We just did this. We had refinanced in 2005, had a great rate of 5.68% for a 30-year mortage. We had taken out an equity line of credit with it. So the equity line was at $11,500, the mortgage was $97,000 (give or take) and another 2 credit cards equalling $8,600 total. So we added that all together and took out a loan for $127,500 (keep in mind we only paid $114,900 for the house orginally). We took out a 15 yr loan at 4.65%, and we are paying the same monthly that we did with all of those bills together. We paid off all our debt with it, and we will have the house paid off in 15 yrs max. but we pay bi-weekly so that would be about 12.5yrs or so. And if need be, we have a ton of equity in the house should we need cash out ($230,000 is what it was appraised at).
We did it through lendingtree, orginally we went in thinking we would save money on just doing another 30yr for what we owed on the house, but we had a great guy who gave us tons of scenarios and helped with our decision.