The LiftMaster 8365-267 Premium Series 1/2 HP AC Chain Drive Garage Door Opener has received a mix of reviews, with both positive and negative feedback from users.

Positive Aspects:

Users have highlighted the reliability and durability of the LiftMaster 8365-267, with some customers expressing satisfaction with the product's performance over time.
The inclusion of safety and security functions has been noted as a positive aspect, with the product offering a wide variety of safety features and a lifetime warranty for its motor
.
Some users have praised the ease of installation, with one customer mentioning that it took them only around 30 minutes to complete the installation.

Negative Aspects:

There have been reports of difficulties in installation and programming, with some users expressing challenges in setting up the opener.
Noise levels have been a concern for some users, as the chain drive mechanism of the LiftMaster 8365-267 is noted to be relatively noisy.

In summary, the LiftMaster 8365-267 Premium Series 1/2 HP AC Chain Drive Garage Door Opener has received mixed reviews, with positive feedback regarding its reliability and safety features, but also some concerns related to installation difficulties and noise levels.