Stainless steel has a directional grain. Wiping against it — or scrubbing in circles — creates fine scratches and swirl marks that become permanent. Find the grain direction and always wipe along it.
Gentle is better. Harsh pads and abrasive powders do lasting damage.
Wipe smudges as they happen, do a light stainless polish weekly, and leave the deep work — the interior, filters, and accessible exhaust — to an annual professional cleaning. That combination keeps the exterior flawless and the system performing.
Quick answers
Diluted, it can help with spots, but always test a small area and finish along the grain. A stainless cleaner is safer for premium finishes.
Light haze often improves with grain-direction polishing; deeper scratches in the metal can’t be polished out.
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