A new dishwasher changes your daily routine from scrubbing dishes by hand to hitting a single button. The installation itself usually takes a pro about two hours, provided your existing plumbing is up to code.
Aim to shop during major holiday weekends like Memorial Day or Labor Day when retailers drop their prices. Always grab at least three quotes from local installers before you commit to one to make sure you aren't overpaying for the labor.
The 0% intro APR is a tool to help you manage cash flow, not free money. If you have a balance left when the 15 months end, the card will start charging interest on whatever is still owed.