Change Orders: How Installs Lose Profit Mid-Job

Installs often look fine on the signed quote and thin after the final invoice. The gap is usually unpaid extras: duct fixes nobody priced, panel upgrades "while we're here," customer-driven moves, or code items discovered late. Without a change-order habit, crews gift hours and parts to keep the day moving.

Where margin leaks on site

• Scope was vague ("replace the system") without exclusions
• Lead tech improvises instead of calling for a priced change
• Office approves verbally with no dollar amount
• Extras hit the truck but never hit the invoice
• Job costing never compares estimate vs actual hours and materials

A simple field process

1. Stop when work exceeds the signed scope.
2. Photo + note the condition (text to office or in-app).
3. Price labor + materials + any extra travel using your normal rates.
4. Approve in writing (SMS or e-sign) before continuing when possible.
5. Cost the change on the job so final margin is honest.

Speed matters. Pre-built change-order flat rates for common extras (condensate pump, disconnect upgrade, permit trip) keep approvals fast without guessing.

Tighten the original estimate

List inclusions and exclusions on every install quote. Site surveys that catch attic access, electrical capacity, and drain issues cut surprise change orders — and when surprises still happen, the customer already expects a priced option.

Review variance weekly

Compare estimated vs actual hours and materials on completed installs. Recurring overruns on the same line items mean your base quote is wrong, not that customers are difficult.