Looking for an answer to the question: Are 240v heaters more efficient? On this page, we have gathered for you the most accurate and comprehensive information that will fully answer the question: Are 240v heaters more efficient? That's why the larger appliances like the stoves, central heat/air, and water heaters always operate on 240. Yes, 220/240 is more … [Read more...] about Are 240v heaters more efficient?