Boxxer 323 HP The compact Boxxer 323HP offers twice the power of other machines its size, so jobs get done faster with a lot less work. Designed for residential and commercial jobs, it provides up to 210° F of temperature instantly! You can also do heated pressure washing at up to 2,500 psi! The maintenance-friendly design includes glass sights to monitor oil levels. Our unique last-step chemical injection system eliminates chemical buildup in the pump and heat exchanger.