How do I check an HVAC company’s customer database is complete and current?

Ask for an export of the database and the matching invoice records. Pick a sample of recent invoices and see whether each customer appears with the right address, equipment details and service history. Missing customers show where data entry slipped.

Look at the fields that matter for repeat work: last service date, equipment age, maintenance plan status and contact preferences. If these are blank for many records, the list will not help you plan follow-up calls. Also look at duplicates and notes. If the same household appears several times under different spellings, reports will be unreliable, and notes about access, pets or equipment quirks are worth keeping because technicians rely on them.

Test it for real. With the seller’s permission, contact a handful of customers and ask if their details are right. Wrong numbers, duplicates and people who have moved reveal how well the list was maintained. Then ask how the list is updated and by whom. Is it entered on the job, or typed up later from paper? Who can change it? Your lawyer can advise what rules apply to customer information when it passes to a new owner, so ask before you plan any outreach to the whole list.

Key takeaways

• Match a sample of invoices to database records.
• Check last service dates, equipment details and contact information.
• Ask your lawyer about rules for using customer information after a sale.