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.
What an HRV System Will and Will Not do. An HRV is a controlled ventilation system that recovers and recycles energy from an Exhaust Air Stream. In winter the HRV recovers heated energy, and in Summer, if your home is air conditioned, the HRV recovers cooled energy. In simple terms, here is what the HRV can and cannot do â¦â¦.