Envolve Logo


Upgrade to a more efficient boiler with Bambu Heating and significantly reduce your energy bills.
By your side with every step!
Envolve Eagle: Energy Assessment Goals Laterally Explained

Why you should Upgrade your Boiler?

Over half the money you spend on energy each year is spent on heating and hot water – so upgrading your boiler to a more efficient model or system can make a huge difference to your bills.

All modern, well-maintained boilers burn their fuel efficiently, but they inevitably lose some heat in the hot gases that escape up the flue (a pipe used to extract fumes and supply fresh air to the boiler).

Modern boilers are more efficient than older boilers for several reasons, but their main advantage is that they are 'condensing'. A condensing boiler recovers more heat from the exhaust flue gas and uses it to heat the central heating water, making it more efficient than older boilers.

It is recommended that you upgrade your boiler around every 12 years – do you know how old your boiler is?

Things to consider

If it's time to change your boiler, or if you're thinking ahead for when it needs to be replaced, you will need to decide what type of heating system is right for you and your property. Now might be the right time to switch to a low or zero carbon emission heating system.

As part of the UK Government's plan to reach net zero carbon emissions by 2050, fossil fuel heating systems are likely to be phased out over time. This will start with a ban on gas and oil boilers in new homes from 2025, and we expect to see more and more existing homes switch to a low carbon heating system, such as a heat pump.

There are several things to consider when deciding what type of heating system is right for you:

Fuel Type

If you have a mains gas connection, a modern, condensing gas boiler has typically the lowest running costs to provide heating and hot water. On average, gas is currently the cheapest heating fuel per kWh, compared to oil, electricity, LPG and house coal.

If you are looking to lower your carbon emissions, you should perhaps consider a form of low carbon heating solutions such as a heat pump, which could also reduce your running costs depending on the type of system and fuel you're replacing it with.

Boiler Type

Gas and oil boilers are either 'system' boilers, which have a separate hot water cylinder to store hot water, or 'combi' boilers, which heat hot water on demand and don't require a hot water cylinder.

A system boiler is more efficient than a combi boiler at producing hot water, however heat is lost from the hot water cylinder over time. A combi boiler can be more efficient overall, although this depends on several factors such as how many people there are in the property and whether you are likely to install solar panels in the future. Having a hot water cylinder allows you to store energy from a solar system - if you are not able to install solar panels then this might influence your decision.

Choosing the right boiler for you will depend on different things including:

Your hot water usage. Large families using lots of hot water are likely to be better off with a system boiler, whereas smaller households using less hot water may be better off with a combi boiler.

Space in your home. Combi boilers don't need hot water cylinders, and therefore require less space.

Compatibility with solar water heating. If you're thinking of installing solar water heating, it's simpler for them to work with system boilers, although combi boilers can be adapted too.

Being heat pump ready. Most heat pumps work with a hot water cylinder, so if you get rid of your existing cylinder and fit a combi boiler, keep in mind that the cylinder may need to be put back in if you switch to a heat pump in the future.

Costs and Savings

Replace a gas boiler

The cost of replacing a gas boiler will vary, but a typical replacement plus thermostatic radiator valves will cost about £4,000.

Replacing an oil boiler

The cost of replacing a oil boiler will vary, but a typical replacement plus thermostatic radiator valves will cost about £4,700.

How to identify condensing boilers?

Since 2005, virtually all gas boilers that have been fitted in the UK are more efficient, condensing boilers.

Your boiler will be a condensing boiler if:

  • The flue is made of plastic. If it is made of metal, it's unlikely to be a condensing boiler.
  • The boiler has a plastic pipe coming out of the bottom, through the wall and into a drain.
  • if it's a gas or LPG boiler that was installed after 2005, or an oil boiler installed after 2007.
Apply Today
You may be qualify for funding
Envolve Logo Icon

Have a warmer home and save money on your energy bills

Check your eligibility

If you want to talk to someone about a fully funded install*, the process is simple. Just fill out the form below and click the Submit form button.


Your submission has been received! A member of the Envolve team will be in touch with you shortly.
Oops! Something went wrong while submitting the form.
We’ll assess the details and get back to you as soon as we can to talk through the grant application process. Or alternatively, call us on 01482 298333

*Funding levels are subject to survey.

Champion Level Support with Bambu Heating Co Ltd

Bambu Eco Plan, Ideal Esprit £1650.00
Bambu Bronze Pacakge Alpha E-Tech Boiler. £29.99 per month with BeWarm
Bambu Silver Package. Ideal Logic £34.98 per month with BeWarm
Bambu Titanium Package Viessmann Vitodens 050-W. £35.98 per month with Be Warm
Bambu Gold Package. Ideal Vogue Max. £36.98 per month with BeWarm
Bambu Platinum Package. Worcester Greenstar 8000. £37.98 per month with BeWarm
Bambu Heating Co Ltd Logo
Upgrade to an energy efficient boiler today! A range of packages and options available to suit any type of budget.
Visit Bambu
Envolve Logo
Service goes to the heart of our offering as a business. From our initial design and consultation to our award-winning installation and aftercare, we focus on delivering a quality solution on time and budget.
Our legacy in renewables means our projects are more efficient. We deliver expert solutions based on many years of experience. This experience means we can offer clients technically superior solutions that enhance the benefits of renewables.
All of our renewable energy services are focused on results and meeting the best possible heating requirements. Our knowledge of the full spectrum of solutions means we can deliver the best possible renewable energy outcome.
Whether you are a homeowner or running a business, installing renewable energy is not an investment taken lightly. That’s why we always put excellent quality and customer service delivered with integrity at the forefront of our business.
For us, being a socially responsible company goes hand in hand with being successful. We are genuinely passionate about creating more opportunities for young people in Hull and East Riding. Every year, a portion of our profits are donated to charities both here and abroad.
Our environment policy means we constantly work to significantly reduce our environmental impact and promote care for the environment through our best practices, products and services.

Head Office

Envolve Ltd
Fir Trees
1115 Hessle Road

Opening Times

Friday: 8am to 4pm
Saturday: 9am to 1pm
Sunday: Closed
Monday - Thursday: 8am to 5pm

Registration Details

MCS Registration Number: NIC600467
RECC Membership Number: 00075998
Company Reg: 09772644
VAT: 226252037
Copyright © 2024 Envolve Ltd. All rights reserved.