Written by Choosing between a tank water heater and a tankless water heater is an important decision for homeowners looking to improve energy efficiency, reduce costs, and ensure a reliable hot water supply. Each type has its pros and cons, depending on your household size, budget, and energy needs.
If you’re considering a new water heater in Repentigny, Plombier Repentigny provides expert water heater installation and replacement services to help you choose the best option for your home. Let’s break down the key differences between tank and tankless water heaters to help you make an informed decision.
What Is a Tank Water Heater?
A tank water heater stores and heats water in a large insulated tank, typically ranging from 30 to 80 gallons. When you turn on a hot water tap, the heater releases preheated water from the tank.
✔ Pros:
✅ Lower initial cost compared to tankless models.
✅ Provides hot water even during power outages (for gas-powered models).
✅ Easier and cheaper to install.
❌ Cons:
⏳ Limited hot water supply—once the tank runs out, you must wait for it to refill.
💰 Higher energy bills due to constant heating (even when not in use).
📏 Takes up more space in basements or utility rooms.
🚨 Best For: Larger households that require hot water for multiple appliances at the same time.
What Is a Tankless Water Heater?
A tankless water heater (also called an on-demand water heater) heats water only when needed, eliminating the need for a storage tank. It uses either gas or electricity to instantly heat water as it passes through the unit.
✔ Pros:
✅ Unlimited hot water—never run out during showers.
✅ Energy-efficient—heats water only when needed, reducing utility bills.
✅ Space-saving design—mounts on walls and takes up less room.
❌ Cons:
💰 Higher initial cost compared to tank models.
⚡ Requires adequate gas or electrical upgrades, which may add to installation costs.
🔧 More complex maintenance and potential for higher repair costs.
🚨 Best For: Energy-conscious homeowners or small households that don’t use hot water for multiple tasks at once.
Tank vs. Tankless: Key Comparisons
| Feature | Tank Water Heater | Tankless Water Heater |
|---|---|---|
| Hot Water Supply | Limited (depends on tank size) | Unlimited, on-demand |
| Energy Efficiency | Less efficient (heats water 24/7) | More efficient (heats water only when needed) |
| Upfront Cost | Lower ($800–$2,500 installed) | Higher ($2,500–$5,000 installed) |
| Lifespan | 10–15 years | 20+ years |
| Space Requirement | Requires a large storage tank | Compact, wall-mounted |
| Best For | Large households with frequent hot water use | Smaller homes or energy-conscious homeowners |
Which Water Heater Is Best for You?
✔ Choose a Tank Water Heater If:
- You have a larger household with high water usage.
- You want a lower upfront cost.
- You don’t mind a limited hot water supply.
✔ Choose a Tankless Water Heater If:
- You want unlimited hot water and better energy efficiency.
- You have limited space and need a compact solution.
- You’re willing to invest more upfront for long-term savings.
Need a Water Heater Installation? Call Plombier Repentigny!
Still unsure which water heater is right for you? Plomberie Rive Nord offers expert consultation, installation, and repair services for both tank and tankless water heaters in Repentigny. Our team can help you choose the best option for your home and budget.
Written by 
Written by