HomeHealth Information & ToolsMyHealth VideosHealth Care Locator Health A-ZHealthy LivingTests & TreatmentsMedicationsFind Health CareHealth AlertsPatient Care Handouts Last Revised: October 8, 2015 Author: Environmental Public Health, Alberta Health Services Help Me Choose the Right Air PurifierKitchens Exhaust fans (AKA blowers or blower packages) are the last link in the total exhaust package. The fan draws the air into the hood, through the grease duct, through the air purifier (if present), and discharges the air out of the building to the outdoors. Kitchen Exhaust is always discharged outdoors; it is never recycled back into the building.In properly configured Kitchen Exhaust applications the exhaust fan is always placed downstream from the hood, precipitator, and the odor module. Configuring the system this way creates negative pressure inside the purification equipment and prevents polluted air from escaping through cabinet penetrations (access doors etc.).

It also prevents the fan from loading with particulate. In other words you want to pull the air through the system, not push it.Fans for Kitchen Exhaust need to be rated for handling grease laden air. Appropriate fans will have a UL 762 approval and listing. The main determining factors in fan selection are CFM need, total system static pressure, noise volume and discharge preference. There are two main types of fans used in Kitchen Exhaust applications.Grease in a Commercial Kitchen Exhaust duct is highly flammable. Because of this danger commercial kitchens are required to have automatic fire suppression systems. In the USA Fire Suppression systems are governed by the codes under the National Fire Protection Agency (NFPA). Fire Suppression Systems use a combination of dry chemicals and/or wet agents to suppress fires. Suppression systems help control damage and loss to equipment and buildings. Common means of detection are through heat sensors, wiring, or manual detection (depending on system selection).

The hoods, ducts and air purification equipment are equipped with piped nozzles that carry fire suppressant to the various components of Kitchen Exhaust system to extinguish fires should they occur. air blower for cleaning dustThese systems work in conjunction with the exhaust fan and when the systems are designed and installed this is an important consideration. what is the best air cleaner for harleyIn general when the system detects a fire the precipitator should shut down but the exhaust fan should still run. 11 inch chrome air cleanerThis is to allow the system to evacuate the heat and smoke from the fire as the chemical agents take care of the flames without interference from the precipitators.All kitchen fire suppression systems manufactured after 1994 must comply with the UL300 standard to account for increased commercial cooking times and temperatures.

Dry chemical kitchen systems have been replaced with wet systems to accommodate hotter and longer cooking times.Some manufacturers pre-pipe their filtration units with nozzles so that during installation the fire protection company need simply hook up to these with their lines carrying the suppression agents. Air Quality Engineering does not pre-pipe for fire suppression. Local codes and ordinances along with NFPA rules are subject to change. Our preference is to have local fire suppression experts install the nozzles where local codes require them.There needs to be a system in place to replace the large amount of air evacuated by the average Kitchen Exhaust duct system. That is where the aptly named Make-Up air system comes in. This system brings in outdoor air to replace the air that is lost up and out of the building through the exhaust system.If this air is not replaced at the same rate that it is expelled, the building will experience a negative pressure situation (the air pressure outside the building is greater than the air pressure inside the building).

Some of the most common indicators of a negative pressure problem include the suction pressure that makes exterior doors difficult to open, exhaust fans that don’t work properly, drafts around doors and windows, poor indoor air quality, and infiltration of outdoor air. These problems are more pronounced during the cold season when windows are kept closed, reducing the natural pressure-balancing effect.A make-up air system maintains the proper balance between inside and outside air pressures while also providing many other benefits:The make-up air unit consists of a blower (fan) that takes in fresh air and passes it through a bank of filters to remove dust and other contaminants. The amount of fresh air brought in is regulated by the dampers in the damper assembly. An actuator opens the dampers to varying degrees depending on how much fresh air is needed at the time. In a heating application the passing air is then efficiently heated by a direct-fired gas burner. The heated air is then either blown directly into a building space or it can be ducted to target locations inside a building via the air distribution system.

Go to previous page | Go to beginning of articleSeeing your home and precious possessions consumed by fire can be one of the most severe losses that a homeowner can experience. such a devastating loss, reassurance comes from having clear guidance and support in salvaging as much as possible from fire and smoke damage. ServiceMaster Restore®, our technicians are more than talented professionals; they're caring people ready to get you back in your home as quickly as possible, while keeping you informed every step of the way. What are the common types of fires that can occur? Fire damage goes beyond burning items Not all fire damage is the same. Our fire restoration process is thorough and proven. Remediating water damage (if any) Removing contents from the home, including: Collecting immediate items you may need for the next seven days such as clothing, prescriptions, toys, school books, business needs, etc Packing out the remaining contents for cleaning and storage

Performing structural restoration, including: Removing any charred contents that may seal in smoke such as insulation and burned wood Evaluating carpets and floor coverings that may need to be removed Inspecting the framing of the house and subfloors for safety Treating affected surfaces for smoke odors and sealing to keep any leftover odors from leaking back into the house With ServiceMaster Restore, you benefit from more than 60 years of home fire restoration expertise and ongoing guidance throughout the Quick response and action are critical. The more time that elapses before treatment, the greater the damage. For more than 60 years, we have come through for homeowners as a highly reputable, licensed, insured and endorsed provider of fire and smoke Our methods and processes meet or exceed industry standards. IICRC TRAINED RESTORATION TECHNICIANS Our experts have completed advanced training in fire mitigation, restoration and corrosion control.

We also require Continuing Education to learn about new techniques and equipment to better serve you in your time of need. We understand that as the property owner, you deserve clear and thorough communication, and we will give our full cooperation to both you and your Don't try to do it yourself! The residue left behind after a fire is a biohazard and can cause health problems if it is not taken care of correctly and thoroughly. You do not want to attempt to clean up your home on your own after a fire or you may cause more damage. Only experts with the right training and tools can assure the job is Did you know that smoke continues to destroy your home and its contents even after the fire is out? Smoke that has coated or penetrated surfaces continues to affect the chemical composition of fabrics, metals, walls, ceilings and even tiles. us to handle every aspect of the smoke and soot removal as well as restore areas damaged by fire. What to do if you're in the middle of a loss

Corrosive by-products can cause irreversible etching in as few as 72 hours. Call for professional help If the temperature is above 60 degrees, air out the house to reduce smoke odor. Clean laminate surfaces as well as chrome, porcelain and aluminum fixtures to prevent permanent tarnishing or etching. Change the air filter on your furnace if it uses forced hot air. Tape damp cheesecloth over returns and supply registers to capture loose soot in the air. Discard any open food packages. If the electricity is off, clean out the refrigerator and leave doors propped open. Send clothing with heavy smoke damage to a qualified restoration dry cleaner. What not to do Do not touch anything with your bare hands. Oil from your hands can permeate upholstery, walls and woodwork, causing additional damage. Do not wash walls. Incorrect cleaning could compound the soot residue. Do not attempt to clean carpets or upholstered furniture. Do not use electrical appliances until having them checked.