Sunny SF-T4400 vs SF-T7515

Sunny Health & Fitness make some of the most popular treadmills. We have an in-depth look at two of their most popular models, the Sunny SF-T4400 vs SF-T7515 – which is the best for you?

Sunny SF-T4400 vs SF-T7515 – Specifications

Sunny SF-T4400Sunny SF-T7515
Sunny Health & Fitness Folding Treadmill
Sunny Health & Fitness SF-T7515 Treadmill
Product Weight103lbs121lbs
Dimensions62" L x 25.5" W x 50" H64.5 x 28 x 50.5
Maximum Weight Capacity220lbs250lbs
Tread Belt49" L x 15. 5" W49.5" L x 16.5" W
Speed0.5 - 9 mph1-8 mph
Built-in Workout Programs912
Incline20 degrees0-6.8 degrees
DisplayDigital MonitorBacklit LED display
Design and FeaturesDigital monitor with device holder
Manual mode option
Power saving function
Start, stop and adjust speed
Built-in handrail controls
Bottle holder
Bluetooth wireless connectivity
Phone and music function and MP3 cord
Integrated BMI calculator
Auto-Incline quick buttons
Storage/FoldabilityFolded Dimensions: 36" L x 25.5" W x 58" HFolded Dimensions: 40.25" L x 28" W x 54.75" H
Motor HP2.2 CHP2.2 HP
Warranty3-year frame warranty
180 days other parts & components
3-year frame warranty
180 days other parts & components
Cost ( PriceCheck Price

Sunny SF-T4400 vs SF-T7515 – Similarities

Both treadmills have the same motor rating

  • Both the Sunny SF-T4400 and Sunny SF-T7515 have a 2.2 CHP.

Both treadmills have a similar warranty

  • The Sunny SF-T4400 and Sunny SF-T7515 have a 3-year warranty for the frame and 180 days for parts and components.

Sunny SF-T4400 vs SF-T7515 – Differences

Both the Sunny SF-T4400 and SF-T7515 have different product weights

  • The Sunny SF-T4400 weighs 103lbs, while the SF-T7515 is heavier at 121lbs.

Both treadmills have different dimensions

  • The Sunny SF-T4400 has a length of 62”, a width of 25.5”, and a height of 50”.
  • The Sunny SF-T7515 has a length of 64.5”, a width of 28”, and a height of 50.5”.

The Sunny SF-T4400 and SF-T7515 has a different maximum weight capacity

  • The Sunny SF-T4400 has a maximum weight capacity of 220lbs, while the SF-T7515 can cater to up to 250lbs.

Both treadmills have different tread belt sizes

  • The Sunny SF-T4400’s tread belt is 49” long, and 15.5” wide, while the SF-T7515’s tread belt is 49.5” long, and 16.5” wide.

 Both treadmills have a slightly different maximum speed

  • The Sunny SF-T4400 has a speed range of 0.5 to 9 mph, while the SF-T7515 is capable of 1 to 8 mph.

Both the Sunny SF-T4400 and SF-T7515 have different numbers of built-in workout programs

  • The Sunny SF-T4400 only has nine built-in workout programs, while the Sunny SF-T7515 has a total of 12.

Both treadmills have different incline rates

  • The Sunny SF-T4400 has up to 20 degrees incline, while the Sunny SF-T7515 has 0 to 6.8 degrees.

Both offer different screens for displaying functions

  • The Sunny SF-T4400 has a digital monitor, while the SF-T7515 has a backlit LCD monitor.

Both treadmills offer different design and features

  • The Sunny SF-T4400 has built-in handrail ‘start, stop, adjust speed’ controls, power-saving functions, and a manual mode option. It features a digital monitor, a device holder, and a water bottle holder.
  • The Sunny SF T-7515 has an integrated BMI calculator and an auto-incline quick button. It features a Bluetooth wireless connectivity function, and phone & music function with MP3 cord.

Both treadmills have different folded dimensions

  • The Sunny SF-T4400 has dimensions of 36” length, 25.5” width, and 58” height.
  • The Sunny SF-T7515 has dimensions of 40” length, 28” width, and 54.75” height.


The Sunny SF-T4400 and SF-T7515 are both stable and easy to use treadmills. Both models are quite different, and choosing between the two would depend on your preferences.

Here are some of their notable differences you might want to consider:

  • The difference is almost unnoticeable, but the Sunny SF-T4400 takes a little less space than the SF-T7515.
  • The SF-T7515 has a higher maximum weight capacity.
  • The Sunny SF-T4400 has a steeper incline range of up to 20 degrees compared to the SF-T7515.
  • The Sunny SF-T7515 has more built-in workout programs than the Sunny SF-T4400.