Tiang: 3D Home Energy Planner

Some rooms are always too hot. Tiang tells you which ones — before you
build.

Draw your floor plan and Tiang runs real building physics over it: the sun
on your roof, the heat through your walls, the air in every room, hour by
hour, using actual weather for where you live.

Other home design apps show you how a room looks. This one shows you how it
will feel.

▸ FIND THE HOT ROOM
A room-by-room heat map across a full day. Watch the afternoon sun move
across the plan and see which rooms climb, which hold, and which never
recover overnight. Then find out why — orientation, glazing, roof colour,
or missing home insulation.

▸ SIZE THE AIR CONDITIONER PROPERLY
An AC size calculator that reads your actual building instead of a rule of
thumb. Cooling load from room volume, wall construction, window area and
local climate — a real HVAC calculator, so the unit you buy matches the
room you built.

▸ TRY A FIX, THEN RE-RUN
Swap brick for lightweight panel. Add roof insulation. Move a window.
Change the roof colour. Every change re-runs in seconds and you see what it
did to the temperature. Home insulation you can measure rather than argue
about.

▸ THE COLD MONTHS COUNT TOO
The same physics in reverse. See where heat escapes, how long a room stays
warm after the heating goes off, and what wall or roof changes do to your
home heating demand through winter.

▸ DAMP BEFORE IT BECOMES MOULD
Humidity modelling shows condensation risk room by room, so you find the
cold corner before the wall does.

▸ AND THE WIFI
Map coverage through your actual walls. Find out which room the signal dies
in and which wall is responsible.

▸ WHAT IT COSTS TO RUN
A home energy calculator built on the layout you drew — appliances,
lighting, heating and cooling. Add rooftop panels for a solar calculator
estimate of output and payback.

▸ WHAT YOU CAN DRAW
- Walls, doors, windows, arches and balconies at real dimensions
- Multiple storeys with stairs and custom roof shapes
- Furniture, fans, air conditioners, heaters, lights and wiring
- Walk through the finished house in full 3D
- Photograph a printed floor plan and trace it automatically
- Metric or imperial
- Works offline. Drawing and saving are always free

▸ WHO USES IT
You, if one bedroom is always the hot one. Anyone building or renovating
who wants to know how the place will feel to live in. Installers who need
to show a client why. Students learning why buildings behave the way they
do.

▸ TAKE IT WITH YOU
Export a PDF with floor plans, an object schedule and your results — for a
builder, a client, or your own records.

▸ FREE AND PRO
Drawing, editing and saving are free and unlimited, always. A free account
includes 10 simulations a month, 5 timelapses and 3 PDF exports. Tiang Pro
lifts the limits and lets you compare scenarios side by side.

12 languages. Android phones and tablets.

Draw it. Then find out how it feels.