Plumbing & heating company cuts time-to-payment from 52 to 19 days by auto-invoicing

What they did

Closed jobs in HubSpot had to be re-keyed into QuickBooks by hand. Now an invoice is created and sent automatically when a job closes, with reminders at 7 and 14 days overdue and escalation at 30.

Reported results

• Average payment time 52 to 19 days within 30 days
• $40,000 of outstanding invoices collected in the first month

Tools

HubSpot, QuickBooks Online, Stripe, Carapace (Streamos)

Cost

Not disclosed

Source

Streamos newsletter: https://streamos-newsletter.beehiiv.com/p/from-52-days-to-19-how-a-plumbing-business-got-its-cash-flow-back-4c52

Vendor case study (results reported by the vendor). Source checked 2026-10-20. Results are as reported by the source, not independently audited.

Try it yourself: starter prompt

Our suggested prompt for an AI assistant (ChatGPT, Claude, Grok or your phone-agent tool). It is not from the source.

Write a 3-step payment reminder sequence for a plumbing company: friendly at 7 days overdue, professional at 14 days, firm at 30 days. Include the invoice number [#], amount [$] and a payment link [link]. Keep each under 300 characters so it works by text.