What Causes Facet Syndrome? Facet syndrome is generally the result of the natural aging process. However, the initial cause of arthritis, or facet syndrome, may also be an injury or overuse of the joints in youth. Another possible cause of facet disease is spondylolisthesis, which is when one vertebra â usually in the lumbar spine â slips forward over the lower vertebrae. When the facet joints become inflamed due to injury or age, the result is stiffness and pain.
An energy recovery ventilator (ERV) is a type of mechanical equipment that features a heat exchanger combined with a ventilation system for providing controlled ventilation into a building.
HRV and ERV-Why choose a ERV (Energy Recovery Ventilator). An energy recovery ventilator system (ERV) fits in colder climates, in the homes where there is no excess moisture in heating season, as well as for homes located in warmer climates where the outside humidity level is high.s for the HRV system, the ERV system recovers heat; however, it also recuperates the energy trapped in moisture, which greatly improves the overall recovery efficiency. In air conditioned homes, when it is more humid outside than inside, the ERV system limits the amount of moisture coming into your home.