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Glow-worm Betacom4 Combi

Betacom4 combi

The Glow-worm Betacom4 Combi is a highly efficient and great value for money gas condensing combination boiler.

Available in an output of 24kW or 30kW, the Glow-worm Betacom4 Combi is a suitable option for small to medium-sized homes with little or no loft and airing cupboard space. It is manufactured right here in the UK at the brand’s industry-leading facility in Derbyshire. If you’re looking for an efficient combination boiler that’s easy to use and has an affordable price tag, the Betacom4 could be the perfect solution.

How Much Does this Boiler Cost?

Glow-worm’s Betacom4 Combi is reasonably priced and usually costs between £550 and £612, depending on the required heat output. This is considered relatively cheap for a boiler, but you do need to add on the fitting cost as well. It’s wise to shop around and get quotes from different boiler suppliers and installers so that you can compare boiler and installation costs as this can help to save you a heap of cash.

How will I know if this Boiler is Suitable for My Home?

This boiler is a combi (or combination boiler) and doesn’t require a separate hot water storage cylinder or any tanks in the loft. Because combi boilers provide hot water and heat for radiators on demand all by themselves, they are the most popular type of boiler in the UK. Most qualified engineers will tell you that a combi boiler, such as the Betacom4 Combi, is ideal for small to medium-sized homes that don’t have high hot water requirements as it will struggle to cope with multiple taps running at the same time.

To know for sure, we suggest you seek professional advice from a Gas Safe registered engineer. A trusted heating engineer will not just recommend the right type of boiler for your home and needs but also the correct size (boiler output).

Is it a High Efficiency Boiler?

Yes. This boiler is highly efficient and has an ‘A’ ErP rating for energy efficiency. The Betacom4 Combi has a Grundfos pump to ensure low energy use, so it should help you to save energy and reduce your fuel bills. To improve boiler efficiency and performance, you can choose from a range of optional Glow-worm intelligent controls and accessories including the MiGo app-based control. The popular MiGo heating assistant control is super-smart because it not only lets you control your heating and hot water from a smartphone but it also automatically learns your energy requirements, helping to increase comfort levels and decrease your bills from the word go.

Does this Boiler have a Good Range of Controls and Features?

The Betacom4 Combi does have some good controls, such as an analogue timer, on/off and reset switches, a system pressure gauge and adjustable hot water and central heating temperature controls. It comes with a bright LCD display and an inbuilt filling loop for ease of use and servicing. This boiler also has the Grundfos pump for low energy use and a high-grade aluminium heat exchanger to guarantee reliable performance. You should be able to choose from a wide range of flue options too.

How long is the Warranty on this Boiler?

You’ll receive a 3-year parts and labour warranty as standard when you purchase the Betacom4 Combi. This can be extended to 5 years, as long as the boiler is installed by a Glow-worm Club Energy installer.

Summary of Important Information

  • Priced between £550 and £612
  • Heating output of 24kW or 30kW
  • Hot water flow rates of 10 or 12.4 litres per minute
  • Dimensions of 740mm (H) x 418mm (W) x 300 (D)
  • Uses gas as its fuel source
  • A-rated for efficiency
  • Smart compatible
  • 3-year warranty as standard

Pros and Cons

We feel that it’s important to mention that Glow-worm boilers have an average reliability rating, so it might be a good idea to look at customer reviews before purchasing this boiler. Below, you can find all the pros and cons of the Betacom4 Combi.


  • Suited to small to medium-sized homes
  • No need for separate cylinder or loft tanks
  • Choice of flue options – siting flexibility
  • Easy to use and service
  • Grundfos pump – reduces energy use and fuel bills
  • High-grade aluminium heat exchanger – reliable performance
  • Provides maximum energy efficiency – reduce fuel bills and carbon emissions
  • Compatible with a range of intelligent controls – improves efficiency and performance
  • Compatible with the MiGo app-based control – maximises efficiency, learns your energy needs and allows you to manage your heating and hot water from anywhere


  • Glow-worm boilers have an overall Which? score of 54%
  • 3-year warranty – would prefer a longer standard guarantee
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