Pay capital gains tax after using my house as a rental?

[Joe Szymczak II]

Hello BP community!  I have owned my house for over 8 years now and it has appreciated a good amount.  I know that if I were to sell it outright I WOULD NOT have to pay capital gains taxes on it.  However.... I would like to rent it out and move into another property.  I have heard that once you rent out a property if you were to sell it later you MUST pay capital gains taxes on it.  Is this true?!? Please say it ain't so!  Thanks in advance for all the help! 

Joe