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Find the right water heater capacity for your household
Water rates in Georgia average $5.00 per 1,000 gallons.
Climate Zone
3
Electricity
$0.13/kWh
Labor Costs
90% avg
Tell us about your household to determine the right water heater size
Georgia is in Climate Zone 3 - Warm-Humid/Warm-Dry (moderate heating and cooling). Homes here typically have higher cooling demands than heating.
Water heater sizing depends on peak demand—the most hot water you'll use at any one time. Here's what we factor in:
While our calculator gives you a solid recommendation, call a plumber when:
Generally, a family of 4 does well with a 50-65 gallon tank water heater, or a tankless unit rated for 7-9 GPM. But this varies based on usage patterns—if everyone showers in the morning, you might need more capacity.
It depends. Tankless heaters are more energy-efficient and last longer, but cost more upfront and have flow limitations. If you have low-to-moderate hot water demand spread throughout the day, tankless can be great. For high-demand households, a large tank or multiple tankless units might be better.
Tank water heaters typically last 8-12 years. Tankless can last 15-20+ years. Proper sizing helps maximize lifespan because the unit isn't constantly stressed by running at capacity.
Not necessarily. A slightly oversized tank wastes energy keeping extra water hot. It's better to size accurately and add a small buffer (10-15%) rather than going significantly larger.