Tiny House GuideBack to Kitchen

Ventilation

This is whole-room airflow — separate from the rangehood over your cooktop. In a small, sealed space moisture has nowhere to go, so good ventilation is your main defence against condensation and mould. Pricing is shown per country; regions marked "being researched" are coming soon.

Tiny house kitchen ventilation and airflow

Ventilation options

Opening Window (cross-ventilation)

The simplest, cheapest ventilation: an opening window by the kitchen. Pair it with another opening on the opposite side and you get cross-flow that clears steam and heat fast.

Advantages

  • Free to run, no power
  • Best results with a second opening (cross-flow)
  • Natural light too
  • No moving parts to fail

Disadvantages

  • Weather dependent
  • Security when open
  • Not enough on its own for heavy cooking

Indicative pricing

🇦🇺 AustraliaCost of the window (varies)
🇺🇸 USABeing researched
🇨🇦 CanadaBeing researched
🇬🇧 UKBeing researched
🇪🇺 EuropeBeing researched

Roof Vent / Openable Skylight

Hot, moist air rises — so a roof vent or openable skylight lets it escape at the highest point. A caravan-style roof hatch is purpose-built for a tiny home on wheels.

Advantages

  • Releases rising hot/moist air
  • Adds light (skylight versions)
  • Caravan hatches suit a THOW
  • Works with a window for through-flow

Disadvantages

  • A roof penetration to flash and seal
  • Powered versions draw a little power
  • Install care needed for leaks

Indicative pricing

🇦🇺 AustraliaWhirlybird/hatch ~$150 – $400 · powered/solar higher
🇺🇸 USABeing researched
🇨🇦 CanadaBeing researched
🇬🇧 UKBeing researched
🇪🇺 EuropeBeing researched

Extraction Fan (electric / 12V / solar)

A wall or ceiling fan that actively pushes stale, moist air outside. Mains, 12V or even a small solar/USB fan — sized to the space (kitchens need around 50 L/s extraction).

Advantages

  • Active airflow, not weather-dependent
  • 12V/solar options for off-grid
  • Clears moisture fast
  • Cheap basic units (~$60+)

Disadvantages

  • Needs power and a vent to outside
  • Wiring by an electrician
  • Some noise

Indicative pricing

🇦🇺 AustraliaUnit from ~$60 · installed $200 – $1,500
🇺🇸 USABeing researched
🇨🇦 CanadaBeing researched
🇬🇧 UKBeing researched
🇪🇺 EuropeBeing researched

Heat-Recovery Ventilator (HRV/ERV)

A small unit that exhausts stale air while recovering most of its heat into the incoming fresh air. A premium, energy-efficient option for a well-sealed tiny home.

Advantages

  • Constant fresh air with little heat loss
  • Great for tightly-sealed homes
  • Strong condensation control

Disadvantages

  • Expensive and more complex
  • Runs 24/7 (small constant power)
  • Overkill for a simple build

Indicative pricing

🇦🇺 AustraliaSingle-room units $600 – $2,000+
🇺🇸 USABeing researched
🇨🇦 CanadaBeing researched
🇬🇧 UKBeing researched
🇪🇺 EuropeBeing researched
Cross-flow is your friend. The cheapest, most effective ventilation is two openings on opposite sides of the home, so air flows through. Add a roof vent for rising hot air and a rangehood over the cooktop, and a tiny kitchen stays dry and fresh.
Pricing & note: figures are indicative 2026 estimates in Australian dollars and exclude most installation. New homes must manage condensation under NCC 2022; powered fans and roof penetrations should be installed and sealed by qualified trades. Regions marked "being researched" will be added soon. Last updated: June 2026.