Electric fireplace inserts, popular alternatives to traditional fireplaces, simulate real wood fires with varying degrees of realism. The “closeness rating” measures this realism, with leading manufacturers and distributors achieving the highest ratings (10 and 9). Industry organizations (rating 8) establish safety and quality standards. Choosing the right insert requires considering factors like heating capacity, flame appearance, size, and safety features. Installation requires careful planning and adherence to guidelines, preferably with professional assistance. High-closeness-rated inserts offer the most immersive experience, enhancing homes with ambiance and warmth.