Table of Contents
How do I choose an air handler unit?
5 Important Things to Consider When Choosing an Air Handler
- #1) Speed. Air handlers are available in different speeds.
- #2) Size. You should also consider the size when choosing an air handler.
- #3) Furnace and AC.
- #4) SEER.
- #5) Warranty.
What are the types of AHU?
There are basically two types of air handling unit that are in used and they are the “Draw-Through” or “Blow-Through”. In the Draw-Through type, the fan pulls the air through the mixing box, filters and cooling coil before discharging it from the fan outlet to the space to be conditioned or to the ducting network.
What is CFM in air handling unit?
The capacity of an air handler is most commonly measured by the amount of air it conditions and distributes. This measurement is calculated in volumetric units known as CFM (cubic feet per minute).
What size air handler do I need?
Size your air handler. Size your air handler unit based on the size of your air condenser unit. If your air condenser unit needs to be four tons so must your air handler. You can put a larger air handler by one ton more, but for optimal performance they should match.
How much is an air handler cost?
Cost to Replace an Air Handler
| New Air Handler | $700 – $1,500 |
|---|---|
| Installation | $1,200 – $1,800 |
| Remove/Dispose of Old Unit | $300 – $500 |
| Total | $2,200 – $3,800 |
Which blower is used in Ahu?
Blower/fan Air handlers typically employ a large squirrel cage blower driven by an AC induction electric motor to move the air. The blower may operate at a single speed, offer a variety of set speeds, or be driven by a variable-frequency drive to allow a wide range of air flow rates.
How much does an air handler cost?
An air handler costs $500 to $3,500, with most homeowners paying $700 to $1,500. This does not include installation, which averages $1,500 and ranges $200 to $2,100. Air handlers connect to an air conditioner or heat pump to provide cooled or heated air for an indoor space.
How do I calculate CFM for air handler?
The calculation for CFM involves dividing the total volume of the space by the air exchange interval. To calculate room volume, you measure its length, width and height in feet and multiply these. Dividing this number by the change rate gives the required airflow in CFM.
How much CFM do I need?
How do you calculate CFM for a range hood? Determine the volume of your kitchen. Multiply that number by 15, the standard number of times a range hood should exchange all the air in your kitchen per hour. Divide that number by 60 to get the minimum cubic feet per minute for your hood.
How do I use the Ahu selection worksheet?
The AHU Selection Worksheet uses parameters such as sensible load, latent load and total load to provide the remaining variables needed to select and specify air handling units. This tool can be used for small single zone fan coil units and split systems up to large, industrial-type air conditioning systems.
What is the difference between an ahu and a simple air conditioner?
To keep the coils from getting dirty too quickly, a simple filter is also included. They generally have simple controls and serve a single temperature zone. While they have their applications, they are typically less efficient than larger AHUs and have difficulty providing tight temperature and humidity control.
How to select the right fan for your project?
A critical part of any fan selection is acoustic performance. It’s always important to know the maximum acceptable noise level on a project. Proper selection and specifying of fans and AHU casing can reduce the need for silencers and other costly noise mitigation techniques.
What is a large variable air volume (VAV) air handler?
They often serve single temperature zones, but large variable air volume (VAV) AHUs serving multiple terminal boxes (zones) are available. Because of their compactness and lower initial costs, packaged units have a reputation for being inefficient and maintenance intensive, but performance and reliability are improving.