...hot water that goes down the drain carries away energy...typically 80–90% of the energy used to heat water in a home. Drain-water (or greywater) heat recovery systems capture this energy...
| Everyday water enters your home cold at 40 Fahrenheit (F), you heat it up to shower at about 100 F and then dump it down the drain. We can use this warm water exiting your home to pre-heat the cold water coming into your home from 40 F to 70 F or more. A drain water heat recovery (DWHR) unit can lift incoming water temperatures by approx. 30 F - if the overall rise in temperature required for shower temperature is 60F, the DWHR unit will have provided half that energy simply from what you are throwing away. Water is the most expensive natural element to heat. Imagine if every home in your city or state had a DWHR unit installed in their home and business. Now imagine all the people that have a shower between 6 am and 8 am. What if we cut that consumption by 30-50%? |
contractors discount
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