COSMO Stellar COS-RES304SS Electric Range 30 Inch
- 4.8 cu. ft. single oven with convection fan and air fry mode
- 4 radiant burners on a ceramic glass cooktop
- 3000W dual element burner, plus one 2100W and two 1200W
- 240 Volts electric hookup
- 27.76"D x 29.88"W x 36.18"H, 156.5 pounds
- Air fry tray and anti-tip bracket in the box
- 1 year limited warranty
Last refreshed Jun 13, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A sensible electric range for everyday cooking and baking, with convection, air fry and steam clean in one oven. Warranty coverage is short, so weigh that before buying.
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ASIN: B0G1VJLZX5Model: COS-RES304SSCategory: Freestanding Ranges
Overview
A home cook swapping out an old electric range gets a ceramic glass top with a dual element burner and a convection oven that also air fries. The listing classes it as a slide-in unit with a storage drawer below, and it needs a dedicated high-voltage range circuit.
Convection plus an air fry mode with its own tray means one oven covers baking, roasting and crisping without a countertop gadget. The dual element burner adapts to small and large pans. Warranty coverage is limited to a short term, and the listing gives no oven temperature range.
Who it's for
Suited to a household cooking daily meals on an electric line already wired for a range. Cooks who need a gas flame or a long warranty should look elsewhere.
Pros and cons
- Air fry tray included
- Dual element burner adapts to pan size
- Convection fan for even baking
- Steam clean loosens baked-on residue
- Short limited warranty term
- Oven temperature range not listed
- Requires a dedicated high-voltage circuit
- Only two oven racks supplied
Performance notes
Even baking depends on the convection fan circulating heated air around the cavity, so rack placement and pan spacing matter. Radiant elements under glass heat and cool more slowly than a flame. The dual element lets a small ring heat a small pot without powering the outer zone.
Specifications
| Brand | Cosmo |
|---|---|
| Model | COS-RES304SS |
| Dimensions & fit | |
| Item weight | 156.5 pounds |
| Item Dimensions D x W x H | 27.8 × 29.9 × 36.2 inches |
| Range width | 30 inches |
| Capacity & performance | |
| Capacity | 4.8 cu ft |
| Heating Element | Radiant |
| Number of Heating Elements | 4 |
| Power & efficiency | |
| Fuel Type | Electric |
| Voltage | 240 volts |
| Efficiency | Efficient |
| Burner wattage | 3000 watts |
| Construction & materials | |
| Material Type | Stainless steel |
| Finish Types | Stainless steel |
| Compatibility & installation | |
| Installation Type | Slide-In |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Form Factor | Single Oven |
| Number Of Racks | 2 |
| Control Type | Knob |
| Drawer Type | Storage |
| Oven features | Convection, air fry, steam clean |
| Cooktop surface | Ceramic glass |
Frequently asked questions
Can the Cosmo COS-RES304SS air fry?
Yes. Air fry is one of the oven functions, and an air fry tray is included to improve air circulation around the food.
Is the Cosmo COS-RES304SS a gas range?
No. It is an electric range with a ceramic glass cooktop and radiant elements.
How do I clean the oven on the COS-RES304SS?
Use the steam clean function. It loosens baked-on residue with heat and moisture so spills are easier to wipe away.