Hot Water Tank
- Initially lower cost to buy and install
- Cheaper to maintain
- Easily accessible to purchase at all Depots.
- Take space on floor
- Risk of bacteria in standing water
- Risk of water leaking
- Water may run out soon so you need to wait 1-2 hours before it recharge
Hot Water Tankless
- do not require a tank to hold water, space saver.
- less of a leaking risk
- Provide hot water almost immediately
- No standing water—No bacteria
- Extremely long operational life if maintain periodically .
- Expensive option to buy as compare to tank.
- Some models may cause cold water sandwich if water demand is more and supply it less.
- Supply gas line coming into house may require upgrading
- 2 pipe venting could be challenging if basement is finished.