Ventilating your home is critical. There are a number of different ventilation systems available on the market. Ventilation systems will help reduce condensation. This will make your home dryer and therefore warmer and healthier. Call Oxygen Air if you would like information on Aspen Home Ventilation. The only ventilation brand with a massive 7-year warranty. Aspen specialises in Positive and Balanced Pressure Ventilation Systems. Both Aspen ventilation systems ensure the air you breathe is clean, filtered air because of extensive filtering.