A – The short answer is that living on Maui,
we have the most perfect climate in the world and we simply don’t need them. It’s not until you get to about 2800 ft. up the mountain, up Haleakala, at that point they will start putting some in along with fireplaces.
But, down at sea level where most of the population live, furnaces just don’t exist, there is no need. Our temperature is about 82 degrees every day in South Maui and goes down into the low 70’s at night.