We are renovating our bathrooms. We currently have separate lights and exhaust fans, but want to put in Tastics (or equivalent). However, we are getting conflicting advice; some say that the Tastic isn't powerful enough to exhaust a room when a shower is in use (OK with a bath) and that we should also have a dedicated exhaust fan, while others suggest the Tastic IS good enough. Seems a bit of a waste to me to have both, but wondered if the brains trust had some advice/experience. The rooms are generally well-ventilated, although the new guest ensuite we are building will have no windows, and will be fairly small, being a shower/toilet in one room, and the vanity in a separate alcove. Thoughts?