Radiator Calculator Pro vs PrintToDevice

Room-by-room radiator sizing. Watts and BTU/h output for any room, factoring volume, glazing, external walls, roof and floor exposure, and insulation standard. Calculation Heat output per room with adjustments for: • Room type (8 presets: bedroom, living room, bathroom, kitchen, hallway, office, conservatory, garage) • Internal volume • Window-to-floor ratio • Number of external walls (0–4) • What's above (loft, pitched roof, flat roof, heated space) • What's below (garage, unheated cellar, uninsulated floor, heated floor) • Insulation level: poor (older single-glazed) → average (modern build) → good → excellent (new-build, triple-glazed) • Mean water temperature - ΔT30, ΔT35, ΔT40, ΔT50, ΔT60 ΔT correction uses the standard panel-radiator exponent (n = 1.30) per EN 442 testing convention. A 5% safety margin is applied to avoid undersizing. Heat-pump systems Select ΔT35 or ΔT30 to spec radiators for low-temperature systems. Output is rescaled — a 1000W ΔT50-rated radiator delivers ~630W at ΔT35 — so you size to actual delivered heat, not nameplate. Output • Watts and BTU/h side-by-side • Metric or imperial dimensions • Whole-home heat-loss total • Share or export room specs as text For plumbers, heating engineers, and heat-pump installers sizing radiator schedules, and homeowners or landlords running their own jobs.

PrintToDevice turns your iOS device into a virtual printer that allows you to print directly to your phone or tablet from your other devices. Simply open the app, find your unique printer name at the bottom of the screen and search for that device when adding a printer. Once the printer is added, you can print to it from any application as you normally would. The only difference being that the print goes direct to the device and not onto paper. If printing from another phone or tablet, simply select your printer from the list of printers when you go to print. There are no drivers to install and it should just work. Remember that your device and the device you are printing from must be on the same Wi-Fi network. If that's not possible you can always connect your devices together using your personal hotspot.