Summak Spirejo

Summak Spirejo is the professional draught bench for chimney sweeps and heating engineers. Feed in your appliance, fuel, flue geometry, and terminal, and the app solves the full pressure balance in real time, telling you whether the stack Draws, sits Marginal, or Spills, with the exact pascal margin in hand. The built-in physics engine works from first principles: available buoyancy against friction losses, bend resistance, terminal drag, altitude correction, and air-supply penalty. Six instrument tiles on the Bench read out every pressure term. A year-round spill-risk grid shows the worst days at a glance. Change any segment and the verdict recalculates instantly. No network connection is ever needed. The Roof screen overlays the statutory terminal-height envelope on your own photograph of the building. Place two scale pins on the image and Summak Spirejo draws the 600 mm ridge rule, the 2.3 m horizontal band, and the 45-degree influence cone of any adjacent ridge or obstruction, then reports the clearance or shortfall to the millimetre. The Fault Key catalogues eight common chimney faults, filterable by the symptoms you observed on the day. Each entry names the pressure term it attacks, the diagnostic test that proves it, and the available remedies with the pascal improvement each would deliver. Tap a remedy and the Bench re-solves immediately. Finish a job by completing the Sweep Card and exporting a report plate to your camera roll, ready for the client file. All data is stored locally on your device. There is no account and nothing leaves the phone.