Purchasing Tips — Gas Condensing Water Heaters

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ENERGY STAR qualified gas condensing water heaters are expected to reach the market later in 2009. If you want to take advantage of this new technology once it's available, start thinking about your purchase today.

  1. Plan ahead for more control. By waiting until your current water heater fails, you will leave little time to research and select a qualified gas condensing model. Your installer may need time to order the proper gas condensing model, and it can take longer to install than a standard gas water heater. To make your life easier, plan ahead and have one installed before it's an emergency.

  2. Check product availability. Find out what qualified models are available on the market by viewing the ENERGY STAR Product List. You may then need to visit manufacturer Web sites or call local installers to determine who carries these units in your area.

  3. Decide what size you need. The amount of hot water a model can deliver is measured by two things: The capacity or volume (in gallons) and the first-hour rating. You can determine the capacity of your existing unit by looking at the nameplate or yellow Energy Guide sticker. If your current water heater meets your needs most of the time, you can probably replace it with one the same size. But also take a look at the first-hour rating of any new model you consider. The first-hour rating measures how much hot water the unit can deliver during a busy hour. ENERGY STAR qualified gas condensing water heaters will achieve much higher first-hour ratings than conventional gas water heaters of the same capacity. This means you can get better hot water performance without having to buy a larger capacity water heater.

  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, but you will eventually need an installer to come to your home and give you a customized price. The installer should confirm the optimal size for you home and address all installation needs, such as venting, electrical service and condensate drainage. 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.

  5. Search for rebates and utilize tax credits. You may be able to reduce your costs by taking advantage of rebates or tax credits. Be sure to review the eligibility rules before you make your purchase.

    • Use the Special Deals Finder
      Determine whether there are rebates available for ENERGY STAR qualified water heaters in your zip code.
    • Utilize the Federal Tax Credits
      Every ENERGY STAR qualified gas condensing model will qualify for a $300 Federal tax credit in 2009.