Voltas doesn't have a specific punchline in the same way a brand like Nike has "Just Do It."

However, Voltas focuses on "Cooling Solutions" as their core value proposition. They use taglines that highlight this, like:

* "Feel the coolness."

* "Experience the difference."

* "Voltas. The cool choice."

They also use "Innovation in Cooling" as a brand message, showcasing their technological advancements in air conditioners and other cooling products.

Therefore, you could say the "punchline" for Voltas is the promise of delivering reliable, innovative, and efficient cooling solutions.