High efficiency models simply have better insulation, heat traps, and more efficient burners; improvements that have a modest impact on price but increase efficiency by about 7.5%. To increase efficiency further, manufacturers may add a power vent to accelerate the venting of combustion gases.

High efficiency gas storage water heaters are currently available from contractors and retailers. If you need to replace your gas water heater soon, consider these suggestions:

1. Plan ahead if you can. By waiting until your current water heater fails, you will leave little time to research and select a high efficiency gas storage model. To make your life easier, try to have a new one installed before it's an emergency.
2. Check product availability. Find out which models qualify for Southwest Gas' rebate by visiting www.conservationrebates.com, or calling 1-866-802-7790.
3. Decide what size you need. If your current water heater meets your needs most of the time, you can probably replace it with one the same size. When evaluating new models you should also look at the first-hour rating to see how much hot water the model can deliver during a busy hour. You may want to purchase a larger capacity unit, or one with a higher first-hour rating, if you have added or are planning to add more occupants to your household or are installing an additional shower, faucet, dishwasher, or washer that will be in frequent use. A contractor or retail salesperson can help you decide if a larger model is necessary.
4. Get a quote from a contractor or retailer. You may want to check a manufacturer or retailer's web site to get a general idea of cost. When requesting a quote, remember to:
   • Request cost estimates in writing.
   • Ask for references.
   • Check the company with your local Better Business Bureau.
   • See if the company will obtain a local permit if necessary and understands local residential building codes.

Source: EnergyStar.gov

RETURN TO: High-Efficiency Equipment Rebate Program