We're planning a $70,000 residential solar installation (panels, new roof, and battery) and we were expecting to use a traditional 10 year HELOC from our mortgage bank at 6%APR. Someone recently recommended we apply for credit cards with introductory 0%APR rates to cover some of the cost and reduce our effective interest payments.
We have an >800 credit score, and no debt besides the $230k left on our mortgage. Our mortgage is about $2,000/month and we pay ~$3000/month in other family household expenses.
Is it feasible to use credit cards to help finance this kind of project? Is there anything we need to be aware of if we try this?