Jeff,
Here are some ideas.
1. Canvas neighborhoods and put out door hangers or flyers. Have a call to action in your ad to make the customer want or need to call you.

2. find some direct mailing. There are some of these that can be reasonable.

3. Place an ad in church bulletins. Again, pretty cheap and somewhat effective.

4. If you want to get into the commercial or industrial service then I suggest you go door to door, handing out cards and flyers.

These are things that I did when I first started out and it helped alot.

The other thing is don't let forget your existing customers. Always keep your name in front of them, even offer an incentive for referrals.

Hope it helps

Have a Blessed Day,
Rick Bruder