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+ The prices of small capability (like 60-80litre) electric water heaters are cheap. + Electric water heaters' energy consumption is huge. The COP is only 0.9. + Electric water heaters' safety is not as good as heat pumps. It may have some potential danger like electric leakage and explosion to use electric water heaters. + The capacities of electric water heaters are small, and the water tanks are usually horizontal. The heating water ability is not so ideal. Recommend reading: Why Selecting Heat Pumps as Your Water Heaters is a Must? |
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