1 HP = 746 Watts
Read the power details on the manufacturer's plate and divide by 746 to obtain the HP rating...
If you want a ball-park figure without the trouble of moving the appliance(s) to view the details here's a list...
http://www.abaris.net/review/wattage_energy_consumption.htm
I am guessing ¼ HP or so...
Peccavi, April 2009