Cosy homes made simpler
Glow-worm (glow-worm.co.uk) scores 78 out of 100 on Brand Analyzer, placing it in the Brand-Ready tier among Manufacturing brands, Energy & Utilities brands, Real Estate brands, in the 60th percentile of 14255 Manufacturing brands.
Glow-worm is a UK-based heating systems manufacturer with 90 years of experience in the industry. The company produces boilers and heating solutions for homeowners, including modern heat pump technology such as GeniaAir. Glow-worm positions itself as a trusted, long-established brand that helps UK homeowners replace, repair, or upgrade their boilers and heating systems, combining traditional expertise with contemporary, easy-to-use heating products.
| Brand Name | Glow-worm |
|---|---|
| Domain | glow-worm.co.uk |
| Industry | Manufacturing, Energy & Utilities |
| Main Competitors | Worcester Bosch (70/100), Baxi (89/100), Vaillant (83/100), Ideal Heating (81/100), Viessmann (86/100), Vokera (76/100) |
Moz Domain Authority 30/100 vs category average 37 / leader 94 - limited third-party links, so AI systems rarely encounter mentions of the brand.
Ranked #2,040,517 on the Tranco list of most-visited sites - modest traffic makes the brand easy for AI models to overlook.
Glow-worm appears on Wikipedia but without a dedicated company entity, so AI models can confuse it with similarly named subjects.
The homepage meta description reads "Glow-worm has been manufacturing heating systems for 90 years. We can provide assistance and information on replacing your boiler." (Meta description: 19 words (ideal length). No OG description (falling back to meta)) - this is the summary AI engines are most likely to quote.
Structured data on the homepage: 1 JSON-LD block(s), Organization schema, + Microdata, og:title, og:image, og:type, Twitter cards. Adding FAQ schema would further help AI crawlers parse the brand's identity.
AI-crawler access: robots.txt present, no AI bot restrictions - robots.txt controls whether engines like GPTBot and ClaudeBot can read the site at all.
Social footprint: verified profiles on Instagram, YouTube, X (Twitter), GitHub; no detected presence on Facebook, LinkedIn - consistent profiles reinforce the brand's identity across the web.
0 Reddit mentions - community discussion signals real-world reputation to AI models.
Live results from asking a general-purpose AI assistant about the brand, checked September 2026.
When asked "What is Glow-worm?", Claude could identify the brand as of September 2026. Glow-worm is a British manufacturer of domestic boilers and central heating systems, based in Belper, Derbyshire, and part of the Vaillant Group. It's been a well-known name in UK home heating for decades, offering gas boilers and heating controls for residential use. Best known for Manufacturing gas central heating boilers for UK homes.
When asked "Best brands similar to Glow-worm?", Claude would recommend Glow-worm as of September 2026. It's a long-established, widely recognized UK boiler brand often mentioned alongside Worcester Bosch, Vaillant, and Baxi when discussing home heating options.
Common questions people ask in Google, ChatGPT, Claude, Gemini, Perplexity, and other AI search engines.
Glow-worm's main competitors in Manufacturing: Worcester Bosch (70/100), Baxi (89/100), Vaillant (83/100), Ideal Heating (81/100), Viessmann (86/100).
Sources: Brand Analyzer scan
Glow-worm has limited AI-search visibility, scoring 42/100 on Brand Analyzer's AI visibility composite (visibility 35, trust 44, recommendation 51). This estimates how likely AI engines like ChatGPT, Claude, Gemini and Perplexity are to know, trust, and recommend the brand.
Sources: Glow-worm official site
Glow-worm offers heating systems for homes, primarily boilers for residential use. The company also offers heat pump technology, exemplified by its GeniaAir product, which represents a more modern approach to home heating. Additionally, Glow-worm provides guidance and information to homeowners considering boiler replacement or heating system upgrades.
Sources: Glow-worm official site
Glow-worm scores 51/100 on Brand Analyzer's AI recommendation signal, indicating it is reasonably likely to be surfaced when AI assistants like ChatGPT suggest Manufacturing options. Recommendation depends on crawlability, structured data, and category authority; a Wikipedia presence helps.
Sources: Glow-worm official site
Glow-worm is a UK heating systems manufacturer that has been producing boilers and related heating equipment for 90 years. It designs and manufactures products aimed at UK homeowners who need to replace, repair, or upgrade their home heating systems, including traditional boilers and newer heat pump technology.
Sources: Glow-worm official site
Glow-worm manufactures heating systems, including boilers and heat pump technology such as the GeniaAir, for UK homeowners. It provides products and information to help customers replace, repair, or upgrade their existing home heating systems, aiming to deliver reliable and comfortable warmth for homes.
Sources: Glow-worm official site
Glow-worm can improve AI discoverability by strengthening structured data (Organization and FAQ schema), maintaining an accurate Wikipedia/Wikidata entity, earning authoritative citations, and keeping content crawlable for AI bots. Brand Analyzer measures these as visibility, trust, and recommendation signals.
Sources: Glow-worm official site
Glow-worm's products are used by homeowners in the UK who need to replace, repair, or upgrade their boiler or home heating systems. The brand targets residential customers seeking reliable, established heating solutions rather than commercial or industrial clients.
Sources: Glow-worm official site
Glow-worm is known for its 90 years of experience manufacturing heating systems, particularly boilers, for UK homeowners. It has also become known for expanding into modern heat pump technology, exemplified by its GeniaAir product, reflecting a shift toward more innovative and environmentally considerate heating solutions.
Sources: Glow-worm official site
Glow-worm scores 42/100 for AI visibility - how well ChatGPT, Claude, Perplexity and Google AI Overviews can discover, identify and cite the brand.
Glow-worm has a limited AI-visibility profile at 42/100 - a proxy for how readily ChatGPT, Perplexity and Google's AI Overviews can recognise and cite it. Its strongest area is recommendation likelihood (51/100) and its weakest is visibility (35/100). It benefits from a Wikidata knowledge-graph entry, a global traffic rank of #2,040,517 (Tranco) and open access for AI crawlers (GPTBot, ClaudeBot, etc.). The main gaps holding it back: no clear Wikipedia entity to anchor it in LLM training data, a low Moz Domain Authority of 30/100 and no llms.txt to steer AI to its best pages. In a live check, Claude could already identify Glow-worm from memory (September 2026) - a sign these signals are paying off.
The score combines seven dimensions - name quality, digital presence, visual identity, messaging clarity, trust foundation, AI discoverability, and brand authority - into a single objective benchmark.
Ranked closest to Glow-worm: Global Construction Review (78/100), GKN Automotive (78/100), Godox (78/100), Presto (78/100).
A step up - brands to learn from: Zucchetti (81/100), Zucchetti (81/100).
Category leader: DHL (97/100).
Brand Analyzer is built by DataEase AI. Track your brand in ChatGPT, Gemini and Perplexity.