Change how you build your cardiovascular fitness with the Sunny SF-T7724 Energy Flex Treadmill. The space-saving running deck (51.5L x 18W inches) has a responsive shock absorption system. For example, the cushioned belt on the flex treadmill absorbs impact on each step, which can reduce stress on your lower body joints as you exercise.
This treadmill can achieve speeds between 0.6 MPH and 10 MPH for walking and running. Control your workout intensity with the 15 levels of automatic incline. The sturdy and foldable frame on the SF-T7724 has a maximum user weight of 240 lbs (109 kg). Fold the treadmill deck upward to save space when not in use.
Track your cardiovascular performance on the Sunny SF-T7724 energy flex treadmill with the integrated pulse sensor grips. Use the backlit fitness monitor to track speed, time, distance, calories burned, pulse, and incline level. In addition, you’ll customize your workout experience with three countdown workouts, three user-customized workouts, a BMI calculator, and 16 preset programs.
Learn more in my complete review below!
Product: Sunny SF-T7724 Energy Flex Treadmill
Warranty: Frame 3 years / Parts 180 days
My rating: is 8/10
Affiliate Disclosure: As a Sunny Health & Fitness Affiliate Program participant, I earn commissions on purchases made through links in the post. Full disclosure
Details and Specifications
- Assembled dimensions: 69L x 30W x 54.5H inches (175L x 76W x 138H cm)
- Tread belt dimensions: 51.5L x 18W inches (131L x 46W cm)
- Assembled weight: 125.7 lbs (57 kg)
- Supported weight: 240 lbs (109 kg)
- Motor: 2.5 HP, 0.6 – 10 MPH
- Incline: Motorized, 15 levels
- Console: 16 preset programs, three countdown programs, three user programs
- Extras: Bluetooth speakers, device holder, bottle holders
- Warranty: Frame 3 years / Parts 180 days
SF-T7724 Frame Construction
The Sunny SF-T7724 Energy Flex treadmill features a rectangular steel tubing frame. However, it also integrates several ABS plastic parts. For example, the side rail covers, motors, console casing, and several other small covers are made from a durable thermoplastic material. In addition, all the steel tubes come coated with a corrosion-resistant light gray paint finish.
The machine is not too large. With all the parts assembled, it is approx. 69″ (175 cm) long and 30″ (76 cm) wide, while its highest point is the top of the console, which reaches approx. 54.5″ (138 cm) above the floor level.
It is advisable to allow a few feet of clearance all around the machine for safe usage, at least two feet on each side and three feet at the rear.
This Sunny Health & Fitness treadmill is foldable. In addition, its deck can fold up, which allows you to save some space when it is not in use. It also allows you to vacuum underneath it easily.
The folding mechanism uses a hydraulic cylinder that slowly lowers the deck when unfolded. Also, with the deck folded, the unit’s footprint becomes 44.75″L x 30″W (114 x 76 cm), while its height gains a few inches.
The treadmill is relatively heavy as well. Its net weight is approx—125.7 lbs (57 kg). Thus, two people should carry the packaged unit. However, one person can quickly relocate the treadmill as its front base has transport wheels once assembled.
The Sunny SF-T7724 energy flex treadmill offers a running surface of 51.5″ (131 cm) long and 18″ (46 cm) wide. Thus, it comfortably accommodates users up to 6’2″ (188 cm). In addition, taller persons can still use this machine, but they may not benefit from a complete range of motion if running at high speeds.
The belt has multiple layers with a rubberized top coating to provide a superior grip for your footwear. In addition, the crowned rollers increase the lifespan of the belt. They integrate sealed bearings for a smooth motion.
The unit’s deck is pretty durable. It has a maximum user weight limit of 240 lbs (109 kg) which is not bad for a home-use treadmill. It integrates four pairs of cushioning elements, and the deck board also has a bit of flex.
Therefore, running on this treadmill less impacts your joints and back than on asphalt or concrete.
Last but not least, the deck’s step-up height is approx—7″ (17 cm). The incline adds a few inches at the front of the deck when set to the maximum level. Therefore, placing and using this treadmill in a room with a ceiling at least 15″ (38 cm) higher than the tallest user’s height is advisable.
SF-T7724 Incline system
The Sunny SF-T7724 energy flex treadmill comes equipped with a motorized incline system. Therefore, you will need to connect the machine to a power source to adjust the incline. However, it also means adjusting the incline during your workout. Furthermore, the console can change the pitch automatically when an incline program is selected.
The incline system consists of a small lift integrated under the front section of the deck and a motor (different from the drive motor). Therefore, when you adjust the incline from the console or when an incline program is in use, the motor powers the lift and elevates or lowers the front part of the deck.
It’s important to note with the incline set to 0, the machine’s running surface is not perfectly horizontal. It has approx—1.65 ° of pitch. Also, the treadmill only offers incline possibilities. You cannot decline the belt to have it higher at the rear, such as the NordicTrack Commercial 2450 treadmill.
The machine’s incline system has 15 levels, ranging from 1.65° (2.9%) to 6.1° (10.7%). In addition, the console has buttons for gradual incline adjustments and quick incline selection for levels 3, 6, 9, and 12. The treadmill also has controls for gradual incline adjustment integrated into the left handrail.
The Sunny SF-T7724 Energy Flex is an electric treadmill and requires a 110V external power source. It comes with a power cord featuring a U.S. standard plug. The connector for the power cord is at the front of the deck next to the ON/OFF switch.
The machine’s motor is a 2.5 HP peak power motor designed to provide a decent performance without overheating, even if the user is close to the specified maximum weight limit. Therefore, it is advisable to let the machine rest for at least 10 minutes after every two hours of use.
The treadmill offers a speed range between 0.6 MPH and 10 MPH. The speed adjustment increments are 0.1 MPH, so you can easily adjust your pace when changing the speed.
The console controls gradual speed adjustment and quick speed selection controls for 2 MPH, 4 MPH, 6 MPH, and 8 MPH. The right handrail of the machine also integrates gradual speed controls.
The machine’s motor does not generate too much noise when in use. However, depending on your running technique, weight, floor type, running gear, and other factors, your cadence may generate more or less noise. But as a general idea, the noise of the motor should not cover the sound of a TV set on a moderate volume level.
The Sunny SF-T7724 energy flex treadmill comes equipped with a pretty standard console. It features an LCD with a blue LED backlight divided into six sub-sections. It shows time, speed, incline, distance, calories, pulse, the selected program, and the segments of the program.
The speed and distance default to Imperial units, but the console can convert them to metric units. The pulse reading function is hand-grip only. Unfortunately, the machine cannot read your pulse from a wireless transmitter, so you must hold on to the sensors integrated into the side rails.
The console does not have online connectivity and is not compatible with any fitness apps. However, it has plenty of programs to keep you motivated. To begin with, it has the Manual Mode, which allows you to adjust the speed and incline as you run.
Next, there are 16 preset programs with different segment layouts. Each one has 16 segments. All of them control both the speed and incline. Finally, the console has three user-defined programs, countdown modes, and a BMI calculator.
The user-defined programs allow you to personalize each workout segment and create custom workouts. In addition, the countdown modes will enable you to select a workout target for time, distance, and calories.
After choosing a target for one of these metrics, the console will count down from that value until it reaches zero. For example, the BMI function calculates your body mass index based on age, gender, height, and weight.
Other notable console features are the Bluetooth speakers, the device holder, and the bottle holders. The speakers are on each side of the console keypad. They connect to your phone via Bluetooth so you can play music.
There is also an AUX port and a microphone port, so you can use headphones and a microphone to talk on the phone through the console.
The device holder consists of a small shelf under the console display. In addition, the console has molded bottle holders on the dashboard; they’re near the speakers, one on each side of the console.
SF-T7724 Assembly and Maintenance
This Sunny Health & Fitness treadmill doesn’t require too much assembly. It comes essentially pre-assembled and folded. But first, you must unfold it and secure the two upright bars in the required position and the console.
Therefore, it shouldn’t take more than 20-30 minutes of your time. All the necessary tools come with the machine, and the manual provides precise assembly instructions.
Once completed, you will have to lubricate the belt with the provided lubricant. After this, lubrication requires every 1-2 months, depending on usage. Another maintenance aspect is keeping the machine clean, especially the belt, to prevent dirt or small object from being caught in the motor.
It’s also advisable to periodically inspect your treadmill to ensure that all the parts hold tight in their places and everything still functions properly.
- Sturdy deck – can support users up to 240 lbs;
- Folding design;
- Soft-drop unfolding mechanism;
- Transport wheels;
- Significant cushioning elements integrated into the deck;
- 15 levels of automatic incline;
- Speed settings up to 10 MPH;
- Pulse sensors integrated into the side grips;
- Speed and incline controls integrated into the side grips;
- Low power consumption;
- Multi-window LCD which tracks time, distance, speed, incline, calories, and pulse;
- 16 preset workout programs;
- Three-user programs;
- Goal settings for time, distance, and calories;
- BMI function included;
- Device holder included;
- Bottle holders included;
- Bluetooth speakers;
- Headphone and microphone ports;
- Little maintenance is required;
- Excellent warranty.
- No preset heart rate programs;
- No online connectivity.
Sunny SF-T7724 Energy Flex Treadmill Summary
The Sunny Health & Fitness Energy Flex SF-T7724 is a treadmill for home use. It features a 2.5 HP motor, a 15-level motorized incline system, and a console with multiple workout programs.
It is also a pretty sturdy machine with a maximum weight limit of 240 lbs and offers a running platform of 51.5″L x 18″W. Moreover, it’s an excellent treadmill for light to high-intensity workouts, muscle toning, stamina development, interval training, and weight loss.
I hope you found this article helpful and informative. Would you please speak up if you have anything you’d like to share on the topic or any opinions about my website? I look forward to your comments, questions, and the sharing of ideas.
Please remember that you should consult your physician to determine if you have any medical or physical conditions that could risk your health and safety or prevent you from using the equipment properly. In addition, your physician’s advice is essential if you are taking medication that affects your heart rate, blood pressure, or cholesterol level.