Instant Pot Duo 7-in-1 Electric vs All American 921 21.5-Quart Pressure
Both made our Best Pressure Cookers shortlist, at #1 and #3. Here's how they differ and who each one suits.
- BuyOnceRight Research Desk
- Updated
- 4 min read
Quick verdict
Choose the Instant Pot Duo 7-in-1 Electric Pressure Cooker 6-Quart if you want pressure cooking mode replaces most slow cook recipes at 45 to 90 minutes instead of 8 to 10 hours. Choose the All American 921 21.5-Quart Pressure Cooker/Canner if you'd rather have no rubber gasket, metal-to-metal seal that never degrades or needs replacement. Overall we rank the Instant Pot Duo 7-in-1 Electric Pressure Cooker 6-Quart higher: #1 versus #3 in our Best Pressure Cookers list.
Winner overall: Instant Pot Duo 7-in-1 Electric Pressure Cooker 6-Quart
Instant Pot Duo 7-in-1 Electric Pressure Cooker 6-Quart vs All American 921 21.5-Quart Pressure Cooker/Canner compared
Every difference that matters, in one table.
| Attribute | ||
|---|---|---|
| Our ranking | #1 of 12 in Best Pressure Cookers | #3 of 12 in Best Pressure Cookers |
| Pick label | Best Canner | |
| Brand | Instant Pot | All American |
| Key features | 7-in-1 multi-cooker: pressure, slow cook, rice, steam, sauté, yogurt, warm; 6-quart stainless steel inner pot, stovetop-safe; Programmable slow cook mode with low/normal/high | 21.5-quart; Pressure canning; Metal-to-metal seal |
| Biggest strength | Pressure cooking mode replaces most slow cook recipes at 45 to 90 minutes instead of 8 to 10 hours | No rubber gasket, metal-to-metal seal that never degrades or needs replacement |
| Main trade-off | Slow cook mode runs 10 to 20 degrees hotter than a dedicated slow cooker, recipes need 25 to 30% less time | Heavy, 15+ lbs empty |
| Best for | Most buyers | Most buyers |
Which should you buy?
#1 pick
Choose the Instant Pot Duo 7-in-1 Electric Pressure Cooker 6-Quart if…
- Pressure cooking mode replaces most slow cook recipes at 45 to 90 minutes instead of 8 to 10 hours
- Stainless steel inner pot resists staining that affects glazed-ceramic slow cookers
- Stovetop-safe inner pot allows searing before cooking in the same vessel
Prefer the alternative? See the All American 921 21.5-Quart Pressure Cooker/Canner section.
#3 pick · Best Canner
Choose the All American 921 21.5-Quart Pressure Cooker/Canner if…
- No rubber gasket, metal-to-metal seal that never degrades or needs replacement
- The standard for pressure canning low-acid foods (green beans, meat, stock)
- USA made with a multi-decade lifespan
Prefer the alternative? See the Instant Pot Duo 7-in-1 Electric Pressure Cooker 6-Quart section.
Pros and cons of each
Instant Pot Duo 7-in-1 Electric Pressure Cooker 6-Quart
Pros
- Pressure cooking mode replaces most slow cook recipes at 45 to 90 minutes instead of 8 to 10 hours
- Stainless steel inner pot resists staining that affects glazed-ceramic slow cookers
- Stovetop-safe inner pot allows searing before cooking in the same vessel
- One appliance covers slow cooking, pressure cooking, and rice cooking
- 78,000+ Amazon ratings at 4.7 average, the largest review base in this roundup
Cons
- Slow cook mode runs 10 to 20 degrees hotter than a dedicated slow cooker, recipes need 25 to 30% less time
- Round insert doesn't fit a whole chicken as well as an oval-shaped dedicated slow cooker
- Requires a separately purchased glass lid for proper vented slow cooking
- Sealing ring retains strong odors from curry or chili and needs separate washing
All American 921 21.5-Quart Pressure Cooker/Canner
Pros
- No rubber gasket, metal-to-metal seal that never degrades or needs replacement
- The standard for pressure canning low-acid foods (green beans, meat, stock)
- USA made with a multi-decade lifespan
Cons
- Heavy, 15+ lbs empty
Instant Pot Duo 7-in-1 Electric Pressure Cooker 6-Quart vs All American 921 21.5-Quart Pressure Cooker/Canner: common questions
Which is better, the Instant Pot Duo 7-in-1 Electric Pressure Cooker 6-Quart or the All American 921 21.5-Quart Pressure Cooker/Canner?
Choose the Instant Pot Duo 7-in-1 Electric Pressure Cooker 6-Quart if you want pressure cooking mode replaces most slow cook recipes at 45 to 90 minutes instead of 8 to 10 hours. Choose the All American 921 21.5-Quart Pressure Cooker/Canner if you'd rather have no rubber gasket, metal-to-metal seal that never degrades or needs replacement. Overall we rank the Instant Pot Duo 7-in-1 Electric Pressure Cooker 6-Quart higher: #1 versus #3 in our Best Pressure Cookers list.
What is the difference between the Instant Pot Duo 7-in-1 Electric Pressure Cooker 6-Quart and the All American 921 21.5-Quart Pressure Cooker/Canner?
The Instant Pot Duo 7-in-1 Electric Pressure Cooker 6-Quart stands out because pressure cooking mode replaces most slow cook recipes at 45 to 90 minutes instead of 8 to 10 hours, while the All American 921 21.5-Quart Pressure Cooker/Canner stands out because no rubber gasket, metal-to-metal seal that never degrades or needs replacement. The trade-offs differ too: the Instant Pot Duo 7-in-1 Electric Pressure Cooker 6-Quart's main caveat is that slow cook mode runs 10 to 20 degrees hotter than a dedicated slow cooker, recipes need 25 to 30% less time, and the All American 921 21.5-Quart Pressure Cooker/Canner's is that heavy, 15+ lbs empty.
Is the Instant Pot Duo 7-in-1 Electric Pressure Cooker 6-Quart worth it over the All American 921 21.5-Quart Pressure Cooker/Canner?
For most buyers, yes: it's our #1 pick. Consider the All American 921 21.5-Quart Pressure Cooker/Canner instead if slow cook mode runs 10 to 20 degrees hotter than a dedicated slow cooker, recipes need 25 to 30% less time is a deal-breaker for you.