Pressure Washer Hose Buying Guide

High-pressure power washer hoses endure significant wear from the pressurized water they contain. After extended use or misuse, they eventually wear down and require replacement. It is recommended to use a replacement hose capable of withstanding the machine's specific pressure. The durable materials in these hoses are designed to resist kinking and curling, unlike standard garden hoses.  

There are four primary factors to consider when choosing a replacement hose: 

1. Length: This determines how portable the washer setup will be. 
2. Diameter: Hoses generally come in three widths: 1/4”, 5/16”, and 3/8”. 
3. Material: This determines the hose's flexibility and durability. 
4. Connections: This refers to whether the hose connections twist or snap together. 

Length 

The ideal length depends on whether the task involves washing a driveway, moving around an entire house, or cleaning a second story. For electrically-powered washers that must stay close to an outlet, choosing the correct hose length can mean the difference between frequently moving the entire setup and walking freely to the work area. 

Diameter 

Small (1/4") hoses are the most common. They are designed for consumer-grade electric and small gas power washers with pressure ratings up to 3,200 psi. 

Mid-sized (5/16”) hoses are the least common. They are rated for prosumer-grade gas pressure washers that can withstand pressures between 2,700–3,600 psi. 

Large (3/8”) hoses are designed for professional models and some prosumer-grade gas units. These hoses can withstand up to 10,000 psi of water pressure. Additionally, they are thicker to allow for greater water volume (GPM) 

Material 

High-pressure hoses are typically constructed from three types of materials: PVC Plastic, Rubber, and Polyurethane. The choice of material determines flexibility and durability, as well as whether the hose will leave marks on driveways or decks. 

PVC Plastic  

PVC hoses are the most common. While these hard plastic hoses are functional, they are not very flexible. Users who find themselves struggling with hose stiffness may consider upgrading to a rubber or polyurethane hose. 

Rubber  

Rubber hoses are heavier and more flexible than standard plastic hoses. They are less prone to kinking and curling. However, rubber hoses may leave black streaks on concrete surfaces as they are dragged across the work area. 

Polyurethane  

Polyurethane hoses are a newer market option. These consist of a steel-braided hose covered with a clear, bendable plastic casing. Professionals often prefer these because they offer the flexibility of rubber without the risk of marring surfaces. 

Connections 

Every hose features two connections: one for the pump and one for the spray gun. There are two primary ways to connect a hose to the pump: twisting or snapping them together. 

Connecting a hose to the gun can involve several fitting types: Male M22, Female M22, Male QC plug, Female QC plug, or a female 3/8-inch NPT. It is necessary to inspect the inlet on the gun to determine the correct fit. Most guns feature a threaded male connector, but some are female or utilize quick-connect plugs. 

• If a gun has a male thread, an ordinary replacement hose with two M22 threaded (female) connectors is required. One end screws into the pump, and the other screws into the gun. 
• If a gun has a male quick-connect plug, a professional-grade hose with a 3/8” female snap coupler should be used. 

Replace, Don't Repair 

High-pressure hoses are engineered to withstand extreme pressure for extended periods. If a hose is no longer holding pressure, it must be replaced rather than repaired. While a DIY fix may be tempting, water sealant or tape cannot restore the original integrity of the hose material, and attempting a repair can be a safety hazard.