Uncased coils are installed into existing furnace-matched coil casings to ensure the right match for increased performance.This is a list of common HVAC components in commercial buildings. You probably know that you have an HVAC system for your facility, but you might not know what all of the components do. Here is a list of the most common HVAC elements found in a commercial building and how they work together to keep your building at its ideal temperature. An air conditioner is designed to dehumidify and remove heat from an area. The cooling is done using a simple refrigeration cycle. A condenser is a component of the basic refrigeration cycle that removes heat from the system. The condenser is the hot side of an air conditioner. Condensers are heat exchangers that can transfer heat to air or heat to fluid (such as water or glycol) to carry the heat away. An air handler, or air handling unit (often called an AHU), is used to condition and circulate air as part of an HVAC system.

An air handler usually contains a blower, heating or cooling elements, filter racks or chambers, sound attenuators, and dampers. Air handlers usually connect to ductwork that distribute the conditioned air through the building and return it to the AHU. Small air handlers are called terminal units, and may only include an air filter, coil, and blower. These smaller units are also called blower coils or fan coil units. A larger air handler that conditions 100% outside air, and no re-circulated air, is known as a makeup air unit (MAU). An air handler designed for outdoor use, typically on roofs, is known as a rooftop unit (RTU). A chiller removes heat from a liquid through a vapor-compression or absorption refrigeration cycle. This cooled liquid flows through pipes in a building and passes through coils in air handlers, fan-coil units, or other systems, cooling and usually dehumidifying the air in the building. There are two types of chillers – air-cooled or water-cooled. Air-cooled chillers are usually outside and consist of condenser coils cooled by fan-driven air.

Water-cooled chiller are usually inside a building, and heat from these chillers is carried by re-circulating water to a heat sink such as an outdoor cooling tower. Now that you know the difference between these components, do you remember when the last time was that you had them tuned up? Be sure to perform regular facility HVAC maintenance to keep your system running at its peak. Facility Services Newsletter – Receive maintenance tips, business updates, and our quarterly cocktail. Emerald City Inspections, LLC Need a home inspection in Iowa? listing of Iowa certified home inspectors. Re: Mismatched HVAC equipment Mismatched Manufacturers is not recommended but may not be wrong. The indoor unit has a coil number. it must be compatible with outdoor unit. I do this all the time for Energy Audits and HERS Ratings. But it would seem to be beyond SOP for a Home Inspection. Would you note different manufacturers and recommend assessment by a licensed HVAC contractor?

I agree that checking the compatibility is beyond the SOP, but that it probably should be montioned, especially if manufacturing dates are more than about a year apart; but given that a lot of home sales are forclosures these days and are being sold "as-is", I'm not sure it will help the buyer much. Generally they will not spend the money to make it right.how to strip an ac unit for copper Professional Certified Master Inspector In Edwardsville, Glen Carbon, Godfrey, Maryville,20 ton cooling unit Fairview Heights, O'Fallon and surrounding areas of Illinois Metro-Eastair conditioning unit ducted My standard report format is to list the manufacturer of the HVAC components and the age of each. The client will be able to see if they are mismatched if they bother to read the report.

But otherwise, I don't mention it. Originally Posted by jfunderburk That's the way I currently report as well. However, I doubt most clients would grasp the significance of mismatched brands / dates, so I usually explain that in general and leave it at that if that situation arises. Originally Posted by fnewman Help me understand the significance of mismatched brands. I have been going with a hvac friend of mine, when I can, for the last 6 months to learn more about hvac. Many times we replace just one component and they are a different brand. He gets the system info to the distributor and they match the component and he usually has several options on manufacturers. Don't understand why it would matter as long as it matches the system. As someone mentioned in an earlier post, mismatched brands may not be incorrect if both pieces have been approved for use together by the manufacturers. HVAC technicians have resources for that info, but HIs generally do not. If pieces are improperly matched, they may not operate properly and may have poor energy performance.

So the delimina for a HI is whether what they are seeing is properly matched or just the result of sloppy work or an effort to get a system back in operation cheaply. This is especially likely when the manufacturing dates are many years apart. This is from NACHI continuing ed (energy auditing). If the homeowner is replacing an older or failed split system, they should be sure that the evaporator coil is replaced with a new one that exactly matches the condenser coil in the new condensing unit. The air conditioner's efficiency will likely not improve if the existing evaporator coil is left in place; in fact, the old coil could cause the new compressor to fail prematurely. Thanks David, good info. Need to find the time to get to the new energy auditing course. Sounds like it has good information I could use. #44  of 67 brands of central air conditioners Read more about Bryant central air conditioners 561C Evolution Legacy Line Preferred Location: San Francisco, CA

Bryant is an absolute piece of junk. It stopped working within 2 years. company who installed it was so unwilling to diagnose and repair it. be saying something about the quality of Bryant. Now I can concur with the bad reviews here about theBesides a costly repair, the refrigerant leaks so fast and I wonder how much Bryant is damaging the environment. the junk but it is so costly to repair. One can probably run a good repair business just servicing and replacing bad Bryant units. Had this installed 3 years ago. Repair guy has been out twice, and still so loud it keeps us up at night. "Bad coil - typical with Bryant" Expensive to get a defective Bryant product replaced. installed with a new AC unit less than a year ago. defective and leaked, causing the AC not to perform effectively. warranty covered the replacement coil, but not the $900 repair cost (once service company quoted $1200 to replace). indicated these problems are typical in the Bryant unit.

to voice our concern and they have heard it one too many times andFirst I am disappointed that Cool Now, knowing these units have defective parts, would recommend and sell them to their customers. And foremost, why has Bryant not rectified this problem? documented as a repeating defective part, but they continue to sell it to Don't purchase a Bryant AC unit and if you do, purchase the extended service/repair contract because you are going to need it. Location: Sag Harbor, NY Only 3 months since it was installed and already not working. It's so noisy that I have to wear ear plugs to sleep. Location: St. Paul, MN Our Bryant AC is less than 10 years old and our blower and module went out for a bill of over $1300.00. We were told that this is unusual by 3We would never buy Bryant again. Name: N J Ashmore From day one, this unit has been so loud that we are unable to go to sleep at night - the unit sits outside the bedroom wall.

It is loud, and vibrates the entire wing of the house. We have to get the house cooled down enough before bedtime so that we can get to sleep - the last thing we do before going to bed is to re-set the temp to its regular setting. It cools OK, nothing spectacular. Certainly not worth the cost of the unit. No - I will never purchase another AC from this company. Poor quality and poor service. Computer board failed in 12 months. It's taken 5 days to receive new board. House purchased from ****** ***** 2 years ago. Turned the AC unit on at the beginning of June and found no cool air blowing. Had it diagnosed andPart is under warranty but still going to cost $1000Shame on ****** ***** and **** ******* Heating and Air. Customer service sucks from both companies. "Big $$$$$ to get a defective Bryant product replaced" Bryant A coil was installed with a new AC unit two years ago. actually stopped working a little over a year after it was installed.