Is this good for educators?

Yes — this version of "Insulation Optimizer for a net-zero home" is framed for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs.

Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For Educators · Insulation Optimizer

Insulation Optimizer for a net-zero home

Built for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs. Simulate a net-zero home live below — adjust the inputs and watch it respond, right in your browser.

Thermal Resistance

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Composite Wall Heat TransferLive

R-value & U-value

Controls

Presets

Drywall (mm)

Insulation (mm)

Brick (mm)

Inside temp (°C)

Outside temp (°C)

Heat flows through a wall like current through resistors in series. Each layer's thermal resistance is its thickness over its conductivity; adding them gives the total R-value, and the heat flux is the temperature difference divided by it. Insulation, with very low conductivity, dominates the R-value — the steep temperature drop shows where it does its work.

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Data Inspector

Total R-value2.71 m²K/W

U-value0.37 W/m²K

Heat flux9.6 W/m²

Governing equation

R = \sum \frac{L _{i}}{k _{i} A} = 2.71 \frac{m ^{2} K}{W}, Q = \frac{Δ T}{R} = 9.6 \frac{W}{m ^{2}}

Reading this result: The insulation layer carries the most thermal resistance, so the temperature falls most steeply across it. A total R-value of 2.71 m²K/W lets 9.6 W/m² flow for this 26°C difference.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

↓

Carbon Footprint

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Carbon FootprintLive

your annual CO₂ in tonnes

8.7

tonnes CO₂ per year

Electricity

1.9 t

Driving

2.3 t

Flights

2.0 t

Diet

2.5 t

Controls

Presets

Electricity (kWh/month)

Driving (km/year)

Flights (short-haul/yr)

Diet

Your carbon footprint is the sum of the greenhouse gases your lifestyle emits each year. The big levers are usually flying, driving, home energy, and diet. The global average is about 4.7 tonnes per person, but a livable-planet target is closer to 2 tonnes. Estimates use typical emission factors and will vary by region.

▶ Run in Python

Data Inspector

Total footprint8.7 t CO₂/yr

vs global avg1.8×

vs 2t target4.3× over

Governing equation

E_{t o t a l} = i \sum a_{i} f_{i} = 1.9 + 2.3 + 2.0 + 2.5 = 8.7 t CO_{2} /yr

Reading this result: Diet is your single biggest slice at 2.5 t of the 8.7 t total, so that is where a cut moves the needle most — one long-haul flight can outweigh a whole year of driving.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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Also for:Students Researchers Engineers Hobbyists & Makers K-12 Students First Responders General version →

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Frequently asked questions

Is this good for educators?: Yes — this version of "Insulation Optimizer for a net-zero home" is framed for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.