Solar Water Heaters
Eco-friendly systems that use solar panels to heat water. Great for sunny climates and long-term savings.
Solar Water Heaters vs Storage Tank Water Heaters
Key Takeaway
Solar Water Heaters are best for sunny climates (southwest, southeast, hawaii), homes with south-facing roofs, and homeowners planning to stay 10+ years, while Storage Tank Water Heaters are best for most homes, budget-conscious buyers, straightforward replacement of an existing tank, and areas where gas is cheap. Compare features, pricing, and pros & cons to choose the right option.
Side-by-Side Comparison
| Feature | Solar Water Heaters | Storage Tank Water Heaters |
|---|---|---|
| Best For | sunny climates (Southwest, Southeast, Hawaii), homes with south-facing roofs, and homeowners planning to stay 10+ years | most homes, budget-conscious buyers, straightforward replacement of an existing tank, and areas where gas is cheap |
| Price Range | $3,000-$7,000 installed (before 30% federal tax credit) | $400-$1,200 for unit ($700-$2,000 installed) |
Solar Water Heaters — Pros & Cons
Pros
- 50-80% reduction in water heating costs in sunny climates
- 20-30 year lifespan for solar collectors -- longest of any water heater type
- Federal tax credit (30% of total system cost) plus state incentives
- Zero operating cost for the solar portion -- free energy from the sun
- Reduces household carbon footprint significantly
Cons
- Highest upfront cost of any residential water heater -- $3,000-$7,000+ installed
- Requires south-facing roof with minimal shading and adequate structural support
- Backup heater still needed for cloudy days and high-demand periods
- Climate-dependent -- poor performance in cloudy or cold northern regions
- Maintenance includes annual glycol fluid checks and pump inspection on active systems
Storage Tank Water Heaters — Pros & Cons
Pros
- Lowest upfront cost -- $400-$1,200 for the unit, $300-$800 for installation
- Simple technology that every plumber knows how to install and repair
- Handles simultaneous hot water demand well (sized correctly)
- No electrical upgrades or gas line upsizing needed for replacement
- Parts are universal, cheap, and available at any hardware store
Cons
- Standby heat loss -- energy wasted keeping 40-80 gallons hot 24/7 even when nobody is using it
- Runs out of hot water when demand exceeds tank capacity (no unlimited hot water)
- 8-12 year lifespan -- shorter than tankless (20 years) or heat pump (15+ years)
- Large footprint -- 60+ inches tall, 20+ inches diameter, needs dedicated floor space
- Tank can rupture catastrophically at end of life -- 40-80 gallons of water on the floor
About These Types
Storage Tank Water Heaters
Traditional water heaters with insulated tanks that store and heat water continuously. Most common residential option.
Frequently Asked Questions
What is the difference between Solar Water Heaters and Storage Tank Water Heaters?
Solar Water Heaters are best for sunny climates (southwest, southeast, hawaii), homes with south-facing roofs, and homeowners planning to stay 10+ years, while Storage Tank Water Heaters are best for most homes, budget-conscious buyers, straightforward replacement of an existing tank, and areas where gas is cheap. Compare features, pricing, and pros & cons to choose the right option.
Which is better: Solar Water Heaters or Storage Tank Water Heaters?
It depends on your needs. Solar Water Heaters are best for sunny climates (southwest, southeast, hawaii), homes with south-facing roofs, and homeowners planning to stay 10+ years, while Storage Tank Water Heaters are best for most homes, budget-conscious buyers, straightforward replacement of an existing tank, and areas where gas is cheap.
Which is more affordable: Solar Water Heaters or Storage Tank Water Heaters?
Solar Water Heaters typically cost $3,000-$7,000 installed (before 30% federal tax credit), while Storage Tank Water Heaters cost $400-$1,200 for unit ($700-$2,000 installed).