# n8n workflows for HVAC and furnace repair companies: implementation worksheet

Planning document only. No executable n8n workflow.

Source: https://flowgrammer.ca/n8n-workflows/trades-construction/hvac
Reviewed: 2026-10-13

## Workflow contract

Trigger:
Source system:
Stable record/event identifier:
Required fields:
Test destination:
Reviewer and approval channel:
Credentials and minimum permissions:
Execution-history access and retention:

## Acceptance example

Input: A callback is marked complete but the note says a part is on order.
Expected: Hold the completion message and route the discrepancy to the service manager.
Stop: A warranty condition has not been confirmed against its source.
Reviewer: dispatcher or project lead

## Test record

Normal input result:
Missing-field result:
Duplicate-event result:
Destination-failure and alert result:
Source-version change result:
Approval recorded:
Recovery owner:

## Before expanding

Task frequency and baseline time:
Observed pilot results:
Open exceptions:
Approved live scope:

Discuss implementation: https://flowgrammer.ca/book?offer=n8n%20workflow