Heat Pumps and Electric Heating - in search of the right 2 units

I am currently doing an addition that will double the size of my home,I want to replace the duct in the old house and upgrade this unit as well,what advice on what manufactures to trust and to stear clear of ,my contractor is wanting to use tempstar,we have a train now and this is what we wanted to stay with ......please any input is great!

The best unit out their is the unit that is installed correctly. A unit is a unit for the most part. That being said most lower end equipment have lower end installs. NOT ALL but most I have seen. If you like trane then id find a contractor that can install it correctly.

Id also say keep them the same make. ;)

And don't look at the big ads in the phone book as a guide. I had my hvac replaced 6 years ago, got 3 bids. Similar, but I went with the lowest, which has the biggest ads in our phone book. And it was a Lennox.

First of all, they had to come back twice to fix leaks. Then about 15 months later I had a problem, and they said the condenser coil in the furnace unit had a leak, but it was only a one year warranty. Realize that this is not a mechanical or moving part. And it was gonna cost about $800 bucks as I recall.

Well, I remembered working on a commercial job with a an HVAC contractor, that this developer used all the time. He used me all the time too, so I knew he liked quality. :)

Anyway, I call him, and turns out he was also a Lennox dealer. Yes, it was a lower end Lennox with a 1 year warranty, but because of the type of problem (none mechanical), he got the factory rep to cover the part and it just cost me $150 in labor.