# Matanzas Kitchen Service — Thermador appliance repair, St. Augustine FL — (904) 442-8210 > Independent Thermador Service. Booking by telephone on (904) 442-8210. Independent: not affiliated with, authorized by, or endorsed by Thermador. ## Thermador Ventilation and Hood Repair Page: https://thermadorrepairstaugustine.com/service/ventilation/ Hoods, internal and remote blowers, and downdraft systems. Most weak-extraction calls are duct, damper or make-up air problems rather than a failed motor. Appliance family: ventilation ### Symptoms that bring us out - Hood runs at full speed but pulls very little air - Blower rumbles, whines or vibrates the cabinetry - Downdraft rises part-way and stops or will not retract - Rooftop or wall damper flaps and bangs in the wind - Hood lights work but the fan does nothing - Controls respond intermittently or not at all - Grease reaches the ceiling above the cooking surface ### Scope of the work - Blower motor and wheel replacement, internal and remote - Damper, transition and duct-run inspection - Downdraft lift mechanism and limit switch repair - Control board, keypad and light circuit replacement - Baffle filter, housing and mounting repairs ### Detail Ventilation is the category where the appliance is usually working and the system around it is not. Before we condemn a blower, we look at the whole path the air has to take, because a motor rated for a great deal of air will still move almost none of it through a crushed transition or a damper that no longer opens. ## Weak extraction with a healthy motor Four things account for most of it. Duct that necks down from a large round outlet to a smaller rectangular run loses far more than the size difference suggests. Flexible duct with sags in it behaves like a series of traps. Grease that has built up on a blower wheel unbalances it and destroys its ability to throw air, which is why a wheel that looks merely dirty can cost you half the system's output. And a wall or roof cap whose damper only lifts an inch will choke everything upstream of it. We check the damper first because it is free to check and because on the coast it is the part most likely to have failed. Salt air seizes the hinge pins on exterior caps, and a flap that used to swing now lifts a little and drops back against the airflow. In houses within sight of the water we also see the opposite complaint: a damper corroded into the open position, which lets humid outside air and insects straight back down the duct. ## Remote blowers on the coast A remote or in-line blower mounted in an attic or on a roof solves a noise problem and creates an exposure problem. That housing sits in salt-laden air year round, and the motor's bearings and the wheel's balance weights are the first casualties. The symptom people describe is a rumble that gets worse over a season, or a vibration that carries through the cabinetry into the room. By then the wheel usually needs replacing along with the motor. ## Make-up air and the tight-house problem Newer construction in the county is built far tighter than a 1930s bungalow. When a high-capacity blower runs in a sealed house, the air it removes has to come back in from somewhere, and if there is no dedicated make-up air path it comes back down whatever opening is easiest — often the ventilation the house was not designed to reverse. The symptoms are a hood that clearly underperforms its rating, a back-draft smell, and doors that pull hard. That is not a repair in the usual sense; it is a diagnosis. Where a make-up air damper exists and has stopped opening, we can fix that. Where none was installed, we will tell you plainly rather than sell you a blower that will not change anything. ## Downdraft systems Downdraft units add a lift mechanism to everything above. The common faults are a drive belt or gear that has slipped, a limit switch that no longer confirms the top of travel, and a unit that stops part-way because grease has stiffened the guides. Cleaning and re-lubricating the travel path solves a fair number of these outright. The rest are a motor or switch replacement, quoted before the part is ordered. ## What we bring back Extraction you can feel at the front edge of the cooking surface, a blower that runs without telling the whole house about it, and a damper that opens fully and closes fully. Written estimate first, flat diagnostic credited to the repair, and the same parts and labor warranty as the rest of the kitchen. Warranty on this work: 90 days on labor, 365 days on parts, genuine OEM parts only. --- Source page: https://thermadorrepairstaugustine.com/service/ventilation/ Phone: (904) 442-8210 · Hours: Monday to Friday 8:00am – 6:00pm; Saturday 9:00am – 4:00pm. Closed Sunday. Scheduled appointments only — we do not run an after-hours line. Area: St. Augustine, FL and St. Johns County, about 40 miles out. Matanzas Kitchen Service is an independent appliance repair company. We are not affiliated with, authorized by, or endorsed by Thermador or its parent company. All brand names and model numbers are the property of their respective owners and are used only to identify the appliances we service.