If you just moved to town, you may not know the area well. Do some research to see if there were any recent tragedies or accidents. Some people believe areas that have dark histories are more prone to hauntings.  You can look up the history of your town online. Try stopping by a local library that archives old newspapers. You may find some unusual stories there. Some websites allow you to enter your address and, for a fee, they will provide you with information about deaths that occurred in your home. You can also try simply searching for your address online. There may have been a news story if someone died in your home, or if a tragic event occurred there. You can hire professionals to do an energy audit of your home. This involves using a thermodynamic camera to check your home for dips in heat. A home with inexplicable dips in heat and uneven temperatures may be haunted.  Energy audits can sometimes find logical causes of dips in energy. This can allow you to fix problems in your home that cause things like drafts, slamming windows, and flickering lights. Stick to people like professional mechanics, who offer non-paranormal services. Paranormal investigators are not legitimate and will not provide a real service. There's a good chance there's a rational reason for drafts and cold spots that may require repairs that paranormal investigators cannot provide. If you just moved to a neighborhood, your house may have a reputation for being haunted. Ask your neighbors if they know of any paranormal activities in your home. Ask them if previous neighbors ever said anything about your home being haunted.

Summary:
Research the area. See if anyone died in your home. Do an energy audit. Talk to your neighbors.