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Sunny Health and Fitness SF-T4400 Folding Treadmill Review

A relatively basic but impressively affordable treadmill that gets the job done for lighter intensity workouts
Sunny Health and Fitness SF-T4400 Folding Treadmill
Best Buy Award
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Price:  $400 List | $355.36 at Amazon
Pros:  Affordable, 9 mph top speed, folds when not in use
Cons:  Smaller running surface, manual incline adjustment, 220 lb weight limit
Manufacturer:   Sunny Health and Fitness
By Jeremy Benson, Laura Casner  ⋅  May 3, 2022
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60
OVERALL
SCORE


RANKED
#7 of 8
  • Exercise Quality - 35% 5.0
  • User Interface/Ease of Use - 25% 5.0
  • Features - 15% 6.0
  • Ease of Assembly - 10% 8.0
  • Storability - 10% 8.0
  • Noise Level - 5% 9.0

Our Verdict

The Sunny Health and Fitness SF T4400 is an affordable treadmill that is best suited for walking, jogging, and light intensity exercise. It is quite basic compared to the more expensive competition, but we found it to provide quality exercise at a fraction of the price. It has a top speed of 9 mph and a tread surface of 49" x 15.5", and consequently, we found it best for shorter strides and more casual workouts. It has 3 positions of manual incline adjustment, a 220-pound weight limit, and the tread deck folds up to save space when not in use. It has a small digital display and intuitive controls including handrail buttons that make it quite easy to use. It's nothing fancy, but we feel it is a solid option for less frequent users or lighter workouts that won't break the bank.

Editor's Note: This review was updated on May 3rd, 2022, to add information on our test results and provide some more specific product comparisons.

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Pros Affordable, 9 mph top speed, folds when not in useFolds small for storage, easy to move around, good size running surface, 12 mph top speed, works with Echelon appLarge running surface, 12 mph top speed, 350 lbs weight limit, works with third-party training apps, good warranty10 mph top speed, up to 10% incline, fairly large tread surface, connected features, 300 lb weight limitSmall closed size, very storable, 2 in 1 functionality, Bluetooth speaker, affordable
Cons Smaller running surface, manual incline adjustment, 220 lb weight limitLess cushioned than other high-end models, doesn't feel as sturdy as some, ongoing cost of Echelon app (if you choose to use it)Moderately expensive, larger sizeUsing iFit app adds monthly cost, 10 mph top speed may not be enough for serious runnersDisplay location, remote control, have to remove handles to fold closed, louder noise level, short and narrow belt surface - not great for running
Bottom Line A relatively basic but impressively affordable treadmill that gets the job done for lighter intensity workoutsA compelling option for those with limited space though not without some minor compromisesConnected features, a large running surface, and a huge speed range make this median-priced model a compelling option for any fitness levelA reasonably priced model with a great exercise quality enhanced by connected featuresAn affordable and extremely compact 2 in 1 model that works best for walking or very light jogging
Rating Categories Sunny Health and Fi... Echelon Stride XTerra Fitness TRX3500 NordicTrack T6.5 S Goplus SuperFit 2 i...
Exercise Quality (35%)
5.0
7.0
8.0
7.0
4.0
User Interface/Ease of Use (25%)
5.0
7.0
6.0
6.0
3.0
Features (15%)
6.0
7.0
7.0
7.0
4.0
Ease of Assembly (10%)
8.0
9.0
6.0
6.0
9.0
Storability (10%)
8.0
9.0
7.0
7.0
10.0
Noise Level (5%)
9.0
9.0
8.0
8.0
8.0
Specs Sunny Health and Fi... Echelon Stride XTerra Fitness TRX3500 NordicTrack T6.5 S Goplus SuperFit 2 i...
Belt Dimensions 49" L x 15.5" W 55" L x 20" W 60" L x 20" W 55" L x 20" W 40" L x 16" W
Speed Range 0.5-9 mph 0.5- 12 mph 0-12 mph 0-10 mph 1-12 kmh
Motor 2.2 HP 1.75 CHP 3.0 HP 2.6 CHP 2.25 HP
Incline Adjustment Manual Electric Electric Electric No
Incline Levels 3 (0, 2%, 4.37%) 0 to 10% 0 to 12% 10 (0 to 10%) n/a
Weight Limit 220 lbs 300 lbs 350 lbs 300 lbs 265 lbs
Open Dimensions 62" L x 26.5" W x 50" H 69" L x 31" W x 49.5" H 77.2" L x 35.5" W x 56.1" H 73.5" L x 36" W x 54" H 49" L x 27" W x 42" H
Folded Dimensions 36" L x 25.5" W x 58" H 69" L x 31" W x 10" H 51.2" L x 35.5" W x 65.8" H 34 L x 36" W x 67" H 52" L x 27" W x 5" H
Display 7" backlit LCD display Digital display with integrated device holder 6.5" LCD blue/backlit, Bluetooth connects to devices 5" backlit, Blutooth work with your device small LED display
Workout Programs 9 programs 8 programmed workouts, works with Echelon app (subscription required) 30 pre-set programs, 2 custom, 1 heart rate control, plus it works with Zwift, Kinomap, Wahoo SYSTM through Bluetooth FTMS connection 20 programs, also works with iFit app No
Heart Rate Sensors Integrated handlebar sensors Integrated handlebar sensors Integrated handlebar sensors Integrated handlebar sensors No
Connectivity No Bluetooth, works with Echelon app Bluetooth FTMS and Auxilary input Bluetooth and Auxiliary input, works with iFit app Bluetooth
Additional Features Folding, soft-drop, transport wheels, bottle holders, shock absorption, quick speed buttons, manual incline adjust, device shelf, safety shutoff lanyard Transport wheels, folding design, 2 bottle holders, integrated device holder, safety stop lanyard, metal safety bracket underneath running deck to prevent objects from being pulled under Transport wheels, folding deck with soft-drop, heart rate sensors, auxilary plug, 2 bottle/cup holders, XTRASoft deck cushioning, quick jump speed and incline buttons, handlebar speed and incline controls, safety lanyard, built-in speakers, built-in cooling fan, accessory tray, Bluetooth, works with third-party apps Folding, soft-drop, device shelf, bottle holders, transport wheels, safety shutoff lanyard, speakers, auxilary input, Flex Select cushioning, heart rate sensors, Bluetooth, works with iFit Compact folding design, transport wheels, phone holder, remote control, Bluetooth speaker
Warranty Frame: 3 years, Parts: 180 days 12-month limited parts and labor Frame and motor: lifetime, Deck and parts: 2 years, Labor: 1 year Frame: 10 years, Parts: 2 years, Labor: 1 year not specified

Our Analysis and Test Results

Sunny Health and Fitness make a full line of modestly priced exercise equipment with everything from exercise bikes and rowers to ellipticals and treadmills. We tested the affordable SF T4400 Folding Treadmill against a selection of the best treadmills on the market. While it can't compete with the high-end models, it does provide a solid workout, particularly for the price. We don't feel it's the best choice for serious runners, instead, it is a solid option for occasional users interested in a basic model for walking and light running that won't break the bank.

Performance Comparison


The SF T4400 provides a good workout for the price.
The SF T4400 provides a good workout for the price.
Credit: Laura Casner

Exercise Quality


The SF T4400 wouldn't be our first choice for serious runners or hardcore training, but it can certainly provide good exercise. It has a decent speed range and a reasonably sized tread surface, making it a viable option for less intense walking, jogging, and running workouts. It has a few workout programs, but it does not have any connectivity that makes it compatible with training apps. Regardless, it is an affordable way to work up a sweat and burn some calories.


The SF T4400 has a speed range of 0.5 to 9 mph, so it will work for everything from walking up to fairly quick sub-7-minute miles. The 49-inch long tread is 11-inches shy of the longest models we tested but still provides adequate length for those with moderately long strides. The tread is relatively narrow at 15.5-inches wide, which is totally fine for walking and jogging, but care must be taken when running at higher speeds to not catch the side rails. The tread deck has some cushioning that does a decent job of absorbing some shock while you run. Incline can be adjusted manually into three positions, 0%, 2%, and 4.37%. We prefer electric incline adjustments, but manual is better than none at all and provides the option to do some incline training.

It won't satisfy hardcore runners, but this is a good, affordable...
It won't satisfy hardcore runners, but this is a good, affordable option for less frequent users for walking, jogging, and light running.
Credit: Laura Casner

The SF T4400 comes with 9 program workouts to choose from, but we found them to be geared more towards lower intensity or walking. We found this model to work best when controlled manually with a time, distance, or calorie goal. It also has heart rate sensors integrated into the handrails, so you can keep track of your pulse while you exercise.

Companion App/Connectivity


The SF T4400 is quite basic and it does not have any connectivity to make it compatible with training apps. You could, of course, use your own device and follow along to classes or programs on the app of your choice, but you won't be able to connect to the device in any way.

The console is relatively basic but the display is easy to read and...
The console is relatively basic but the display is easy to read and the buttons are intuitive.
Credit: Jeremy Benson

User Interface/Ease of Use


The SF T4400 is a fairly simple machine and using it is straightforward and intuitive. The display is relatively basic, but shows pertinent workout metrics and is easy to read. Buttons on the handrail and quick jump buttons on the console make it quick and easy to adjust your speed.


The tread deck has a soft-drop system that slowly lowers it to the ground from its folded position. Starting a workout on the SF T4400 is quite easy with an intuitive button layout on the console. There are start and stop buttons on the console as well as on the handrail. You also have the option to choose one of the 9 program workouts (the program profiles are shown on the console), programs are a feature not found on most treadmills in this price range. Quick jump speed buttons on the console allow you to make larger jumps in speed, while buttons on the handrail are easy to reach while you're jogging. The LCD screen is fairly large and bright, making it easy to read your elapsed time, distance, speed, estimated calories burned, and heart rate.

Manual incline adjustment, seen on the Sunny SF-T4400 and the...
Manual incline adjustment, seen on the Sunny SF-T4400 and the MaxKare, is less convenient than automatic, but it's still a nice feature to have.
Credit: Laura Casner

Features


While not nearly as feature-packed as the more expensive models we tested, the SF T4400 does come with some useful features to help enhance the exercise experience.


While far from fancy, the manual incline adjustment is better than none at all. The SF T4400 also has a soft-drop feature that slowly lowers the tread deck from its folded position. Two bottle holders on the console make it easy to keep fluids or your phone at arm's reach. An additional device shelf can be used to hold a tablet or smartphone in position for viewing, although it blocks the LCD screen when you use it.

The SF T4400 comes mostly assembled and finishing the process is...
The SF T4400 comes mostly assembled and finishing the process is quick and easy.
Credit: Jeremy Benson

Ease of Assembly


The SF T4400 was among the easiest to assemble of all the models we tested. Of course, it is quite heavy, so one of the biggest challenges is moving it in and removing it from the box. Once out of the package, finishing the remaining assembly is quick and straightforward.


The SF T4400 requires only a few easy steps to complete the assembly process. It comes with all the tools you need as well as printed instructions detailing all of the steps. All that is really required is folding the console arms up and bolting them in place, folding the console down and securing it, then lubricating the belt with the included belt lube. It took us around 30 minutes to get it ready for use.

You can't necessarily make it disappear, but the SF T4400 is fairly...
You can't necessarily make it disappear, but the SF T4400 is fairly compact when in its folded position.
Credit: Jeremy Benson

Storability


While it doesn't take top honors in this metric, the SF T4400 is a relatively compact treadmill. The tread deck can be folded up when not in use to significantly reduce its footprint, and integrated wheels make it fairly easy to move around on firm surfaces.


In its open position, the SF T4400 measures 62-inches long by 26.5inches wide with a height of 50-inches at the top of the console. With the tread deck folded up, its length is reduced by nearly half to 36-inches, but it gains a few inches in height. While it definitely doesn't disappear, it takes up a fair amount less space than many of the other models we tested.

Noise Level


The SF T4400 scored well for its relatively low noise level. While it isn't silent by any means, the 2.2 HP motor is quieter than most. Like most treadmills, the majority of the noise comes from the user's footfalls while walking or running.


Should You Buy the Sunny Health and Fitness SF T4400 Folding Treadmill?


The Sunny Health and Fitness SF T4400 is a compelling treadmill option, mostly due to its low price point. While it is not the best choice for serious runners or intense training, it definitely gets the job done for walking, jogging, and light running without breaking the bank.

What Other Treadmills Should You Consider?


If you're looking to do some more intense workouts, the NordicTrack T6.5 S costs a few hundred bucks more but offers a significantly better exercise experience and connected features. It has a much larger running surface, higher top speed, electric incline up to 10%, and it works with the iFit app. If you're super tight on space, the Goplus SuperFit 2 in 1 is more of a walking model with folding handrails that can easily fit under a bed or in the closet when not in use.

Although it's relatively basic, the SF-T4400 provides a solid...
Although it's relatively basic, the SF-T4400 provides a solid workout for the price.
Credit: Laura Casner

Jeremy Benson, Laura Casner

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