Absolutely. High water pressure is one of the leading causes of premature appliance failure. Your dishwasher, washing machine, water heater, and even ice makers have internal seals and valves designed for specific pressure ranges.
When pressure exceeds 80 PSI, these components work harder and wear out faster. Water heaters are particularly vulnerable—most manufacturers void warranties when pressure exceeds their specifications, leaving you responsible for expensive repairs or replacement.
Beyond appliances, high pressure causes toilet fill valves to malfunction, faucet cartridges to fail, and pipe joints to loosen over time. Installing a proper pressure regulator prevents this damage and saves money on repairs and replacements.