By fixing a portion of their loan they saved over $ 220 per month. (moneysmart.gov.au)
There is a permanent and fixed portion with those solar panels and a detachable excursion module that is connected by a tunnel. (treehugger.com)
Note: Estimated payments for fixed portion based on 5 year fixed mortgage rate at 3.69 %, compounded semi-annually and estimated payments for variable portion based on 5 year variable rate mortgage at 2.20 %, compounded semi-annually, based on 35 year amortization. (loanbox.ca)