Sharp R-21LTF
#2 in Under 1,200 WFull review
A 1,000 W, 1.0 cu ft programmable commercial microwave for cafes and server stations. It adds 20 programs, 11 power levels and a two-year parts and labor warranty to the R-21L design.
Amazon $540$540
The Sharp R-21LTF is the better commercial microwave overall, rated 3.3 to 2.6. The Sharp R-21LTF leads on duty rating, warranty and capacity. The Amana RMS10TSA costs $182 less ($358 vs $540).
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.
Amana RMS10TSA
#9 in Under 1,200 WFull review
A 1,000 W, 0.8 cu ft touch-pad commercial microwave for break rooms, vending and convenience stores. Twenty programs and four cooking stages cost only about $50 more than the dial version.
Amazon $358$358
Which should you buy?
- Choose the Sharp R-21LTF for duty rating (maker rates it medium duty vs maker rates it light duty), warranty (2-year parts and labor, 3 years on the magnetron vs 1-year parts and labor, 3 years on the magnetron) and capacity (1 cu ft cavity vs 0.8 cu ft cavity).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every under 1,200 W commercial microwave; a clear win is highlighted. How we rank explains each one.
| Factor weight | Sharp R-21LTF | Amana RMS10TSA |
|---|---|---|
| Overall rating | 3.3/5 | 2.6/5 |
| Power 25% | 8 1,000 W output | 8 1,000 W output |
| Capacity 15% | 71 1 cu ft cavity | 43 0.8 cu ft cavity |
| Programmability 25% | 72 20 programs, 3 stages, 11 power levels | 67 20 programs, 4 stages, 5 power levels |
| Duty rating 15% | 50 maker rates it medium duty | 0 maker rates it light duty |
| Warranty 20% | 65 2-year parts and labor, 3 years on the magnetron | 30 1-year parts and labor, 3 years on the magnetron |
Specifications
| Sharp R-21LTF | Amana RMS10TSA | |
|---|---|---|
| Cooking | ||
| Output power | 1,000 W | 1,000 W |
| Duty rating | Medium | Light |
| Energy feed | - | Bottom |
| Cavity | ||
| Capacity | 1 cu ft | 0.8 cu ft |
| Inside dimensions | 13.9 x 14.6 x 8.1 in (W x D x H) | 13 x 13 x 7.8 in (W x D x H) |
| Largest pan | - | 12 in platter |
| Interior | Stainless steel | Stainless steel |
| Controls | ||
| Controls | Touch | Touch |
| Stored programs | 20 | 20 |
| Memory pads | - | 10 |
| Cooking stages | 3 | 4 |
| Power levels | 11 | 5 |
| Longest timer | - | 30 min |
| Braille keypad | Yes | - |
| Door handle | Trigger handle | Grab handle |
| Electrical | ||
| Voltage | 120 V | 120 V |
| Plug | NEMA 5-15 | NEMA 5-15 |
| Input power | 1,600 W | 1,500 W |
| Current draw | 14 A | 13 A |
| Build | ||
| Outside dimensions | 20.5 x 16 x 12.1 in (W x D x H) | 20.1 x 15.9 x 12.2 in (W x D x H) |
| Weight | 37 lb | 30 lb |
| Stackable | - | No |
| Certifications | - | UL, ETL, NSF, CSA |
| Parts and labor warranty | 2 years | 1 year |
| Magnetron warranty | 3 years | 3 years |