Glow-worm is a renowned UK-based manufacturer of high-efficiency gas boilers, offering a wide range of reliable and energy-saving models for residential and commercial applications. This comprehensive guide delves into the technical specifications, performance characteristics, installation considerations, and maintenance requirements of Glow-worm gas boilers, providing a valuable resource for homeowners, DIY enthusiasts, and HVAC professionals.
Glow-worm Gas Boiler Range
Glow-worm’s gas boiler lineup encompasses three primary categories:
- Combi Boilers:
- Provide both central heating and domestic hot water from a single, compact unit.
- Available in various models, including the Compact, Energy, and Ultimate₃ series.
- Typical input/output capacities range from 24 kW to 35 kW.
- Dimensions (H x W x D): 700 mm x 395 mm x 278 mm to 930 mm x 450 mm x 350 mm.
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Weights: 27 kg to 45 kg.
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System Boilers:
- Provide central heating and hot water via a separate hot water cylinder.
- Suitable for homes with higher hot water demands.
- Models include the Energy and Ultimate₃ series.
- Input/output capacities range from 12 kW to 30 kW.
- Dimensions (H x W x D): 600 mm x 390 mm x 280 mm to 850 mm x 480 mm x 350 mm.
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Weights: 35 kg to 55 kg.
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Regular Boilers:
- Provide central heating and hot water through a separate storage cylinder and water tank.
- Ideal for homes with multiple bathrooms.
- Available in the Energy and Ultimate₃ series.
- Input/output capacities range from 12 kW to 30 kW.
- Dimensions (H x W x D): 600 mm x 390 mm x 280 mm to 850 mm x 480 mm x 350 mm.
- Weights: 35 kg to 55 kg.
Glow-worm Gas Boiler Reviews
Glow-worm boilers have earned a strong reputation for their reliability, efficiency, and customer satisfaction. On Trustpilot, the brand maintains an impressive average rating of 4.5 out of 5 stars, based on over 6,944 reviews.
Customers consistently praise the boilers’ performance, energy-saving capabilities, and the brand’s responsive customer support. Common positive feedback includes:
- “Highly efficient and reliable, saving me a significant amount on my energy bills.”
- “Easy to install and the customer service team was very helpful in guiding me through the process.”
- “Quiet operation and consistent heating throughout my home.”
While Glow-worm boilers are generally well-received, some customers have reported occasional issues, such as:
- Leaks due to faulty installation or wear and tear over time.
- Sensor malfunctions leading to performance problems.
- Ignition failures caused by faulty ignition components or electrical issues.
These issues, however, appear to be isolated and do not significantly detract from the overall positive reputation of Glow-worm gas boilers.
Glow-worm Gas Boiler Prices
The prices of Glow-worm gas boilers can vary depending on the model, type, and specific features. Here are the approximate price ranges for each boiler category:
| Boiler Type | Price Range |
|---|---|
| Combi Boilers | £600 – £1,200 |
| System Boilers | £700 – £1,500 |
| Regular Boilers | £800 – £1,800 |
It’s important to note that these prices are subject to change and may be influenced by factors such as installation complexity, additional accessories, and regional variations. It’s always recommended to obtain a detailed quote from a qualified installer to get an accurate estimate for your specific project.
Technical Specifications
Glow-worm gas boilers are renowned for their high efficiency and reliability, meeting the latest industry standards and regulations. Here are some key technical specifications:
Efficiency
- Glow-worm boilers have an Energy-related Products (ErP) efficiency rating of ‘A’, indicating exceptional energy efficiency and lower operating costs.
- The boilers achieve impressive seasonal space heating energy efficiencies of up to 94%.
Warranty
- Glow-worm offers a range of warranty periods, typically from 5 to 10 years, depending on the specific model and installation conditions.
- The warranty coverage includes the heat exchanger, parts, and labor, providing peace of mind for homeowners.
kW Output
- Glow-worm gas boilers are available in a wide range of kW outputs, ranging from 12 kW to 30 kW, catering to the heating and hot water demands of various home sizes.
- The specific kW output required will depend on factors such as the size of the property, insulation levels, and the number of radiators and hot water outlets.
Dimensions and Weight
- Combi boiler dimensions (H x W x D) typically range from 700 mm x 395 mm x 278 mm to 930 mm x 450 mm x 350 mm, with weights from 27 kg to 45 kg.
- System and regular boiler dimensions (H x W x D) typically range from 600 mm x 390 mm x 280 mm to 850 mm x 480 mm x 350 mm, with weights from 35 kg to 55 kg.
DIY Installation and Maintenance
While it is generally recommended to have a professional installer handle the initial setup and commissioning of a Glow-worm gas boiler, there are some basic DIY tasks that homeowners can perform to maintain the system’s optimal performance and efficiency.
Regular Cleaning
- Regularly clean the boiler and its components, such as the heat exchanger, burner, and condensate trap, to ensure efficient operation and prevent potential issues.
- Use a soft cloth, mild detergent, and warm water to gently wipe down the boiler’s exterior and accessible internal components.
Filter Maintenance
- Replace the boiler’s filters, such as the system filter and the domestic hot water filter, at the recommended intervals to maintain optimal flow and prevent blockages.
- Consult the manufacturer’s instructions for the specific filter replacement schedule and procedures.
Leak Checks
- Perform regular visual inspections of the boiler, pipework, and connections to identify any potential leaks.
- Address any leaks promptly to prevent water damage and maintain the system’s integrity.
It’s important to note that while these basic DIY tasks can be performed, it is still recommended to have a qualified Gas Safe registered engineer handle any major servicing, repairs, or modifications to the Glow-worm gas boiler to ensure safety and compliance with relevant regulations.
Reference:
- https://www.glow-worm.co.uk/homeowner/products/boilers/combi-boilers/
- https://www.glow-worm.co.uk/homeowner/products/boilers/
- https://heatable.co.uk/boiler-advice/glow-worm-boilers-prices
- https://www.boilerguide.co.uk/manufacturers/glow-worm
- https://www.mrcentralheating.co.uk/boilers/boilers-by-brand/glow-worm-boilers/combi-boilers