It looks good and I would never have thought of hooking up all 4 together.
Just a little comment ..... I hate when someone uses that orange spray foam insullation, it looks like crap if left that color. As far as the gas piping, they could have cleaned it up a little .... maybe a clamp or two to make it look a little beter then it does.
Im not real big on 20' whips on the condensors lol . Cnduit would look better but I can see it being with the crossing of the piping it would be a little more hassel.
In all it looks great to me. Anyone can judge but then we dont know what the bid was and if you did everthing the most expensive way or the hardest way........... you might not be getting that many bids the way some people lowball now days.
That looks like one large wood return there ?????? Bet that has a lot of bracing for that weight lol
So special ......I see in your web site that you dont even show what brand you sell. You that proud of what you sell or just put in Goodman when thats what they want, and to everyone else ...... you bid whatever brand they want ??????
Hmm, 4 variable speed blowers pulling return air from the same place at the same time...sounds like bad mojo to me.
I have seen an installation with 2 variable speed units pulling from a common return. In 3 years they went through about 8 motor modules between the 2 units because the variable speed blowers were fighting eachother, causing the motors to hunt. Constant ramping up and down will kill ECM motor modules.
The reason the supplier told you that the furnaces could not be twinned probably had a lot more to do with the ECM blowers than with the heat pumps.
If more government is the answer, then it's a really stupid question.