📐 Duct Requirements
Recommended Duct Size
0"
0
Actual Velocity (FPM)
0
Duct Area (sq in)
--
Rectangular Equivalent
📊 CFM to Duct Size Reference
| CFM | Round Duct | Rect. Equiv | Typical Use |
|---|---|---|---|
| 80-100 | 5" | 4x8" | Single register |
| 100-150 | 6" | 4x10" | Small room |
| 200-250 | 7" | 6x10" | Medium room |
| 300-400 | 8" | 6x12" | Large room |
| 400-550 | 9" | 8x12" | Branch trunk |
| 600-800 | 10" | 8x14" | Main branch |
| 800-1100 | 12" | 10x14" | Main trunk |
❓ Frequently Asked Questions
How do I estimate home improvement costs?
Get multiple contractor quotes, research material costs, and add 10-20% for unexpected expenses. Labor typically costs 50-65% of total project cost.
What home improvements add the most value?
Kitchen and bathroom remodels, new roofing, and energy-efficient upgrades typically provide the best return on investment.
Should I DIY or hire a contractor?
DIY saves money on labor but risks quality issues. Hire contractors for electrical, plumbing, structural work, or permits required.