Compare Glow Worm Gas Boilers Prices (2021)

Glow-Worm gas boilers prices range between £550 and £1789, excluding the cost of installation.

Glow-worm is amongst the leading boiler manufacturers in the UK and its boilers are highly energy efficient resulting in reduced carbon emissions and heating costs. With a strong British heritage spanning 75 years, Glow-worm also invests in renewable technologies, hot water cylinders and domestic controls. Glow-worm also received the ‘Best Buy’ award from the highly prestigious Which? consumer organisation, which demonstrates the brand’s commitment to quality, performance and value for money.

Glow-Worm Combi Boilers Prices Range – Compact, Neat & Value For Money

Combi boilers generally work by taking cold water straight from the mains supply and heating it as required, which removes the need for separate water storage tanks. Glow-worm combi boilers offer a fantastic level of high-efficiency heating performance, and the Flexicom boilers are the only range of gas boilers in the UK with a direct rear flue option. This means that you can install a Flexicom combi boiler almost anywhere. Extensive flueing options are a feature of all new Glow-worm boilers, allowing for increased flexibility when fitting. Glow-worm combi boiler prices range from £550 to £1,555 and come in various sizes with a range of flow rates and outputs.

We’ve put together a simple table that enables you to compare each Glow-worm combi boiler series:

COMBI GAS BOILER SERIES	SIZES	SIZE OF HOME	PRICE
Glow-worm Betacom₄ Combi	24 – 30kW	Small to medium-sized homes with one bathroom	£550 – £612
Glow-worm Essential Combi	24 – 28kW	Small to medium-sized homes with one bathroom	£620 – £660
Glow-worm Easicom Combi	24 – 28kW	Small to medium-sized homes with one bathroom	£627 – £660
Glow-worm Betacom₂Combi	24 – 28kW	Small to medium-sized homes with one bathroom	£642.41 – £680.06
Glow-worm Flexicom Combi	24 – 35kW	Small, medium and large-sized homes	£650 – £880
Glow-worm Ultimate₃ Combi	30 – 35kW	Medium to large-sized homes with one bathroom	£695 – £770
Glow-worm Ultracom₂Combi	24 – 35kW	Small, medium and large-sized homes	£738 – £975
Glow-worm Energy Combi	25 – 35kW	Small, medium and large-sized homes	£790 – £920
Glow-worm Energy 35 Store Combi	35kW	Large homes with more than one bathroom	£1,555

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Glow-Worm Regular Heat Only Boilers Prices Range – Traditional & Practical

Regular heat only boilers (often referred to as conventional or open vented boilers) tend to be used in more traditional central heating systems and are ideal replacements if this type of system is already installed in your home. Working on the basis of ‘heating only’, a heat only boiler requires additional storage tanks for hot and cold water. Unlike the combi boiler system, hot water flow rates tend to be higher as hot water is already stored in the hot water cylinder. This enables multiple taps to be used at the same time but it takes up more space than modern systems. Glow-worm regular heat only boilers range from £623 to £1,004 with varying outputs (depending on the size of the property).

Suitable for different lifestyle and properties, the Glow-worm regular heat only boiler range includes the following options:

HEAT ONLY GAS BOILER SERIES	SIZES	SIZE OF HOME	PRICE
Glow-worm Flexicom hx Regular	24 – 35kW	Small, medium and large-sized homes with more than one bathroom	£622.80 – £1,003.64
Glow-worm Energy Regular	12 – 30kW	Small, medium and large-sized homes with more than one bathroom	£780 – £900
Glow-worm Ultimate₃ Regular	25kW	Small and medium-sized homes with more than one bathroom	£830
Glow-worm Easicom₃ Regular	25kW	Small and medium-sized homes with more than one bathroom	£890

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Glow-Worm System Boilers Prices Range – Reliable, Neat & Quick To Install

System boilers are similar to regular heat only boilers in the sense that they require an additional hot water storage tank, however, they feed directly into the mains water supply and are completely sealed. With Glow-worm system boilers, all components are pre-wired, pre-plumbed and pre-tested for greater reliability as well as a quicker and more convenient installation. Glow-worm system boilers are highly efficient and come in a range of sizes with varying flow rates and outputs. Prices range from £625 to £1,789.

Designed with most property sizes in mind, the Glow-worm system boiler range includes:

SYSTEM GAS BOILER SERIES	SIZES	SIZE OF HOME	PRICE
Glow-worm Easicom₃ System	25kW	Small and medium-sized homes with multiple bathrooms	£625
Glow-worm Energy System	12 – 30kW	Small, medium and large-sized homes with multiple bathrooms	£710 – £840
Glow-worm Ultracom₂ sxi System	12 – 30kW	Small, medium and large-sized homes with multiple bathrooms	£716.84 – £857.24
Glow-worm Flexicom System	18 – 30kW	Small, medium and large-sized homes with multiple bathrooms	£615.60 – £703.20
Glow-worm Ultimate₃ System	25kW	Small and medium-sized homes with multiple bathrooms	£810
Ultrapower sxi Store System	10 – 17kW	Small and medium-sized homes with multiple bathrooms	£1,635.41 – £1,788.78

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Why Choose Glow-Worm?

Glow-worm has been manufacturing user-friendly boilers for UK homeowners since 1934, so the brand has been on the scene for a very long time. These days, Glow-worm is dedicated to offering customers dependable and high-efficiency products that are built at state-of-the-art production facilities in Derbyshire. As a leading boiler manufacturer and one of the first to produce a condensing boiler, it came as no shock when the brand was acquired by the incredibly popular Vaillant Group in 2001. But what do customer and engineer reviews say? To help you choose the most reliable brand of boiler, we’re going to take a look at what the nation has said about Glow-worm.

Great Customer Reviews

Over 1,500 customer reviews can be found on Trustpilot, one of the world’s most popular review platforms. Glow-worm has achieved 4 out of 5 stars overall, with 74% of reviewers rating the brand and its boilers as excellent. This is a pretty good score and should leave you feeling confident about the quality and reliability of Glow-worm boilers. Negative feedback is very low, with only 4% of people leaving a bad or average review and just 2% rating their experience as poor. Having taken a closer look at the feedback from verified orders, it seems as though most people are more than satisfied with their products and the brand’s level of service.

Average Which? Score

After reading mostly positive reviews on Trustpilot, we’re surprised to learn that Glow-worm has an overall Which? score of 54%. This means that the brand hasn’t scored as high as some others, such as Viessmann and Worcester Bosch. Glow-worm achieved 3 out of 5 stars for every category except for the availability of spares and parts, which they were awarded 4 stars. Although the scores could be better, Glow-worm does offer affordable mid-range boilers that come with extended warranty options.

Below, you can find the brand data results for Glow-worm boilers, which we sourced from the Which? website.

Overal Score	54%
Reliabiliy	⭐️⭐️⭐️
Customer Score	⭐️⭐️⭐️
Engineer Recommendation	⭐️⭐️⭐️
Build Quality	⭐️⭐️⭐️
Availability of Parts and Spares	⭐️⭐️⭐️⭐️
Ease of fixing a fault	⭐️⭐️⭐️
Ease of Servicing	⭐️⭐️⭐️

Based on responses from a May 2018 survey of 11,571 Which? members about their boilers.

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Show:

Model	Type	Dimensions	Maximum Flow Rate	Output	Efficiency Rating	Typical Price
Betacom4 Combi-24	Combi	H - 740 mm W - 418 mm D - 300 mm	10 l/min	24 kW	A 90% and above	£550
Betacom4 Combi 30	Combi	H - 740 mm W - 418 mm D - 300 mm	12.4 l/min	30 kW	A 90% and above	£612
Flexicom 18sx	System	H - 700 mm W - 390 mm D - 280 mm	N/A	18 kW	A 90% and above	£615.6
Essential Combi 24	Combi	H - 740 mm W - 418 mm D - 300 mm	10 l/min	24 kW	A 90% and above	£620
Flexicom 24hx	Heat Only	H - 600 mm W - 375 mm D - 280 mm	N/A	24 kW	A 90% and above	£622.8
Easicom 24	Combi	H - 740 mm W - 480 mm D - 338 mm	9.8 l/min	24 kW	B 86% - 90%	£624
Easicom3 System 25	System	H - 740 mm W - 418 mm D - 300 mm	N/A	25 kW	A 90% and above	£625
Betacom₂ 24	Combi	H - 900 mm W - 500 mm D - 390 mm	9.8 l/min	24 kW	A 90% and above	£642.41
Ultracom 12hxi	Heat Only	H - 600 mm W - 375 mm D - 280 mm	N/A	12 kW	A 90% and above	£649.1
Flexicom 24cx	Combi	H - 700 mm W - 390 mm D - 280 mm	9.85 l/min	24 kW	A 90% and above	£650
Easicom 28	Combi	H - 740 mm W - 480 mm D - 338 mm	11.5 l/min	28 kW	B 86% - 90%	£660
Essential Combi 28	Combi	H - 740 mm W - 418 mm D - 300 mm	11.7 l/min	28 kW	A 90% and above	£660
Betacom₂ 28	Combi	H - 900 mm W - 500 mm D - 390 mm	11.2 l/min	28 kW	A 90% and above	£680.06
Ultracom 15hxi	Heat Only	H - 600 mm W - 375 mm D - 280 mm	N/A	15 kW	A 90% and above	£687.48
Ultimate3 Combi 30	Combi	H - 740 mm W - 418 mm D - 300 mm	12.4 l/min	30 kW	A 90% and above	£695
Flexicom 30cx	Combi	H - 700 mm W - 390 mm D - 280 mm	12.3 l/min	30 kW	A 90% and above	£696
Flexicom 30sx	System	H - 700 mm W - 390 mm D - 280 mm	N/A	30 kW	A 90% and above	£703.2
Energy System 12	System	H - 700 mm W - 390 mm D - 280 mm	N/A	12 kW	A 90% and above	£710
Ultracom 18hxi	Heat Only	H - 600 mm W - 375 mm D - 280 mm	N/A	18 kW	A 90% and above	£716.78
Ultracom₂ 12sxi	System	H - 726 mm W - 450 mm D - 334 mm	N/A	12 kW	A 90% and above	£716.84
Flexicom 30hx	Heat Only	H - 600 mm W - 375 mm D - 280 mm	N/A	30 kW	A 90% and above	£719.84
Ultracom₂ 24cxi	Combi	H - 726 mm W - 418 mm D - 346 mm	10.4 l/min	24 kW	A 90% and above	£738
Energy System 15	System	H - 700 mm W - 390 mm D - 280 mm	N/A	15 kW	A 90% and above	£740
Ultracom 24hxi	Heat Only	H - 600 mm W - 375 mm D - 280 mm	N/A	24 kW	A 90% and above	£745.82
Ultimate 30c	Combi	H - 740 mm W - 418 mm D - 338 mm	12.5 l/min	30 kW	B 86% - 90%	£750
Energy System 18	System	H - 700 mm W - 390 mm D - 280 mm	N/A	18 kW	A 90% and above	£770
Ultimate3 Combi 35	Combi	H - 740 mm W - 418 mm D - 300 mm	14.4 l/min	35 kW	A 90% and above	£770
Energy Regular 12	Regular	H - 600 mm W - 375 mm D - 280 mm	N/A	12 kW	A 90% and above	£780
Ultracom₂ 18sxi	System	H - 726 mm W - 450 mm D - 334 mm	N/A	18 kW	A 90% and above	£788.84
Energy Combi 25	Combi	H - 700 mm W - 390 mm D - 280 mm	12.1 l/min	25 kW	A 90% and above	£790
Ultracom 30hxi	Heat Only	H - 600 mm W - 375 mm D - 280 mm	N/A	30 kW	A 90% and above	£795.36
Ultimate 35c	Combi	H - 740 mm W - 418 mm D - 338 mm	14.6 l/min	35 kW	B 86% - 90%	£800
Energy Regular 15	Regular	H - 600 mm W - 375 mm D - 280 mm	N/A	15 kW	A 90% and above	£810
Energy System 25	System	H - 700 mm W - 390 mm D - 280 mm	N/A	25 kW	A 90% and above	£810
Ultimate3 System 25	System	H - 740 mm W - 418 mm D - 300 mm	N/A	25 kW	A 90% and above	£810
Ultimate3 Regular 25	Regular	H - 600 mm W - 375 mm D - 280 mm	N/A	25 kW	A 90% and above	£830
Energy Regular 18	Regular	H - 600 mm W - 375 mm D - 280 mm	N/A	18 kW	A 90% and above	£840
Energy System 30	System	H - 700 mm W - 390 mm D - 280 mm	N/A	30 kW	A 90% and above	£840
Energy Combi 30	Combi	H - 700 mm W - 390 mm D - 280 mm	14.2 l/min	30 kW	A 90% and above	£850
Ultracom₂ 30sxi	System	H - 726 mm W - 450 mm D - 334 mm	N/A	30 kW	A 90% and above	£857.24
Energy Regular 25	Regular	H - 600 mm W - 375 mm D - 280 mm	N/A	25 kW	A 90% and above	£870
Ultracom₂ 30cxi	Combi	H - 726 mm W - 418 mm D - 346 mm	12.5 l/min	30 kW	A 90% and above	£874.7
Flexicom 35cx	Combi	H - 700 mm W - 390 mm D - 280 mm	14.4 l/min	35 kW	A 90% and above	£880
Easicom3 Regular 25	Regular	H - 600 mm W - 375 mm D - 280 mm	N/A	25 kW	A 90% and above	£890
Energy Regular 30	Regular	H - 600 mm W - 375 mm D - 280 mm	N/A	30 kW	A 90% and above	£900
Energy Combi 35	Combi	H - 700 mm W - 390 mm D - 280 mm	16.5 l/min	35 kW	A 90% and above	£920
Ultracom₂ 35cxi	Combi	H - 726 mm W - 418 mm D - 346 mm	14.6 l/min	35 kW	A 90% and above	£975
Flexicom 35hx	Heat Only	H - 600 mm W - 375 mm D - 280 mm	N/A	35 kW	A 90% and above	£1003.64
Ultracom 38hxi	Heat Only	H - 600 mm W - 375 mm D - 280 mm	N/A	38 kW	A 90% and above	£1213.06
Ultracom₂ 35 store	Combi	H - 890 mm W - 470 mm D - 561 mm	19.1 l/min	35 kW	A 90% and above	£1309.2
Energy 35 Store Combi 35	Combi	H - 890 mm W - 470 mm D - 561 mm	19.7 l/min	35 kW	A 90% and above	£1555
Ultrapower 100sxi Store	System	H - 1260 mm W - 575 mm D - 600 mm	12.5 l/min	10 kW	A 90% and above	£1635.41
Ultrapower 170sxi Store	System	H - 1520 mm W - 575 mm D - 600 mm	12.5 l/min	17 kW	A 90% and above	£1788.78

(average prices ascending and including VAT)

As for getting the best competitive boiler installation price and service, you will need to shop around. We recommend getting a quote from a national installer and a local boiler installer. Compare them on the cost of the boiler and the cost of installation. Average installation costs are between £1,500 – £1,800. Comparing Glow Worm gas boilers prices could save you hundreds of pounds.

Other factors to consider include flexibility of when your installer can install your new boiler and their safety record. Today all boiler installations are done by Gas Safe Registered engineers. This ensures it’s done safely and legally.

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