Compare with normal use
What are the most common water heater problems?
The water may stay lukewarm, fluctuate between temperatures or run out sooner than it did previously. Some heaters take longer to produce hot water. Discoloration, unfamiliar odors, lower pressure and leaking around the unit are other changes that should be included in a service request.
Describe what happens during ordinary use and how long you have noticed it. Mention noises as well as temperature changes. These observations help organize the inspection, but several faults can produce similar behavior, so the symptom alone does not select the repair.
