How can i remove this dust in my home?

I bought a house and I did some remodeling on it, put up new drywalls......etc. Now that I'm done doing all that, there is alot of dust in the air (from drywall, cutting boards.......etc.), in the vents (heater vents and air cooling vents)....I have a 3 year old and I don't want him breathing all that dust, what can I do to remove or reduce the dust?