As a general rule, if your boiler is over 10 years old, it may be time to consider a replacement. Older boilers tend to become less efficient, more prone to faults, and more expensive to run. However, age isn’t the only reason to replace your boiler.

Here are common signs you might need a new boiler installation:

Frequent Breakdowns

If you're constantly calling engineers to repair your boiler, it could be more cost-effective to replace it. Frequent boiler breakdowns not only disrupt your home comfort but also add up in repair costs over time.


Higher Energy Bills

Older, inefficient boilers can use more fuel and push up your energy bills. Replacing your boiler with a modern, energy-efficient model can help lower your heating costs and reduce your carbon footprint.

Unusual Noises

Boilers making humming, vibrating, or banging sounds could have internal faults such as pump failure, airlocks, or limescale build-up. If these issues persist, a boiler replacement may be the best long-term solution.

Yellow or Discoloured Flame

Your boiler flame should always be blue. A yellow or orange flame could indicate incomplete combustion, which may be a sign of a carbon monoxide risk. This is a serious safety issue that requires urgent attention from a Gas Safe registered engineer.

Strange Smells

If your boiler gives off an unusual smell when operating, turn it off immediately and call the National Gas Emergency Line on 0800 111 999. This could indicate a gas leak, which is extremely dangerous. After the area is made safe, contact a Gas Safe engineer to inspect or replace your boiler.

Water Leaks

A leaking boiler can cause property damage and signal internal component failure. If your boiler is leaking water, especially from the body of the unit, a full boiler replacement may be necessary.

When should I replace my boiler?

Why Upgrade Your Boiler?

A reliable, energy-efficient boiler is essential for comfortable, cost-effective living. If your current system is outdated or inefficient, replacing it can offer significant long-term benefits.

✓ Lower Energy Bills
Modern boilers are up to 90% efficient, using less fuel to produce the same heat — helping you cut down on monthly energy costs.

✓ Better Home Comfort
Enjoy consistent, reliable heating and hot water, even during the coldest London winters.

✓ Reduced Carbon Footprint
Energy-efficient boilers produce fewer CO₂ emissions, making your home more environmentally friendly.

✓ Boost in Property Value
A new boiler adds to your home’s appeal, improving energy ratings — a strong selling point if you're planning to move.

Choosing a new boiler

If your current boiler has become unreliable or repeated boiler repairs have failed, it may be time to consider a full boiler replacement. Whether you're facing an emergency breakdown and need a boiler installed urgently, or you're planning ahead to ensure reliable heating for the colder months, our expert Gas Safe registered heating engineers are here to help.

We’ll Help You Choose the Right Boiler for Your Home

Selecting the right new boiler installation isn’t a one-size-fits-all decision. Our engineers will assess your home’s specific needs and help you choose the best boiler model based on a range of important factors, including:

• The size of your property

• How many people live in your home

• Your household’s hot water usage

• Any future home improvement or extension plans

• Energy efficiency goals and budget

• Current heating system compatibility
  
  

By understanding your usage habits and home layout, we ensure your new boiler provides reliable heating, improved energy efficiency, and long-term peace of mind.

Ready to get started? 

Our Boiler Installation Process

• Free Assessment : One of our Gas Safe registered engineers will assess your heating needs and recommend the best boiler for your property and budget.
  
  

• Quote: When we are assured that the proposed boiler is suitable for you and your house, we will send you a free, no-obligation quotation.
  When the quote is accepted, we will agree on an installation date and book you in.
  
  

• Safe Removal of Old Boiler: We’ll disconnect and safely remove your old boiler, disposing of it in line with environmental and safety regulations. The engineer will also protect your space by laying down dust sheets and taking care to minimise disruption.
  
  

• Professional Installation: Your new boiler will be installed according to manufacturer guidelines and current Gas Safe regulations, ensuring a safe and efficient setup.
  
  

• System Testing & Commissioning: We thoroughly test the new system to confirm everything is running smoothly and efficiently before we leave your property.

  
  

• User Demonstration: We’ll walk you through how to use your new boiler, adjust controls, and maintain it for long-lasting performance.
  
  

• Ongoing Support: Have questions after the installation? Our team is always here to help with advice and aftercare.

Why Choose us to install your new boiler?

Fixed Price

We offer fixed-priced installations so there are no hidden costs or surprises.

Response time

We offer rapid response times-often within the hour-to get your heating system up and running quickly.

Experts In The Industry

Customer Service & Aftercare

Our dedicated customer support teams are on hand to assist throughout the process.

Our Gas Safe registered engineers have extensive experience in a variety of boiler installations ensuring that we can handle any installation challenge.

Full installation by a local Gas Safe registered engineer, qualified to fit multiple boiler brands.

Local & Trusted

Our customers consistently praise our professionalism, punctuality, and quality workmanship.

5-Star Customer Experience

Frequently asked questions

How long does a boiler installation take?

Most installations are completed within one day, depending on your system’s complexity.

Can you replace a gas boiler with an electric one?

Yes, you can.
In many cases, it’s a great option for homes looking to reduce energy costs and carbon emissions. This type of switch should always be carried out by a qualified Gas Safe registered engineer, as the existing plumbing and heating system will need to be adapted to safely accommodate the new electric boiler setup.
When switching to an electric boiler, you also benefit from greater flexibility in boiler placement. Since electric boilers don’t require a flue, they can be installed in more convenient locations.

If you're considering making the switch from gas to electric, our team of experienced engineers can provide expert guidance and ensure a safe, compliant, and energy-efficient installation.

Do I need to replace radiators along with a new boiler?

No, you don’t have to replace your radiators when installing a new boiler, but many homeowners choose to do so for efficiency and long-term savings. If your radiators are old, inefficient, or showing signs of internal sludge build-up, it can be worthwhile to upgrade them at the same time as your boiler replacement.

More modern radiators have the added benefit of running more efficiently to reduce your energy bills further. Also, older radiators build-up sludge over time, which further impacts their efficiency and ability to heat up.

Newer radiators can also be more stylish and you can opt to have them built with thermostatic radiator valves, which will let you control the temperature of each individual radiator.

Do you offer warranties on new boilers?

Yes, all new boilers come with manufacturer warranties, and we provide a workmanship guarantee on installations.

Can you install a boiler in any type of home?

Yes, we install boilers in flats, houses, and commercial properties across St Albans & surroundings.

Can a new boiler save me money on heating bills?

Absolutely. If your boiler is over 10 years old, it’s likely to be far less energy-efficient than modern models, especially if it’s a non-condensing boiler. Older boilers often operate at 60–70% efficiency, meaning a large portion of the energy is wasted.

Upgrading to a modern A-rated boiler, which can reach up to 90–94% efficiency, could save you 20–35% on your annual heating bills, depending on your home’s size, insulation, and heating habits. You'll also benefit from lower emissions, better reliability, and improved heating performance.