Chamber vs External Vacuum Sealer
External (suction) sealers are the $30-80 entry — they suck air from a bag. Chamber sealers are the $300-600 pro tools — the whole chamber evacuates, so liquids seal perfectly. For sous vide, the external sealer is usually enough; for marinades, soups, and heavy commercial use, the chamber wins.
Our top pick
FoodSaver External Sealer
The classic suction sealer — cheap, compact, perfect for dry-ish sous vide bags.
Free shipping on eligible Amazon items · 30-day easy returns · you earn on anything bought within 24h
As an Amazon Associate we earn from qualifying purchases.
Quick comparison
| Pick | Why we like it | |
|---|---|---|
| FoodSaver External Sealer | The classic suction sealer — cheap, compact, perfect for dry-ish sous vide bags. | View → |
| Chamber Vacuum Sealer | Pro-grade chamber sealer — seals liquids, soups, and marinades flawlessly. | View → |
FoodSaver External Sealer
Editor’s PickThe classic suction sealer — cheap, compact, perfect for dry-ish sous vide bags.
- + Cheap
- + Compact
- + Easy
- + Great for dry food
- − Can't seal liquids
- − Bag costs add up
- − Roll bags only
Free shipping on eligible items
Pro-grade chamber sealer — seals liquids, soups, and marinades flawlessly.
- + Seals liquids
- + No bag ridge
- + Pro results
- + Cheaper bags long-term
- − Expensive
- − Big and heavy
- − Overkill for light use
Free shipping on eligible items
Buying advice
Buy an external sealer first — it handles 90% of sous vide and meal prep at a fraction of the cost. Upgrade to a chamber sealer when you consistently seal liquids (soups, marinades, wet brines) or process a lot of food. The chamber's ability to seal liquid-filled bags is the one thing an external can't do.
FAQ
Why can't external sealers handle liquids?
They suck air from the bag opening — liquid gets sucked toward the seal before it closes. Chamber sealers evacuate the whole chamber, so liquids stay put.
Is a chamber sealer worth $300+?
Only for heavy users — meal preppers sealing soups, fishermen, or pros. Casual sous vide cooks are fine with an external.
Do bags cost more with external sealers?
Yes — external sealers need textured bags or rolls, which cost more per foot than the plain bags chamber sealers use.
Can I sous vide with an external sealer?
Yes — that's the most common setup. Dry-seasoned meat seals perfectly; just avoid sealing watery marinades.
What's the water displacement trick?
A no-machine way to remove air: submerge a partially zipped bag in water, letting pressure push air out, then seal. Works with freezer bags.
Ready to cook perfectly?
Our top pick for this guide — check today’s price and clip any on-page coupon on Amazon:
FoodSaver External Sealer
The classic suction sealer — cheap, compact, perfect for dry-ish sous vide bags.
As an Amazon Associate we earn from qualifying purchases.
Want exact temps and times? Use our free sous vide calculators.