How to Choose a Pressure Canner

Decision 1: what size do you need?

Canners come in four sizes: 4-quart, 8-quart, 16-quart, and 23-quart. Size tells you how many jars fit per batch. More jars per batch means fewer sessions.

The 4-quart and 8-quart hold 4 to 7 pint jars. They work for one or two people who can small amounts. Most homesteaders find them too small. One row of green beans can take three or four loads.

The 16-quart holds 7 quart jars in one layer. This is the right size for a family of four. One batch takes about 90 minutes. You can do two or three batches in an afternoon.

The 23-quart holds 7 quart jars or 14 pint jars in two layers. Pick this if you grow a lot and want to process more per session. The tradeoff is weight. Full of water it weighs 35 to 40 lbs. You need a sturdy stove and help lifting it.

Go with the 16-quart or 23-quart. Do not buy small and upgrade later. Running 4 small batches to put up one garden row is frustrating.

Decision 2: aluminum or stainless steel?

Most canners are aluminum. The Presto, the Mirro, and the All American are all aluminum. Stainless canners exist but cost more.

Aluminum

Aluminum heats up fast and costs less. Some people worry about acid reacting with the metal. In practice this is not a real problem. You are not cooking food in the canner. Sealed jars never touch the walls. Aluminum is safe and practical for most people.

One real limit: aluminum does not work on induction stoves. If you have induction, you need stainless or a canner with an induction-safe base.

Stainless steel

Stainless is tougher. It does not pit or stain. It works on induction. It costs more and weighs more.

For gas or electric coil stoves, aluminum works fine. Buy stainless when you have an induction stove or want the best build quality.

Decision 3: dial gauge or weighted gauge?

This is the part that confuses most first-time buyers. Short version: weighted gauge is easier, dial gauge is more exact.

Weighted gauge (jiggler)

A weighted gauge is a small weight that sits on the steam vent. When pressure hits the right level, the weight jiggles and lets steam out. Keep the jiggle rate at 1 to 4 per minute. No gauge to read. No yearly testing needed.

Most weighted gauges only go to 10 lbs. Above 1,000 feet, you need 15 lbs. Some canners (like the All American) include a 15 lb weight. Check before you buy.

Dial gauge

A dial gauge shows the exact pressure on a numbered dial. You can set any level you want. Good for altitude work.

The catch: the gauge must be tested once a year at your local extension office. A dial that reads 11 lbs when pressure is really 8 lbs is a safety issue.

Some canners include both. The All American 921 has a dial gauge and a weighted overpressure plug. You get both options in one unit.

Which canner for which situation

What to read next

The two most popular canners are the All American and the Presto. Our full All American vs Presto comparison covers size options, price, stove type, and which holds up best over 10 to 20 years.

Still deciding between preservation methods? See the full breakdown of canning vs freeze drying vs dehydrating.

Building your canning setup from scratch? The complete canning supplies guide covers jars, tools, and everything beyond the canner itself.