I didn’t think much about water pressure problems until a friend who owns a 1930s bungalow in Asheville’s Montford neighborhood called me about her washing machine.
The washer hose had started swelling around the connection. At first, she thought the hose itself was defective. A pressure gauge told a different story: the home’s water pressure was higher than expected.
I live in Georgia, but I’ve helped my friend deal with some of the quirks of owning an older Asheville house. Her experience reminded me that an appliance problem isn’t always caused by the appliance itself.
For owners of older homes, water pressure is easy to overlook. Too-low pressure can point to restricted or aging plumbing, while excessive pressure can stress hoses, valves, and other water-connected components.
Key Takeaways
- Older Asheville homes can experience either low or excessive water pressure.
- Corrosion and buildup inside aging galvanized pipes can restrict water flow and contribute to low pressure.
- High water pressure can put extra stress on washer hoses, dishwasher valves, refrigerator lines, and other water-connected components.
- A $10 to $15 hose-bib pressure gauge can quickly show your home’s water pressure.
- Consistently low readings below 40 psi or high readings above 80 psi are worth investigating.
- Repeated appliance problems may be related to water pressure, so test the pressure before replacing an appliance.
Why Older Asheville Homes Can Have Water Pressure Problems
Water pressure isn’t necessarily the same from one house to another. Older properties may still have galvanized steel supply pipes, which can become restricted as corrosion and buildup accumulate inside them. The result can be weaker flow, particularly at fixtures farther from the main supply or on upper floors.
Other homes can experience the opposite problem. Incoming pressure may consistently exceed what the plumbing or appliances are designed to handle.
Homes supplied by private wells can also experience fluctuations as the pump cycles.
Because several different problems can produce similar symptoms, measuring the pressure is often a better starting point than guessing at the cause.
How to Test Your Home’s Water Pressure
Checking water pressure is relatively simple. A hose-bib pressure gauge, available at many hardware stores, can provide a reading for roughly $10 to $15.
To check it:
- Turn off the washer, dishwasher, sprinklers, and other water-using equipment.
- Attach the gauge to an outdoor spigot.
- Open the faucet fully.
- Read the pressure in psi.
- Take another reading at a different time to see whether the pressure changes.
As a general troubleshooting guideline, consistently low readings below 40 psi or high readings above 80 psi are worth investigating. Individual appliances can have their own requirements, so check the manufacturer’s specifications.
Testing the pressure can help determine whether a water-related problem is coming from the home’s plumbing or the appliance itself. For washer problems that involve other symptoms, basic troubleshooting can help rule out common causes before focusing on water pressure.
What High Water Pressure Can Do to Appliances
High pressure doesn’t necessarily destroy an appliance immediately. Instead, it can place additional stress on the components that connect the appliance to the home’s water supply.
Pay attention to signs such as:
- Washer hoses that bulge, seep, or fail around the connection
- Dishwasher inlet valves that leak or wear prematurely
- Small leaks in refrigerator ice-maker lines
- Water-heater pressure problems
- Toilet fill valves that intermittently run or hiss
One failed hose doesn’t necessarily mean your home’s pressure is too high. However, if similar problems occur on multiple appliances, water pressure should be part of the diagnosis. For homeowners dealing with recurring appliance problems, appliance repair in Asheville, NC, can help identify whether the issue is isolated to the appliance or connected to another problem in the home.
Replacing an appliance without addressing an underlying pressure problem may simply set the stage for another failure.
What Low Water Pressure Can Mean
Low flow throughout the house points toward a different set of possibilities.
In an older home, galvanized supply pipes can gradually become restricted as corrosion builds up inside them. Some signs include:
- Water flow that has gradually become weaker
- Poor pressure on upper floors
- Weak flow at fixtures farther from the main line
- Rust-colored or discolored water
If the problem affects multiple fixtures rather than one appliance, the home’s supply plumbing deserves attention. A plumber can determine whether the issue is related to the supply piping or another part of the system.
What About the Pressure-Reducing Valve?
If incoming water pressure is high, a home may have a pressure-reducing valve, or PRV, near the main shutoff.
A PRV is typically a bell-shaped fitting with an adjustment screw. A pressure gauge can help determine whether the system is maintaining a consistent pressure.
A confident DIYer may be comfortable checking an existing valve. Replacing or installing a PRV is different because it involves the home’s pressurized main water supply. That work is generally better left to a licensed plumber.
Why an Appliance Problem May Actually Be a Plumbing Problem
My friend’s washer was a good example of why it’s worth looking beyond the appliance itself. The hose wasn’t particularly old when she noticed it swelling. Testing the home’s pressure revealed another possible explanation for the failure.
Once she addressed the pressure issue with a PRV, she better understood what had happened.
A neighbor later encountered a similar problem involving a dishwasher line. That experience reinforced the same point: when a water-connected component fails, replacing the part may not solve the underlying problem.
The useful question isn’t always, “What’s wrong with the appliance?” Sometimes it’s, “What conditions is the appliance operating under?”
When to Call a Plumber or Appliance Repair Company
The right professional depends on where the problem appears to be coming from.
If water pressure is weak throughout the house, water is discolored, or several fixtures have poor flow, a plumber is the better place to start. Those symptoms can point toward the home’s supply plumbing.
A problem limited to one appliance may call for an appliance repair company to inspect the appliance and its connections. Appliance EMT can help Asheville homeowners diagnose appliance problems and determine whether water pressure may be contributing to a recurring failure. For issues affecting the home’s overall water supply, however, a plumber is the better place to start.
If you’ve already replaced hoses, valves, or another water-connected component and the problem keeps returning, checking your home’s pressure can provide useful information before you spend more money on another replacement.
Frequently Asked Questions
How do I know if water pressure is affecting an appliance?
Repeated problems with hoses, valves, or water lines are a reason to check the home’s pressure, particularly when similar problems affect more than one appliance.
Can I install a pressure-reducing valve myself?
You can inspect an existing PRV if you’re comfortable with basic DIY plumbing. Installing or replacing one on the main supply line is generally a job for a licensed plumber.
What water pressure should I have?
As a general troubleshooting guideline, consistently below 40 psi or above 80 psi deserves investigation. Always check the pressure requirements for individual appliances, too.
Can high water pressure affect an appliance warranty?
Potentially. Warranty terms vary by manufacturer, and some warranties may exclude damage caused by operating conditions outside the appliance’s specifications. Keeping a record of your home’s pressure can help when troubleshooting repeated failures.
What Your Water Pressure Can Tell You
Water pressure is one of those household issues that can remain invisible until something starts leaking, wearing out, or failing.
In an older Asheville home, aging supply pipes can reduce flow, while excessive pressure can put unnecessary stress on appliance hoses and valves. A simple pressure-gauge test can help you decide where to focus.
My friend’s washer initially looked like an appliance problem. Testing the water pressure showed that the plumbing deserved a closer look too.
Before replacing an appliance because of a recurring water-related problem, it may be worth checking the pressure first. A $10 to $15 gauge can provide useful information in a few minutes and help you decide whether to call an appliance repair company, a plumber, or both.
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