I have a couple of questions on how to proceed with our new house. We are going to build a 2,100 sf (main floor) ranch with a walkout basement, which will be heated and cooled with a heat pump, ground sourced if we can afford it. Half of the basement will be unfinished.
The house will have 9 foot ceilings on both levels. We are considering changing the basement to an 8 foot dropped ceiling, but leaving the wall height as is in order to increase the mechanical space above the ceiling.
Our architect does not include any HVAC detail in his plans, other than space for the mechanical equipment. He includes everything else. We have yet to select a GC, so we don't know who the possible HVAC subs might be.
The preliminary drawings we have on hand show the mechanical equipment in a storage room at one end of the finished basement. I would rather it be installed in the unfinished portion of the basement and against the rear wall. Is this a bad or good idea.
The floor plan is very open, and I am concerned that the HVAC contractor, whoever he is, might have problems locating places to put the return air ducts and registers that don't interfere with our living plans. I am assuming the supply registers will be in the floor, but I would prefer them to be elsewhere. What are my options in this regard? Is using the wall cavities for the returns a good idea? A lot of small returns might work better for us than a two or three large wall grills. Where should the supply and return registers be ideally located, high or low?
Basically, I am trying to gain knowledge to better discuss our HVAC options with our GC and his HVAC sub.
Thank you for taking the time to read this.