Fast Water Heater is fast! I own a duplex, and both water heaters failed -- one catastrophically! I went through Home Depot which set me up with Fast Water Heater. I used them before to install the non-catastrohpically failing water heater. Anyway, they replaced my super-leaking water heater and installed the new water heater (same-day), and replaced the thermocouple on my other water heater (which they had installed before). Julian L, the technician who helped me explained what he was doing and kept me informed to what he was doing. Plus he was an all-around nice guy.