Build Your
Pressure Washer
Setup Right
A step-by-step guide to every component — from the machine to the hose, gun, foam cannon, and accessories. Everything we carry, and everything we recommend.
Choose Your Machine
All of our pressure washers are electric, indoor/outdoor capable, and engineered for car detailing specifically — not the consumer box-store units. The right choice depends on how hard you plan to run it and what features matter most.
Budget-conscious.
| Machine | PSI | GPM | Amps | Pump Type | Hot Water | Best For |
|---|---|---|---|---|---|---|
| AR XP2 2300P | 2300 | 1.7 | 13 | Axial | No | Home / Occasional |
| AR675 Cold | ~2000 | ~1.7 | 15 | Brass | No | Weekend Detailer |
| AR675 Hot | ~2000 | ~1.7 | 13 | Brass | Yes | Weekend + Decon |
| AR630 Pro ★ | 1600 | 2.3 | 20 | Triplex Ceramic | No | Daily Professional |
| AR630HW | 1600 | 2.3 | 20 | Nickel Triplex | Yes | Pro + Hot Water |
| AR635 High-Flow | 1250 | 3.4 | — | Triplex | No | High-Volume Shop |
Hose & Connections
The hose connects your machine to the gun. For most setups you want a 50' working hose and the right fittings to connect every point in your system. All MTM Hydro hoses handle 4,000+ PSI and come with stainless quick connects pre-installed.
The main hose between your machine (or reel) and your spray gun. All options below ship with stainless QC fittings already installed — no separate adapters needed.
Adapters and quick-connect hardware for every connection point in your setup — from the garden hose inlet to the machine's M22 outlet to inline hose connections.
Connects your garden hose to the pressure washer's water inlet. The stainless 6-ball version holds up better in high-use environments.
Adapts the M22 threaded outlet on your pressure washer to a stainless 3/8" quick-connect plug, so your hose snaps straight on. Match the thread diameter to your machine: most AR machines use 15mm; some use 14mm.
Stainless couplers and plugs for connecting hose segments, lance extensions, or accessories anywhere in the line.
Spray Gun
The gun is what you hold and pull the trigger on. Look for stainless quick disconnects, an integrated swivel so the hose doesn't twist, and an easy-pull trigger for long sessions.
Foam Cannon
The foam cannon threads onto your spray gun and uses the pressure washer flow to generate thick snow foam. A good pre-foam lifts contact contamination before you touch the paint.
Accessories & Add-Ons
The accessories that take your pressure washer setup from functional to professional. Below you'll find nozzles with a machine compatibility guide, the undercarriage cleaner, pump maintenance, and foam cannon parts.
Quick-connect nozzles attach directly to your spray gun. The tip orifice size must match your machine's flow rate to maintain proper pressure. The degree controls spray pattern width.
| Machine | Recommended Tip Size | 25° Nozzle | 40° Nozzle | 4-Pack |
|---|---|---|---|---|
| AR XP2 2300P | 5.0 Orifice | ✓ Yes | ✓ Yes | 5.0 Pack |
| AR675 Cold / Hot | 5.0 Orifice | ✓ Yes | ✓ Yes | 5.0 Pack |
| AR630 Pro | 4.0 Orifice | ✓ Yes | ✓ Yes | 4.0 Pack |
| AR630HW | 4.0 Orifice | ✓ Yes | ✓ Yes | 4.0 Pack |
| AR635 High-Flow | 4.0 Orifice | ✓ Yes | ✓ Yes | 4.0 Pack |
Connects directly to your spray gun's quick disconnect — works with any of our guns on any of our machines. The spinning action is water-powered, no battery or motor required.
Protect your machine investment. Pump saver prevents internal corrosion during storage. Crankcase oil is required periodic maintenance on triplex pump machines.
AR Crankcase Oil: Required maintenance for AR machines with an oil-fill crankcase port (AR630 Pro, AR630HW, AR635). Check the oil level every 50 hours of use. Use AR-brand oil only.
The repair kit has every wear part for the PF22.2. The 1.5mm orifice is the best upgrade for low-PSI machines.
Water Supply & Storage
For shop-based setups, a hose reel keeps your 50' hose organized. For mobile detailers without access to a water hookup, an onboard water tank is the solution.
Wall or cart-mounted hose reels with brass swivel for full 360° rotation. Use a whip line between the machine and the reel inlet — it protects the machine fitting and lets the reel rotate freely. Then your 50' working hose runs from the reel to the gun.
If you're doing mobile detailing without a water hookup — driveways, parking lots, fleet lots — you need your own water supply. The 80-gallon tank gives you a full day of washing capacity.
Spot Free Water
Deionized (DI) water removes the minerals that cause water spots during the final rinse. The result is a spot-free finish that doesn't require drying — critical for coating-protected vehicles and high-efficiency operations.
We carry two brands: CR Spotless (the industry standard) and Spot Free Finish. Both produce water in the same TDS range — differences are form factor, flow rate, and resin capacity.
When your TDS reading climbs above ~10–15 ppm, it's time to replace the resin. Bulk resin refills are significantly cheaper than cartridge replacements — compatible with all major DI systems.
Pressure Washer Setup FAQ
Have questions about your build?
We've put together a lot of setups. Tell us what you're working with and what you're trying to accomplish — we'll point you in the right direction.