Ventilation works with heating and insulation to make a warmer, drier and healthier home. 

Daily checklist

  • Open doors and windows. Give it 10-15 minutes each day – morning is the best time.
  • Leave a bedroom window open at night. This helps to remove moisture and discourage mould – just a finger’s width is enough in winter. Use a security latch for peace of mind.
  • Air out when you turn off the heater. Releasing the heat before you leave the room helps to avoid condensation.
  • Use extractor fans and rangehoods. Make sure they’re big enough to do the job, regularly cleaned and send air to the outside, not your ceiling space.

More about reducing dampness

Ventilation systems

A home ventilation system is an alternative to opening doors and windows.

If damp is your main worry, find and fix the source before investing in a home ventilation system. For warmth, invest in insulation and effective heating first.

Consumer NZ buying guide(external link)

Need some healthy home advice?

Eco Design Advisors provide free and independent advice on how to make your new or existing home warmer, drier and healthier. They can chat over the phone or visit your place. It's paid for by local councils, so get in touch if you live in Auckland, Christchurch, Lower Hutt, Invercargill, Nelson or Palmerston North.

Or, a certified Home Performance Advisor can visit and assess your home, and tailor an improvement plan.