If enquiries answered within an hour close far better than enquiries answered later, you have a leakage problem, not a sales problem. You can check this in an afternoon with last quarter’s leads and the timestamps already in your phone system and inbox.
It matters because the two problems have opposite fixes. A sales problem needs a better offer, a better price or a better closer. A leakage problem needs faster replies and longer follow-up, and spending more on ads only pours more leads into the same gap.
What is the difference between leakage and a sales problem?
A sales problem shows up after a real conversation: the customer heard the price, saw the quote, and chose someone else or chose nothing. Leakage shows up before that conversation ever happens: the call went to voicemail, the form waited until tomorrow, the quote went out once and nobody chased it.
Owners tend to read both as "the leads aren’t good" or "the team isn’t closing." The test below separates them using numbers you already have.
Why is reply speed the test?
Because it is the clearest sign of leakage in the research. In an audit published in Harvard Business Review in 2011, only 37% of 2,241 US companies answered a web enquiry within an hour, and 23% never answered at all. A separate analysis of 1.25 million leads found firms that tried to reach a lead within an hour were nearly seven times as likely to qualify it as firms that waited even an hour longer, and more than 60 times as likely as firms that waited a day or more.
The Lead Response Management study, run by InsideSales with MIT’s James Oldroyd, put it more sharply: the odds of reaching a lead called within five minutes were 100 times better than one called after 30 minutes.
How do I run the one-hour test?
- 1Pull last quarter’s enquiriesEvery call, form, text and message from the last three months, with the time each arrived. Your phone system, website form inbox and CRM have this.
- 2Note the first real replyWhen did a person first answer or call back? An autoresponder doesn’t count. A missed call that was never returned counts as no reply.
- 3Split at one hourPut each enquiry in one of two groups: answered within an hour, or answered later (including never).
- 4Compare close ratesWhat share of each group became a booked job? If the fast group closes clearly better, you are looking at leakage.
- 5Count single-contact leadsHow many enquiries got one reply and then nothing, even though they never said no? That list is your first follow-up campaign.
What can make the test misleading?
Lead source. Referrals often close well no matter how fast you reply, and some paid leads close badly no matter how fast you reply. If your fast group happens to be mostly referrals and your slow group mostly cold web forms, the gap will look bigger than it is.
So split by source first, then run the one-hour comparison inside each source. If the gap holds inside the same source, it is real.
If you only have a few dozen leads a quarter, the numbers will be noisy. Use six months, or treat the result as a direction rather than a verdict.
How do I read the result?
| What you see | What it means | What to do |
|---|---|---|
| Fast replies close much better | Leads are being lost on the way in | Answer every call and form within minutes, around the clock |
| Many leads got one contact only | Follow-up stops too early | Follow up until the customer says yes or no |
| Fast and slow close about the same | Speed isn’t your constraint | Look at price, offer, reviews and the sales conversation |
| Few leads in either group | You have a demand problem | Marketing comes first; fix leakage as volume grows |
Why won’t more ad spend fix it?
If the gap is real, every extra lead you buy goes through the same slow phone line and the same one-email follow-up. You pay more per booked job, and the share you lose stays the same.
Fix the capture first. A missed call that gets a text back in seconds (Missed call text back: how it works and what to send) and quotes that get followed up automatically (our AI Sales Follow-Up page) make every lead you already pay for worth more. Then extra ad spend works harder.
What if I don’t have clean timestamps?
Most owners don’t, and that is a finding in itself. Start tracking now: log when each enquiry arrives and when someone first replies. Two or three weeks is enough to see a pattern.
In the meantime, the leads that already went cold are still worth a try. A solar installer we worked with re-engaged 832 old contacts and booked 38 appointments in under three weeks (the residential solar installation case study). How that works is in Database reactivation: how to turn old leads and estimates into booked jobs.
Questions people ask
How do I know if I have a sales problem or a lead problem?
Split last quarter’s enquiries by whether they got a real reply within an hour, then compare close rates. If the fast group closes clearly better, you are losing leads on the way in. If both close about the same, look at your offer and sales conversation.
What is a good lead response time for a service business?
Within five minutes for calls and forms, if you can. The Lead Response Management study found the odds of reaching a lead called within five minutes were 100 times better than one called after 30 minutes.
Should I spend more on ads if my leads aren’t closing?
Not until you have run the one-hour test. If slow replies are losing leads, more ad spend sends more leads into the same gap and raises your cost per booked job.
Does an autoresponder count as a reply?
No. An automatic “we got your message” email doesn’t answer the customer’s question or book the job. Count the first reply that moves the conversation forward, from a person or an AI that can actually answer and book.
How many follow-ups should a lead get?
More than one. Keep following up until the customer says yes or no, spaced over days and weeks. Leads that got one contact and then silence are usually the easiest revenue to recover.
What if my team says they always call back quickly?
Check the timestamps rather than relying on memory. Missed calls during jobs, after hours and on weekends are easy to forget, and the call log will show exactly when each one was returned.
Sources
Facts and prices checked on Nov 6, 2026. Prices change, so confirm on the source before you buy.
- SmartCompany, Are you letting online leads go cold?. Quotes the 2011 HBR study: 2,241 companies audited, 37% replied within an hour, 23% never; the 1.25 million lead analysis with the seven-times and 60-times findings. Read Nov 6, 2026.
- InsideSales and MIT, Lead Response Management study (PDF). Source of the 100-times contact odds for five minutes vs 30 minutes, and the 21-times qualification odds. Read Nov 6, 2026.
- Harvard Business Review, The Short Life of Online Sales Leads (March 2011). The original article. Opened Nov 6, 2026; only the title and summary are public, the text is paywalled.