There are a variety of water heater options. Water heaters come in many sizes, have several energy source options, and have various warranties available. There are gas, electric, oil, and green power options. There are tank type water heaters and tankless units. 

There are many sizes of residential and commercial gas, electric, and power vent water heaters. The 40 gallon and 50 gallon gas and electric water heaters are the most common hot water tanks for residential use. Although the 40 and 50 gallon size are most common, there are install 2.5 gallon point-of-use water heaters, up to 120 gallon water heaters for residential use. Our experts can guide you through the manufacturer’s sizing to help you select which size will be best for your needs. 

There are also a variety of sizes available for commercial use. Each commercial application is different so call our experts to schedule a free estimate, which will determine the commercial tank best suited for your business or multi-unit needs.

What size of tank do I need?

The capacity of a hot water heater should be based on the number of occupants and the peak hour water demand, regardless of the size of the house. The water heater should provide enough hot water at the busiest time of the day. Also consider the number of plumbing fixtures you have in the home. The more sinks you have, the greater the demand for hot water. Also consider extraordinary hot water demands, such as hot tubs.

The ability of a water heater to meet peak demands for hot water is indicated by its "first hour rating." Read more on first hour rating for further information. This rating accounts for the effects of tank size and the speed by which cold water is heated.