1. Replacing your water heater;ACEEE,2015
2. Residential automatic storage water heater historical data;AHRI,2016
3. Technical reference - source energy;DoE,2013
4. 10 CFR, Part 430, subpart B, appendix E - uniform test method for measuring the energy consumption of water heaters;DoE,2015
5. Everything you need to know about water heaters;DoE,2015