To Pay Down HELOC or Buy More

[Paul Camuto]

I own 15 individual units and most have a line of credit. I have been using the lines for the down payment on any new properties I purchase. The lines are variable at 5 to 6%. To service the debt on the lines to buy another unit it lowers my cash flow projections down to $100 a month or $1200 a year for any new unit. That doesn't include any maintenance expense. 

Is it worth it?

Should I continue to buy more units individually or pay down the lines "making" the 5 to 6% guaranteed?