The standard included ducted heating system (can't remember which model) is insufficient for a 48 square house. We've upgraded to the Brivis MX35i for ~$14k. There's also the option to upgrade to the HX35i which is the high efficiency model for an extra $852. As we've max'd out our budget for the house, we've downgraded to just the MX35i but will probably ask them to put it back up to the HX model as it should pay itself off over the long run. (I tried to get some stats on how long it would take to pay off but couldn't find any useful comparisons. One forum poster said 30% more efficient and pays off in 1.5 years.. I'll be more conservative and say 3 years which is still pretty good return. Good for the budget and good for the environment) This is the add-on airconditioner. We've only ever had evaporative air conditioning in the past and there's no way I'm putting evaporative into a new house. It's fine when it is <30 ...
Marriot 48 with Chatworth Facade