While it may not always be easier and/or less expensive to do things right the first time, the long run usually supports the approach. This is especially true when considering the HVAC system for new home construction. You don’t need extensive personal expertise in the field, but you will need people who not only know what they are doing but also know what you want them to do. Communication is the key.
Choosing the right HVAC installation contractor is imperative, and there are numerous articles on this site to assist you in that choice. However, in new construction, you are more likely to be dealing with the builder, not the series of sub-contractors he has picked and who are actually the ones who will construct your new home. This is true from foundation and framing to finish work and landscaping, and definitely includes HVAC work.
Does this mean you have no input or influence other than choosing a builder? Of course not. Builders, even pretty good ones, are going to utilize what are called “builder grade” systems during all phases of construction unless you have contracted for something else before-hand. The contractor, like all good businessmen, will want to minimize his own costs in order to maximize his profits. There’s nothing wrong with that, but it also means that you may not get state-of-the-art systems as a matter of course. The builder could be using serviceable but dated technologies because they are more economical for him.
What may work best for you in terms of zoned heating and air-conditioning, for instance, could cost more initially, but pay for itself in terms of fuel use and versatility. Up-grading at a later date is costly and disruptive, to the point where you won’t gain anything by installing the up-grade. Work with your builder to get it right the first time.
