If you’re considering a new water heater, you’ve likely come across two main options: traditional tank water heaters and tankless water heaters. Both have their pros and cons, and the right choice depends on your home’s size, hot water needs, and budget. In this guide, we’ll break down the differences between the two so you can make an informed decision—and if you’re ready to upgrade, Shield Plumbing is offering 15% off all water heater installations this February, saving you up to $1,200!
Tank water heaters store and heat a large amount of water (typically 30-80 gallons) in a tank. The water is kept at a set temperature, so it’s always ready when you need it. However, once the hot water runs out, you have to wait for the tank to refill and reheat.
Tankless water heaters, also known as on-demand water heaters, don’t store hot water. Instead, they heat water instantly as it flows through the unit, providing a continuous supply without the need for a storage tank.
| Feature | Tank Water Heater | Tankless Water Heater |
| Hot Water Supply | Limited—can run out if demand is high | Endless hot water on demand |
| Energy Efficiency | Less efficient—keeps water heated constantly | More efficient—only heats water when needed |
| Lifespan | 8-12 years | 20+ years |
| Installation Cost | Lower upfront cost | Higher upfront cost, but long-term savings |
| Space Required | Large—requires a dedicated space | Small—wall-mounted, saves space |
| Best For | Larger households with high simultaneous water use | Smaller homes or families looking for long-term savings |
Choosing between a tank and a tankless water heater depends on your home’s size, budget, and hot water needs.
✔️ You have a large household with high hot water demand at the same time (e.g., multiple showers, dishwasher, and laundry running at once).
✔️ You want a lower upfront cost and don’t mind replacing the unit in 8-12 years.
✔️ You have existing gas or electric connections that support a tank system.
✔️ You want endless hot water, especially for households that stagger their showers and appliance use.
✔️ You’re looking for long-term energy savings—tankless systems are up to 34% more efficient than traditional tanks.
✔️ You want a smaller, space-saving unit—tankless systems are wall-mounted and free up storage space.
✔️ You plan to stay in your home long enough to benefit from the extended lifespan (20+ years).
Still unsure which system is best for your home? Shield Plumbing offers expert consultations and professional installation. Plus, for a limited time, we’re offering 15% off all water heater installations—including tankless models—saving you up to $1,200!📞 Call us today or schedule your free assessment to find the best water heater solution for your home.