This is a frequently asked question, and honestly, there are several reasons to consider a tankless water heater, though not all apply to every situation. Longevity is a significant factor; a tankless unit can last as long as you can obtain parts for repairs, often exceeding 25 years, as indicated by some 25-year warranties on heat exchangers. Additionally, tankless systems eliminate heat loss associated with traditional tank heaters, which can waste energy, especially in smaller households that use hot water infrequently. For larger families, the benefits of a tankless unit become apparent when you want the flexibility of hot water on-demand scheduling usage. This is particularly true for homes with two hot water tanks or outdated power-vented tanks, which are costly to operate and have shorter lifespans. A tankless water heater is an excellent investment if you enjoy long, hot showers and plan to stay in your home for the long term. However, if your stay is temporary, a standard tank may be more cost-effective in the short run.