Helium and nitrogen tanks can be rented from welding supply shops listed in Yellow Page directories. Different sizes of tanks are available and often can be delivered to and picked up from the event location.
| Balloon Size |
Average Flying Time With Helium |
Avg. Number Balloons/ Helium Tank (242 cu. ft.) |
| 9" Round |
12-16 hours* |
900 |
| 11" Round |
18-24 hours* |
484 |
| 16" Round |
30+ hours* |
160 |
| 17" Round Outdoor Display Balloon |
35-50 hours* |
150 |
| 36" Round Giant |
3-5 days* |
16 |
| 11" Heart |
8 hours* |
806 |
| 17" Heart |
14 hours* |
268 |
| 36" Heart Giant |
3 days* |
34 |
| 2" x 60" AdWave |
Air Inflation Only/Nitrogen Recommended |
— |
| 3" x 50" AdWave |
Air Inflation Only/Nitrogen Recommended |
— |
| 6" x 46" Banner |
12hours* |
242 |
*Conservative averages. Actual flying time will vary depending on temperatrue and atmospheric conditions. Accessories for sealing balloons will increase weight and shorten average flying time.
| Balloon Size |
Average Flying Time With Helium |
Avg. Number Balloons/ Helium Tank (242 cu. ft.) |
| 18" Round |
3-5 days* |
475 |
| 18" Heart |
3-5 days* |
475 |
| 20" Star |
3-5 days* |
400 |
| 36" Round |
10 days* |
50 |
| 36" Heart |
10 days* |
55 |
| 36" Star |
10 days* |
95 |
Qualatex Microfoil balloons inflate to uniform sizes; measurements refer to flat balloons.
*Actual flying time will vary depending on inks used and ink coverage. Helium-filled Microfoil balloons may not float in altitudes exceeding approximately 3,000 feet.
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