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How Often Does the Oil in My Whole House Generator Need to Be Changed?


One of the best ways to keep your whole home generator reliable is to make sure it is properly maintained. To do this, you should schedule your generator for annual maintenance with trained experts, but you should also run your generator every month and also make sure that the oil has been changed enough. Your Design Air, Inc., generator technician will change the oil during your annual maintenance appointment, but there may be some other times when it should be changed again.

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Times for Oil Changes

The rule of thumb for changing the oil in your whole home generator is to do it annually or each time after 200 hours of service. This amount of hours translates about 8 ½ days of power, and while we hope you won’t ever need your generator that long, it’s an important item of which to keep track. To know exactly what kind of oil to use, consult your generator’s product manual. As for amount of oil, your whole house generator will typically take two quarts.

Other Items

Here are a couple of other items that should also be changed out:

  • Spark plugs – a year’s use can make your generator’s spark plugs dirty, worn out and covered in a layer of dust and dirt. Changing out the spark plugs helps your generator to work better.
  • Air filter – just as a car’s air filter can become clogged with dust and dirt, your generator’s air filter can, too. This is why it’s important to have your air filter changed out during annual maintenance.

All of these tasks can be handled by your Design Air, Inc., professional during a routine maintenance appointment, or any other time you need help with your whole home generator in Ramsey, NJ. Just give us a call!