A roomy, inexpensive 208/240 V half-size oven for small kitchens that already have the circuit and want faster recovery than a 120 V model.
Amazon $548.49The Avantco CO-28 rates 3.6 among quarter and half-size countertop commercial convection ovens; the KoolMore KM-CTCO-44 rates 3.2 among full-size electric ones. The Avantco CO-28 costs $570.43 less ($548.49 vs $1,118.92).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

The lowest-cost listed way to bake full-size sheet pans, for small restaurants and bakeries with light daily volume.
Amazon $1,118.92Scores side by side
These two sit in different oven type classes (quarter and half-size countertop and full-size electric), and each is scored against the reference points for its own class, so a rating says how well each does among its own oven type peers. How we rank explains each factor.
| Factor weight | Avantco CO-28 | KoolMore KM-CTCO-44 |
|---|---|---|
| Overall rating | 3.6/5 | 3.2/5 |
| Capacity 25% | 100 4 half-size pans, 2 full-size pan equivalents | 33 4 full-size pans, 4 full-size pan equivalents |
| Power 15% | 54 2.8 kW | 13 4.6 kW |
| Top temperature 10% | 100 up to 550 F | 100 up to 550 F |
| Features 15% | 0 none of the scored features | 0 none of the scored features |
| Listing 15% | 40 safety listed | 100 sanitation listed, safety listed |
| Warranty 10% | 0 warranty not published, scored as none | 33 1-year parts and labor |
| Value 10% | 96 $274 per full-size pan | 95 $280 per full-size pan |
Specifications
| Avantco CO-28 | KoolMore KM-CTCO-44 | |
|---|---|---|
| Capacity | ||
| Pan capacity | 4 half-size pans | 4 full-size pans |
| Full-size pan equivalents | 2 | 4 |
| Racks included | 4 | 4 |
| Cavity capacity | 2.3 cu ft | 4.4 cu ft |
| Heating | ||
| Fuel | Electric | Electric |
| Heating power | 2.8 kW | 4.6 kW |
| Temperature range | 150 to 550 F | Up to 550 F |
| Controls | ||
| Controls | Manual | Manual |
| Electrical | ||
| Voltage | 208/240 V | 240 V |
| Plug | NEMA 6-20P | - |
| Build | ||
| Weight | - | 116.8 lb |
| Certifications | ETL, CE | ETL, ETL Sanitation |
| Parts and labor warranty | - | 1 year |