Welcome to L Seven N Company Inc, Ventilation Cleaning Specialists! L Seven N Company Inc, Ventilation Cleaning Specialists has been servicing the Santee area since 1986. We are HVAC contractors that specialize in maintenance for commercial and exhaust hoods, air ducts, mold, chimneys, dryer vents for residential and commercial locations, and much more. L Seven N Company Inc, Ventilation Cleaning Specialists is a family-owned company that is associated with the BBB, NADCA, and Blue Book. We do offer 10% off for residential work if you mention our website and free estimates for commercial projects. We have an excellent staff that is here to answer any questions you have, so give us a call today!