There are also «hybrid» mortgages that have initial low interest periods of 3; 5; 7; or 10 years before the rated adjust. (fhaloanpros.com)
You will only get the full benefit of a balance transfer deal if you pay off the amount you've transferred within the nominated low interest period. (moneysmart.gov.au)
Be cautious of low introductory interest rates that can increase greatly after their initial low interest period (u-fi.com)