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Our company specializes in servicing conventional and solar water heaters. Many times, the failure to recognize a small, easy-to-repair problem leads to an expensive — and unnecessary — replacement. Recently, for instance, a client who wasn't getting enough hot water "solved" the problem before consulting us by purchasing a bigger water heater. To make room for it, he had to move a wall. When the framing, drywall, and painting were finished, he called us in to hook it up. Afterward, we examined the old water heater. His cold water dip tube had broken off, so cold water had been entering at the top, diluting the hot water. A little troubleshooting could have solved this problem with a $5