Question

which of the following statements is false with respect to high - efficiency gas water heaters? the tanks are better insulated than conventional water heaters the tanks may be stainless steel the seasonal efficiency is 70 to 80 percent the exhaust gas temperatures are 100 to 150°f these are condensing systems question 30 1 pts all gas water heaters require a venting system for exhaust products isolating valves on the hot and cold supply piping enclosed water supply pipes temperature/pressure relief valves elevation off the floor 12 inches in a garage

Explanation:

High - efficiency gas water heaters are condensing systems with better - insulated tanks that may be stainless steel. Their exhaust gas temperatures are typically 100 - 150°F. Their seasonal efficiency is usually 90 percent or higher, not 70 - 80 percent. All gas water heaters require a venting system for exhaust products as well as temperature/pressure relief valves, and may have other features like isolating valves on supply piping.

Answer:

For the first question: the seasonal efficiency is 70 to 80 percent
For the second question: a venting system for exhaust products, temperature/pressure relief valves