The Cosmo COS-ERD304K-BK is a 30-inch slide-in electric range with radiant heating, a 4.9 cu ft oven, and a matte black finish at $1,050. Ten early buyers rate it 4.7 stars, which is a promising signal for a newly listed product.
Cooks who want a slide-in electric range with a sleek matte black finish at a mid-range price. The early 4.7-star rating makes it a credible option for buyers willing to lean on early adopter feedback rather than a deep review pool.
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Anyone who needs gas cooking or a large-capacity oven should look elsewhere, 4.9 cu ft is slightly compact, and this is an electric radiant unit only. Buyers who want 100+ reviews before committing should also wait.
Capacity 4.9 cu ft
Heating Radiant
Burners / elements 4
Oven racks 2
Installation Slide-In
Width 29.88 in
Priced 30% below the category median ($1,499.00 across 135 tracked models)
Burners / elements of 4 - lower than 60% of the 135 models we track
Width of 29.88 in - narrower than 73% of the 135 models we track
Our scorecard
4.1/5overall
Owner rating4.7/5
4.7 average across 10 owner ratings
Value for money4.1/5
$214 per cubic foot, below the category median
Popularity4.3/5
10 owner reviews, more than most models here
Storage space2.5/5
4.9 cu ft, roomy for this category
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other kitchen ranges, cooktops, wall ovens, range hoods and microwaves we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
At $1,049.99, the COS-ERD304K-BK occupies the mid-range of the slide-in electric category. The 4.9 cu ft oven is workable for most households, though it is on the smaller side compared to competitors offering 5.0-5.4 cu ft at similar prices. Radiant heating, smooth glass-ceramic cooktop elements, is the cooking surface technology, which is easy to clean and responds quickly to temperature changes. The four-burner layout suits most cooking scenarios without the added cost of a six-burner cooktop.
The matte black finish is a standout feature at this price point. Most sub-$1,500 slide-in ranges come in stainless steel; the matte black gives a modern, fingerprint-resistant look that suits contemporary kitchen designs. The 29.88-inch width fits a standard 30-inch opening, the unit runs on 240 volts, and knob controls handle all functions. Two oven racks are included.
With 10 reviews averaging 4.7 stars, this model has generated genuine early enthusiasm. The sample is still small, but the consistency of the high rating is a positive signal. At 148.4 lb, it is lighter than most competing slide-in ranges, which simplifies installation. The combination of matte finish, respectable specs, and competitive pricing gives this range real appeal in its category.
Pros
4.7-star rating from 10 early buyers indicates strong initial satisfaction
Matte black finish is distinctive and fingerprint-resistant
Radiant glass-ceramic cooktop is easy to clean and heats quickly
240V power delivery supports full electric cooking performance
148.4 lb weight is lighter than most slide-in ranges, easing installation
Cons
Only 10 reviews, too small a sample for long-term reliability conclusions
4.9 cu ft oven is slightly below average for this price tier
No convection heating listed in available specs
Fuel type limited to electric, no option for gas cooking
Specifications
Capacity
4.9 cu ft
Heating
Radiant
Burners / elements
4
Oven racks
2
Installation
Slide-In
Width
29.88 in
Controls
Knob
Finish
Matte
Dimensions
27.58 X 29.88 X 37.05 In
Weight
148.4 lb
Voltage
240 Volts
Smart
Not Smart Home Compatible
Performance notes
The radiant cooktop uses glass-ceramic heating elements, delivering smooth, responsive heat across four burner zones in a 29.88-inch-wide surface. The 4.9 cu ft oven handles standard roasting and baking tasks across two racks. The 240V connection ensures the oven and burners operate at full rated power. Slide-in installation places the cooktop flush with countertops, eliminating side gaps. Knob controls are direct and require no learning curve. At 27.58 x 29.88 x 37.05 inches, the dimensions fit standard 30-inch kitchen cutouts.
What buyers say
Ten buyers have rated this range at an average of 4.7 stars, which represents a strong early showing. The sample is too small to draw firm conclusions about durability or long-term performance, but the consistent high scores suggest early buyers are satisfied with build quality and cooking results. No reviews were available for detailed sentiment breakdown.
This is an electric range. It uses radiant heating elements under a glass-ceramic cooktop surface and runs on a 240-volt connection. It is not compatible with a gas hookup.
Does this range require a 240-volt outlet?
Yes. The COS-ERD304K-BK operates on 240 volts, which is standard for full-size electric ranges. Most kitchens with existing electric range connections are already wired for 240V, but confirm your outlet type before purchasing.
How does matte black differ from standard black stainless?
Matte black has a flat, non-reflective surface that resists fingerprints and smudges more effectively than glossy or mirrored finishes. Black stainless steel typically has a slightly sheen or brushed look. Matte black tends to maintain a cleaner appearance between wipe-downs in daily kitchen use.
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