| Remove old AC unit1 ea × $200.00 | $200.00 |
| 3-ton AC unit installed1 ea × $4,500.00 | $4,500.00 |
| Ductwork inspection and sealing1 flat × $350.00 | $350.00 |
| Subtotal | $5,050.00 |
Add your local sales tax (calculator), which is not included above. What to include: your business name and contact info, your license number if your state requires one for this trade, the customer's name and job site address, the date and how long the estimate is valid, the scope of work and payment terms, and a signature line to approve it.