Head to head · Updated Oct 11, 2026
Sunny SF-T723030 vs Sunny Active 400 Smart
Two Sunny treadmills with motorized incline and free apps — one arrives fully assembled with a wide belt, the other folds upright and connects over Wi-Fi.
Sunny Health & Fitness
Sunny Health & Fitness Fully Assembled Auto Incline Treadmill (SF-T723030)
- Top speed
- 10 mph
- Incline
- 15% auto
- Belt
- 53×20 in
- Max user
- 300 lb
Sunny Health & Fitness
Sunny Health & Fitness Active 400 Smart Wi-Fi Auto Incline Treadmill (SF-T724012)
- Top speed
- 9 mph
- Incline
- 12% auto
- Belt
- 50×16 in
- Max user
- 300 lb
Quick verdict
Which one should you buy?
The fully assembled SF-T723030 is the better treadmill: wider belt, steeper incline, faster top speed. Choose the Active 400 only if it must fold upright into a small room.
Choose the Sunny SF-T723030 if…
You want zero assembly, a wide 20 in belt and incline to 15%.
Check priceChoose the Sunny Active 400 Smart if…
Floor space is tight and you want an upright fold plus Wi-Fi app workouts.
Check priceEditor scores
How they stack up
- Sunny SF-T723030
- Sunny Active 400 Smart
Key differences
By the numbers
- Sunny SF-T723030 goes faster: 10 mph vs 9 mph
- Sunny SF-T723030 climbs steeper: 15 % vs 12 %
- Sunny SF-T723030 has the roomier belt: 53×20 in vs 50×16 in
- Sunny SF-T723030 has the bigger motor rating (claimed): 2.5 HP vs 2 HP
- Sunny Active 400 Smart is lighter to move: 108 lb vs 130 lb
- Sunny SF-T723030 is rated higher on Amazon: 4.4★ (6,362 ratings) vs 4.3★ (9,221)
Full specs
Spec by spec
| Spec | Sunny SF-T723030 | Sunny Active 400 Smart |
|---|---|---|
| Motor & speed | ||
| Motor (claimed) | 2.5 HP | 2 HP |
| Brushless motor | Yes | Yes |
| Minimum speed | 0.6 mph | 1 mph |
| Top speed | 10 mph | 9 mph |
| Incline | ||
| Max incline | 15 % | 12 % |
| Motorized (auto) incline | Yes | Yes |
| How the incline works | Motorized, 15 levels to 15% | Motorized, 15 levels to 12% |
| Belt & capacity | ||
| Belt length | 53 in | 50 in |
| Belt width | 20 in | 16 in |
| Max user weight (claimed) | 300 lb | 300 lb |
| Cushioning | Double-deck shock absorption | Shock absorption system |
| Size & storage | ||
| Footprint (L × W × H) | 63.8 × 30.9 × 44.1 in | 62.6 × 28.1 × 52 in |
| Folded / stored size | Handlebar folds down flat (about 11.4 in tall) | Folds upright to 38 × 28.1 × 53.3 in, soft drop |
| Machine weight | 130 lb | 108 lb |
| Handrail | Console with handlebar (folds down) | Console with side rails |
| Assembly | Arrives fully assembled | Partial assembly |
| Console & app | ||
| Display | LED with pulse grips | 3-window LED |
| App | SunnyFit (free) via Bluetooth | SunnyFit (free) via Wi-Fi/Bluetooth, casts to smart TV |
| Built-in programs | 24 | 26 |
| Remote control | No | No |
| Other | ||
| Warranty | 3-yr frame, 180-day parts | 3-yr frame, 180-day parts |
| Editor scores (0–10) | ||
| Motor & speed | 7 | 6 |
| Incline | 10 | 8 |
| Belt room | 9 | 5 |
| Sturdiness | 7 | 6 |
| Easy to store | 6 | 7 |
| Features | 7 | 8 |
| Value | 9 | 7 |
| Overall editor score | 8.0 | 6.6 |
“Best” marks the stronger value in each row. A dash means the value isn’t published. Sunny SF-T723030 wins 6 spec rows, Sunny Active 400 Smart wins 2. Scores follow our rating rules.
Pros & cons
What owners and specs say
Sunny SF-T723030
- Fully assembled
- Motorized incline to 15%
- Wide 20 in belt
- Free app, no membership
- 180-day parts warranty
- Too wide for some doorways
- Belt may need a first alignment
Sunny Active 400 Smart
- Motorized incline to 12%
- Folds upright with soft drop
- Free Wi-Fi app, no membership
- 26 built-in programs
- Narrow 16 in belt
- 9 mph top speed
- 180-day parts warranty