# MainStreet Skills > Tested AI automations for HVAC and plumbing shops: missed calls, quote follow-up, payments, job notes and call coaching. For HVAC and plumbing shops in the US and Canada using Jobber and n8n. Every workflow was imported into n8n 2.45.4 and run end to end on our test machine. Twilio, Jobber and Stripe were replaced by a local mock server that accepts the same request shapes as their documented APIs and records every call. The AI steps used a small local model (Qwen2.5-3B-Instruct, 4-bit) and the speech-to-text steps used Whisper base.en running locally. Mock data (customers, quotes, invoices, recordings) is invented. Nothing was sent to a real phone, customer or account. ## Recipes - [Missed-call text-back + after-hours AI intake](https://mainstreetskills.com/recipes/missed-call-text-back): problem: calls go unanswered while you're on a job or after hours. Verified with mocks, last tested 2026-10-27. Download: https://mainstreetskills.com/downloads/missed-call-text-back.zip - [3-touch quote follow-up (Jobber)](https://mainstreetskills.com/recipes/quote-follow-up): problem: quotes go quiet and nobody follows up. Verified with mocks, last tested 2026-10-27. Download: https://mainstreetskills.com/downloads/quote-follow-up.zip - [Job complete → invoice → payment-link reminder ladder](https://mainstreetskills.com/recipes/invoice-payment-reminders): problem: invoices sit unpaid for weeks. Stripe verified live in test mode (2026-10-27); Jobber and Twilio mocked, last tested 2026-10-27. Download: https://mainstreetskills.com/downloads/invoice-payment-reminders.zip - [Tech voice memo → job summary + invoice line items + Jobber note](https://mainstreetskills.com/recipes/voice-memo-to-invoice): problem: paperwork eats your evenings. Verified with mocks, last tested 2026-10-27. Download: https://mainstreetskills.com/downloads/voice-memo-to-invoice.zip - [Call-recording scorecard + weekly coaching summary](https://mainstreetskills.com/recipes/call-scorecard): problem: answered calls that never get booked. Verified with mocks, last tested 2026-10-27. Download: https://mainstreetskills.com/downloads/call-scorecard.zip ## Blog - [How many calls is your HVAC shop missing, and what it costs](https://mainstreetskills.com/blog/hvac-missed-calls-cost): Published benchmarks say a person answers about a third of HVAC calls. Here is what those numbers do and don't tell you, how to count your own missed calls in a week, and how to put a dollar figure on them. - [Why HVAC quotes go quiet: a 3-touch follow-up you can set up this week](https://mainstreetskills.com/blog/hvac-quote-follow-up): Most quotes don't get a no. They get silence. Why that happens, what a respectful follow-up looks like (day 2, day 5, day 10, then the owner calls), and the exact texts, with honest caveats about the numbers. Machine-readable data: https://mainstreetskills.com/feed.json