A ductless mini-split changes your home comfort immediately, giving you zoned heating and cooling without noisy window units or bulky ducts. Most installs take just a day or two, and booking them in early autumn is your best move since HVAC companies have fewer emergency calls and are way more willing to talk numbers.
You are looking at about $4500 for a standard setup, so do not just call the first company you find. Get at least three quotes to compare equipment brands, labor warranties, and total costs before you sign anything.
That 0% intro period is a hard deadline, not free money, so treat the monthly payment like a utility bill. If you still have a balance left when the 15 months end, the regular interest rate kicks in on whatever is left.