David McHugh of ProAir chats through your ventilation options and answers commonly asked questions about mechanical ventilation with heat recovery, including: - Why you need ventilation - What are the requirements - Why you need to sort out which ventilation system you choose early on in the building/renovating process - What are the different types of mechanical ventilation systems available in Ireland, with pros/cons - What are the performance criteria for mechanical ventilation with heat recovery? What do self-builders need to check for when buying? - Difference between teed and manifold systems - What is the process of getting a system installed? From design to commissioning. What do self-builders need to look out for? - Maintenance tips and advice