Thermoelectric vs Compressor Kegerator: Which Cooling System to Pick

What the Two Cooling Systems Are

The cooling system is the part of a kegerator that keeps the cabinet cold. Two main types appear on listings: thermoelectric and compressor. The type is usually stated in the title or the bullet list, and it shapes how you think about size, noise, and placement.

A compressor system works like the one inside a standard refrigerator. It uses a refrigerant cycle to move heat out of the cabinet. Compressor kegerators are the common choice for full-size, undercounter, and commercial models. A thermoelectric system uses a solid-state heat pump, sometimes called a Peltier device, to move heat. It has no moving compressor, so it tends to run quieter. Thermoelectric units appear most often in compact and portable kegerators.

For a deeper look at the compressor itself, see kegerator compressor type. For the control side, see temperature control types.

How Listings Name the Cooling System

In a listing title, the cooling system may appear as "compressor" or "thermoelectric". Some listings use "Peltier" for the thermoelectric type. A bullet list may say "cooling type: compressor" or "thermoelectric cooling". If a listing never mentions the cooling method, treat that as a missing detail, not a promise.

When you see a listing that does not name the cooling system, you can still compare the temperature range and cabinet width, but you lose the ability to judge whether the unit uses a compressor or a thermoelectric system. The cooling system is one of the first details to read on a kegerator listing.

When you compare two listings, the cooling system is a stated detail you can put side by side. It tells you which cabinet size the maker intends for that model. It does not tell you how well the unit will handle a specific room, because that depends on the room and the load, which the listing may not describe.

• Words to look for in the title or bullets: compressor, thermoelectric, Peltier, solid state, fan cooled.

Temperature Range and Efficiency

Every kegerator listing should state a temperature range for the cabinet. The range is a spec you can compare directly between a thermoelectric and a compressor model. Compressor kegerators often list a wider range, while thermoelectric units usually list a narrower one. Read the range in the bullet list or the spec sheet before you compare.

Energy efficiency is a separate question. The ENERGY STAR program notes that certified refrigerators are about 9 percent more energy efficient than models that meet the federal minimum standard, and certified coolers up to 20 percent more efficient. That label applies to the whole product, not only the cooling system. If a kegerator listing carries the label, the maker has met that standard. If it does not, you have no stated number to compare.

For more on what a temperature range means on a listing, see temperature range spec.

Noise and Typical Use

Noise is a practical concern for a home bar or a kitchen. Thermoelectric systems have no compressor, so they tend to run quieter. Compressor systems are louder, but they are also the system used in most full-size and commercial kegerators. If noise matters to you, look for a listing that states a noise level; many do not.

Typical use: a compressor kegerator is the common pick for a full-size cabinet with two or more taps, for an undercounter fit, and for a shared space or a small venue. A thermoelectric kegerator is more common in a compact cabinet with a single tap, or in a unit you plan to move around. See full size kegerators for the types of listings that use each system.

For more on noise, see noise level.

Choosing for Your Space

The choice between thermoelectric and compressor is not a rating. It is a fit question. A quiet, compact thermoelectric unit can be the right pick for a small home bar, while a full-size compressor unit makes sense for a busy shared space. Start from your cabinet width, tap count, and placement, then read the cooling system on the listings that fit. For a typical dual-tap home setup, see dual tap kegerators.

• Cabinet width: a 15 inch cabinet is often a compact thermoelectric unit; a 24 inch cabinet is usually a compressor unit.
• Taps: a single tap is common on thermoelectric units; dual and triple taps appear on compressor models.
• Commercial: a compressor system is the standard for commercial listings.
• Conversion: a conversion refrigerator has its own compressor; the kit adds the tower and taps.
• A narrow space: a compact compressor unit exists in the 15 inch width, so a compressor is not only for full-size cabinets. Compare the stated width on each listing.

What to pick for your situation

Questions

Is a thermoelectric kegerator quieter than a compressor one?

Generally yes, because a thermoelectric system has no compressor. Some listings state a noise level; read it before choosing. Many compact listings emphasize quiet operation.

Which cooling system is more energy efficient?

There is no blanket answer. Look for an ENERGY STAR label on the listing. The ENERGY STAR program states that certified refrigerators are about 9 percent more efficient than the federal minimum, and certified coolers up to 20 percent more efficient.

Can a thermoelectric kegerator hold a full-size keg?

Thermoelectric units usually appear in compact listings. Read the stated keg capacity on the listing; the system alone does not tell you what the cabinet can hold.

Is a compressor kegerator always the better option?

No. A compressor system is the common choice for full-size and commercial units, but a thermoelectric unit can be the right pick for a compact, quiet home bar. Compare stated details first.

What should I check before buying a compressor kegerator?

Check the stated temperature range, cabinet width, tap count, and whether the listing names the cooling system. See the buying guide for a full checklist.