I estimate the full retail price of the 2 gallon thermal expansion tank to be about $30. The water pressure regulator was maybe $150 and a water pressure gauge about $20. If my estimates are anywhere close to correct, I paid about $570 for 1.5 hours of labor. The manufacturers specs require the thermal expansion tank to be installed vertically. It was installed horizontally. No support was installed to support the tank. The technician was obviously skilled and gave me an accurate estimate for the work to be performed. But he should have taken the time to install the thermal expansion according to the manufacturer's instructions.
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