Preformed seasonal safety check on a single 2024 gas system. I tested all electrical components and safeties. All tested within manufacturer specifications. Overall the system was fairly clean. Client does need a filter change at this time. 20x25x4. I proceeded to the outside unit where I visually inspected the unit. I noticed the unit to not have any type of surge protection on it. Unit was heating upon departure. VIP Annual Service Agreement - 1 Unit Fall & Spring Annual Maintenance Visits 10% Discount on Repairs Discounted $45 Travel Fee (Usually $79!) Preferred Customer, (top placement in our emergency list)