Best HVAC system for a small inlaw addition?
We are in the process of working out a design with a client for a small ~ 600 sq ft inlaw addition. We plan on R-24 walls and R-40 roof insulation. For various reasons we want to use a separate HVAC system, but it’s such a small space. We’ve been looking at mini-splits with two interior units fed off of one exterior (bedroom and living/dining/kitchen) but it seems the smallest such unit is rated for 1200 sq ft. My mechanical installer tells me that the units are variable speed and will compensate for the smaller space. Is he right? Is it overkill? It’s a tight budget but we are interested in maximizing efficiencies wherever we can. Has anyone come up with a decent solution for similarly small spaces?
BTW we are in the Mid-Atlantic and so need both good heating and good cooling capacity
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