asuna treadmill review

5 Best Sunny Health & Fitness Asuna Treadmill Review

Sunny Health and Fitness has designed some of the best treadmills for home use. The Asuna treadmills by Sunny are compact and sturdy, have an incline feature, and can be folded. In this review, we look at 5 Asuna models that are pocket-friendly and great additions to your home gym.

Our Top Sunny Health & Fitness Asuna Treadmill: A Quick Look

Explore our review where we highlight our top Sunny Health & Fitness Asuna Treadmill ideal for your home-based exercise regimen. For those seeking a quick glance at our top picks, this is for you:

1. Sunny Health Fitness Asuna Treadmill 8730

2. Sunny Heath and Fitness Asuna 8730G Treadmill

3. Asuna SpaceFlex Treadmill with Auto Incline

In a rush? If you weigh 220 pounds or less, we recommend the 8730. It folds flat, has a large deck, and is cushioned for low impact. If you want to get a more intense training, you should get the Sunny Health Fitness SpaceFlex motorized treadmill. It has a user-friendly console for tracking your fitness data and heart rate sensors. It inclines up to 12 levels and folds for upright storage. 


Sunny Health Fitness Asuna Treadmills Reviews

1. Sunny Health Fitness Asuna Treadmill 8730

Sunny Health & Fitness ASUNA Treadmill

View on Amazon

Boasting of a slim and sleek design, the 8730 is a modern treadmill with a capacity of 220 pounds. Why is this home treadmill popular? Find out below.


The 8730 weighs about 95 pounds and measures 59″ x 30″ x 40″. What this means is that you do not need a lot of area for exercising and storage. It even folds flat for easy storage under your couch or bed.

It has a 49″ x 17.5″ running belt powered by a 2.5 HP motor and a running deck integrated with shock absorption technology to minimize impact on knees and joints. While it is not designed for intense exercising, it is ideal for walking, jogging, and running exercises. If you want to do more intense workouts, we recommend you go for a larger treadmill with a wider belt.

The console includes a digital LED screen for tracking speed, distance, time, and calories, a safety clip for emergency stops, built-in speakers, and an audio jack. There’s also a device holder where you can place your mobile device that you can pair with the machine and use to listen to music as you work out.

When done exercising, simply fold and lift it, and use the transportation wheels to move it to storage. When folded, this Sunny Health Fitness treadmill measures 30.5″ x 64″ x 5.25″.


  • Foldable and space-saving
  • Offers speeds up to 8 MPH
  • Supports up to 220 lbs


  • Does not have an incline function

Tight on Space?  Check Out Our List of Compact Home Rowers – CLICK HERE!

2. Sunny Heath and Fitness Asuna 8730G Treadmill


View on Amazon

What is the difference between Asuna 8730G and 8730? The main difference is color. The 8730 comes in silver while the 8730G is available in gold. If you’d like to choose between the two, opt for the treadmill that matches your living room color. Here are a few other things you’ll love about the 8730G.

Assembling an equipment takes time and can even be frustrating. Sunny understands this and, in fact, ships this trainer fully assembled. How’s that for thought? Just take the product out of the box, unfold it, start your treadmill, and you’re good to go.


Just like the previous model, this treadmill features a small frame that is well built and has a weight capacity of 220 pounds. It is coated with scratch-resistant and rust-resistant paint, making this a low-maintenance treadmill.

Also, the 8730G is powered by a powerful 2.5 horsepower motor that sustains long sessions without overheating or choking. You get a 49″ x 17.5″ well-cushioned deck for gentle, low impact workouts with a top speed of 8 mph.

A human can sprint at about 6.5 mph, which means that this machine is ideal for most people. Most features are similar to the previous model. You get a 4-window display LED screen to view your workout data, an audio jack, built-in speakers, and a tablet holder.


  • This compact treadmill folds to save space and has wheels for easy portability
  • Has high speeds – 8 mph
  • Floor stabilizers allow for use on different types of floors
  • Quick buttons for speed control


  • Not built for heavy users

3. Asuna SpaceFlex Treadmill with Auto Incline

Sunny Health & Fitness ASUNA SpaceFlex Electric Running Treadmill with Auto Incline

View on Amazon

If you’re looking for a powerful treadmill, you can’t go wrong with this auto-incline treadmill, the Asuna SpaceFlex motorized treadmill 7750.

Here are a few highlights of the Asuna SpaceFlex with auto incline.


Boasting of a larger, well-built frame, this machine can handle different types of trainings, including high intensity interval training (HIIT). The Sunny Health Fitness Asuna SpaceFlex weighs 127 pounds and measures 57″ x 28″ x 48″. It is slightly larger and heavier than the other Asuna models we’ve reviewed above.


This means you’ll have to set aside more space, but it also folds flat to 57″ x 28″ x 19″, so storing it won’t be much different. Because of its size, you’ll enjoy a larger running deck of 51″ x 19″, which is cushioned to lower the impact of the exercise. Textured rails add to user safety.

The Asuna 7750 console features built-in speakers, a USB port for your devices, and a tablet holder. It has 6 LED windows for tracking time, program, distance, mode, and heart rate. Pulse sensors on the handlebars provide info for heart rate monitoring, which is a basic requirement if you’re serious about working out optimally.

Of course, we’ve left the best feature for last – the incline function. This running treadmill offers 12 auto-incline settings to simulate running uphill and let you engage more muscles and burn more calories. When done exercising, just fold up the SpaceFlex 7750 and use the transportation wheels to move it.


  • Has speeds up to 8 mph
  • Offers 8 user workouts and 3 customizable programs
  • Auto incline of up to 12 levels
  • 3-year warranty on frame, 90 days on parts


  • Pulse monitor not telemetry-enabled

4. Sunny Health Fitness Asuna SpaceFlex Running Treadmill 7750P

SUNNY HEALTH & FITNESS Asuna Treadmill with LCD and Pulse Grips

View on Amazon

If you love a pop of color in your home gym, the Asuna SpaceFlex 7750P pink treadmill is the best pick for you. This machine has a max weight of 220 pounds.


The 7750P is similar to the 7750 running treadmill. Its 51″ x 19″ deck is shock-absorbing to protect your joints from impact.


Like its siblings, this space flex motorized treadmill is foldable and has transport wheels. The console gives you access to your workout data (heart rate, distance mode, pedometer speed, and more). Like the 7750, this running machine also has built-in pulse monitoring sensors and 12-level auto incline.


  • Stylish  color
  • Has quick buttons for adjusting speed and inclines on the fly
  • Has floor stabilizers so it can be used on different types of floors and to prevent wobbling
  • Slim-fold design for easy storage
  • 8 workouts plus 3 customizable
  • Has AUX and USB ports 
  • 5-year warranty on frame, 180 days on parts


  • Heavier than other Asuna models

Related Post:  Do I Need a Mat Under My Treadmill? Click Here to Read More!

5. Sunny Health Fitness 7700 Portable Treadmill

Sunny Health Fitness Portable Treadmill

View on Amazon

If you’re on the heavier side, the Sunny Health Fitness 7700 should be on top of your list. Learn more about its features here.


The 7700 is made of alloy steel and coated with black chip-resistant paint. Its dimensions are 56 x 30.5 by 56.5 inches and has a weight of 167 pounds, making it not only the heaviest in this list but also the most stable. No wonder it supports 440 pounds of user weight!

The auto-incline deck measures 51″ x 17.5″, cushioned for your back and knees. The feature that sets it apart from other options on this reviews list is that it is not motorized – meaning you power your workouts. The resistance settings are no joke – there are 8 settings, but there’s a fair amount of resistance even at the lowest level.

This machine is solidly built and as tough as nails! So if you want serious treadmill training, don’t look elsewhere – this is the real McCoy!


As you can expect, the incline is manually adjusted. It offers 14 levels of incline, which you manually select from a knob on the right. The 7700 has a simple, user-friendly console where you can check your workout information and a tablet holder. The handles are ergonomically designed so you can hold onto them while exercising.


  • SoftDrop system for unfolding
  • Handles are slip resistant
  • Has a large tough running surface
  • Solidly built and handles up to 440 pounds
  • Versatile – can be used for mountain climbing, hand-walking, backward jogging, and a variety of workouts
  • 5-year warranty on frame, 90 days on parts


  • No heart rate monitor
  • Manually adjustable incline

How to Choose a Treadmill

This review would be incomplete if we didn’t give you some tips to help you choose the best treadmill from this reviews list.

Features to Look for in a Treadmill

What features do you look at when choosing a treadmill?

man using treadmill in a gym


How much room can you set aside? The first thing you ought to consider in your search for a running training is the frame quality. You want to go for one made of durable steel for durability and coated with scratch-resistant paint.

Also, its important to keep in mind the available room in your living room. If you have limited area, opt for the 8730 or 8730G that folds completely flat for storage. The Sunny Health Fitness Asuna SpaceFlex 7750p can be stored upright on a corner, so it’s also a great option.


How much do you weigh? It’s a no-brainer, but it needs to be stated – only buy a product that can support your weight. For lightweight runners, we recommend the top two treadmills and the SpaceFlex running treadmill with auto incline. For heavier users, the 7700 can handle up to 440 lbs.

Manual vs Auto incline

Which incline mode is the best? This depends on your preference. Running uphill on a treadmill is great at engaging different muscles groups, and if you want to burn more calories per hour, the incline feature is a must. Auto incline allow you to change the level with buttons on the console area, while with manual incline, you have use a knob to increase or decrease the level.

Motorized vs Muscle-powered treadmill

A motorized treadmill is powered by a motor that turns the belt. On the other hand, a muscle-powered treadmill like the Asuna 7700 depends on your leg power to get the belt moving. So, choose you’re own poison, or so they say. In other words, it depends on the person that you are.

If you’re motivated by the raw possibilities of a manual treadmill, and you’re physically fit and naturally athletic, then the muscle-powered treadmill would be the perfect beast for you. If you’re just beginning your fitness journey or recovering from an illness, then the motorized treadmill should be a safer option for you. 


Another important factor to consider is the console area. It should have an LED screen that displays workout data, aux cable port, speakers and more. The handles should be anti-slip and ergonomically designed so you can hold onto them as you exercise. Also consider if you want heart rate monitoring to help you exercise at your optimum level.


Apart from the 7750 and 7750P running treadmill with auto incline, the other options on this list do not have preset programs. Guided workouts take the guessing out of your fitness experience. A program will control the incline and speed, allowing you to exercise hands-free and burn the exact number of calories you want for the session.


What is your budget? Treadmills come at different price points. Thankfully, Asuna treadmills are reasonably priced.

Final Thoughts

Want to exercise at home? These Asuna treadmills are some of the best treadmills for home workouts. These machines can be folded and come with transport wheels for portability. They support users of different weights, offer incline for intense exercising, and are budget-friendly. You can’t go wrong with any of the options on this review list.