A refinance is a loan: you remain the owner, the lender takes a security interest, and payments amortize to a payoff. Interest is deductible as paid and the asset stays on your books depreciating as before. It is the simpler structure and the default recommendation when the goal is payment relief or moderate cash-out.
A sale-leaseback sells the equipment to the financing company and leases it back: title transfers, you receive the sale proceeds as cash, and the lease payments buy continued use — often with a buyback at term end. It can raise more cash against the same asset and can suit companies that want the obligation structured as a lease, but the tax and accounting treatment differs meaningfully from a loan, and the end-of-term terms deserve close reading. Which structure nets out better is a question for your CPA as much as your lender; we structure both and will lay the comparison out plainly.
Either structure can also fold into a broader package — equipment equity is frequently the collateral that makes an asset-based facility or consolidation work. And when the goal is acquiring new equipment rather than unlocking owned equipment, that is equipment financing, covered on its own page.