Maytag HVAC division is made by Nordyne, I have used Nordyne and found them to be a reliable quality unit. I dont believe that Maytag ever had its own HVAC division.
Now if you get into home appliances, Maytag was sold to Whirlpool, and that division has gone down the tubes, you are getting a Whirlpool with a Maytag label on it. Too bad Maytag made some great appliances, when ever a great company is sold, it all ways turns into how can we get the biggest profits, instead of how can we keep up the tradition of quality? Enough to make you wanna cry.