At Johnson Controls, our Self-Contained AC Units feature high mechanical and architectural flexibility with both horizontal and vertical configurations. From Air-Cooled Units that eliminate the need for a cooling tower to Water-Cooled Air Conditioners that help save energy by conditioning air with a waterside economizer, our Self-Contained Units offer individualized control that is ideal for individual tenant metering. Our higher capacity Water-Cooled Units provide high efficiency performance – helping you lower your energy costs all while enjoying the quiet operation of low-noise fans. Mechanical Flexibility - Available in both horizontal and vertical configurations; drive components can be upsized for applications with higher external static-pressure requirements Architectural Flexibility - Eliminates the need for a cooling tower or building penetrations needed for air-cooled units Individualized Control - Ideal for applications requiring individual tenant control and/or metering

Save Energy - Air-condition without compressors when outside air is cool by using an airside economizer or when tower water is cool by using a waterside economizer Easy Installation, Reduced Floorspace  - Compact dimensions and knock-down capability allow doorway, hallway, and elevator accessindoor ac unit Excellent Indoor Air Qualityhow to calculate ac unit capacity ADP is the perfect match for your heating and air conditioning systems. best central air conditioning pricesSince 1992, Advanced Distributor Products (ADP) has been a leading manufacturer of high-quality indoor HVAC equipment. ADP is now the #1 producer of residential evaporator coils in the USA. ADP strives to form long-term partnerships with our distributors.

We offer a variety of solutions designed to meet your unique indoor HVAC equipment needs. In addition to evaporator coils, ADP also manufactures compact and efficient residential air handlers and low profile unit heaters. With consistently short lead-times and advanced technical capabilities, we make it easy for you to do business with ADP. ADP evaporator coils are designed to match perfectly with any HVAC system. They offer a professional appearance, perfect furnace fits and enhanced features for fast installations and easy serviceability. ADP provides low height solutions for tight spaces and a broad product offering to reach higher SEER levels at a lower cost. ADP evaporator coils provide an upgrade over standard system matched coils by offering superior quality, improved energy efficiency and enhanced protection for the air in your home. ADP is the exclusive manufacturer of indoor cooling equipment featuring Microban® antimicrobial product protection. Microban® antimicrobial technology works to continuously inhibit the growth of mold for added protection that lasts the lifetime of your system.

Click above to learn how ADP can be the perfect match for you… HE Series multi-position coils are the perfect solution for low height applications. These coils offer perfect furnace fit, space saving opportunities, and are available in multiple heights and widths. All Healthy Solutions™ coils feature Microban® antimicrobial in the drain pan, providing added protection against mold and mildew. PL Series Healthy Solutions® Premier Plenum Coils match perfectly with your system and provide an upgrade over standard matched plenum coils. Introducing S Series Wall Mount Air Handlers by ADP. S Series Wall Mounts are compact and lightweight solutions for multi-family housing applications Introducing B Series Multi-Position Air Handlers by ADP. Flexible options including electric and hot water heat, standard and variable-speed motors make this ideal choice for many residential applications. Introducing the FOA & FSA Series by ADP. These compact unit heaters provide solutions for all of your residential and light commercial heating needs.

Introducing F Series Healthy Solutions® Premier Multi-Position Air Handlers by ADP. F Series air handlers are compact, efficient solutions that are perfect for single or multi-family applications. M Series manufactured housing evaporator coils match perfectly with your system, providing an upgrade over standard manufactured housing coils. ADP’s HD Series is the perfect solution for homes with furnaces installed in crawl spaces. HD Series coils are low height and feature side refrigerant connections for easy access. Introducing the SEP & HED Series by ADP. These large commercial unit heaters are the perfect solution for heating warehouse and garage spaces. ADP LA/LH Series coils are large vertical coils and horizontal slab coils designed for high tonnage applications (6-10 tons). V Series dedicated horizontal coils are the perfect solutions for attics spaces. V Series coils are low height and feature top refrigerant connections for easy access. Introducing MX Series compact modular blowers by ADP.

These compact modular units, with electric and hot water heat options, match perfectly with your system and allow for a flexible “one-man-job”.HVAC blower fan testing & diagnosis guide: This article discusses how to inspect and test a heating or air conditioning indoor air handler blower fan that is not working. We also discuss convector unit fans and we suggest diagnostic steps for squirrel cage blower fan squeaks and noises. Our page top photo shows an air handler unit located in a building's attic - we removed the cover to show the blower fan assembly just to the left of the red tag) in this image of a Lennox™ horizontal HVAC system. [Click to enlarge any image] The blower fan is located inside a horizontal air conditioning unit in many home air conditioning systems, especially when the air handler is located in an attic or crawl area. The location of a blower fan in vertical "up flow" or "down flow" heating and cooling systems is illustrated in additional sketches and photographs below.

Initial, simple diagnostic checks of the air handler system are also described at DUCT SYSTEM & DUCT DEFECTS: Basic checks of the indoor air handler (blower), air ducts, and filter systems. My issue is about an air conditioner fan that just won't start. The fan motor is not seized, and we had a recent blower motor starting capacitor change. The blower fan relay appears to pull in okay, the electrical connections reseated and tight. But the cooling fan will still not start. This is an early 1990's York home air conditioning unit. Our photo (left), shows a modern blower assembly inside of an air handler. In this case the blower is a direct-drive unit - the electric motor that drives the air conditioner blower fan is mounted inside of and at the center of the blower assembly itself. Other HVAC blower units may mount the motor separately from the squirrel cage fan, connecting the motor to the fan using a set of pulleys and a fan belt. For completeness we have listed some blower fan diagnostic steps that you have already tried, as well as additional things to check.

The blower assembly is the green component in this illustration from Carson Dunlop Associates The Illustrated Home. Thanks to reader Randy Shaffer for suggesting this topic. Wall convectors are often used for both heating and cooling in commercial installations and high-rise apartment buildings. The unit shown has its own compressor mounted right in the cabinet, visible at lower center in Wall-mounted heating and cooling convector installations may be designed with one central heater or cooling system which feeds multiple units with chilled or heated water or possibly refrigerant from a single remote heating and cooling heat pump. Our photo (left) illustrates dual squirrel cage blower fans typically found in the bottom of a fan/convector heating or cooling unit such as this one found in a New York City apartment. If the convector fan motors run and the squirrel cage fans spin but not enough air is coming out of your convector unit, turn off power and take a closer look at the fan blades themselves - you may need a flashlight and a mirror to make this check without disassembling the unit further than shown here (we removed the convector unit cover).

Watch out: Dirt on the squirrel cage blower fan blades can significantly reduce airflow through the unit. We have seen a 40 to 50% improvement in air flow simply by cleaning this blower fan assembly, yet it's something people rarely check.Because even a small amount of dirt in the cupped fan blade edges reduces airflow significantly, but it's not visually obvious. You have to look carefully at the fan assembly. In our wall convector unit above you'd use a good flashlight and a mirror to inspect the blower assembly fan blades. Also check the cooling or heating coil fins for blockage by dust and debris - a more common source of air flow blockage at heating and cooling convector units like the one shown. Our photo (above left) illustrates a condensate handling problem in the cooling convector unit for the same apartment unit introduced above. Air conditioning condensate was leaking inside of the convector unit due to a clogged condensate drain line. The condensate leak exited the bottom of the convector, ran through a raised floor cavity, entered apartment building walls, and ran around the wall interiors in a metal stud-framed wall sill plate where it led to major toxic mold contamination over a wide area, floor damage, and the need for costly cleanup and repair work.

Details about wall convectors used for heating or cooling and about convector blower fans are found at WALL CONVECTORS HVAC and at FAN CONVECTOR HEATERS - HYDRONIC COILS Also see CONDENSATE HANDLING, A/C for more about air conditioner or heat pump condensate drainage handling. In our simple air conditioning (or heat pump) system sketch shown at left, the light blue fan shown at left in the sketch (above the red compressor box) is the outdoor compressor/condenser fan discussed at FAN, COMPRESSOR / CONDENSER UNIT. The dark blue fan shown at right in the sketch is the indoor air handler or blower compartment or cooling coil fan found inside the building. This fan blows building air across the evaporator coil (or cooling coil) to cool and dehumidify indoor building air. We discuss this indoor fan at FAN, AIR HANDLER BLOWER UNIT. In a warm air heating system that does not include air conditioning as well, the indoor fan is still located in the indoor air handler and is discussed

Question: What do I do about a squeaking, squalling squirrel cage? It doesn't do it every time the A/C comes on but more frequently than not. Not alot of room to see in there. The squirrel cage fan to which Erma refers is found inside the indoor air handler unit. This fan moves building air through the duct system and across heating and/or cooling elements to condition the air as it is then supplied to the building through supply ducts and registers. In an air conditioning system this is the dark blue fan shown in the right side of our sketch above. For combined heating/cooling systems the same fan assembly can blow heated air into the building and an additional FAN LIMIT SWITCH will be found inside the furnace cabinet. More about HVAC blower fans including squirrel cage fans is in this article, above beginning at BLOWER FAN OPERATION & TESTING but to start addressing a squeaky blower fan, note that your fan may be repairable by tightening one or more allen screws that secure the fan cage assembly (or the bearings that carry the fan) to its housing through which passes the fan motor drive shaft.

With power OFF for safety, if the fan and all components appear to have no loose screws or mounts, but you can still wiggle the fan from side to side, then the bearings are worn and need replacement. If your fan is pulley-driven, check also that the pulley is secure on the shaft and that the fan belt is not so loose as to be squeaking. I would not use WD40 on or near electric motor parts nor on greased bearings as it's not intended for a motor or bearing lubricant, though to be honest, I've sprayed WD40 on almost every problem that has ever arisen at one time or another. Better would be a lubricant intended for motors and motor shafts. Some HVAC blower fan assemblies use a grease fitting not oil. In that case your service tech may need to re-pack the bearing with grease; often on older units there is a grease cap over the fitting that, if tightened, forces more grease into the bearing, so if you see one of those, try first giving the cap a turn. At NOISY AIR CONDITIONER / HEAT PUMP and at NOISE CONTROL for HEATING SYSTEMS we discuss a range of noises can be traced to air conditioning and heating systems.