Awarding Winning Boilers - On Finance!
- Fast Installation
- Up to 12 Year Warranty
- No Deposit finance available
- 20,000+ Satisfied Customers
Installed by Award Winning Glow Green
How It Works
What Our Customers Are Saying
Excellent value for money. Bradley installed our boiler and his colleague helped the second day with the drainage pipes, both were highly professional, friendly and efficient workers. A great overall service and I would highly recommend.
Boiler fitted next day
The Boiler was fitted the next day with no mess or fuss I was very impressed. Just to note I have been in the construction business over 40 years.
Glow green gave me a good price
Glow green gave me a good price for the boiler I wanted and installation was a week later and without problem.
Vaillant Boiler Installation
Glow green came to install my new boiler. I am so pleased with his work. Lewis is so professional, has great time keeping, friendly and very good at clearing up. Couldn’t ask for more. Thank you so much for great customer service it is appreciated. 👏🏽👏🏽👏🏽👍🏽
Excellent Engineer, did everything the way I wanted the job completed. Nothing was too much trouble. Communication was good between us and the Engineer and Company.
I found Glow Green very efficient
I found Glow Green very efficient and reliable and work carried out on time and to a high standard would not hesitate to recommend them to family and friends.
Why Customers Love Glow Green
Our boilers come with the option of a 12 year** peace of mind warranty
Spread the Cost
With a flexible payment plan including Buy Now, Pay Later and 0% APR finance*
Save an extra 20% off your new boiler in our Glow Green Boiler Sale.
Proud to be a Vaillant accredited & Worcester Bosch approved National installer
100% of our installations are audited to ensure your complete satisfaction
We are an award-winning business. Finalist for H&V national heating installer 2019
Our engineers are all carefully vetted and Gas-Safe approved
If you’re without heating, we aim to install your new boiler within 48 hours
About Combination Boilers
- What Is A Combination Boiler?
- How Does A Combination Boiler Work?
- Gas Combi Boilers
- Advantages Of A Combination Boiler
- Which? Best Buy
- Combination Boiler Models
What Is A Combination Boiler?
True to its namesake, the combination boiler is a central heating boiler and a water heater combined into one compact unit. It's an all-in-one solution that serves as both a central heating system boiler and hot water cylinder, so there are no giant tanks in your airing cupboard and no large water storage containers in your loft.A combi boiler will only heat up water when you need it, which means they are much better for the environment, and they are great for saving money on your energy bills.
How Does A Combination Boiler Work?
Almost intuitively, these heating and hot water systems react when a hot water tap is turned on, or when it detects the household is below than the preset temperature. Automatically responding by sending hot water to the required tap, or firing up the central heating, a combi boiler means hot water is available at a moments notice and at all times. It's delivered at the mains pressure, so no pump is required for a power shower.
The magic happens precisely in the heat exchanger, which is heated up by a gas burner. A heat exchanger does what its name describes - it allows heat to be exchanged between two fluids or substances, usually water or gas, without letting the substances mix together. Hot water will come tumbling out of the tap or shower, and you simply won’t believe that it was cold just moments before. The combi boiler is super efficient too as it recycles wasted heat that would otherwise be lost with a conventional boiler that emits lost heat and gases.
Gas Combi Boilers
Electric combi boiler running costs are the main sticking point when it comes to deciding between an electric or gas boiler. Gas is a much cheaper fuel to use, meaning that you could end up paying a lot more for your energy bills following an electric combi boiler installation.
Natural gas boilers are the most commonly installed heating system in the UK. As of 2020, around 80% of homes in the UK rely on gas central heating. Properties that aren’t connected to the gas network can still have a gas boiler installed too though. However, rather than natural gas, it will need to run on LPG. LPG is a natural gas alternative which is a liquid.
It's also worth noting that although a gas combi isn't quite as efficient or eco-friendly as the electric boiler, they are still A-rated for efficiency and are better for savings and the environment than say a system boiler or open vent gas boilers.
Advantages Of A Combi Boiler
Have a blast with a power shower.
Since a combi boiler doesn't require a cylinder or storage tank it releases water directly from the mains, so you can enjoy a proper non-trickle shower without needing to buy an extra pump.
Extra Living Space.
Gas combi boilers are renowned for being compact and lightweight which means there’s more space in your home for something more enjoyable. With hot water cylinders and cold water tanks out of the way, think of the exciting objects that could take their place. It might give you the opportunity to convert your loft, and your airing cupboard could just become a nice place to stand in.
When you buy a new boiler for your home, the initial cost of installing it can be pretty hefty, often being more costly than the unit itself. A combination boiler however takes much less time to install since it has everything it needs tucked away inside and less pipework. It’s simple: a shorter installation time means a smaller fee.
With other types of boiler, energy is wasted on keeping the tank of water permanently hot. Heat escapes (it always does), and the boiler has to use more energy to replace it. With a combi boiler, water is heated only when it is required, meaning barely any energy is wasted. Benefiting you and the environment.
Who is Which? Best Buy.
Which? are an leading independent consumer review platform that offers UK property owners and consumers impartial advice on an variety of products, which include boilers. They a independent you can reply on for expert reviews when buying a new boiler. Their reviews on products will be from a mixture of consumers and engineers to ensure they can give the most reliable advise.
Which – the Which? Best Buy Award, with Worcester Bosch having held that title for 10 consecutive years.
At Glow Green we supply to the top 3 ranked Which? best buy boilers (recommended) here are our top 5 best which? rated brands in the UK right now, in 2021:
- 1st Vaillant Boilers
- 2nd Worcester Bosch Combi Boilers
- 3rd Viessmann Combi Boilers
- 4th Ideal Combi Boilers
- 5th BAXI Combi Boiler
Popular Combination Boiler's
Worcester Bosch Greenstar 25i Erp
Worcester Bosch Greenstar 30i Erp
Worcester Bosch Greenstar 25kW Si Compact GB Combi ErP
Worcester Bosch Greenstar 30kW Si Compact GB Combi ErP
Worcester Bosch Greenstar 28 CDi Compact ErP
Worcester Bosch Greenstar 32 CDi Compact ErP
Worcester Bosch Greenstar 36 CDi Compact ErP
Worcester Bosch Greenstar 4000 25kW Combi
Worcester Bosch Greenstar 4000 30kW Combi
Worcester Bosch Greenstar 8000 Style 30kW Combi Black
Worcester Bosch Greenstar 8000 Style 35kW Combi Black
Worcester Bosch Greenstar 8000 Style 40kW Combi Black
Worcester Bosch Greenstar 8000 Style 45kW Combi Black
Worcester Bosch Greenstar 8000 Style 50kW Combi Black
Worcester Bosch Greenstar 8000 Style 30kW Combi White
Worcester Bosch Greenstar 8000 Style 35kW Combi White
Worcester Bosch Greenstar 8000 Style 40kW Combi White
Worcester Bosch Greenstar 8000 Style 45kW Combi White
Worcester Bosch Greenstar 8000 Style 50kW Combi White
Worcester Bosch Greenstar 8000 Life 30kW Combi
Worcester Bosch Greenstar 8000 Life 35kW Combi
Worcester Bosch Greenstar 8000 Life 40kW Combi
Worcester Bosch Greenstar 8000 Life 45kW Combi
Worcester Bosch Greenstar 8000 Life 50kW Combi
Worcester Bosch Greenstar Highflow 440CDi ErP
Worcester Bosch Greenstar Highflow 550CDi ErP
Vaillant EcoFIT Pure 825
Vaillant EcoFIT Pure 830
Vaillant EcoTEC Plus 825
Vaillant EcoTEC Plus 832
Vaillant EcoTEC Plus 835
Vaillant EcoTEC Plus 838
Vaillant EcoTEC Plus 938
Vaillant EcoTEC Exclusive 843
Vaillant EcoTEC Exclusive 835
Vaillant EcoTEC Exclusive 843
Vaillant EcoTEC Exclusive 835
Vaillant EcoTEC Exclusive 843
Vaillant EcoTEC Pro 30 H Combi A
Vaillant EcoTEC Pro 28
Vaillant EcoFit 825 Sustain
Viessmann Vitodens 050-W 29kW Combination Boiler ErP
Viessmann Vitodens 100-W 30kW Combination Boiler ErP
Viessmann Vitodens 050-W 35kW Combination Boiler ErP
Viessmann Vitodens 100-W 35kW Combination Boiler ErP
Greenstar 4000 Combi Boiler (Replacing the Greenstar 25 i and 30 i combination boiler)
The Greenstar 4000 is a brand new design to the Worcester Bosch range of combi boilers, designed to replace the best selling Greenstar i range. The Worcester Bosch 4000 offers everything the 30/ 25 i range did, but with some great improvements, including a quieter operation and a much higher hot water output. The 4000 benefits from a new, morden curved edge case, that many would say looks like a "I phone". It has a user-friendly digital display and easy to use push control buttons, a major improvement on the dated square boxes of old i range.