The cost to fix low water pressure in a house can range anywhere from $150 to $2,500 or more, depending entirely on the underlying root cause of the restriction. Simple fixes, such as cleaning clogged faucet aerators or adjusting a pressure reducing valve (PRV), typically cost under $250. Replacing a faulty whole-house PRV runs $250 to $600. However, if low pressure requires installing a motorized whole-house water pressure booster pump system, total equipment and professional installation labor costs range between $900 and $2,500. Verification: Check water pressure gauges and faucet flow rates after repairs to confirm normal operation.
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