| > Windows don't make for very good ventilation The point was not with ventilation quality, but with the feasibility and compromises of alternatives. (The strict point was with defining "mandating good ventilation".) Mechanical ventilation with energy recovery may be far superior, but if that means constant noise it will be an issue - to some, a radical issue. > They definitely can warm an entire house And I have stated that they can be perfectly inadequate and ineffective (explicitly: which is not contradicted by your statement). Evidently, it will depend on implementation, and again on the expected effect (where temperature is only a partial factor). Speaking of implementation, I have been in hotels where the heating pumps were unbearable in that they made the room tremble and clearly vibrate. So, when one speaks of mandating technologies, there are critical implementational issues to be remembered, and the "embrace" drive is to be immediately criticized (just applying one's usual duly Reflection). It is relevant that I have seen in the past legislation mandating some technologies only halfway trough (e.g. mandating valves without mandating pressure control systems), creating immense damages on large territories. Edit: also: > Heat pumps don't always need big fans ... Not much louder than a gas furnace You have not stated they are perfectly silent, 0db - in fact, you seem to suggest the opposite. As said, some do not tolerate background noise. I do not see where you read anything wrong. |