Both Lowe’s and The Home Depot are trusted national retailers of Rinnai tankless water heater products. They carry a wide variety of options, sizes and capacities, so you can choose the Rinnai tankless gas water heater that best suits your needs and space. They also carry the necessary additional components (such as venting and recirculating pump parts) that may be necessary for a licensed contractor to install your unit. It’s important to note that we recommend installation by a licensed contractor. Click here to find a Rinnai-trained professional.