Carney All Seasons Blog: Archive for the ‘Air Conditioning’ Category

Alternatives to Air Conditioning in Your Home

Wednesday, August 31st, 2011

Let’s face it – we rely pretty heavily on air conditioning to keep us comfortable during the warmest months of the summer in Hatboro. So, what do you do when the mercury dings 90+ and your air conditioner is either broken or you are in a place without AC? Luckily, there are alternatives. Here are some of the better options:

  • Move Air through the House – As simple as it sounds, air circulation can have a huge impact on the temperature inside, especially in the late afternoon. Mid-afternoon sun will hit your roof no matter how many trees you have planted. The result is a decent amount of heat pouring into your home. But, if you open the windows and let a cross breeze through, amplifying it with fans, especially ceiling fans, moving air will carry that heat out of the house later in the day when the temperature drops.
  • Block Direct Sunlight – Unless it’s 90+ degrees outside, most of the discomfort in heat comes from direct sunlight. Block that direct sunlight and you severely reduce how warm it might get in your home. Trees planted along western, eastern and southern walls do this very effectively, especially if they are deciduous and will allow in the warming sun in the winter.
  • The Power of Water – Feel warm? Get some cool water and place it on your forehead, arms or legs. A bowl of cool water in front of a fan can be soothing as well, assuming humidity isn’t a problem. If it is, consider getting a dehumidifier to run in lieu of an air conditioner for those days that aren’t too hot. They are less expensive and can reduce discomfort significantly.
  • Evaporative Coolers – Evaporative coolers are extremely popular in Europe and Japan where energy costs are relatively high. They use up to 80% less electricity than air conditioners, don’t require refrigerants linked to global warming, and they work extremely well in dry heat. There are evaporative coolers available that can cool your entire home, though the most common devices are those designed for a single room. They are sometimes called “swamp coolers” as well.

I’m sure we’d all rather have a comfortably air conditioned room to lounge in during the hottest months of summer, but in lieu of electric powered comfort, keep in mind the simple, effective ways people have been staying cool for centuries.

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Different Types of Room Air Conditioners

Monday, August 29th, 2011

If you are like most people in Lansdale, you probably picture the air conditioner hanging out of the window when you think of room air conditioners. However, while these are by far the most popular type of room air conditioners, they are not the only option. When you are shopping for a room air conditioner, it is a good idea to explore all of your options before you make a purchase.

The traditional window mounted air conditioners have plenty of advantages, and that has helped to keep them at the top of the room air conditioner market for a long time. These types of units can be installed in windows of multiple sizes and you can just about always get them in yourself. These units are available in a wide variety of sizes too, so you will be able to match the unit to the size of the space you need to cool.

No matter what type of air conditioner you get, it is very important to make sure it is the right size for the task you have laid out for it. Bigger is not always better and you do not want an air conditioner that is too powerful for the space any more than you want one that is too small. Also, be sure to check the energy efficiency rating of the air conditioner you are considering before making your purchase. That can save you a lot of money over time as well.

Another type of room air conditioner to take a look at is a wall mounted unit. Many of the window mounted units can actually be used in this way as well, but the installation involves actually making a hole in the outer wall of your home so you will most likely need some professional help to get it in place.

Just like window mounted units, wall mounted air conditioners come in all sizes and with all different energy efficiency ratings. Always take care to check out the specifics of the model before you buy it to make sure it is the right choice for your home.

Portable air conditioners are a third option in the room air conditioner category. They typically have wheels so that they can be easily moved from one room to another and they have an exhaust hose that must be hooked up to a window to ensure adequate ventilation. These types of room air conditioners are usually more expensive than wall or window mounted units, but it is definitely convenient to be able to move them from one place to another.

If you need more information to decide which type is best for you house, contact your local professional.

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Quick Tips From Perkasie: How to Save Money on Air Conditioning

Friday, August 26th, 2011

You’ve probably heard once or twice that the cost of running your air conditioner is more than that of any other single electrical device in your Perkasie house. That means you’re spending hundreds and possibly even thousands of dollars each and every year to stay cool. It’s well worth the investment as the risk of not having air conditioning is much too high, but there must be ways to cut the costs, right? With careful attention to how your AC operates and when you use, there are some things you can do to slash those costs. Here are a few of the easiest:

  • SEER Matters – What is this magical acronym you hear so much? SEER refers to how many BTUs your air conditioner can produce with a single watt of electricity. A low SEER device therefore uses a LOT more electricity to produce the same volume of cooling as a high SEER device. Since current devices offer SEER of 13 or higher (some are up to 20+), just about any upgrade will save you money relatively quickly if your current air conditioner has a rating of 8 or lower.
  • Program Your AC – If you have a single point analog thermostat, you’re wasting a LOT of electricity. You’re either paying to cool your house while it’s empty or you’re coming home to a roasting hot living space. Purchase a programmable unit and set the system to 85 degrees when you’re not home. With timers in most digital units, you can tell it when you’ll be home so that you walk into a cool, comfortable space without having to keep it cool all day long.
  • Use the Landscape to Your Advantage – Instead of relying solely on your air conditioner to keep the house cool in the summer, plant some trees and shrubs around the house to block the sunlight. Simply adding some shade to your property can directly reduce how much heat your home absorbs throughout the day and reduce how much your AC unit needs to work to keep you cool.
  • Ventilate Your Roof – A good third of the heat in your home is absorbed directly through the roof. To keep this heat from affecting the rest of your home, install a roof fan that ventilates the excess energy and keeps the attic at a steady temperature. Less heat up top means less cooling needed down low.

A good air conditioning system is effective no matter what the temperature does, so it’s easy to forget how big your bill will soon be. To avoid an overblown bill, keep an eye on your cooling and follow these simple tips to cut back on use. To get more energy saving tips, talk to your HVAC contractor.

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AC As a Safety Feature in the Home: A Tip From Horsham

Monday, August 22nd, 2011

Ask a hundred people in Horsham what the primary role of air conditioning is and I’ll bet you they say “comfort”. We seek out AC to stay cool and beat the summer heat, but did you know your air conditioning is a lot more than just a convenience – it is a safety feature in the midst of heavy heat waves.

Heat Is More than Just Uncomfortable

We tend to think of heat as an uncomfortable inconvenience. In reality, it is quite dangerous. According to the Center for Disease Control, heat waves killed 8,015 people between 1979-2003, more than hurricanes, tornadoes, lightning, earthquakes and floods combined in that time period.

Why is heat illness so dangerous? It comes on quickly and it’s easy to ignore the warning signs, especially when you are already uncomfortable. While hydration is important, the real risk occurs after you’ve become dehydrated – when your body can no longer keep itself cool. This is known as heat stroke and can lead to a number of life threatening conditions, especially for the elderly, infants and those with chronic conditions.

That’s where air conditioning comes in. On the CDC’s extreme heat preparedness webpage, air conditioning is listed as the number one preventative factor against heat related illness. Simply put – if you have an air conditioner, there is a much smaller chance you will get sick from the heat. Dehydration happens less frequently when you’re in an air conditioned environment, meaning that your body can regulate temperature internally and you feel comfortable – not a bad deal for a simple installation.

Staying Cool Is a Medical Necessity

Heat is more than just a direct threat. It addles the mind and makes your reaction times slower. In effect, by allowing your body to overheat, you put yourself at risk. Simple tasks like climbing a ladder or taking out the trash could result in an injury because you don’t have the energy or the mental clarity to perform them as you would on a normal day.

So, air conditioning is about a lot more than just staying comfortable – it’s a health issue. Especially if you have small children or elderly adults in the house or if anyone in your family has a medical condition like obesity, heart disease, mental illness, poor circulation, an air conditioning system is an absolute must during heat waves. If you need more information about how to keep your home cool, contact your AC contractor.

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How to Calculate Duct Size for an AC System

Friday, August 19th, 2011

Duct sizing for air conditioning is a complex process using one of three methodologies. The goal of duct sizing is to provide the perfect space through which heated and cooled air can travel around your Conshohocken home. Ducts should provide ample air flow to keep you comfortable without overworking your HVAC system or costing you an arm and a leg on your energy bill.

Methods Used for Sizing

There are three methods used for most modern duct sizing. The first is the Velocity Method. The velocity method takes into account the speed at which air flows through the ducts based on their general size. A series of equations is used to determine this, including duct cross sectional area, air flow rate and air speed. A much more detailed breakdown is available on the EngineeringToolbox.com for those interested in the math behind the process.

In general though, the velocity method allows contractors to determine the appropriate size and layout of ducts based on their application (residential, commercial, industrial or high speed) and their position (main or branch ducts).

Contractors may also use the Constant Pressure Loss and Static Pressure Recovery methods to design ductwork for your HVAC system. The constant pressure loss method tends to result in more components but provides a more accurate reading of the actual pressure loss in the system based on the materials used and the layout of your ductwork.

Static pressure recovery focuses on ensuring the same pressure level is achieved at all vents and inlets for the system. It is probably the most complicated sizing method, however, so it is rarely used for residential installations.

Simplifying the Process

Were we to break down the process into its core components, this is what a contractor would do when sizing your duct work:

  • Determine CFM for Each Room – using the Manual J for load calculations, they would determine the CFM. This is based on the (Room Load/House Load) x Equipment CFM. The entire house must be measured and load calculations completed before this can be done.
  • Friction Loss Rate – Friction loss rate is the (Available Static Pressure x100 / Effective Length).
  • Duct Sizing – Finally, the contractor will use a chart or software to select ductwork based on the friction loss and CFM calculated in the first two steps.

The goal of all of this math is to ensure that the system installed is exactly as large as is necessary to distribute heated or cooled air to the entire house. Incorrect measurements result in improper delivery of that air and a system that doesn’t quite get the job done.

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Will My Air Conditioning Work Better with Dehumidification

Wednesday, August 17th, 2011

There are a number of common misconceptions, in Blue Bell and everywhere else, about humidity and air conditioning and how one affects the other. In truth, humidity is a major part of the discomfort we feel when the mercury rises. It can be 78 degrees outside but feel miserable simply because the humidity is high. So, many people wonder whether a dehumidifier is a good solution to moderate heat and how it will work in tandem with an air conditioner.

Humidity and Your Air Conditioner

First, remember that air conditioning naturally lowers humidity because it cycles air through its condenser and evaporator coil. Conditioned air is naturally lower in humidity, regardless of what’s going on outside. So, if it is hot outside and humid, an air conditioner alone is very effective. On the other hand, a dehumidifier is useful is when the temperature isn’t that high but the humidity is.

Dehumidification not only lowers the relative humidity in your home, it reduces the need for cooling because you will feel more comfortable. Not only that, but a dehumidifier costs significantly less to run. So, when the temperature outside isn’t that high, there is no need to use thousands of watts per day of electricity just to stay comfortable.

This also reduces the overall wear on your air conditioner. Since it doesn’t need to run 24 hours a day to reduce humidity, wear and tear on the device is reduced and you save a tremendous amount of money on repairs and eventual replacement costs.

When to Use a Dehumidifier Alone

Generally, the Department of Energy recommends setting your air conditioner to 78 degrees and using a combination of a dehumidifier and fans to stay cool while it is off. If the temperature rises above that level, the air conditioner will turn on and supplement your dehumidifier. Consider too that a dehumidifier will reduce the burden placed on your air conditioner to pull humidity from the air. Humid air takes more energy to cool than dry air. Despite the fact that dehumidifiers will often raise the air temperature by 1-2 degrees, they save energy and make you more comfortable.

So, if you’re looking for a way to reduce your energy bill, improve your indoor air quality, and enhance the longevity of your air conditioner, look no further than a quality dehumidifier.

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When Should You Check Your AC Filters: A Tip From Chalfont

Monday, August 15th, 2011

The filters on your air conditioning unit in your Chalfont home are vital for keeping out the dust and debris that make things like illness, allergies and air quality worse. And it’s important that you take personal responsibility for checking those filters. Sure, you have a professional visit your home once a year to check the air conditioning, but you should also check the system yourself on a semi-regular basis for possible filter degradation.

Monthly Checks

So, how often should you check? Think of it this way. There is no such thing as checking too much, but you can easily not check often enough. So, we recommend checking your filter at least once every 4 weeks. It may not always need to be changed during that four week checkup (sometimes it can last 6 weeks or longer), but it’s good to take a peek.

Why is this so important? Because filters that haven’t been checked and changed as needed have a habit of building up excess sediment and debris. Not a problem when it comes to actually working, but a huge problem when it comes to your energy bill. The harder a system has to work to keep you house cool, the more energy it draws and the more you pay to have cool air in your home. And it will break down much faster as a result of overwork and dirty filters.

Changing an AC Filter

If your filter is ready for a swap, here are some quick tips to get the job done:

  • Find Your Filters – If you don’t know where your filters are, ask your contractor on the next visit or look near the return grills by the thermostat.
  • Remove the Filters – Open the latches and pull the old filter out to check it. You should be able to see clearly through a permanent filter and a disposable one should still be white. If this isn’t the case, it’s time for a cleaning/replacement.
  • Clean the Area – Clear the grill and area of any debris and sediment that might make the filter worse after replacement.

Proper filter maintenance only takes five minutes and it will save you money every month you run your AC – not a bad deal for a few minutes’ work.

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The Energy Efficiency Rating of Central Air Conditioners: What Is it and Why Is it Important? A Tip From Green Lane

Wednesday, August 10th, 2011

When you are shopping for a central air conditioning system in Green Lane, you will have to evaluate your options based on a number of different factors. For instance, you will need to decide which type of system is the best match for your home and for your particular cooling needs. It is also important to make sure that the central air conditioner you choose is the right size for the cooling load it will have to take on.

However, it is also very important to evaluate your central air conditioning options based on how energy efficient they are. This will have a great deal to do with how much you pay in terms of cooling costs each month, which makes it easy to see why you should take it into account before you make a purchase.

The energy efficiency of a central air conditioner is generally expressed as a seasonal energy efficiency rating, or SEER. The SEER numbers you will typically find on the latest air conditioning systems range from eight to 19.5 with the higher numbers signifying a more energy efficient model.

So it is pretty easy to figure out that a central air conditioner with a higher SEER will save you some money monthly because it will use less energy to get the same job done. But central air conditioners with high SEERs also typically have high price tags. So to determine how high of a SEER you need, you will need to know more exactly how much more money you will save as you move up in the rankings.

You can do this by comparing the SEER of the system you currently use with the new system you are considering and compare how much your current energy usage would cost you with each model. Basically, you want to pick a central air conditioner that will save you enough to offset the purchase price of the unit.

Often, this means that you will be best off with a SEER 14 or SEER 16 because these units save you a considerable amount over older models without carrying too high a purchase price. However, the amount you save will be directly related to how much you use your central air conditioning system, so if you live someplace that is extremely hot for a large chunk of the year, it may be worth it for you to buy a very high efficiency air conditioning system.

If you want more information about which type of air conditioner is right for you, contact your local HVAC professional.

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Warning Signs: When to Call for an Air Conditioning Service

Monday, August 8th, 2011

The last thing you want is to be without an air conditioner during the hottest days of the year, especially in Elkins Park. Ideally you would never have to call for service to repair your air conditioning system, but just like anything else, your air conditioner will break down once in a while. However, you can dramatically reduce the inconvenience and cost of emergency air conditioning repairs if you are able to spot the warning signs of a problem before it shuts down your system completely.

For instance, all air conditioners make noise, but if your air conditioning system is suddenly making much more noise than it used to, chances are that something in there is not working properly. Calling for repairs when you notice this sudden increase in noise from your system will greatly increase the chances that the repair will be relatively minor and that you will not have to go without air conditioning when you need it most.

Also, it is a good idea to call for service if your air conditioning system does not seem to be doing as good a job as it used to when it comes to cooling your home evenly and effectively. Uneven cooling is a good sign that something is not working right within your system. And even if your air conditioner continues to work, it will probably be using up more energy than necessary for a less than ideal end result.

Along these same lines, a noticeable increase in humidity in all or part of your home is another good indication that something is wrong with your air conditioning system. Air conditioners both cool and dehumidify the air, so if yours stops removing humidity properly, you need to find out why.

In fact, even if you do not notice any difference in the way that your air conditioner is performing, you can still spot a problem if you keep a close eye on your energy bill. If you see a sudden increase in the amount of your bill because of the amount of energy that your air conditioning system is using, it is a good sign that something is not working right.

It may be tempting to put off calling for repairs, particularly if your air conditioner is still able to keep your house comfortable. However, it will likely be much cheaper and more convenient to have the repairs done early rather than waiting until the unit breaks down entirely.

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Why You Cannot Neglect AC Maintenance: A Tip From Hatboro

Wednesday, August 3rd, 2011

Especially if you have just purchased a new air conditioning system (as I did in my home in Hatboro) maintenance is probably the last thing you are thinking about. In fact, if you are like most people, you do not think about your air conditioning system at all until it does not work when you need it. But if you simply continue to use your air conditioning system without maintaining it, you will be setting yourself up for a lot of problems later on.

Just like your car or any other machine that you run on a regular basis, your air conditioning system requires a regular tune up to keep it running like it is supposed to. The type of air conditioning system you have will dictate exactly how often this maintenance service needs to take place, but most systems benefit greatly from having a tune up once a year.

When you have just purchased an air conditioning system, the last thing you probably want to do is shell out a bunch of extra cash when the system is still running fine. But it really is much cheaper to pay now rather than waiting until you have a problem with your air conditioner to call for service.

During a regular maintenance visit, your technician will examine all of the component parts of your air conditioning system to make sure that they are working the way they should and not showing any signs of excess wear and tear. This is a great way to detect problems early, even when they have not yet begun to show in the air conditioner’s performance.

Your air conditioning technician will also thoroughly clean out your system to ensure that no excess debris is allowed to build up around the coil or other vital parts of the air conditioner. This is important because it helps the air conditioner to continue to function at peak energy efficiency levels. Without regular maintenance, your air conditioner will gradually lose efficiency over time. It will only lose a little bit every year, but if you do not do something to stop it, those little bits will quickly add up.

Regular maintenance also helps to prevent more costly and inconvenient repair visits later on. And it will certainly help to increase the lifespan of your air conditioner as well. Whether you have just purchased an air conditioning system or have had yours for several years, it is never too late to start your annual maintenance visits.

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