A cost-effective ventilation system with heat recovery is one which gives a good return on investment. It should provide energy savings which recoup the cost of installation and recurring operating costs. This type of system may utilize less expensive methods of heat recovery or have a more streamlined design without significantly affecting performance. Cost effective ventilation systems with heat recovery are in high demand among property owners who wish to increase energy efficiency without a significant upfront cost. They can be suitable for new construction as well as retrofit projects.