Built for Residential Solar Installers

The Reason You're Losing Installs
Isn't Your Quote.
It's the 8–12 Hours Before It.

A lead contacted within five minutes is 21 times more likely to book than one contacted after thirty. The average solar company takes 8–12 hours.

Apply for a Private Deployment

MIT and InsideSales.com studied lead response across thousands of businesses. The finding holds for solar exactly as it does everywhere else: speed of response, not quote quality, is what separates a booked install from a lost one.

The UK solar market installed a record 267,032 systems in 2025, up 31% on the previous high. More than 5,250 MCS-certified contractors are now competing for the same homeowners, and that number is growing roughly 7% a year. Most of those homeowners request 3–5 quotes before deciding.

You can prove your quote was competitive. You can't prove the homeowner ever saw it before booking with someone else.

Your business isn't bad at quoting. Your margins are competitive. Your panels are the same panels everyone else installs.

The gap sits entirely between the enquiry and the callback — in the 8–12 hours the average solar company takes to respond, while a lead that's contacted within five minutes is 21 times more likely to book than one contacted after thirty.

The homeowner didn't choose a better installer. They chose whoever picked up the phone.

The Problem

Why a Competitive Quote Still Loses the Install

You have complete visibility over everything you control: the design, the BOM, the margin, the install schedule. Your quote is correctly priced.

You have zero visibility over what happens to the lead before it reaches you. Exclusive leads run £50–£150; cheaper shared leads, sold to three or four installers at once, convert at just 5–10%. Either way, the homeowner is comparing 3–5 quotes, and the comparison isn't on price first — it's on who showed up.

Project Solar, the UK's largest residential installer, has built its entire reputation on this exact point — not on having the cheapest panels, but on answering, surveying fast, and actually picking up the phone. That's the competitive bar now, not a nice-to-have.

10:14 AM // Quote request via comparison site

Lead arrives in your inbox

Nobody on your team is free to respond

10:16 AM // 2 minutes later

Homeowner's other quote request gets answered

Competitor books the site survey on the spot

10:22 AM // 8 minutes in

Site survey booked with a competitor

You paid for the lead. They got the install.

9:15 AM Monday // Next working day

You finally call the lead back

Too late. Job's gone. Revenue gone.

Sentinel Closes the Gap. Automatically. Without You Changing Anything.

Sentinel is a fully managed lead response and follow-up service. It connects around your existing CRM, design software, and lead sources, and responds to every enquiry within minutes.

The Solution

Every Lead Tracked. Every Outcome Visible. Booked Before They Call the Next Installer.

Every residential enquiry gets a structured reply within two minutes — your website, your comparison-site leads, your Google Ads — before the homeowner reaches the next installer on the list. Every contact and outcome is logged, so you can see exactly where every lead went.

Sub-2-Minute Residential Response Every homeowner enquiry hears back before they call the next installer

Tracked Commercial Follow-Up C&I enquiries get structured, persistent follow-up across a multi-month cycle

Full Lead Visibility Every contact attempt and outcome logged, so the "bad leads" objection has no purchase

Done For You MangoTeq builds it and runs it. Nothing for your reps or install team to manage

Sentinel works around your existing CRM, design software, and lead sources. Nothing changes for your team. If it underperforms, it can be removed without disrupting your operation.

How It Works

Three steps. No disruption to your business.

We Diagnose

We review your current lead flow, residential and commercial, and show you exactly where response delays are costing booked revenue.

We Deploy

Sentinel is built around your existing CRM and design tools. No software for your team to install, no process to change.

We Protect

Every enquiry gets an instant response. You get the data. Conversion improves across both pipelines.

The Outcome

What the Response Gap Costs in Concrete Terms

A solar business spending £30–£250 per lead across paid channels is, at typical conversion rates, buying 15–20 leads for every job closed on shared sources alone. Losing even a fifth of those to response delay is not a rounding error on a marketing budget that size.

Ryan Unrau, a specialist in database reactivation, worked with a £40 million roofing company on a parallel problem: 2,000 leads, three years old, written off entirely. Structured follow-up turned them into £48,000 in booked revenue. Same leads. Same prospects. The only thing that changed was follow-up.

Leads contacted and followed up properly, so conversion improves on both pipelines
Full visibility into every lead, so the "bad leads" objection has no purchase
Early-stage commercial enquiries tracked instead of going quiet
Most businesses recover the deployment cost within 30–60 days

Your lead spend used to end at the inbox. Now it ends at a booked job.

After Sentinel Deployment

Lead Response Time

<2 minutes

Down from 8–12 hour industry average

Follow-Up Consistency

100%

Residential and commercial, every time

Revenue Protection

Active

24/7. No gaps, no missed installs

Questions Solar Companies Ask Before They Commit

Straight answers to what installers and ops directors ask us most.

The 8–12 hour figure comes from measuring actual response times, not stated policy. Most owners believe their team responds within the hour. The numbers say otherwise, almost every time we check.

No. The mechanics are identical whether it's a five-person crew or fifty. One short onboarding questionnaire, handled entirely by us from there. You don't need scale to need this. You just need leads that are currently going cold.

No. Every message goes out in your business's name, written the way your business actually talks. The lead never sees MangoTeq. Not once.

A notification tells someone a lead arrived. It doesn't contact the lead, follow it up, or keep going until it books or opts out. That's the part Sentinel operates instead.

Worth checking before assuming it's true. A lead that goes cold because nobody called for hours looks identical to a bad lead in your CRM. You won't know which is which until something actually replies.

There's no software to install and nothing to configure on your end. And if we don't deliver the agreed minimum of qualified conversations within 60–90 days of go-live... we keep working. No extra cost. Until we do.

It depends on your lead volume and deal value across both pipelines, so we work it out on the call. Pricing is performance-aligned. We go through the numbers together before anything is agreed.

Stop Losing Installs You've Already Paid For

Apply for a private deployment session. We'll show you exactly where leads are going cold, residential and commercial, and how Sentinel closes the gap.