Tankless Water Heaters: A 2009 Review »» MetaEfficient Reviews: "Let’s quickly review the advantages and disadvantages of tankless water heaters:
Advantages:
* Uses less energy (eliminates heat loss in tanks and through pipes)
* Continuous hot water (hot water doesn’t run out)
* Long life-span (20 years versus 13 for a tank heater)
* Compact size
Disadvantages:
* Some tankless heaters have difficulty coping with large households
* More expensive than tank water heaters
* Owners may wait longer for hot water to arrive at a faucet (depending on installation)"
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