Keeping a greenhouse clean is essential for plant health, pest control, and maximizing light exposure. Pressure washers are a powerful tool for this—but choosing the right one makes all the difference.

For greenhouse structures, electric pressure washers in the 2,000–2,500 psi range are commonly used to clean walls, gutters, and frames. Pressure can be fine-tuned using unloader valves to avoid damaging soft surfaces like polycarbonate panels and sealants. Too little pressure won’t clean effectively; too much can cause costly damage.

Flow rate plays a major role in cleaning power. Higher gpm helps rinse away debris more efficiently, especially when paired with foamers and surface cleaners. Use a wide spray pattern (e.g., 40° nozzle) to minimize surface impact. For tougher areas like concrete, turbo nozzles are highly effective.

Depending on your setup, both portable and wall-mounted pressure washers are popular. Portable units are easier to move but may be limited by flow rate and power requirements—especially if higher gpm demands a 3-phase motor or a 460 V / 600 V input.

Portable Pressure Washers

A popular portable option is the Canpump Electrojet CR5000: 5 hp Electric Pressure Washer, 240 V, Total Stop System. This unit delivers up to 2.9 gpm at pressures up to 2,500 psi. It features a wireless control-based Total Stop System (TSS) that automatically shuts off the pump when the trigger is released—saving energy and extending pump life.

Wall-Mount Pressure Washers

Wall-mounted units offer a wider range of flow rates, with some models reaching up to 12.9 gpm. These typically run on 3-phase 460 V or 600 V motors and can support multiple spray guns simultaneously. Many models include pressure switch-based TSS and can be customized with Relief Valves for added safety.

Model	Pressure Range	Flow Rate	Total Stop System (TSS)
Canpump Pressure Washer: Wall-Mount w/ Hose Reel, 5 hp, 240 V, Total Stop System	2,200–2,500 psi	2.9–3.4 gpm	Wireless
Canpump Wall-Mount Pressure Washer: 5 hp Full-Speed Motor 240 V, Total Stop System	2,400–2,500 psi	2.9–3.1 gpm	Wireless or Pressure Switch
Canpump Wall-Mount Pressure Washer: 4 hp Nicolini Motor 240 V, Total Stop System	2,100–2,500 psi	2.3–2.8 gpm	Wireless or Pressure Switch
Canpump Wall-Mount Pressure Washer: 7.5 hp Motor 240 V, Triplex Pump	2,000–3,000 psi	3.5–5.3 gpm	Wireless
Canpump Electric Pressure Washer: 15 hp Nicolini Motor 460V, Triplex Pump	1,800–2,800 psi	7.9–11.9 gpm	Pressure Switch available (Multiple gun options)

Accessories That Make a Difference

Pairing your pressure washer with the right accessories can dramatically improve cleaning speed and efficiency. Popular options include:

• P.A. LS 10 Foamer w/ Built-In Injector, 2,900 psi @ 6.5 gpm
• P.A. LS 10 Foamer w/ Tank, 2,900 psi @ 6.5 gpm
• Canpump 10-in Handheld Surface Cleaner, 4,000 psi
• P.A. UR25 Rotating Nozzle, 1/4-in F, 3,650 psi

Pressure washing is a powerful tool for greenhouse maintenance—but only when done right. Choosing the right electric pressure washer and accessories ensures your greenhouse stays clean, safe, and productive without risking damage to your plants or structure.

For help selecting the right equipment or for custom setups, reach out to us.