Upfront cost
A standard tank water heater costs less to buy and install. Tankless units cost more upfront, especially if gas lines or venting need upgrading.
Operating cost and lifespan
Tankless heaters use 24–34% less energy for typical households and last 20+ years with annual descaling. Tanks last 8–12 years.
Hot water capacity
Tankless provides endless hot water at a fixed flow rate; a tank provides a fixed amount at any flow rate. Large families running several showers at once need a correctly sized tankless unit or two.
Our recommendation
Choose tankless if you plan to stay 7+ years, value endless hot water and have the gas capacity. Choose a high-efficiency tank if upfront budget is the priority or your usage is modest.
Need a plumber for this?
MGA Plumbing provides water heater installation 24/7 in every Missouri city — Kansas City, St. Louis, Springfield, Columbia and hundreds more. Upfront pricing, same-day service. Call (888) 480-9811.