Our combination saunas come with infrared heaters and a traditional stone heater, while infrared saunas only come with infrared heaters. The traditional stone heater requires an electrician to install the 240V hookup, while the infrared heaters will plug straight into a 120V 15 Amp outlet. Traditional heaters will heat up the combination sauna to 185F+ while infrared saunas will only heat to 150F.