recommend the best type based on your home size, hot water needs, and existing pipework.
Planning a Boiler Installation?
Call Howe Heating on 07393 998344. We provide free quotes and honest advice on boiler installation across Felixstowe and Suffolk.
Call for a Free QuoteWhat to Expect During Installation
A professional boiler installation is a planned, systematic process. Here's what happens from start to finish.
- Pre-installation survey: Joby visits your home to understand your heating needs, survey your existing system, and check the property is suitable for the new boiler. This is when we recommend the right boiler for your home and give you a clear, fixed price.
- Installation day: A straightforward swap can be done in a day, while a full system change can take up to a week. The old boiler is removed safely, the pipework prepared, the new boiler fitted, and all pipes and controls connected and tested before we leave.
- Commissioning and testing: Before the job is signed off, the system is commissioned: pressure tested, safety checked, and the controls verified. We run through how to operate your new boiler, how to adjust the temperature, and what to do if anything seems off.
- Paperwork and warranty: You receive a Building Regulations notification, a Gas Safety record, and full warranty documentation, and we register the manufacturer warranty on your behalf. Keep these safely; you will need them for future servicing and any warranty claims.
We take real care to keep disruption to a minimum. Floors are protected, the mess is cleared, and we make sure you are happy with the work before we go. You can see the standard in our gallery: neat copper pipework and a magnetic system filter fitted as standard.
Cost Guide
New boiler installations with Howe Heating typically range from £2,500 to £4,000 supplied and fitted. The exact price depends on the boiler you choose, the size and layout of your heating system, and any extra work needed. Here is what tends to drive the cost.
- Boiler type and brand: A like-for-like combi swap sits at the lower end of the range. System and conventional setups, or a move to a different type of boiler, sit higher because there is more work involved.
- System changes: Moving the boiler to a new location, upgrading old pipework, or fitting a new hot water cylinder all add to the job and the price.
- Old boiler removal: Removing and disposing of your old boiler is included as part of every installation, so there is nothing to arrange separately.
- Protecting the system: A magnetic system filter is fitted as standard to keep sludge out of the new boiler and help it run reliably for years.
Always make sure a quote includes supply, installation, commissioning, and all required certificates. Howe Heating gives you a clear, fixed quote after surveying your home, with no hidden extras.
Why Choose a Gas Safe Installer
Gas work must be carried out by a Gas Safe registered engineer. This isn't optional. It's a legal requirement in the UK. Here's why it matters.
- Safety: Incorrect boiler installation can lead to carbon monoxide leaks, explosions, or fire. Gas Safe engineers are trained and qualified to install boilers safely.
- Legal requirement: Boiler installation must be done by a Gas Safe registered engineer. Non-compliant work can void your warranty, invalidate your insurance, and put you at legal risk.
- Insurance and mortgages: Most home insurance and mortgage providers require proof of Gas Safe installation and certification. If anything goes wrong, a non-certified installation may not be covered.
- Warranty protection: Manufacturer warranties require installation by a qualified engineer. DIY or unqualified installation will void your warranty completely.
- Resale value: When you sell your home, buyers will ask for boiler installation certificates. Gas Safe work protects your property value and makes selling easier.
Check that your installer displays their Gas Safe registration number before they start work. You can verify any engineer at gassaferegister.co.uk.
Frequently Asked Questions
Most boiler installations take one to two days depending on the complexity of your system and whether any additional work is needed. A simple like-for-like combi replacement might be completed in a single day, while a system boiler with a new hot water cylinder may take longer.
Yes, the water supply will need to be isolated during boiler installation. Your engineer will manage this safely. You won't have water access for a few hours, so plan accordingly. If you have a water tank in the loft, that will be drained.
Most new boilers come with a manufacturer warranty of 5-12 years depending on the brand and model. Extended warranties are also available. Warranty covers manufacturing defects, not wear and tear or damage from improper use. Keep your installation certificate and Gas Safety Certificate as proof for any warranty claims.
No. Your boiler will be switched off before installation begins. Plan the installation during a warm season if possible, or ensure you have alternative heating (portable radiators, etc.) if installing in winter.
Yes, someone should be home during the entire installation. The engineer needs access to parts of your home, and there will be times when you need to discuss options or make decisions about the work.
Your engineer will assess your home during the survey and recommend only boilers that are suitable. If your first choice isn't feasible, they'll explain why and suggest alternatives that will work. Rarely, a property may not be suitable for modern condensing boilers due to flue routing, but there's almost always a solution.
