Can I claim compensation for loss of business due to a defective product I purchased for commercial use?

Yes, if the defective product caused you demonstrable business losses — such as lost income during downtime, or additional costs incurred as a direct result of the defect — you can generally include these losses as part of your compensation claim against the seller or manufacturer, provided you can reasonably quantify and support them with evidence.

Whether you pursue this through a consumer complaint depends on whether the equipment qualifies as being purchased for "commercial purpose" in a way that might exclude standard consumer protection coverage, versus being used incidentally for your self-employment or livelihood, which is often still covered — this distinction can matter and is worth clarifying with a lawyer based on the specific nature of your purchase and business.

Regardless of the specific forum (consumer complaint or civil suit), you'll need solid documentation — the defect itself, repair/service records, and financial evidence of the actual business losses suffered (such as comparative revenue figures for the downtime period) — to support a meaningful compensation claim beyond just the product's own price. A lawyer can help assess the right forum and how to best document and present your loss claim.