You definitely need to be careful not to go too far. When it comes to increasing what we would call your cooling loads—we're going to get into building science, now—overall, in terms of energy efficiency with these high-performance homes, you tend to lower your heating load, which is the main energy consumer over the course of the year. Yes, in some cases that results in needing cooling when you wouldn't have required it otherwise. Overall, your energy savings are better, but you are creating a cooling load that you might not have needed before. However, with extreme climate events coming, you may be glad you have air conditioning systems anyway. It's a tricky balance.
That said, the bigger question is, how fast do you go to these next levels? If you're in B.C., you already have your step code. We already know that the highest level of that code goes well past net zero and is maybe too far, and the cost effectiveness is not there yet. We are building net-zero homes for those who can afford them and want to invest that way, but it is not a cost-effective solution yet, which is why we keep harping on the need for more innovation and more R and D. We need to bring down the cost of building that level so that it makes complete cost-effective sense and becomes affordable for everybody to be able to invest that way.