Hello Steven,
You can still get the credit even if you get a refund. When they talk about tax liability they mean the amount of tax due on your taxable income.
Example $10,000 taxable income
Tax liability $1,000
Taxes withheld $1,500
Refund $500
Here is an article with the updated amount and details
https://turbotax.intuit.com/tax-tips/home-ownership/energy-tax-credit-which-home-improvements-qualif...
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"