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Energy LPG combi boiler
FREE 7 year guarantee out of the box
- Cupboard fit
- High efficiency, modulating Grundfos pump
- High quality, automotive grade, aluminium heat exchanger
- FREE 7 year guarantee out of the box with option to extend*
Hydracyl-HP
Cylinder range designed especially for Heat Pumps
- 25 year guarantee for the main cylinder
- Easy wipe clean surfaces
- Can produce a flow temperature reaching 63°C making heat up times even better
- Typical heat up are as quick as 39 mins
- Maximum performance with minimum fuel costs
Energy LPG combi boiler
ErP A rated small combi boiler
- Cupboard fit
- Highly efficient for lower running costs
- Instant hot water supply
- FREE 7 year guarantee out of the box with option to extend*
Outdoor Weather Sensor
- Wired weather compensation sensor
- Simple and discreet
- Room temperature
Smart Wiring Centre 2
Intelligent wiring centre
- Allows Glow-worm intelligent controls to be used with Ultracom and Flexicom heat only and system appliances
- Can control up to two heating zones and one domestic hot water zone
- Simple colour-coded connectors for easy wiring and installation*
Optiflue
Passive Flue Gas Heat Recovery System by Glow-worm
- Improves hot water efficiency
- Increases boiler efficiency
- Reduces bills
- Easily fitted
Climapro₂ RF Control
Climapro₂ RF
- Two channel wireless programmable room thermostat
- Backlit display provides advanced user control and functionality
- Capable of room and weather compensation*
- Simple to use handheld unit
Wireless Outdoor Sensor
- Wireless weather compensation sensor using inbuilt PV cells
- Enables weather compensation when paired with Climapro₂ RF & Climapro₁ RF
- Works on indirect sunlight which re-charges the small PV cells
- Simple and quick to install
230V room thermostat
- Easy to use
- Simple analogue control of room temperature
- Compatible with all Glow-worm boilers with the exception of Ultracom₂ 35 store
Climastat room thermostat
- Easy to use
- Extra low voltage
- Simple & discreet 2 wire connection
- Polarity not important
Plumber and Trade FAQs
At Glow-worm we are committed to help our customers with any questions they may have about our products or heating systems.
If you have any further questions please contact us.
Boiler size calculator
Which Glow-worm boiler is right for your home?
We know that trying to find the right boiler for your property is a difficult thing to do, so we have designed this boiler size calculator to help you find the boiler best suited for your home. Once you have submitted a few details about your property and the amount of occupants currently living there, our calculator will give you a suggested heating appliance for your home. If you are happy with the suggestion that has been given to you, feel free to get in touch with a local installer through...
PHEX Chelsea 2018
The Glow-worm team is proud to be exhibiting at PHEX Chelsea 2018 on 14th and 15th of November at Stamford Bridge Stadium in Chelsea, London. Glow-worm will be on stand 82 in the main hall as well as exhibiting in the HPS suite. The talk of the show will be the great guarantee offers that now range from five to 10 years for boiler installations registered on the Glow-worm loyalty programme, Club Energy. Alice Woolley, Marketing Director for the Glow-worm brand said, “PHEX Chelsea is always a gr...
Conditions for Use
Glow-worm is a trading name of the Vaillant Group, which includes Vaillant GmbH and Vaillant Group UK Limited. Vaillant will adequately endeavor to ensure that this website will contain exact and valid information. We however do not assume liability for or guarantee the up-to datedness, correctness and completeness of the information made available or the suitability of this information for a specific purpose. All information is made available “as it is”. Vaillant does not assume the responsibi...
Fault Finding Codes
Fault finding codes for the Ultracom cxi range
Fault finding codes for the Ultracom cxi range Codes Description F1 Ignition fault F3 Fan unable to reach ignition speed F4 Ignition fault F5 Overheat Fault F6 Central heating flow thermistor F9 Water pressure sensor fault, blocked flow filter or pump fault F10 Central return flow thermistor F11 Main board connection fault F13 PCB memory or sensing fault F14 Gas valve control defective F15 E-bus voltage failure F22 Low water pressure or ignition temperature rise too slow F25 Circulation fault F...
Fault Finding Codes
Fault finding codes for the Flexicom hx range
Fault finding codes for the Flexicom hx range Codes Description F1 Ignition fault F3 Fan unable to reach ignition speed F4 Ignition fault F5 Overheat Fault F6 Central heating flow thermistor F9 Low water pressure Sensor F10 Central return flow thermistor F11 Flow and or return thermistor fault F13 PCB memory or sensing fault F14 Gas valve control defective F15 E-bus voltage failure F22 Low water pressure or ignition temperature rise too slow F25 Circulation fault F43 Generic error F70 Software ...
Vaillant GmbH Modern Slavery Statement 2019
The UK Modern Slavery Act 2015 came into effect on 29th October 2015. The law requires manufacturers and retailers doing business in the UK which supply goods or services and have an annual turnover exceeding £36 million to disclose information regarding their policies to eradicate slavery and human trafficking from their supply chain and within their business. The Vaillant Group understands that slavery, servitude, forced labour and human trafficking (Modern Slavery) is a global and growing is...
Technical Help
Get instant answers to a wide variety of technical questions at your fingertips. click here
Energy Expert, Diagnostics and Fault Finding
Courses available at: All training centres Duration: 09:00 to 16:30 (with 1 hour lunch break and regular coffee breaks) Aimed at: Experienced Heating/Appliance engineers who wish to gain valuable knowledge on the Energy appliance range. Problem solving using the appliance diagnostic systems and appliance sequences. A sound knowledge of the Energy range of appliances is required. Next step training from the Commissioning and Service course. Tools required: General heating engineer tool kit, mano...
What is Boiler Plus?
Boiler Plus is an upcoming legislation which will ensure that homes in the UK have efficient heating systems. From April 6th 2018 all new boiler installations require a minimum ErP efficiency of 92% and have time and temperature controls fitted. Combi boilers also require one of four additional criteria to be met to comply. Choosing the best option that works for each home is important as different homes have unique requirements. The criteria options are: Load compensation - Using a control to ...
VAILLANT GROUP UK LIMITED – DUAL BRANDED BOURNEMOUTH INSTALLER EVENT CREDITS
VAILLANT GROUP UK LIMITED – DUAL BRANDED BOURNEMOUTH INSTALLER EVENT CREDITS PROMOTION TERMS & CONDITIONS 1. QUALIFICATION 1.1 Subject to clauses 1.2, 1.3, 1.4 and 1.5 below, Vaillant Group UK Limited trading as Glow-worm (Glow-worm) provides this Glow-worm Bournemouth installer event credits promotion (Promotion), which is open to applicants, over the age of 18 years, who are resident in mainland United Kingdom. For the avoidance of doubt, mainland United Kingdom excludes, without limitation, ...
Boiler Servicing Fault Finding Codes
Fault finding codes for the CI Plus range
Fault finding codes for the CI Plus range Codes Description F1 Ignition fault F2 Fan/APS F3 Air fault F4 Ignition fault F5 Overheat Fault F6 Central heating flow thermistor F7 Domestic hot water thermistor F8 Tank thermistor (N/A For this appliance) F9 Water pressure sensor fault (please contact GW technical department for further information F10 Central return flow thermistor F11 Main board connection fault F12 Connection fault between main pcb and display pcb F13 Main pcb connection fault F14...
Glow-worm heads to PHEX Chelsea
Published 30-10-2019 Glow- worm, a proudly British brand, will be at the Plumbing and Heating Exhibition (PHEX) at Stamford Bridge Stadium in Chelsea on the 13th-14th of November, showcasing their highly efficient boiler range and controls. PHEX is a free event and is open from 10am on both days. With plenty to see and do across both days, including free stadium tours, it’s an event not to be missed. PHEX Chelsea provides you with the perfect opportunity to get your questions answered by our sp...
Don't just take our word for it...
See what our customers have got to say.
More than just a rating, Trustpilot stars signify that a company has nothing to hide, loves its customers and shares our mission to create ever-improving experiences for everyone Peter Holten Mühlmann, Founder and CEO of TrustPilot Our customers have rated their experience with Glow-worm on Trustpilot and we are pleased to announce we have been rated as excellent – 5 stars! Trustpilot is a well-known and highly respected review panel, where people visit to view product and brand related recomme...
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