How to Buy a Natural Gas Water Heater
- 1). Calculate how much water your household requires during its busiest hour. ConsumerReports.org offers the following guidelines for water usage; shaving will require 2 gallons, washing your face and hands will require 4 gallons, preparing food will require 5 gallons, running the dishwasher will require 10 gallons, and a load of laundry or 10-minute shower will require 20 gallons.
- 2). Choose capacity and first-hour rating (FHR). FHR represents the maximum amount of hot water that can be generated in one hour of use. This is more important than the actual capacity for most households. The FHR should meet or exceed the estimated amount of hot water usage from Step 1.
- 3). Select a warranty, usually available in 6, 9 or 12 years. In most cases, a longer warranty will also represent a larger burner and more efficient water heating. Consumer Reports recommends selecting a longer warranties when using a water heater in conjunction with hard water or a water softener.
- 4). Measure the space where the water heater will be installed. Improved efficiency, from new federal energy standards, has increased the overall size of most water heaters. Ensure there is enough clearance on all sides, and the top, for the water heater to be installed correctly.
