Can my Roku tv be converted to use an RF remote option?

I got a new Tosot heat pump. The split unit above my tv uses an Infrared remote. My Roku tv uses an infrared remote. They are affecting each other. The tv remote turns the heat of/off when I turn the tv on/off and the temp settings are going up and down with channels. Can i get an RF remote for my LC-55LBU711C tv and block the Infrared sensor on the tv?