The Hidden Payroll Leak Costing HVAC Companies 8–15% in Lost Profit

If your revenue is solid but margin still feels thin, the problem often isn't pricing—it's where the labour hours went. Most HVAC contractors pay for 40 hours per tech per week but only see a fraction of that time tied to specific jobs. The rest is payroll leakage: money going out the door without a clear link to revenue or recovery.

What Counts as Payroll Leakage?

Payroll leakage is any labour cost that doesn't map cleanly to billable work or intentional non-billable categories. In practice it shows up as:

• Unallocated time — Hours on the timesheet that never get assigned to a job. They still get paid; they just don't show up in job costing.
• Rounding and fudging — "About 8 hours" or rounding up to the nearest half-hour. Small daily overstatements add up to a big number over a year.
• Job creep — Time that should be Job A gets logged to Job B (or to nothing). Your job reports are wrong and you can't see which jobs are actually profitable.
• Admin and travel in the wrong bucket — If travel and paperwork aren't coded separately, they inflate "job" hours and distort true job cost and estimate accuracy.

Once you start assigning every hour to a job (or to a clear non-billable code), you see real labour cost per job. That visibility is the first step to recovering the 8–15% that’s currently hidden.

Why Manual Timesheets Make It Worse

Paper or spreadsheet timesheets encourage rounding and delay. By the time someone fills them out, they're guessing. Did that call take 45 minutes or an hour? Was the extra 20 minutes on the install job or drive time? Without a simple way to log time against the job as it happens, leakage grows. Digital time tracking that’s job-coded from the start—with techs clocking in and out on the job from the van—reduces guesswork and gives you data you can trust for job costing and estimating.

How to Start Closing the Leak

1. Require job-coded time — Every approved hour must be tied to a job or a defined non-billable category (travel, admin, training).
2. Review labour cost per job weekly — Compare actual labour to estimate. Jobs that consistently run over are a signal of leakage or poor estimating; see labour spend per job in real time to act before the month is over.
3. Use a single source of truth — One system for time, jobs, and payroll export keeps job cost and payroll in sync and makes it obvious when hours don't add up.

Recovering 8–15% doesn't require cutting pay or hours—it requires seeing where those hours go. With job-based time tracking and weekly labour cost reviews, most contractors can identify and correct the biggest leaks within a quarter. If you're ready to see labour cost per job and stop the leak, get started with FieldCrew.