Can I, a homeowner with only basic knowledge of HVAC systems and design, use HVAC-Calc to do load calculations and determine overall unit size and duct requirements for my home?
I recently purchased a two year old home and the HVAC system is either undersized or the duct design is inadaquate. I had the system examined by several contractors (none of which did any load calculations) and each has thier own fix. One says replace the 3-1/2 ton unit with a 5 ton, another says the spider duct design needs to be replaced with a trunkline and ths list goes on.
My thoughts are to use the HVAC-Calc and comapre the results to the existing system to determine what changes need to be made.