Most HVAC contractors in London choose between scraped leads and paid lead generation without understanding the real tradeoff: scraped leads cost £0.50–£2 per contact but carry 40–60% duplication and zero intent signal, while paid leads run £8–£15 each but arrive warm and pre-qualified. This guide breaks down which model actually returns money, and which one wastes it.
Scraped Leads: The Hidden Cost Structure
Scraped leads sound cheap because they are. You buy bulk contact data harvested from directories, review sites, and business listings—often thousands of records at pennies per name. In London, a batch of 5,000 phone numbers might cost £50–£100.
But cost per lead is not profit per lead. Here's what actually happens: 35–45% of numbers are dead or disconnected. Another 20–30% are duplicates across multiple batches. Of the remaining valid contacts, most haven't expressed any intent to hire—they're just people who had HVAC mentioned in a review or listing.
Your conversion rate typically sits between 0.5–2%, meaning you need 500–1,000 outbound touches to close one job. If a job is worth £3,000–£5,000, the math works on paper. In practice, it means 6–8 hours of cold calling per conversion, plus the wear on your sales team chasing cold prospects who didn't ask for contact.
Paid Lead Gen: Quality Over Volume
Paid lead generation platforms (Homeserve, Checkatrade partnerships, local lead brokers) charge per qualified lead. You'll pay £8–£15 per record in London, sometimes more for same-day delivery or exclusivity.
The difference: these leads came from intent. Someone submitted a form requesting HVAC quotes, repair availability, or boiler servicing. The platform pre-qualified them, sometimes even filtered by postcode and job type.
Conversion rates jump to 8–15% because you're calling warm prospects, not cold lists. Your sales team closes deals faster—usually 2–3 calls instead of 10+. You also get exclusivity guarantees (you're the only contractor who gets that lead) on premium providers, eliminating competition for the same customer.
The real cost per job is lower: £300–£400 in lead spend to close a £4,000 booking beats £400–£600 in time and wasted dials on scraped lists.
Comparison: Margins, Time, and Reliability
**Scraped leads** = low friction, high volume, but terrible predictability. You'll get 1–2 closures per 1,000 dials if you're experienced. It suits contractors with spare sales capacity who can absorb dead time.
**Paid leads** = higher cost, lower volume, predictable pipeline. If you buy 50 leads a week at £12 each (£600 spend), you'll close 4–7 jobs reliably.
Reliability matters. With scraped leads, some weeks you'll get nothing. With paid sources, your pipeline is consistent—you know Thursday's spend will generate Tuesday's calls. That consistency compounds: you can staff your team confidently, budget accurately, and scale without guesswork.
London's competitive market makes this difference sharp. Paid platforms prioritize speed—you get the lead within 2 hours. Scraped data is already days old by the time it reaches you, and competitors already have the same number. By the time you call, they've called five other contractors.
Which One Should You Use?
Start with paid lead generation if: you're under 20 jobs a month, can't afford dead dials, need predictable cash flow, or operate in dense areas like central London where speed wins.
Test scraped leads if: you have a dedicated cold-calling team, can afford high friction, or service outer zones (Croydon, Harrow) where slower response times are normal.
Most successful London HVAC operators use a hybrid: paid leads for the baseline (60–70% of volume), scraped lists to fill gaps and test new postcodes cheaply. You get reliability from paid sources and scale from volume. A lead pack from a London HVAC provider ensures you're not duplicating what competitors already have.
FAQ
Why are scraped leads so much cheaper?
They're harvested in bulk from public sources—no vetting, no consent, no intent signal. Platforms sell to hundreds of contractors, so duplicates are rife. You're buying raw data, not qualified leads. Volume at scale makes them pennies, but most are unusable.
Do paid leads actually convert higher for HVAC?
Yes, 8–15% vs 0.5–2% for cold scrapes. Paid leads came from a form submission or quote request—they want HVAC work. You call them warm. Compare the numbers: 10 paid leads at £12 each (£120) closing 1 job beats 1,000 scraped dials at £100 closing 1–2.
Can I mix both without duplication?
Not easily with general scrapers, but yes with a London-specific lead pack. A dedicated provider tracks who they've sold to avoid flooding the same contractor with duplicates, and prevents reselling to competitors in your area. It's the safest hybrid approach.
What if I'm new and can't afford paid leads?
Start with a small paid batch (£200–£300 for 20–30 leads) to build case studies and testimonials. Once you close 3–5 jobs, use profit to scale paid generation. Scraped leads alone will burn your energy and delay growth.
Is there a London-specific lead source I should know about?
Yes. A quality lead pack built for London HVAC contractors combines paid intent data with local deduplication, same-day dispatch, and postcode filtering. It costs more upfront but prevents the waste you'd have mixing scraped and paid blind.