Eco Happy (Solar Expert)

Published February 8, 2024

Are you in search of an efficient and reliable boiler for your home? Look no further, Glow Worm boilers offer a range of boiler types to cater to various household needs and preferences, ensuring optimal performance and energy savings.

In this post, we will delve into the different types of Glow Worm boilers, their energy efficiency, installation process, warranty, and customer reviews. By the end, you’ll have a much better understanding of why Glow Worm boilers might be the perfect choice for your home heating system.

Glow-Worm Boilers – Overview

  • Glow Worm Boilers provide a range of gas boilers, from combi to regular models, with up to 10-year warranties and 90% efficiency.
  • Customers rate Glow Worm highly for performance, energy savings & value for money.
  • Prices are competitive compared to market leaders & feature smart controls compatibility.

Types of Glow Worm Boilers

You might find choosing and installing the right type of boiler to be difficult but don’t worry, as Glow Worm offers everything from a system boiler to a combi boiler.

Like any boiler brand, Glow Worm have a range of boiler types that suit the needs of different homeowners so that you are able to get a boiler that fits your property with ease.

Glow Worm provides gas boilers in various forms, such as combi, system, and regular boilers, catering to different household needs and preferences. The most popular boiler range offered by Glow Worm is their combi boiler range, which is the most prevalent type of boiler in the UK.

Each boiler type is designed with specific features and demands to ensure efficient heating and hot water supply, making it easier for you to find the right boiler for your home.

We’ll examine the various boiler types and their advantages for different types of homes.

Glowworm Combi Boilers

Glowworm Combi Boilers are an ideal option for smaller homes with good water pressure, as they are:

  • Compact and efficient
  • Provide on-demand hot water and heating
  • Require no additional hot water storage tank, thereby optimising space and facilitating installation
  • Supply instant hot water and heating

With an output range of 30-35 kW and over 90% efficiency, Glow Worm Combi Boilers are an excellent choice for homeowners seeking convenience and high efficiency in a compact boiler.

Glow-Worm System Boilers

Glow-Worm System Boilers, on the other hand, are ideal for larger homes with multiple bathrooms, providing a steady supply of hot water through a separate hot water cylinder and efficiently supplying hot water.

These boilers have an output range of 12kW – 30kW and come in three models: Energy System, Easycom3 System, and Ultimate3 System.

Priced between £750 and £1,000+, depending on installation, Glow Worm’s system boilers offer efficient solutions for households that require simultaneous access to hot water from multiple taps.

Glow Worm Regular Boilers

For larger homes with a cold water feed tank and multiple radiators, Glowworm regular boilers are a suitable choice. A cold water tank is needed in the loft for these boilers. Hot water needs to be stored in an airing cupboard.

Glow-Worm’s regular boiler range consists of the Energy Regular, Easicom3 Regular, and Ultimate3 Regular, with outputs ranging from 12kW to 30kW. To keep your kitchen cupboard organised, consider storing your boiler’s instruction manual and maintenance records in a dedicated folder.

With a cost between £830 and £1,200+, based on installation, Glow Worm’s regular boilers offer a reliable heating solution for properties with multiple radiators.

Glow Worm Energy Efficiency and Savings

You are probably wondering what kind of energy efficiency these boilers have, as almost all boilers are heavily energy efficient these days.

Being as environmentally friendly as possible and having an energy-efficient home will only benefit you and your home, so it is a big part of choosing a new boiler.

Glow Worm boilers are highly regarded for their energy efficiency, which translates to potential savings on energy bills. Each model of Glow Worm boilers is rated as Energy-related Products (ErP) A, ensuring that you make an economical choice when selecting a boiler for your home.

In addition to their energy-efficient performance, Glow Worm boilers provide users with various heating controls that allow them to manage their heating more effectively, minimise energy waste, and lower their heating costs.

We’ll outline how to optimise efficiency with Glow Worm boilers and delve into their smart controls and connectivity features.

Maximising Efficiency with Glow Worm

Annual servicing of your Glow Worm boiler is necessary for maintaining peak performance and efficiency. Regular servicing can yield numerous efficiency benefits, including improved performance, enhanced energy efficiency, cost savings, and improved safety.

Additionally, Glow Worm boilers are compatible with various accessories, such as Plume Management Kit accessories, flue support clips, and boiler controls, that can further enhance the boiler’s efficiency.

Smart Controls and Connectivity

Glow Worm boilers offer the option of utilising industry-leading smart thermostats, such as Google Nest or Hive, along with the Glow Worm Wireless Outdoor Sensor for better energy management and cost savings.

The Nest thermostat offers:

  • Precision temperature control
  • A personalised schedule tailored to your energy habits
  • Optimisation of the heating system
  • Reduction of energy consumption
  • Lower energy bills when used with Glow Worm boilers.

Glow-Worm Boiler Installation

For those worrying about installation, you can ease your mind over the fact that a qualified Gas-Safe engineer has to fit gas boilers by law.

When it comes to Glow-Worm Boiler Installation, several factors should be considered, such as the appropriate boiler type and size for your home, the installation costs, and selecting a Gas Safe registered engineer. Obtaining at least three quotes on the boiler and installation allows you to compare prices and save money.

We’ll examine the installation costs of Glowworm boilers and the significance of opting for a Gas Safe registered engineer for the setup procedure.

Installation Costs of Glowworm Boilers

The starting price for Glow Worm Boiler Installation is approximately £1,850, including installation, components, and guarantees. Installation costs vary depending on factors such as boiler type, output, and location.

For instance, the installation cost of Glowworm System Boilers is generally similar to that of Regular Boilers, with prices ranging from £600 to £900, depending on the model and installation requirements. Remember to consider the installation cost when buying a Glowworm boiler, as this expense isn’t usually included in the boiler’s price and can fluctuate based on your location.

Glow Worm Boiler Warranty

Glow Worm Boiler Warranty ranges from 5 to 10 years, depending on the model, along with Glow Worm offering a 10-year guarantee.

However, to be eligible for the warranty, homeowners must register the boiler through Club Energy. They must also use a Glow Worm Power Filter. You must register your Glow Worm guarantee within 30 days following the boiler installation to secure coverage.

We’ll examine the necessity of keeping the Glow Worm boiler warranty valid and the advantages it provides.

Glow-Worm Reviews

Glow-Worm Reviews highlight the brand’s reputation for reliability, efficiency, and customer satisfaction, with an average rating of 4.6 stars out of 5. According to, Glow Worm boilers have a customer score of 74%, while Trustpilot has given them an average review score of 4.6, with most consumers rating them as ‘excellent’.

We’ll delve further into the customer satisfaction ratings and feedback.

Satisfaction Rating

Glow Worm boilers generally receive positive customer satisfaction ratings, with an average review score of 4.6 on Trustpilot. Customers often praise the performance of Glow Worm boilers, appreciating their efficiency and ease of use.

Furthermore, customers find Glow Worm boilers equipped with an aluminium heat exchanger to offer great value for money, making them a popular choice among homeowners seeking an economical heating solution.

Comparing Glow Worm to Competitors

Comparing Glow Worm to Competitors involves examining price, features, and performance against other leading boiler brands, such as Worcester Bosch and Ideal Logic Plus. Glow Worm boilers are priced competitively, offering a range of options for various budgets and requirements.

We’ll contrast the price and features of Glow Worm boilers with those of their competitors, emphasising their advantages in energy efficiency, quiet operation, and compatibility with smart controls.

Price Comparison with Market Leaders

When comparing prices with market leaders such as Worcester Bosch, Baxi, Vaillant, and Ideal Logic Plus, Glow Worm boilers are competitively priced, offering a range of options to suit various budgets and requirements.

The price range for Glow Worm combi boilers typically falls between £750 and £1,600, while the prices for competitors can range from £550 to £1,580. This competitive pricing makes Glow Worm boilers an appealing choice for homeowners seeking an efficient and reliable heating solution.

Feature-by-Feature Breakdown

A feature-by-feature breakdown of Glow Worm boilers against competitors highlights their strengths in energy efficiency, quiet operation, and smart control compatibility. Glow Worm boilers are rated highly in terms of energy efficiency for boilers, making them an economical choice when compared to other options.

While there is no available data that compares the noise level of Glow Worm boilers to other brands, modern condensing combi boilers typically have noise levels ranging from 40 to 60 decibels, similar to the sound of moderate rainfall.

Furthermore, Glow Worm boilers boast compatibility with many mainstream smart and standard heating controls, including those from:

  • Worcester
  • Vaillant
  • Baxi
  • Viessmann

Glowworm Boilers – Final Thoughts

In summary, Glow Worm boilers offer a range of boiler types, including combi, system, and regular boilers, catering to various household needs and preferences. With a focus on energy efficiency and potential savings on energy bills, Glow Worm boilers provide reliable performance and customer satisfaction.

If you are a homeowner who is looking for a new boiler, then a Glow Worm boiler is definitely an option to consider.

When compared to competitors, Glow Worm boilers are competitively priced and boast a range of features that make them a popular choice among homeowners.

By considering factors such as boiler type, energy efficiency, installation costs, warranty, and customer reviews, you can make an informed decision when choosing a Glow Worm boiler for your home heating system.

With a Glow Worm boiler, you can enjoy the comfort and peace of mind that comes with a reliable and efficient heating solution.


Are glow worms good boilers?

Glow-worm boilers are reliable and energy efficient, making them a good choice for homes with multiple bathrooms. Their ErP rating of ‘A’ ensures the highest quality and performance, making them a great option to keep your home warm.

How long will a Glow-worm boiler last?

A Glow-worm boiler can be expected to last between 10-15 years from installation.

Are Glow-worm as good as Vaillant?

Glow-worm boilers provide excellent reliability at an affordable price, making them a strong competitor to Vaillant’s highly efficient models.

What types of boilers does Glow Worm offer?

Glow Worm offers a variety of gas boilers, including combi, system, and regular models, to meet various household needs.

How energy-efficient are Glow Worm boilers?

Glow Worm boilers are highly energy-efficient, rated as ErP A, and can help reduce energy bills significantly.

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