Glow-worm Boilers: Compare Efficiency, Warranty & Price
Glow-worm has been warming homes across the UK since 1934 and offers a range of reliable and easy-to-install boilers which are both affordable and highly recommended by professional engineers. Glow-worm boilers run on natural gas and are available in the form of combi, regular and system models. When comparing boilers to find the most suitable model for your home, you will need to consider the output rating, efficiency, warranty and, of course, the potential cost.
Glow-worm boilers include a free warranty straight out of the box which typically varies between 3-7 years, but you often have the option to extend the warranty if the boiler is installed by one of Glow-worm’s accredited Energy Club installers. Depending on the boiler model you choose, the warranty could be extended up to 5-15 years.
- Output rating: A boiler needs to have enough power to meet the heating and hot water demands of your home. The output rating, measured in kilowatts (kW), shows the level of demand the boiler is capable of meeting. Install a boiler with an output rating that’s too low and it won’t meet demands but install one that’s too high and your energy bills could rise.
- Efficiency: A new boiler should help to lower your energy bills and the efficiency rating shows how much of the fuel used by the boiler is converted into usable energy. Some Glow-worm boilers have high efficiency ratings of 94%.
- Warranty: This is a promise from the manufacturer that they will cover the parts and/or labour in the event of certain issues arising with your boiler after the installation. The length of a warranty will vary depending on the manufacturer and model. Many Glow-worm boilers are available with lengthy warranty periods of up to 7 years.
- Price: The most important factor for many homeowners is the price and Glow-worm are one of the more budget-friendly manufacturers with many reliable units available for as little as £600 – £700.
Taking time to compare new boilers is well worthwhile. Using our Boiler Comparison Tool, you can compare up to 4 different models – just click the ‘add boiler’ symbol to add a unit to your comparison. We highly recommend including your exising boiler as part of any comparisons you make.
Compare Glow-worm combi boilers
Glow-worm combi boilers are reliable and efficient units that won’t break the bank. They’re the ideal choice for homes with a low to moderate demand for central heating and hot water with 24-27 kW models being ideal for properties with 1 bathroom and up to 10 radiators.
Compare Glow-worm regular boilers
Regular boilers are the most traditional type of heating system and need to be installed alongside a cold water storage tank, expansion vessel and hot water cylinder. The most powerful Glow-worm regular boiler has an output rating of 25 kW which will suit homes with 10-15 radiators.
|Boiler Model||kW||Efficiency||Warranty||Typical Price|
|Glow-worm Easicom₃ 25kW Regular Gas Boiler||25kw||94%||3 years||£685||VIEW|
|Glow-worm Energy Regular 12kW Gas Boiler||12kw||89.3%||7 years||£713||VIEW|
|Glow-worm Energy Regular 15kW Gas Boiler||15kw||89.3%||7 years||£780||VIEW|
|Glow-worm Energy Regular 18kW Gas Boiler||18kw||89.3%||7 years||£760||VIEW|
|Glow-worm Energy Regular 25kW Gas Boiler||25kw||89.2%||7 years||£790||VIEW|
|Glow-worm Ultimate3 25kW Regular Gas Boiler||25kw||89.6%||5 years||£725||VIEW|
|Glow-worm Energy Regular 30kW Gas Boiler||30kw||89.2%||7 years||£890||VIEW|
|Glow-worm Ultracom 24 hxi Regular Gas Boiler||24kw||88.5%||5 years||£720||VIEW|
|Glow-worm Flexicom hx 24kW Regular Gas Boiler||24kw,||88.4%||5 years||£675||VIEW|
|Glow-worm Ultimate2 Regular 25kW Regular Gas Boiler||25kw||89.3%||5 years||£870||VIEW|
|Glow-worm Ultracom 24 hxi Regular Gas Boiler||30kw||88.4%||5 years||£730||VIEW|
Compare Glow-worm system boilers
A system boiler directly heats the central heating system while also storing domestic hot water in a cylinder. This allows them to meet higher demands for hot water than a combi – great if you have multiple bathrooms. With output ratings ranging from 12 kW right up to 30 kW, there’s a suitable model for properties with less than 10 radiators to around 20. Take a look at all of the system boilers manufactured by Glow-worm to find the appropriate model for the heating and hot water demands of your property.
|Boiler Model||kW||Efficiency||Warranty||Typical Price|
|Glow-worm Energy System 12kW Gas Boiler||12kw||89.3%||7 years||£700||VIEW|
|Glow-worm Energy System 15kW Gas Boiler||15kw||89.3%||7 years||£725||VIEW|
|Glow-worm Energy System 18kW Gas Boiler||18kw||89.3%||7 years||£765||VIEW|
|Glow-worm Energy System 25kW Gas Boiler||25kw||89.3%||7 years||£785||VIEW|
|Glow-worm Energy System 30kW Gas Boiler||30kw||89.3%||7 years||£850||VIEW|
|Glow-worm Ultimate3 25kW System Gas Boiler||25kw||89.7%||5 years||£725||VIEW|
|Glow-worm Easicom3 25s System Gas Boiler||25kw||89.7%||3 years||£595||VIEW|
|Glow-worm Ultimate2 25kW System Gas Boiler||25kw||89.3%||5 years||£820||VIEW|
With Boiler Guide, you can get free quotes for the installation of a Glow-worm boiler from up to 3 Gas Safe registered engineers based in your local area.
Benefits of Glow-worm combi boilers
When the time comes to choose a new boiler, one of the first options for most modern homes is a combination boiler.
If you are considering opting for a ‘combi’ boiler, Glow-worm has a choice of options for you to consider.
With every combi boiler, you won’t need to find space for a water tank or hot water cylinder – neither of these are required with this type of system and is clearly one of the big benefits that appeals to most people. It’s an energy efficient choice too as you only heat the water you need.
- Heats your hot water as you need it so no need to wait for a whole tank to warm up
- If saving energy is important to you, a Glow-worm combi boiler ticks all the boxes
- Modern design and an established brand means that finding an engineer for installation and repair is easy
- An efficient and cost-effective choice
What’s your budget? It’s an important question when choosing a new boiler but whatever you’ve decided, you should be able to find a Glow-worm combi boiler that meets your needs. Once you’ve made your choice, the next step is to get three quotes for installation from reputable engineers. Get quotes for a new Glow-worm boiler.
Benefits of Glow-worm System Boilers
Glow-worm system boilers will heat hot water for both your central heating and a hot water cylinder. These boilers take their water supply directly from the mains to deliver a higher pressure of water; this also has the added benefit of removing the need for a feed and expansion tank in your loft .
As these boilers are designed to work alongside a hot water cylinder they are a great choice for busy households using lots of hot water at the same time. The hot water cylinder is able to store hot water to cope with a higher demand while a Combi can only supply 1 or 2 outlets at a time.
Glow-worm offer 3 ranges of system boiler to suit a variety of sizes of home and budgets:
The Ultimate₃3 and Easicom₃ system boilers are available in a 25 kW output while the Energy system boiler is available in a 12, 15, 18, 25 or 30 kW model.
Benefits of Glow-worm system boilers include:
- Bright, LCD display with easy-to-use interface
- Compact, smart design to suit modern homes
- ErP A rated for efficiency with a Grundfos modulating pump for cheaper energy bills
- Easicom₃ includes a 4 year parts and labour guarantee while the Energy and Ultimate₃ include 5 year parts and labour guarantees*
- Ultimate₃ and Easicom₃ are compatible with Glow-worm’s innovative MiGo app based control
- Wide range of flue options and accessories available
- Exceptionally quiet in operation
- Choice of outputs in the Energy range of 12, 15, 18, 25 or 30 kW
*Glow-worm warranties can be extended if your boiler is installed by one of their Club Energy installers.
New boiler prices will vary depending on which brand you choose and the type and size of boiler you need. Installation costs will also vary as each installer will provide a slightly different quote. The best way to save money on the cost of your new boiler is to compare multiple quotes. You can compare both the price and warranty included and will have more than one professional recommendation to consider.
Benefits of Glow-worm regular boilers
Many people opt for a regular boiler because of its energy efficiency credentials.
Both the Ultracom 24hxi and the Flexicom hx regular boilers from Glow-worm are highly efficient and should save you energy and cash in the long-term.
- 2-year warranty
- Wall mounted
- Different outputs to meet varying heating and hot water demands
- Also runs on LPG if preferred
- Flexicom hx is recommended by the Energy Savings Trust
Installation costs do vary so be sure to get a full quote from at least two installers in advance so you know how much your new boiler is going to cost in total. Glow-worm is certainly a cost-effective choice, and thanks to the ultra-high levels of energy efficiency these models deliver, you’ll save money on your long-term energy bills too which is great news. Get quotes for a new Glow-worm boiler.
Glow-worm boiler service
It’s important to keep your boiler in the best possible condition with an annual boiler service by a professional engineer. This will ensure the boiler can operate as efficiently as possible, keeping heating bills to a minimum, and that there are no potential safety issues to be concerned about. A boiler service is also a great way to catch and fix small repairs before they have the chance to worsen over time and cause an expensive breakdown. Find out what’s involved in an annual boiler service, why it’s so important, the benefits and how much they cost in Glow-worm Boiler Service.
Glow-worm boiler warranty
Every boiler manufacturer offers a standard warranty with their boilers which last between 1-15 years. The warranty is your insurance policy and means if a fault develops the manufacturer will resolve it within a specified time frame. Some warranties include both parts and labour while others may only cover parts. The most important thing to remember is to get your boiler serviced by a Gas Safe registered engineer every year as failing to do so is likely to invalidate your warranty. For more detail about this brand’s warranty (including the small print) take a look at Glow-worm Boiler Warranty.
Glow-worm boiler repair advice
Even the highest quality boiler can develop faults and problems as they age. Some are minor issues you may be able to handle yourself but most will need a Gas Safe registered engineer to diagnose and repair the problem. To find out if there are any common problems associated with this manufacturer you can read our guide to Glow-worm Boiler Repairs & Common Glow-worm Boiler Problems.
Need a one-off boiler repair?
Glow-worm heating controls
MiGo Smart Heating Control
The MiGo personal heating assistant enables you to remotely control your heating and hot water from an app on your smart device and can automatically learn your energy needs and incorporate internet weather compensation.
Climapro2 RF Control
The Climapro2 programmable thermostat is an easy-to-use handheld remote control which gives you control over your heating wherever you are in the home. It also enables you to programme your central heating system to suit your timetable and lifestyle.
Climapro1 Wired or Wireless Control
Climapro is a programmable room thermostat which enables you to programme your specific heating and hot water requirements for each part of every day. Climapro is available as a wireless or wired unit and can be used portably around the home.
Climastat is a simple wall mounted thermostat with a digital screen displaying the temperature clearly.
For even more simplicity, Glow-worm also manufacture an analogue 230V room thermostat which is controlled by turning a dial.