3 common heating faults. 5 tools. 1 QR code to video guides. Diagnose and fix stuck radiators, low pressure, and cold spots in under 10 minutes — no plumber needed.
Every October, UK heating engineers are booked solid for 2-3 weeks. Homeowners sit in cold houses waiting for someone to spend 5 minutes tapping a valve, topping up pressure, or bleeding a radiator — three jobs that need zero specialist training.
When the heating fails in October, every plumber within 20 miles is booked solid. Homeowners wait 10-21 days for a call-out. For the elderly and families with young children, that's not inconvenient — it's dangerous.
Stuck TRV pin? Tap it with a spanner. Low boiler pressure? Turn a valve. Air in radiator? Turn a key. These are 2-5 minute jobs that any adult can do. Yet homeowners pay £80-150 because they don't know how.
A pin puller is £3. A pressure gauge is £5. A radiator key is £2. The knowledge is free on YouTube. But nobody has assembled them into a single grab-and-go kit with a QR code to the right videos. Until now.
Ask any heating engineer: stuck TRV pins and low-pressure top-ups are their least favourite call-outs. They clog October schedules, pay poorly, and prevent them from doing actual installation work. They'd happily sell customers a DIY kit instead.
A homeowner searching "radiator cold at top" finds 47 videos of varying quality. Which one is right for their boiler? Which tool do they need? The kit solves this: scan the QR code, watch the curated video for your exact fault.
Stuck TRV pins, low boiler pressure, and air in radiators account for an estimated 40-50% of all UK heating call-outs. That's 3-4 million unnecessary engineer visits every year. A £29.99 kit that fixes all three has an addressable market of millions.
Five tools. Three faults fixed. One QR code to expert video guides. Everything fits in a 20×15cm pouch that hangs next to the boiler.
Spring-loaded tool grips and frees stuck thermostatic radiator valve pins in seconds. Works on all UK-standard TRVs (Danfoss, Drayton, Honeywell). The #1 October call-out — fixed in 30 seconds.
Compact gauge with UK-standard boiler filling loop connector. Shows exact pressure in bar. Green zone = good. Red zone = needs topping up. Fits Worcester Bosch, Vaillant, Ideal, Baxi, and all major UK boilers.
Solid brass, won't round off like the cheap steel ones. Fits every standard UK radiator bleed valve. Bleed cold-top radiators in 60 seconds — the most satisfying home repair there is.
A5 step-by-step booklet with large photos. Covers the 3 most common faults with plain-English instructions. Laminated cover — keeps working even with wet hands next to a dripping radiator.
One scan. 9 curated video tutorials (3 per fault, beginner to advanced). No searching YouTube. No watching the wrong video. Filmed on UK boilers by a Gas Safe registered engineer.
Pick your symptom. Grab the tool. Scan the QR code. Fix it.
Stuck TRV pin. Grab the pin puller from the kit. Scan QR code for "TRV Pin Fix." Watch the 2-minute video. Pull the pin free. Radiator working. Total time: 4 minutes. Plumber cost avoided: £80-120.
System needs topping up. Grab the pressure gauge. Scan QR code for "Boiler Pressure Fix." Watch the 3-minute video showing exactly where your filling loop is. Open valve, watch gauge hit green zone, close valve. Total time: 5 minutes. Plumber cost avoided: £80-100.
Air trapped in radiator. Grab the radiator key. Scan QR code for "Bleeding Radiators." Watch the 90-second video. Turn key, hear hiss, wait for water, close. Total time: 3 minutes. Plumber cost avoided: £80-100.
Simple product. Multiple channels. Recurring lead capture for Sovael's trades network.
List on Amazon UK as "Home Heating DIY Diagnostic Kit." Target keywords: 'radiator not working', 'boiler pressure low', 'TRV stuck'. Estimated £29.99 retail, £8.50 landed cost. Amazon FBA fulfilment — no warehouse needed.
Wholesale at £14.99 to plumbing and DIY retailers. The kit is an impulse buy next to the TRVs and radiator valves. POS display with QR code demo video on a tablet. Target: 500 Screwfix stores by Year 2.
Plumbers buy the kit at trade price (£12.99) and sell it to customers for £29.99 during call-outs. "While I'm here, this kit will save you calling me next time." 100% margin for the plumber, zero inventory risk for Sovael.
The QR code links to video guides hosted on a Sovael landing page. Before watching, users enter their postcode. If the fix doesn't work, one-tap booking connects them to a Sovael-network plumber. Every kit is a lead-gen device.
Kit buyers get "Home Heating Health Check" — a £4.99/mo subscription with seasonal reminders (bleed radiators in September, check pressure in November, service boiler reminder). Recurring revenue from a one-time hardware sale.
The 9 video tutorials live on YouTube, ranked for "how to fix [fault]". Every view is a potential kit sale. The kit description links back to the videos. Video → Kit → Lead → Plumber booking. A self-reinforcing funnel.
Conservative model. UK-only Years 1-2. EU expansion Year 3. Primary channel: Amazon FBA + select retail. Trade channel grows organically as plumbers discover the kit.
| Metric | Year 1 | Year 2 | Year 3 |
|---|---|---|---|
| Units Sold | 18,000 | 72,000 | 140,000 |
| Avg. Selling Price | £26.99 | £26.99 | £29.99 |
| Landed Cost/Unit | £8.50 | £7.20 | £6.50 |
| Revenue (D2C + Retail) | £486,000 | £1,943,000 | £4,199,000 |
| Subscription Revenue | £54,000 | £324,000 | £756,000 |
| Total Revenue | £540,000 | £2,267,000 | £4,955,000 |
| COGS | (£153,000) | (£518,400) | (£910,000) |
| Operating Costs | (£280,000) | (£520,000) | (£780,000) |
| Net Profit | £107,000 | £1,228,600 | £3,265,000 |
| Breakeven | Month 6 | ||
| 3-Year ROI | 260% | ||
| Market Share (UK DIY) | 1.5% | 6.0% | 12.0% |
No existing product bundles the tools + guide + video into a single grab-and-go kit. This is a packaging innovation — the individual tools exist, but nobody has assembled them for the homeowner.
| Option | Price | Tools Included | Video Guide | Weakness |
|---|---|---|---|---|
| Buy tools separately (Amazon) | £12-18 | ✅ (if you know what to buy) | ❌ | Homeowner doesn't know what tools they need. No guidance. |
| YouTube + screwdriver | £0-5 | ❌ | ✅ (but 47 uncurated videos) | Wrong tool damages valve. Wrong video for their boiler. No pressure gauge. |
| Call a plumber | £80-150 | N/A | N/A | Expensive. 2-3 week wait. For a 5-minute fix. |
| British Gas HomeCare | £300+/year | N/A | N/A | Annual contract. Doesn't cover TRV pins. Still wait for engineer. |
| Heating DIY Kit | £29.99 | ✅ All 5 tools | ✅ Curated, boiler-specific | One-time purchase. Pays for itself on first use. |
Yes. Every fix in the kit is mechanical — turning a key, reading a gauge, pulling a pin. No electricity. No gas work. No tools beyond what's included. The video guides show exactly what to do, and every step has a "stop and call a plumber if..." safety note. Over 200,000 UK homeowners successfully fix these three faults themselves every year — they just don't have a kit that makes it obvious.
The QR code landing page has a one-tap "Book a Plumber" button that connects to Sovael's trades network. Postcode-matched. Rated plumbers. If the DIY fix doesn't solve it, you're one tap from a professional — and the plumber knows exactly what you've already tried because the kit logs your steps.
Three things: (1) Curation — most homeowners don't know a TRV pin puller exists. (2) The QR code — no searching YouTube, no watching the wrong video. Each video is 2-3 minutes, boiler-specific, filmed by a Gas Safe engineer. (3) The lead capture — if the fix fails, Sovael books the plumber. The kit is a Trojan horse for the trades network.
Full financial model with unit economics, supplier shortlist (3 Chinese manufacturers quoting £6.50-8.50/unit landed), packaging design brief, Amazon FBA launch strategy, Screwfix buyer introduction template, plumber distribution agreement template, 9 video script outlines, QR code landing page wireframes, and 12-month launch timeline with monthly milestones.
Supplier quotes, financial model, Amazon FBA launch plan, video scripts, and 12-month roadmap — £49.
Nobody claimed this opportunity. Sovael Studio launches internally in 30 days if no buyer emerges.