Glow Worm Gas Boilers Prices

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 Betacom2 Combi 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 Ultracom2 Combi 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.

Compare Glow Worm Boiler Quotes

ModelTypeDimensionsMaximum Flow RateOutputEfficiency RatingTypical Price
Betacom4 Combi-24CombiH - 740 mm
W - 418 mm
D - 300 mm		10 l/min24 kWA 90% and above£550
Betacom4 Combi 30CombiH - 740 mm
W - 418 mm
D - 300 mm		12.4 l/min30 kWA 90% and above£612
Flexicom 18sxSystemH - 700 mm
W - 390 mm
D - 280 mm		N/A18 kWA 90% and above£615.6
Essential Combi 24CombiH - 740 mm
W - 418 mm
D - 300 mm		10 l/min24 kWA 90% and above£620
Flexicom 24hxHeat OnlyH - 600 mm
W - 375 mm
D - 280 mm		N/A24 kWA 90% and above£622.8
Easicom 24CombiH - 740 mm
W - 480 mm
D - 338 mm		9.8 l/min24 kWB 86% - 90%£624
Easicom3 System 25SystemH - 740 mm
W - 418 mm
D - 300 mm		N/A25 kWA 90% and above£625
Betacom2 24CombiH - 900 mm
W - 500 mm
D - 390 mm		9.8 l/min24 kWA 90% and above£642.41
Ultracom 12hxiHeat OnlyH - 600 mm
W - 375 mm
D - 280 mm		N/A12 kWA 90% and above£649.1
Flexicom 24cxCombiH - 700 mm
W - 390 mm
D - 280 mm		9.85 l/min24 kWA 90% and above£650
Easicom 28CombiH - 740 mm
W - 480 mm
D - 338 mm		11.5 l/min28 kWB 86% - 90%£660
Essential Combi 28CombiH - 740 mm
W - 418 mm
D - 300 mm		11.7 l/min28 kWA 90% and above£660
Betacom2 28CombiH - 900 mm
W - 500 mm
D - 390 mm		11.2 l/min28 kWA 90% and above£680.06
Ultracom 15hxiHeat OnlyH - 600 mm
W - 375 mm
D - 280 mm		N/A15 kWA 90% and above£687.48
Ultimate3 Combi 30CombiH - 740 mm
W - 418 mm
D - 300 mm		12.4 l/min30 kWA 90% and above£695
Flexicom 30cxCombiH - 700 mm
W - 390 mm
D - 280 mm		12.3 l/min30 kWA 90% and above£696
Flexicom 30sxSystemH - 700 mm
W - 390 mm
D - 280 mm		N/A30 kWA 90% and above£703.2
Energy System 12SystemH - 700 mm
W - 390 mm
D - 280 mm		N/A12 kWA 90% and above£710
Ultracom 18hxiHeat OnlyH - 600 mm
W - 375 mm
D - 280 mm		N/A18 kWA 90% and above£716.78
Ultracom2 12sxiSystemH - 726 mm
W - 450 mm
D - 334 mm		N/A12 kWA 90% and above£716.84
Flexicom 30hxHeat OnlyH - 600 mm
W - 375 mm
D - 280 mm		N/A30 kWA 90% and above£719.84
Ultracom2 24cxiCombiH - 726 mm
W - 418 mm
D - 346 mm		10.4 l/min24 kWA 90% and above£738
Energy System 15SystemH - 700 mm
W - 390 mm
D - 280 mm		N/A15 kWA 90% and above£740
Ultracom 24hxiHeat OnlyH - 600 mm
W - 375 mm
D - 280 mm		N/A24 kWA 90% and above£745.82
Ultimate 30cCombiH - 740 mm
W - 418 mm
D - 338 mm		12.5 l/min30 kWB 86% - 90%£750
Energy System 18SystemH - 700 mm
W - 390 mm
D - 280 mm		N/A18 kWA 90% and above£770
Ultimate3 Combi 35CombiH - 740 mm
W - 418 mm
D - 300 mm		14.4 l/min35 kWA 90% and above£770
Energy Regular 12RegularH - 600 mm
W - 375 mm
D - 280 mm		N/A12 kWA 90% and above£780
Ultracom2 18sxiSystemH - 726 mm
W - 450 mm
D - 334 mm		N/A18 kWA 90% and above£788.84
Energy Combi 25CombiH - 700 mm
W - 390 mm
D - 280 mm		12.1 l/min25 kWA 90% and above£790
Ultracom 30hxiHeat OnlyH - 600 mm
W - 375 mm
D - 280 mm		N/A30 kWA 90% and above£795.36
Ultimate 35cCombiH - 740 mm
W - 418 mm
D - 338 mm		14.6 l/min35 kWB 86% - 90%£800
Energy Regular 15RegularH - 600 mm
W - 375 mm
D - 280 mm		N/A15 kWA 90% and above£810
Energy System 25SystemH - 700 mm
W - 390 mm
D - 280 mm		N/A25 kWA 90% and above£810
Ultimate3 System 25SystemH - 740 mm
W - 418 mm
D - 300 mm		N/A25 kWA 90% and above£810
Ultimate3 Regular 25RegularH - 600 mm
W - 375 mm
D - 280 mm		N/A25 kWA 90% and above£830
Energy Regular 18RegularH - 600 mm
W - 375 mm
D - 280 mm		N/A18 kWA 90% and above£840
Energy System 30SystemH - 700 mm
W - 390 mm
D - 280 mm		N/A30 kWA 90% and above£840
Energy Combi 30CombiH - 700 mm
W - 390 mm
D - 280 mm		14.2 l/min30 kWA 90% and above£850
Ultracom2 30sxiSystemH - 726 mm
W - 450 mm
D - 334 mm		N/A30 kWA 90% and above£857.24
Energy Regular 25RegularH - 600 mm
W - 375 mm
D - 280 mm		N/A25 kWA 90% and above£870
Ultracom2 30cxiCombiH - 726 mm
W - 418 mm
D - 346 mm		12.5 l/min30 kWA 90% and above£874.7
Flexicom 35cxCombiH - 700 mm
W - 390 mm
D - 280 mm		14.4 l/min35 kWA 90% and above£880
Easicom3 Regular 25RegularH - 600 mm
W - 375 mm
D - 280 mm		N/A25 kWA 90% and above£890
Energy Regular 30RegularH - 600 mm
W - 375 mm
D - 280 mm		N/A30 kWA 90% and above£900
Energy Combi 35CombiH - 700 mm
W - 390 mm
D - 280 mm		16.5 l/min35 kWA 90% and above£920
Ultracom2 35cxiCombiH - 726 mm
W - 418 mm
D - 346 mm		14.6 l/min35 kWA 90% and above£975
Flexicom 35hxHeat OnlyH - 600 mm
W - 375 mm
D - 280 mm		N/A35 kWA 90% and above£1003.64
Ultracom 38hxiHeat OnlyH - 600 mm
W - 375 mm
D - 280 mm		N/A38 kWA 90% and above£1213.06
Ultracom2 35 storeCombiH - 890 mm
W - 470 mm
D - 561 mm		19.1 l/min35 kWA 90% and above£1309.2
Energy 35 Store Combi 35CombiH - 890 mm
W - 470 mm
D - 561 mm		19.7 l/min35 kWA 90% and above£1555
Ultrapower 100sxi StoreSystemH - 1260 mm
W - 575 mm
D - 600 mm		12.5 l/min10 kWA 90% and above£1635.41
Ultrapower 170sxi StoreSystemH - 1520 mm
W - 575 mm
D - 600 mm		12.5 l/min17 kWA 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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