Archive for July, 2011

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What Types of Air Conditioning Systems Are There?

Friday, July 29th, 2011

Picking out the right air conditioning system for you can actually involve a lot of steps. There are many factors to consider and you will need to understand how each type of air conditioning system functions to know what will be best in your house. Of course, before you can compare them, you need to know what the different types of air conditioning systems actually are.

Packaged air conditioning systems are probably the type that the majority of people are most familiar with. They consist of an outdoor compressor unit that is connected to an indoor air handler or furnace through ductwork within the house. The air is cooled by the compressor and then blown into the house where it is circulated through the ductwork by the air handler.

Packaged air conditioning systems are appropriate for most residential buildings and they come in a variety of sizes so that it is easy to match one to the size and dimensions of your home. However, these types of air conditioning systems do require ductwork, so if you do not already have it installed in your house, putting it in can add considerably to the overall installation costs.

If you do not want to have ducts put in or if you are only trying to cool a small space within your home, you may want to opt for a ductless mini-split system. These types of air conditioning systems are becoming more and more popular because of their excellent energy efficiency and flexibility when it comes to installation options.

Ductless mini-splits also require an outdoor compressor unit, but this is connected to one or more indoor units through refrigerant lines rather than actual air ducts. These refrigerant lines are much easier and less costly to put in place than ducts are, so mini-split systems can be installed for much less than a packaged air conditioning system in a home that does not already have ducts.

These ductless mini-split systems can include only one or many indoor units. Each of these units is controlled independently of the others, making it possible to maintain different temperatures in different parts of your home.

For larger buildings and commercial spaces, central air conditioning systems are generally the preferred option. They are set up essentially the same way as packaged air conditioning systems but on a much larger scale. However, just like packaged air conditioning systems, central air conditioners rely on ducts to get the cooled air to the various areas of the building.

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Can I Choose Environmentally Friendly Coolants?

Wednesday, July 27th, 2011

Air conditioners are indispensable in many parts of the country, but their environmental impact has long been a source of controversy. In particular, the coolants that were used in the earliest air conditioners, chlorofluorocarbons (CFCs) have done quite a bit of damage to the Earth’s protective ozone layer.

When this affect was discovered, countries all over the world acted to have them phased out of production and use in air conditioning. While CFCs have not been produced since 1995, there are still many air conditioning units functioning today that use CFCs. As these units wear out, of course, the CFCs will gradually disappear from use altogether.

Another type of coolant that is commonly used in air conditioners is hydrochlorofluorocarbons (HCFCs). These have a slightly lower environmental impact than their cousin CFCs, but they are still not ideal in terms of preserving the ozone layer and impeding the progress of global warming. HCFCs are gradually being phased out as well, and they will no longer be produced at all by 2030.

However, it is still possible to buy air conditioners that use HCFCs as a coolant, and if you can avoid this, you should. HCFCs are not nearly as environmentally friendly as some of the other options on the market, and if you are concerned about the effect that these types of chemicals can have on our environment, it is best to steer clear of air conditioners that use HCFCs.

So what coolants are considered environmentally friendly? Well, there are actually two options in this regard. The first are hydroflourocarbons (HFCs). Although they are quite similar to CFCs and HCFCs, HFCs do not contain chlorine and so do not do the type of damage that their predecessors were capable of. You can find air conditioners that use HFCs relatively easily by looking for an “ozone friendly” label on the box.

Refrigerant blends are also becoming a more and more popular environmentally friendly coolant solution for air conditioners as well. Although these types of coolants typically cost more to produce and so can drive up the cost of the air conditioners that use them, they should begin to come down in price as they are more widely adopted across the industry. Just as with HFCs, look for the “ozone friendly” label to identify air conditioners that use refrigerant blends as coolants.

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What Size Air Conditioner Will Fit My Home?

Monday, July 25th, 2011

When you are trying to determine what size air conditioner to get, the first thing you need to know is how large the space you want to keep cool is. Air conditioners come in a wide variety of sizes and each is appropriate for a particular type of space. So once you know how big the space is, you will be able to compare that to the capacities of the various air conditioners out there to find the right one for your needs.

The cooling power of air conditioners is actually measured in British Thermal Units, or BTUs. Each BTU rating corresponds to a particular square footage which that air conditioner should be able to cool properly and efficiently. For instance, a 10,000 BTU air conditioner can cool a room that measures between 400 and 450 square feet, and so forth. The higher the BTU, the larger the area the air conditioner can acceptably cover.

It is pretty easy to see why you would not want to pick out an air conditioner that is too small for the space you need to cool. The system simply would not be able to keep the space cool enough and it would use a lot of energy trying.

However, that does not mean that the bigger the air conditioner is the better. In fact, you will do just as poorly to purchase an air conditioner that is too big for the space you want to cool than one that is too small. This is because air conditioners do more than cool the room. They also remove humidity as they cool the space.

An air conditioner that is too large will cool the room quickly, causing it to switch on and off frequently. Not only is this annoying because of the noise that the air conditioner makes, but it also increases the wear and tear that the unit must endure. An air conditioner that is too big will also not be able to remove humidity as efficiently because the room is cooled so quickly. Plus, it will use much more energy than necessary to do a sub-standard job.

With these types of calculations, it is relatively easy to pick out a single room air conditioner. However, if you are trying to purchase a whole home air conditioning system, you will probably need a professional to help you figure out exactly how powerful you need the system to be to keep your home comfortable and cool all summer long.

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The Advantages of an Air Conditioning System

Friday, July 22nd, 2011

Just about everyone knows that air conditioning systems keep your indoor environment cool and comfortable during the hot summer months. While this may be enough of a benefit for you, there are also some other benefits to having a central air conditioning system installed in your house as well.

For instance, if you have someone in your household who is more susceptible to extreme temperatures than most people, an air conditioning system can actually help improve their overall health. Babies certainly fall into this category, as they have more difficulty than older children or adults do controlling their body temperature.

Also, many elderly people or people suffering from certain medical conditions, particularly heart conditions, are especially sensitive to the heat. If they are unable to stay cool, it can be very dangerous and damaging to their health, and an air conditioning system helps to guarantee that they will be able to stay cool and comfortable even on the hottest days of the year.

Aside from direct health concerns, air conditioning systems can also help to alleviate the symptoms of colds and allergies. They do this by controlling the level of humidity inside your home. If the air in your house is too moist or too dry, it can exacerbate cold and allergy symptoms, as well as dry out skin and make the indoor environment generally uncomfortable.

Proper humidity control is also important because it helps to ensure that any air filtration or purification system you have in place is able to operate at peak efficiency. Many of these units have a hard time extracting particulate contaminants from the indoor air that circulates through them if that air is too humid or too dry. With a state of the art air conditioning system in place, however, you will not have to worry about whether or not the humidity level in your home is out of balance.

It is also worth noting that a central air conditioning system can be preferable to a window mounted unit because it provides for a more even distribution of cool air throughout the house. Also, when you have a central air conditioning system, the condenser which is the source of most of the noise and vibrations that air conditioners make will be located outside and out of earshot. With window mounted units, on the other hand, there is really no way to block out or diminish the noise.

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How Much Will a High Efficiency Air Conditioner Save You?

Wednesday, July 20th, 2011

When it comes to your air conditioning system, the energy efficiency rating really does matter. While you may be paying a bit more for products with higher energy efficiency ratings to begin with, you will certainly save a significant amount on your monthly cooling bills in the years to come.

Before you can evaluate your options in terms of energy efficient air conditioners, however, you will need to know how their efficiency is represented. Most air conditioners come with what is called a seasonal energy efficiency rating (SEER). A higher SEER means a more energy efficient model, and likely a higher price tag as well.

But how much more energy efficient is a SEER 10 air conditioning unit as opposed to a SEER 11? Well, the truth is that it is about 7% more efficient. However, a SEER 14 will be 23% more efficient than a SEER 10, but only 5% more efficient than a SEER 13 model.

While all of these numbers can help give you some context in which to evaluate the various air conditioners out there, they can only go so far. Turning these percentages into dollars is what you really have to do when you are trying to figure out what your monthly or yearly savings will be.

So to give you a bit of perspective, imagine that your annual cooling costs come to around $480 with your current SEER 10 air conditioning system. If you choose to upgrade to a SEER 13, you will save somewhere in the neighborhood of $110. But if you opt for the SEER 14 instead, you will gain an annual savings of closer to $140 compared to your current bill.

Of course, the SEER of a particular air conditioner is not the only thing that will cause the price of the unit to rise, nor is it the only thing that can cause your monthly cooling costs to rise. Air conditioners also need to be matched to the size of the space they will be asked to keep cool.

If the unit you have is too small to effectively cool the area in question, you are likely paying more than necessary in terms of cooling costs for less than ideal results. Similarly, if your unit is too big, you will be paying too much no matter how high a SEER rating it has.

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What Is New in Air Conditioning?

Monday, July 18th, 2011

There are developments being made in air conditioning just about every day. This is a huge business, and so manufacturers are constantly trying to outdo each other as it is their only way to compete for customers. What this means for you as a consumer is that you will always have an excellent selection of products from which to choose.

Energy efficiency is one of the main selling points for any air conditioning system. For that reason, manufacturers are constantly working to come up with new and better models. The most advanced air conditioning systems on the market have energy efficiency ratings that by far surpass what was available even ten years ago and it is only going to keep getting better.

Another type of air conditioning system that is relatively new but is rapidly gaining in popularity is the ductless mini-split system. These and other compact air conditioners are popular because they can be installed virtually anywhere and do not take up much space. They also do not require the duct system that many other central air conditioners do.

In this way, ductless mini-splits combine the best of central air conditioning and more conventional window or wall mounted units. They keep individual rooms of your house cool and comfortable and can be controlled independently of one another, but they are also very quiet and energy efficient. In fact, ductless mini-splits are among some of the most energy efficient options available in the air conditioning world today.

For many years, enjoying the comfort that air conditioning provides has meant putting up with the noise of the compressor as well. Now, however, you can get the best of both worlds. Many air conditioning companies, in response to customer requests, have been working to curtail the noise and vibrations that air conditioners make.

This has affected models all up and down the line. Whether it is a window mounted unit you are after or a large central air conditioning system, you can rest assured that the model you buy today will be much quieter and produce a great deal fewer vibrations than your old system.

This is not only good news for you. It can also help to make your relationship with your neighbors a bit friendlier. The outside component of most air conditioning systems is usually where all the noise and vibrations come from anyway, and so your neighbors are likely to hear and feel it as well.

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How Often Do You Change Your Filters?

Friday, July 15th, 2011

The core component of any good air quality system is the filter. A good air filter removes almost all of the particles that inundate your home every day – from the pet dander that flakes off of your cats or dogs to the pollen released by plants both indoors and out.

But many homeowners are not aware of when they should change the filters in their air quality system. They know it should be done regularly, but how often and when do you ignore the manufacturer’s recommendation to ensure higher quality air?

Know Your Home

The first thing to consider is the size of your home and what types of contaminants you must deal with each day. Air testing helps with this, as does regular cleaning of the areas around your air filter, including your ductwork. If you don’t have any pets and don’t keep any plants inside, your biggest air quality issue is likely dust, and dust will only fill up the filters quickly if you have a large family.

However, if you have a lot of pets, multiple plants and a large family, the odds are that your filter is being put through the ringer every day – asked to filter out a tremendous number of contaminants. This is when you might need to change the filter more often.

Changing Your Filter

If you have a high quality HEPA filter, it’ll probably work for as long as it’s rated. Only lower quality filters or those not large enough for the space in which they are installed will fail early. However, keep in mind that a HEPA filter, even when it can last longer, should always be changed no later than the manufacturer’s recommended date.

For most homes that timeframe is about 6 months. However, some higher quality filters can last as long as 12 or even 18 months in the right conditions. If you use your air filter in conjunction with an air purifier, you should also have the cartridges changed out at the same time as your filter.

If you think you are changing your filters too often, you can always have your air tested to determine if the contaminants in your home require less filtration. Some home have filters larger than they need installed or lower grade filters that get changed too often unnecessarily. As long as your family is safe and healthy, you might as well try to save some money.

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How Can You Improve Your Home’s Air Quality?

Wednesday, July 13th, 2011

One of the easiest ways to protect the health of your family is by maintaining high air quality in your home. Without good air quality, you run the risk of contracting Sick Building Syndrome or making other problems like allergies or asthma worse. Depending on what type of air quality system you already have in place, there are many things you can do to improve your air quality.

Filter Changes

The easiest way to improve air quality is to maintain the equipment you already have. Specifically, change your filters regularly. Filters each have a specified period of time for which they will last. However, if your home has high levels of larger contaminants like pollen and dander, you may need to change your filter more often.

Beyond filter changes, make sure your filtration device uses high quality HEPA filters, capable of stopping debris as small as 0.3 microns.

Cleaning Your Ducts and Equipment

Another easy way to reduce the load on your air quality system without paying for new filters every two months is to clean the equipment and the ducts in your house. Ductwork quickly gets clogged with dirt, dust, and other debris being blown by your furnace and air conditioner. If you have a boiler and radiant heat system this is less of an issue, but you should still check your air vents and any air conditioner units in your house for excess dirt and debris buildup.

Your air quality equipment should have a specified timeline for regular cleanings – usually every six months to one year depending on the size and quality of the equipment. A lot of this cleaning can be done by you, but for advanced cleaning or parts replacement, you may need a professional.

New Equipment

Finally, you can buy new equipment that does a better job of removing contaminants from your indoor air. If you have only a simple air filter, consider getting a purifier as well to remove other contaminants like smoke and gas. If you have a smaller piece of equipment that works well but longer keeps up with the entire house, there are larger purifiers on the market that can handle a bigger space. Additionally, proper ventilation can help with your indoor air quality if you don’t currently have enough fresh air circulating through your home.

No matter what your problem, there is a solution you can work toward to keep the indoor air quality of your home high.

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Allergies – Different Products that Can Help with Different Problems

Monday, July 11th, 2011

One of the biggest problems related to indoor air quality is allergies. When not treated properly, excess dust, humidity, bacteria, mold, and other contaminants can cause a number of allergy problems, especially if anyone in your home has asthma and is particular sensitive to a contaminant.

Luckily, there are quite a few products on the market designed to reduce the effect of indoor allergens and help you feel comfortable all year long.

Filters

HEPA air filters are designed to capture incredibly small bits of debris in your home. They remove things like dust, mold, debris, pollen, and pet dander before they can trigger an allergic reaction. The best filters are all HEPA certified and are available either for a single room or for your entire home. The size of your home and the amount of contaminants you have will ultimately determine which filter is best for you.

Purifiers

For those with allergens beyond dust and pollen, purifiers are a good next step. Air purification is done electronically, utilizing ionization technology to remove things like gas and smoke as well as bacteria and viruses that get into your indoor air. Anyone suffering from even a mild bout of seasonal allergies can be made very uncomfortable by these types of contaminants. Advanced purification systems also come with UV germicidal lights to kill bacteria and viruses.

Ventilation

While capturing the bad stuff in your air is important, so too is getting new air into your home. Allergies are triggered as much by stale air as by the allergens in it. So, a good ventilation system is important. Simple fan units work very well for many families, but if you want to avoid the loss of heated and cooled air during the most extreme weather in your area, an energy recovery ventilator is a good alternative to straight fan ventilation.

Humidity

Finally, humidity is a big issue for many families. Dryness in the winter can make colds and flus worse and excessive humidity in the summer is a haven for things like mold. A good humidifier removes humidity when it gets too high and adds moisture to the air during the winter when it gets too dry.

Always do your research before choosing an air quality system for your home. It’s important to choose components that will help you overcome whatever allergies you face, throughout the year.

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Can Indoor Air Quality Systems Help Get Rid of Bed Bugs?

Friday, July 8th, 2011

Indoor air quality systems are designed to remove a lot of unwanted contaminants and allergens from your home. But, they can also help remove some unwanted pests. Dust mites, for example, can only survive in humidity of 50% or greater. But, what about bed bugs – a much larger problem for many homeowners? Can you get rid of them with your air quality system?

Bed Bug Facts

Bed bugs come into your home on clothing, luggage or other people. They don’t sprout out of any one particular condition, so no matter how clean your house is, you can be exposed to bed bugs at work, on the train, or when visiting friends. Once you’re exposed, it is very easy to bring them into your home where they quickly spread to the rest of the family.

Bed bugs don’t generally live far from people, so you won’t find them in dirty ducts or hiding in your air vents very often. That makes it even harder to get rid of them without a full blown fumigation of your home. However, there are some things your indoor air quality system can do that will make a difference.

Indoor Air Quality Actions to Take

Bed bugs don’t just thrive on your family, but on the conditions in which you live. They’ll get into the nooks and crannies of your furniture and your clothing and wait until night fall to come out and bite. So, one of the easiest things you can do is utilize a complete air filtration system to remove all the extra debris and dust that builds up in your home.

Humidity control will also make it easier to clean your mattress and the surrounding areas with a HEPA certified vacuum cleaner. If you have ductwork, make sure it is cleaned regularly. While bed bugs don’t hide in duct work very often, some will and every bed bug you can destroy is one less that will bite you.

Finally, avoid any pesticides while your family is in the house. Pesticide exposure is a common cause of illness in children and pets. It can be avoided with careful attention to indoor air quality and cleanliness. If you need to fumigate, call a licensed exterminator who can do so without putting anyone in your home at risk. They can help you layout a good fumigation plan and block future infestations.

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