Choosing the right water heater is one of the most important plumbing decisions you’ll make for your home. Too small and you’ll run out of hot water quickly; too large and you’ll waste energy (and money). That’s why we created this free, interactive tool to help homeowners in the Dallas–Fort Worth area determine the best size water heater for their needs. Use the calculator below to get an instant recommendation.
Water Heater Size Calculator
Recommendation
Enter your details above and we’ll suggest a size that fits your household.
Water Heater Size Calculator FAQs
What size water heater do I need for a family of 4?
Most families of four need a 40–50 gallon tank or a tankless water heater rated for at least 6 GPM during peak demand. Use the calculator above to confirm your exact needs.
Is a bigger water heater always better?
No. Oversizing wastes energy and money. The goal is to match the water heater’s capacity to your peak usage.
What’s the difference between tank and tankless?
Tank water heaters store hot water; tankless systems heat it on demand. Tankless units save energy but must be sized correctly for simultaneous fixtures.
How long do water heaters last?
Tank models typically last 8–12 years; tankless can last 15–20 years with maintenance. If yours is older, it may be time to replace.
