The AC in HVAC stands for Air conditioning. Air conditioning refers to the process of getting rid of unwanted heat and moisture from the interior ambient environment of a space occupied by people. The air conditioning system is installed in interior space to provide thermal comfort for occupants of the room. The air conditioning system is installed in all kinds of interior environment as long as it is inhabited by people even animals. Also we can find the air conditioning system installed in places where electronic devices like computer servers, power amplifies that generates much heat to provide a cool environment free of humidity. So air conditioning systems are installed in the interior of residential apartments, office spaces and other form of commercial space, cars and buses, airplanes, boats and ships.
Air conditioner employs a mechanism that uses fan to distribute air that has been conditioned to an occupied room. The conditioned air provides thermal comfort and improves interior air quality. This cooling can either be achieved through what is called the refrigeration cycle or desiccants. Air conditioning system can be based on electric refrigeration. This type of AC units range from small units that can keep a small bedroom cool, (such units can be carried by a single adult) to massive units that are technically installed on the roof of office towers that can cool an entire building. On the other hand AC units can also be based on desiccants (chemicals effective in the removal of moisture from the air). We could also have AC units based on subterraneous pipes which can distribute the heated refrigerant to the ground for cooling.

Types of Air Conditioning System.
1. Cooling Only Split-System: This AC system combines indoor air handling unit and an outdoor condensing unit. The split systems are commonly found in residential or small commercial buildings. One advantage of these systems is that they have the highest energy efficiency rating (EER) of all the available AC systems.

2. Cooling Only Packaged-System: A packaged system as compared to the split system is a single unit. It combines all the components that are described in the split system. The packages system typically works in a way such that it is installed outside the building and the air indoor is “ducted” from the building to the system and back through an air distribution system.

3. Chilled Water System: The chilled water system provides cooling though the pumping of liquid water throughout the building to “chilled water coils”. A cooling plant is needed for the water to be at a cold temperature. This cooling plant is typically referred to as a chiller plant.

4. Window Air Conditioners: As the name suggests, the window air conditioner is typically installed in a window or fitted in an opening in the wall. The window areas is limited in the size of space it can cool. It is built to cool small spaces.

Benefits of an Air Conditioning System:
• It provides thermal comfort to occupants in the room.
• It helps in reducing the risk of skin irritation caused by heat.
• It provides occupants in the room with a relaxing atmosphere.

Keeping It Cool: Your Ultimate Air Conditioning Buying Guide

Air conditioners provide a good escape from the heated weather. When the heat gets unbearable, one would rather seek some chilling comfort in an air-conditioned room. Room air conditioners cost less and are energy-friendly.
According to a statistics released by Energy Star, most households spend as part of their utility bill 13 percent on cooling. Hence the need to choose the right window unit air conditioner among over 6.5 million units that are being purchased yearly. The size of an air conditioner in the room has to be considered. A too small sized one won’t serve well in cooling the whole room while one that is too big does so quickly but gets the whole room so moisturized, too cold and clammy.
Things to Consider in Finding the Best Air Conditioner for Your Space
1. Do a Noise Test
You sure would not want to install an air conditioner that constitutes a nuisance to your eardrums. Excellent models barely make noise. The slightest noise that could be made is that of the running fan. But models that rank low are disturbing especially at night whether set on low or set on high.
2. Consider the Location of the Window
The position of the window either at the left, right or centre matters in maximizing the use of your air conditioner. Since window air conditioners perform better when blowing towards one direction, it is better they are strategically installed at the centre of the room for a uniform cooling. However, there are some air conditioners that have fan arms which swing around.
3. Get Your Air Conditioner Installed Properly
You have to ensure that the air conditioner is well installed to get the most from it. Most of the air conditioner units are designed to fit properly windows that are double-hung. However, a through-the-wall air conditioner may be suitable for other window types such as casement windows. When installing your air conditioner, ensure your window unit is at a level position for proper drainage. More importantly, ensure no device that generates heat such as a desktop or lamp are near the installed unit.

4. Keep the Filter Accessible
The location of the filter must be accessible. This makes cleaning easier. You would always require the use of the filter for cleaning. This would help keep the unit in an excellent condition at all times.
5. Opt for the Smart Cooling Option
Trust me, you don’t want to miss out from the technology of having your air conditioner controlled by your smartphone. With the smartphone setting of your unit, you can have all cooling units installed in your home connected together and operated from your smartphone.
6. Look for a Good Warranty
Air conditioners of different models come with different warranty offer. Purchasing an electrical appliance with a longer warranty is safer because electrical appliance at times come with unpredictable disappointments. When purchasing a brand new unit, one could easily visit the website of different brands to pick the one with a longer warranty period.

Surviving winter with your HVAC system

Winter can be a particularly tough time of the year. Even during the Christmas cheer, the thought of having to brave the biting cold is enough discouragement to not want to get out of bed. HVAC systems help us get through these tough times. You get to wonder sometimes how the folks in the ice age got by through just fires without having a nice furnace or some other heating system circulating warmth. Since HVAC systems are so important to our survival during the cold days of winter, it is only logical that we also do all we can to get these systems working perfectly without breaking down. Being stuck with a faulty furnace on a very cold day is better imagined than experienced. Below are a couple of ways to ensure that your heating system keeps functioning properly
• Deal with the dust: The accumulation of dust is a very big threat to your system. It is capable of damaging not just the heating system but even the vents responsible for letting out collected air from interior spaces. Air filters are meant to remove most of the dust, but even these filters do get clogged by the very dust they’re meant to remove. A sure winner in keeping your heating And HVAC system generally safe is by cleaning out your filters often and changing them occasionally.
• Have the system checked out: Even without any obvious damage or faults, make it a habit to schedule frequent inspections by maintenance technicians on your system. Nipping minor faults in the bud will definitely prevent big breakdowns in the future. Prevention they say is better than cure.
• Fuel: This is a basic point but can lead to quite embarrassing situations. If your heating system isn’t dependent on electricity and makes use of some sort of solid or liquid fuel, be sure to always be conscious of your fuel levels. Running out of fuel especially during off-work periods like holidays can result in an uncomfortably cold experience until you are able to purchase some. Stocking up fuels- especially liquid at home is definitely not a good idea, so it’s better to frequently check up on your fuel levels and be sure you have sufficient to last for quite some time.
• Check the controls: While you want to stay warm on cold nights, you equally don’t want to pay excessively high energy costs; we all make occasional mistakes and it’s always quite possible that you have left your thermostat set to a temperature higher than what you require. You may not notice this early enough since you just want to feel warmth. However, over time, energy costs mount (either as electricity bills or fuel costs) additively from the subtle and unnoticeable extra heat being consumed. Occasionally checking your controls and setting the heat to just what you need to keep warm (well, maybe just a little higher) will save you quite some cash at the end of the winter season.
We do not know everything if there are other ways by which heating systems can be well used in winter, drop them in the comment box so other readers can learn.

Delivering Customer friendly HVAC systems

Either you’re building a new HVAC system totally from scratch or you’re trying to modify an existing one for a different application or a more optimized and efficient operation. You have to do it with the customer in mind. Nobody would buy a system that they can’t readily figure out no matter how advanced the technology is. Your system has to cater not just to the needs of the buyer. It also has to ensure that the buyer can use it easily without having to consult the manufacturer at every point in time. The points we will discuss here will help you to design, develop, build and maintain HVAC systems that buyers would love.

• Break down the user’s guide: Engineers and technicians often forget that the user’s guide is not meant for other engineers but for laymen. Technical language, complex diagrams and complicated illustrations which help to pass along information quickly among professionals can be a significant headache for end users. Be conscious of “dumbing down” the content of your users’ guide. A saying once attributed to Alber Einstein was that “If you can’t explain it to a 6 yr old, you don’t know it well enough”. You could imagine you are trying to explain the operation of the system to a 4th grader. If you’re still not sure, run it through a couple of non-tech family or friends and see if they can understand it.

• Make the positioning of controls intuitive: The focus of engineers on utility and practical use may often clash with the established intuition and long-term understanding of everyday users. In placing controls like thermostat and on/off switches, put yourself mentally in the position of the user and ask “would this be comfortable?” The user only sees the system exterior and is most likely oblivious of the occasional trade-off between aesthetics and functionality. To keep users satisfied, you need to bring yourself to be able to view the systems from their point of view.

• Accessibility to parts: HVAC system components like air filters and others that require regular cleaning should be positioned in locations that are not too obscure. Although some may argue that it will lead to users tampering with parts and damaging the equipment early. It is, however, important to note that maintenance personnel will find their job easier if they do not have to go through sheets and sheets of exterior metal just to carry out routine maintenance.

• Detailed PID diagrams: This is more for the professionals than the users. But in the end, anything that makes an HVAC system function properly will definitely make the user happy in the long run. Ensure that P&ID diagrams represent every aspect of the instrumentation. Maintenance guys will be able to trace faults more easily. In the event of a future remodification, unnecessary damage won’t be done due to ignorance about unique wiring or piping configurations.
Customer satisfaction is a top priority in developing products that will take the market by storm and we hope these points will help you achieve just that.

Five Signs that Your Ductwork Need to Be Replaced

Does the condition of your ductwork really matter? Should I even care about my ductwork? Well, this article explains some of the signs that will help you know when to replace your ductwork. Of course, you’ll also get to understand the condition of your ductwork matter. Your ductwork is responsible for delivering cool or warm air within your living space. Any issues or problems in your ductwork can affect the performance of your HVAC unit and even shorten its life.

If the HVAC ducts in your home get damaged or become defective, your system will be forced to work harder to distribute air throughout your home. It becomes quite difficult for your HVAC unit to keep your home comfortable. Replacing the air duct system of your unit can help maximize its efficiency and make your home more comfortable. It’s important that you hire a licensed technician to replace the defective or damaged ductwork. He will ensure that air ducts of the correct size are fitted within your house and all connections between vents, ducts, and registers sealed. Here are some the signs that would indicate the need to replace your air duct.

Constantly Dusty Home

One of the reasons your home has been dusty on a continuous basis is the presence of leaky ducts. When your ductwork develops leaks, it is obvious that cool or warm air will easily escape while dirt and dust particles get their way in. Ignoring this problem can result in serious issues in your HVAC unit which would lead to an unsafe and unhealthy home environment.

Mold in your Ducts

Mold usually develops in a moist environment. The fact that your HVAC unit is allowing the passage of cool and warm air through it means that, over time, moisture can develop and result in mold growth. How would you know if there’s mold in your ductwork? Simple, strange odor from your air vents. As soon as you smell any strange odor from your ductwork or air vents, have them inspected for mold growth.

Inconsistent Room Temperatures

As mentioned, the air ducts play a critical role in sneering your home remains at a comfortable temperature. They deliver warm or cool air throughout all the rooms in your home. If you notice any inconsistency in the temperatures in your home, chances are there could be a problem with your HVAC ducts. Inconsistent room temperatures, in this case, means some of the rooms are too cold while others are too hot.

Noisy Central Air System

An undersized ductwork would result in a lot of noise. In such cases, you need to hire a licensed HVAC technician to check if you have the correct size or if there’s another problem. If your ductwork is undersized, you’ll need to replace it with the proper size ductwork.

High Utility Bills

If you’ve been paying high energy bills in a recent couple of months, there could be a problem with your HVAC system. The high utility bills could be as a result of leaks in your air ducts. The presence of leaks would mean you’re losing a lot of energy each day hence the increasing utility bills. A licensed HVAC technician can conduct a run a blower test to determine if there’s a problem with your ductwork. If there are leaks, he can replace your ductwork to keep your energy bills affordable.  More info