 Call 1-800-618-5417. 1-800-618-5417. That's 1-800-618-5417. 1-800-618-5417. At Hudson Plumbing, trust in us to keep your showers hot and your energy bills cool. Is your water heater not performing like it used to? With our comprehensive water heater flush for just $89, you can ensure it runs efficiently and lasts longer.