HVAC and electrical teams tend to run three kinds of work in the same week: short service calls, multi-day installs, and warranty visits that shouldn't be billed at all. A single blended timesheet number can't tell those apart — and once it's blended, there's no getting the detail back.
Separate rows, not separate memory
The fix is structural: one row per job, per day, tagged with its own project and task, rather than one number for 'Tuesday.' A tech who did a two-hour service call in the morning and started a multi-day install in the afternoon should have two rows, not one combined guess.
Marking warranty work correctly
Warranty visits are real work that shouldn't hit a customer invoice. Marking those entries non-billable — at the row level, at the time they're logged — keeps them out of invoicing while still counting toward payroll and toward job cost tracking on the install they relate to.
Timer entry for techs, grid entry for the office
Techs bouncing between tickets all day tend to get more accurate hours from a timer they start and stop per job. Office and admin staff, whose hours are predictable, are usually faster with the weekly grid. Running both side by side — feeding the same approval workflow — covers both without forcing either group into the wrong tool.
Same-day approval keeps Monday clean
Because service and install work happens all week, waiting until Friday to review everything means a manager is reconstructing five days of tickets from memory. Reviewing and approving each day (or each job) as it's submitted keeps the backlog from ever building up in the first place.