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Why Choose Glow Worm Boilers?

Great value easy to use, boiler for your home

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Glow Worm Boilers Installed By DDWilson

Over 80 years pedigree manufacturing heating systems

  1. 7-years guarantee on our Energy boiler range for peace of mind

  2. Supported by service team with 250 engineers and UK call centre

  3. Installed by a network of independent Glow-worm installers

Most extensive guarantee in the country with 15 years;

  1. Combis boilers

  2. Heat only boilers

  3. System boilers

  4. Heat store boilers

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New Glow Worm Boiler

1 - Combi Boilers By Glow-Worm

High-Efficiency Combi Boilers for Every Home. Combi boilers are one of the most popular types of boilers on the market because they are incredibly compact, deliver high-performance heating and hot water almost instantly, and are incredibly energy efficient. For smaller homes and apartments with up to two bedrooms and one bathroom, our super-compact 25kW boilers like our Easicom range will help you maximise your available space whilst keeping you toasty warm. Larger homes with up to four bedrooms and two bathrooms will find that our 30kW combi boilers, including our most popular Energy Combi Boiler, are the perfect match for your needs. Homes with five-plus bedrooms or increased demand for hot water, 35kW boilers such as our Energy 35 Combi won’t break a sweat - even if you do!

When you choose a Glow-worm combi boiler, you’re choosing the best for your home and your family. We are a manufacturer of high-efficiency combi and condensing boilers. In fact, we developed the technology for the very first mass-produced condensing combi boiler in the 1990s. So if you’re looking for a combination boiler, you’re in safe hands.

All of our combi, system and regular boilers are fully compliant with ‘Benchmark’. ‘Benchmark’ is a nationally recognised scheme that exists to promote the highest level of installation, commissioning and servicing of heating and hot water systems. To get started, browse our range of combi boilers below.

2 - Regular Heat Only Boilers

Efficient Heating and Hot Water for Larger Homes. For larger households with multiple bathrooms and high demand for hot water, a regular heat only boiler from Glow-worm will ensure that your needs are met, with no icy surprises along the way. Glow-worm is manufacturers of gas boilers, including our range of high-efficiency heat only boilers. We’ve been keeping households toasty and warm since 1934 and are proud to offer one of the most comprehensive guarantees around. When you choose a Glow-worm boiler, you’re choosing a product that’s reliable, energy-efficient and kind to your bank balance and the environment.

What is a Heat Only Boiler?

A heat-only boiler (sometimes called an open vent or regular boiler) provides central heating and hot water to the home via a system including your boiler, a hot water storage cylinder often installed in your airing cupboard, and a water tank in your loft.

The cold water tank is filled via your mains water supply and is heated in your hot water cylinder, so when you turn the tap or shower on, you get a steady stream of hot water. The second tank brings in cold water to maintain the levels in your central heating system. This system of storing, heating, and distributing hot water around your home means that there is always a significant volume of hot water ready to go at any given time.

3 - Sealed System Boilers For Heating And Hot Water

High-Efficiency System Boilers from Glow-worm. If you have a high demand for hot water from multiple sources at once in your home, or you have limited space in your loft, a Glow-worm system boiler will ensure that you’re never caught short.

What is a system boiler?

A system boiler provides central heating and hot water via a storage cylinder. They work like a regular or conventional boiler in that they store hot water at a temperature ready for you to use. Unlike a regular boiler, they take their water supply from the mains, so there’s no need for a separate water tank in your loft. This not only frees up valuable space in your loft but also means that we can offer a more efficient and cost-saving installation process.

We are proud to offer a wide range of high-efficiency system boilers. As with all of our gas boilers, Glow-worm system boilers are fully compliant with ‘Benchmark’, the nationally recognised scheme which promotes the highest level of installation, commissioning, and servicing of heating and hot water systems. Our guarantees are also some of the best on the market, with the Energy System Boiler having a 7-year guarantee out of the box.

History Of Glow Worm

Having Produced Reliable Heating And Energy Products For Over 80 Years, Glow-Worm Are The Pioneers Of Heating Solutions In The UK.


Glow-worm is a foundation of the UK energy industry, having originally begun producing boilers back in 1934 at the Derwent Foundry in Derbyshire. For the past 80 years, our entire drive has been focused on offering you, our customers, reliable and highly efficient products. It’s this drive that has led us right to the top as one of the leading heating manufacturers in the UK.


We pride ourselves in offering exceptional and durable energy solutions, manufacturing all our boilers at our state of the art production facilities in Belper, Derbyshire. Our revered range of products includes domestic gas boilers, such as combi, system and heat only options.

The Vaillant Group

In 2001 Glow-worm was acquired by the Vaillant Group, Europe’s second-largest heating company. Vaillant employs over 12,000 people across Europe and China, providing innovative heating, ventilation and air-conditioning technologies to hundreds and thousands of homes all over the world.

Why Choose DD Wilson?

Guild of master craftsmen

IGEM registered

Gas safe registered

Trustatraders most 5 star reviews in northwest

Most 5 star reviews in the whole in the northwest

SME 2020, 2021 and 2022 award winners best boiler installation company northwest.

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