Tank vs. Tankless Water Heaters: Which Is Right for Your Home?

When it’s time to replace your water heater, one question comes up fast:
Should you install a traditional tank water heater or go tankless?
At Garcia Plumbing Company, we’ve helped hundreds of homeowners in San Francisco make this exact decision — and in this post, we’ll walk you through the pros and cons of both, so you can choose with confidence.

What’s the Difference Between Tank and Tankless Water Heaters?

Tank water heaters store and heat a set amount of water — typically 40 to 50 gallons — and keep it hot until you need it.
Tankless water heaters, also known as on-demand systems, heat water instantly as it flows through the unit, meaning no storage tank is needed.

Pros and Cons of Tank Water Heaters

Pros

• Lower initial cost

• Easier and faster to install

• Reliable for families of 2–4 people

• Readily available parts and units

Cons

• Limited hot water supply (once the tank is empty, you wait)

• Higher energy use due to standby heating

• Larger space required for installation

Pros and Cons of Tankless Water Heaters

Pros

• Endless hot water supply

• Energy-efficient – only heats water when you need it

• Compact design – wall-mounted and space-saving

• Lasts up to 20 years with proper maintenance

Cons

• Higher upfront cost

• May require gas line or venting upgrades

• Requires routine maintenance

Which Is Better for Your San Francisco Home?

The right choice depends on your household size, water usage habits, and budget. Here's a quick breakdown:

Get Expert Help from Garcia Plumbing Company

We’ve installed hundreds of tank and tankless water heaters across San Francisco and can help you choose the system that fits your needs, your space, and your budget.

• All our water heater installs include:

• Removal of your old unit

• Full install, testing, and clean-up

• Inspection and compliance with SF codes

• Our Satisfaction Guarantee

Ready for Hot Water That Works for You?

Click below to schedule your free water heater estimate and take advantage of our $100 OFF promotion – valid until April 30th!