Size a system, price an install, or quote ductwork in seconds. Enter the home square footage and climate to get the cooling tons and furnace BTU you need, then price the equipment and the duct.
That's the hard part done. SideWRK runs the rest from your phone: text the estimate, your customer taps approve, and the money hits — card, Apple Pay, Venmo, Cash App, or Zelle, no merchant account, no three-percent bite. It keeps a line on who still owes you, logs every material and cost so your real profit and your tax write-offs tally themselves, and stands up a free website with reviews that feeds you the next job. A free estimate today, or your whole operation in one app. Built for hvac and every trade.
The fastest way to lose money in HVAC is to guess the size — an oversized unit short-cycles, never pulls the humidity, and the callback is on you. So size the load first (square footage and climate get you close, a Manual J nails it), then price the equipment and the duct as their own lines. Quote the right ton, not the biggest one, and the system runs quiet and your warranty stays clean.
Run a blog or a business site? Paste this where you want the calculator to appear. It updates automatically, works on mobile, and adds a small credit link back — no cost, no sign-up.