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Joeyjr Member Posts: 10
What is the easiest, quickest way to check the anti-freeze in a heating system?


  • furnacefigher15
    furnacefigher15 Member Posts: 514

    use a refractometer.

    also a automotive antifreeze tester will get you close. but they are for ethylene glycol.

    heating system should have propylene glycol.
  • icesailor
    icesailor Member Posts: 7,265

    And most Refractometers will do both kinds of anti-freeze and lead acid batteries.
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