Yes, it is safe to use the heating feature. Most massage chairs incorporate this feature to elevate the performance of the piece. Read more on heating mechanisms in massage chairs to help you understand how they work. Important to note, however, is that you must use the massage chair as per the instructions from the manufacturer. Do not try to explore the heating feature as the results could be catastrophic. Engage the customer support team of the brand you want to buy and learn more about the technology they use for this function. Also, read reviews and testimonials from previous clientele to help you make an informed choice. To prevent any accidents involving this feature, ensure that the unit’s assembly is impeccable. Also, observe all the safety guidelines to the letter.