The air purifier they recommended makes a loud annoying noise any time the house temp falls below a certain point. The router they recommended started randomly

The air purifier they recommended makes a loud annoying noise any time the house temp falls below a certain point. The router they recommended started randomly and frequently dropping connections after a year. The WiFi extender they recommended dropped connections from day one and also had noticeable coil whine from across the room. The surge protector they recommended reeked of mid/late 2000s-era cheap plastic and made my living room smell of it for about two weeks. And the expensive house fan they recommended made an off-balance rumbling vibration type noise which made it difficult to fall asleep to. Upon further research into each issue, I found many other people noticing the same things. In addition, many of the products with these issues I exchanged, only to have the replacement exhibit the same exact problem. Their presentation is their only real strength for the most part.