Our AC is 17 years old. Recent service said it is in good condition. Don't replace until necessary. Hot water tank replaced 10 years ago only because Teco Gas was giving a hefty rebate which cost us next to nothing to replace. We put air/heat in our lanai with the small Mitsubishi unit which sits outside with a small unit high up on the wall in the lanai. Nice to have when you are not using the lanai and why air condition or heat when not in use.
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