Updated for 2026: we checked this guide against current codes and equipment options.
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Additional Sizing Resources
Correct sizing is essential for both comfort and efficiency. For the most common residential decision, see our detailed 50 vs. 75 gallon water heater comparison. If you’re considering going tankless, size works differently — see tankless water heaters in Florida for GPM-based sizing guidance. For heat pump models, read our hybrid and heat pump water heaters article. Once you’ve decided on size, get a free water heater quote for an accurate installation price for that specific model and size.
Need a water heater installed fast? Discount Water Heaters serves the Treasure Coast — Fort Pierce, Port St. Lucie, Stuart, and surrounding areas. Get your free quote today →
Related resources: Learn more about water heater maintenance, same-day water heater installation, hard water effects on water heaters.