LiftMaster 3900 vs 8500

The two most popular and reliable LiftMaster Jackshaft garage door openers are the 3900 and 8500. They may look alike with the same construction and design, but they have a few differences that set them apart. To help you decide which LiftMaster product is best for your needs, stay with us as we take a close look at the LiftMaster 3900 vs 8500.

LiftMaster 3900 – Click here to check the price

LiftMaster 8500 – Click here to check the price

Comparison of the LiftMaster 3900 and 8500 garage door openers

Area of ​​use

The 3900 is designed for use in light commercial buildings. It is an ‘industrial’ garage door opener. The 8500, on the other hand, is designed for residential use and should only be installed in homes.

Mounting position

LiftMaster 3900 vs 8500

LiftMaster 3900

As Jackshaft door openers in the LiftMaster Elite Series, these products can be mounted next to the door rather than on the ceiling. This frees up ceiling space and makes them preferable to ceiling mounted openers for customers with low ceilings or high vehicles.

Door specifications

These LiftMaster openers are designed to be used for sectional garage doors. These doors should open with a one inch torsion bar and should be 14 feet high and 18 feet wide. They must also have a maximum weight of 650 lbs.

Sectional doors operate on rails. To be used with one of these LiftMaster openers, the tracks must be 12 inches in radius.

Height and weight

The 3800 has a more compact design, which makes it smaller than the 8500. Regardless of its small size, the 3900 is much heavier than the 8500.

Start and stop function

Both openers have a soft start and stop. It just means that once activated, the opener ensures that the door begins to move at low speed. Likewise, when the door is about to close, the speed also decreases. This slow start and stop function ensures that your garage door never comes in contact with the ground at high speed and thus prevents unnecessary damage to the door. It also ensures that the door opens and closes with as little noise as possible.

Control panel and push buttons

The LiftMaster 3900 can be operated with a single control button, otherwise known as a push button. You just press the button to open, stop or close the door.

The 8500 comes with a more innovative control in the form of a smart LCD display. This panel comes with a night light / backlight for easy nighttime use. With the control panel, users can program the supplied remote, turn on garage and opener lights, and even prevent the remote from operating the opener. The 8500 also features MyQ technology which allows users to control the opener directly from their smartphone. This is done using the completely free MyQ mobile app. Additionally, with MyQ technology, the opener can send email or text alerts informing the owner of the status of the garage door and light.

888LM Internet Gateway

Using MyQ technology requires Internet access, and this is where the 888LM Internet Gateway comes in. This wall panel is sold separately and must be purchased, installed and configured for users to enjoy all the benefits. of MyQ technology.

Remote control

The 8500 comes with a handy remote control. This allows users to easily open and close their garage doors from the comfort of their car. Once the remote detects a hand approaching it in the dark, it immediately emits a soft blue light to help guide the user. The remote control is also designed in such a way that it can be easily clipped onto your car’s sun visor.

However, several users complained that the remote sometimes lost its connection with the opener, and a few users were not satisfied with the proximity of the remote to the door before they could successfully open the door.

Obtaining a remote when purchasing the 3900 depends on the store it was purchased from and the type of packaging purchased. Some 3900 opener kits do not have a remote control included in the package, while others do. What is even more important to note is that unlike the 8500 whose remote control is specially designed for the opener, the remote control included in the 3900 package is actually the remote control designed for another LiftMaster model: 371LM . So users who have a 371LM remote can configure it to operate their 3900 opener.

Click here for more details on the LiftMaster 3900

Click here for more details on the LiftMaster 8500


Both LiftMaster door openers are equipped with safety sensors. These sensors accurately monitor the opening of the door by projecting invisible infrared beams through the opening. Once the door closes and an object or body moves in the path, the beam is interrupted and the sensor immediately stops and reverses the movement of the door.

The LiftMaster 8500 also gives an audible and visual warning when the door is about to close. Once motion is detected in the garage, a motion sensor turns on the garage light and the opener light. If the door is open and still not closed after a predetermined time, the opener is designed to close the door and turn off the light automatically.


LiftMaster 8500

The 8500 has a power locking deadbolt that prevents forced opening of the garage door. The rolling security code feature also helps ensure that only authorized persons can open the door. Each time the remote is used, the control panel sends a new security code to the remote to use to access the opener next time.

For both openers, the manufacturer strongly warns users not to use the opener for more than 10 full door cycles in an hour.

DC motor, power supply and backup

The motors in these LiftMaster door openers consume a significant amount of power (24 VDC), but unlike most energy-intensive motors, they are extremely quiet. The openers require electricity to operate and are equipped with a 6 foot power cord. However, in the event of a power failure, LiftMaster offers an optional battery backup which is sold separately.


Both devices offer a lifetime warranty on their engines and a 5-year warranty on all other parts.

Advantages and Disadvantages of the LiftMaster 3900


  • Has safety sensors to prevent the door from closing once a body is in the door opening
  • Powerful but quiet motor

The inconvenients

  • No internet connectivity and smartphone control
  • No electric lock and rolling security code functions

Advantages and Disadvantages of the LiftMaster 8500


  • Has safety sensors to prevent the door from closing once a body is in the door opening
  • Electric lock and rolling security code features help keep your garage safe
  • MyQ technology allows control via users’ smartphones
  • Powerful but quiet motor

The inconvenients

  • Loss of connection between remote control and opener
  • The remote control must be close enough to the door for successful operation


In the end, it’s safe to conclude that the final choice between the LiftMaster 3900 and 8500 primarily depends on where the opener will be used. They both have their specific areas of use. The 3900 is a very basic unit with limited functionality and is recommended for commercial buildings. On the other hand, the 8500 has more features suitable for a residential application.

Click here to see reviews, ratings and more for the LiftMaster 3900

Click here to see reviews, ratings and more for the LiftMaster 8500

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