grooming shower

Hi does any one know if theres any way i can get hot water into my garage without having to use a pipe from my kitchen !! the water keeps going hot, warm then cold and its a right pain ive got electric in my garage so i could get an electric shower fitted but i was just seeing if there would be a cheaper alternitive as im selling house to move some where a bit bigger, so trying to save my pennies at the mo!!

thanks