Need a new water heater? We’ve got you covered. Installing a water heater can be a difficult process, but Stack is here for you. Whether you’re replacing an old one, installing the first water heater in a brand-new home, or installing a new one in a home you’re renovating, Stack can install it for you. We can install any of the five main types of water heaters (conventional, solar powered, tankless, heat pump, or condensing).