What Causes Low Water Pressure and How to Fix It
Weak showers and slow-filling faucets are more than an annoyance — they can signal hidden plumbing problems. Learn what causes low water pressure and how to fix it.
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Most tank water heaters last roughly a decade, so age alone is a useful clue: if yours is pushing past that range, start planning rather than waiting for a failure. The clearer warning signs are rusty or discolored hot water, a rumbling or popping sound from the tank as sediment builds up on the bottom, water pooling around the base, or a household that suddenly runs out of hot water halfway through a shower. Any one of these is worth a professional look before a small problem becomes a flooded utility room.
When replacement time comes, the first decision is tank versus tankless. A tank unit stores a set amount of hot water and reheats it as it is used, which is simple and familiar. A tankless unit heats water on demand, so it never runs out in the same way, but it needs the right gas supply or electrical capacity and proper venting, and it costs more up front. The right choice depends on your household size, how many showers and appliances run at once, and what your home's existing connections can support.
A replacement visit usually follows a straightforward sequence. The technician shuts off the water and the gas or power supply, drains the old tank, disconnects it, and sets the new unit in place. Then come the connections that matter most: venting for gas units, the temperature-and-pressure relief drain line, and the water lines themselves. The unit is filled, checked for leaks, and tested through a full heating cycle before the old one is taken away. Ask in advance whether haul-away of the old unit is included so there are no surprises.
Two habits stretch the life of any water heater. Flushing the tank once a year clears sediment before it hardens and makes the burner or elements work harder, and checking the anode rod every few years matters because that rod is designed to corrode so the tank does not. If you are unsure about either job, it is a quick task during a routine visit.
If your water heater is showing its age or acting up, it is worth getting it checked before it fails on its own schedule. Water heater work is part of our plumbing service, and we serve the areas listed on our service areas page. Call Join Pro Home Services at +1 (603) 372-8478 to book a visit or get an upfront flat-rate price before any work starts.
💡 Quick takeaways
- Flush the tank once a year to clear sediment before it hardens.
- Check the anode rod every few years; it corrodes so the tank does not.
- Learn where your water heater shutoff is before an emergency, not during one.
- Set the thermostat to a safe temperature and test it after any adjustment.
- Insulate exposed hot-water pipes in cold spaces to cut heat loss.
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