Avanti OR1533U3S Outdoor vs Summit CT663BKADA

Last updated: November 9, 2026

The Avanti OR1533U3S Outdoor is the better undercounter refrigerator overall, rated 3.6 to 3.1. The Avanti OR1533U3S Outdoor leads on warranty and value. The Summit CT663BKADA wins on capacity. The Avanti OR1533U3S Outdoor costs $603.17 less ($499 vs $1,102.17).

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.

Avanti OR1533U3S Outdoor vs Summit CT663BKADA

Which should you buy?

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every refrigerators undercounter refrigerator; a clear win is highlighted. How we rank explains each one.

Factor weightAvanti OR1533U3S OutdoorSummit CT663BKADA
Overall rating3.6/53.1/5
Value 30%70 $172.07 per cu ft ($499, 2.9 cu ft)56 $218.68 per cu ft ($1,102.17, 5 cu ft)
Capacity 15%13 2.9 cu ft85 5 cu ft
Installation 20%90 front venting for built-in use, rated for outdoor use35 front venting not stated, indoor use
Energy use 15%50 energy use not published (neutral score used)13 330 kWh a year
Noise 5%50 noise level not published (neutral score used)50 noise level not published (neutral score used)
Warranty 15%70 2-year warranty40 1-year warranty, 5 years on the compressor

Specifications

Avanti OR1533U3S OutdoorSummit CT663BKADA
Storage
Capacity2.9 cu ft5 cu ft
Fridge section-4.5 cu ft
Freezer section-0.6 cu ft
Defrost-Cycle (manual freezer)
Installation
Width14.6 in23.6 in
Height32.5 in32 in
Depth24.5 in23.5 in
Built-in (front venting)Built-in-
Outdoor useRated for outdoorIndoor
Safety listing-UL
Max ambient100 F-
Reversible doorYes-
Lock-No
Running
Energy use-330 kWh/yr
ENERGY STAR-Yes
Build
Weight69 lb100 lb
Warranty2 years1 year
Compressor warranty-5 years

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