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

What Is Mini Split Air Conditioning?

Friday, June 10th, 2011

If you are in the market for a new air conditioning system, you have probably heard about the mini split systems that are becoming more and more popular these days. However, without more information, it can be difficult to determine whether or not this type of air conditioner is what you really need to keep your home comfortable all summer.

Mini split air conditioners, like most other conventional home air conditioning systems, are made up of two components. They have an outdoor condenser and an indoor unit that manages the airflow throughout your home. But the main thing that sets mini split systems apart from other types of home air conditioning systems is that these two component parts are connected by refrigerant lines rather than air ducts.

In a conventional air conditioning system, the outdoor condenser cools the air and then transfers it through air ducts to an indoor air handler. That air handler then takes care of distributing the air throughout your house via a larger series of air ducts.

Mini split systems, on the other hand, do not require air ducts to get the job done. Instead, these types of air conditioners make use of a wall mounted unit indoors to both cool and circulate the air after receiving coolant from the compressor outside. These wall mounted systems can typically handle the cooling load for one or two rooms and there can be more than one indoor unit hooked up to the same outdoor compressor, allowing you to cool your entire house in this way.

What makes mini splits attractive to many people is the fact that they do not require the installation of complicated ductwork to function. If your home does not already have ducts in place, adding them can dramatically increase the cost of putting in a central air conditioning system. Plus the work will take longer and is likely to be a larger disruption in your life.

Putting in the refrigerant lines for a mini split system, on the other hand, is much easier and cheaper. Plus, refrigerant lines can often reach into places that larger ductwork cannot. This allows you to provide air conditioning to parts of your house that previously did not have access to it. Also, mini split systems allow you to control the temperature in the various areas of your house independently of one another, making it possible to save quite a bit on your cooling bills every month.

Tags: mini split, Montgomery County, New Britain, Solebury
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Ice in Central Air Conditioning: Why Is This a Problem?

Wednesday, June 8th, 2011

If your air conditioner does not seem to be working as well as it should, your natural first reaction is to go out and take a look at the compressor to see if there is anything you can do quickly to correct the problem. Of course, you cannot assess the situation unless you know what you are looking for. For instance, if you see ice forming on the condenser coil or anywhere else on the air conditioning system, you will know you found the likely source of the problem.

Ice can form in your air conditioner for a number of reasons. The most common one is that your refrigerant levels are low. Since this refrigerant is contained in a closed system, a deficiency in refrigerant means that there must be a leak somewhere in that system. Only a certified professional can refill your refrigerant and determine where the leaks are in the system to make the necessary repairs.

Another reason that ice can develop in your air conditioner is because the air is not flowing fast enough through the system and across the coils. This can happen because of a problem with the fan or because there is an actual physical impediment to the air flow. Regardless of the reason, the ice will form because without adequate air flow the condenser coils will get too cold.

These coils are typically kept just above freezing by the constant flow of air across them. When the air passes by them at this temperature, the moisture from the air condenses on the surface of the coil. But because the coil is not quite freezing, the water then runs down into a collection pan. When the coil is too cold, however, the moisture from the air will freeze on the coil before it can run off.

This ice actually manages to insulate the coil and keeps it from properly cooling the air or removing any additional moisture. If left unattended, the ice in your central air conditioning system can cause real damage to the unit. Plus, it is not allowing the air conditioner to do its job and cool your house down. So if you notice any amount of ice at all beginning to form on any part of your air conditioner, be sure to call for professional service right away.

Tags: air conditioner ice, Bucks County, Pipersville, Spring House, Warminster
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How to Stay Affordably Cool This Summer

Monday, June 6th, 2011

Putting in a high quality, energy efficient air conditioning system is a great step to take when you are trying to keep your house cool and comfortable all summer without paying a fortune in cooling costs. Many of the latest air conditioners are able to use very little energy to provide powerful cooling power to your house no matter how big it is.

But if you are really serious about keeping cool and keeping costs down, there are plenty of other things you can do to give your air conditioning system a hand. It might seem silly, but putting in a little bit of effort around the house can save you quite a bit in the long run.

For instance, since you are paying to keep the air in your house cool, it is a good idea to make sure that the air you are cooling stays in your house. Sealing off unused doors and windows with plastic is an excellent precaution to take to ensure that no cooled air leaks out through the cracks and door jambs. Also, you will want to check for any other openings that could create a draft and allow cool air to escape or warm air to get in.

However, just letting in air from outside in the summer is not the only way that the heat can get in. The sun is powerful in the summer and the more you can block of it, the cooler your house will be. So make sure that your blinds are closed to block out the sun, particularly in the afternoon. Morning sun is not nearly as powerful as the sun you get towards the middle and later part of the day.

All of these steps will help to take the pressure off of your air conditioning system and allow it to get its job done with a minimum of energy expended. And that will certainly save you money every month. You can save even more, though, by adjusting the temperature on your thermostat a bit as well.

Most air conditioning systems are set to a default temperature of 72°F. While this is probably quite comfortable for you, it is likely that you would be equally as comfortable at 75°F. In fact, you probably will not even notice the difference. But that small adjustment can actually save you quite a bit on your monthly cooling bills.

Tags: Point Pleasant
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How Do I Find the Right Size Unit for My Room?

Friday, June 3rd, 2011

When buying an air conditioner, there are a lot of things you need to take into account. One of the most important is the size and power of the unit you choose. Air conditioners come in many different sizes, so if you really want to get the most out of your purchase, you need to do your research and pick one that fits your home like a glove.

Square Feet and BTUs

The best way to determine how large of an air conditioner you need is to match the number of BTUs the unit has to the square footage of the room you want to use it in. That means you need to know what room you’re buying it for before you make your purchase.

The number of BTUs needed goes up proportionately with the room size, so even if you don’t have exact measurements or if your room is oddly shaped, you can get a good idea of how large an air conditioner you need. For instance, a 400 to 550 square foot room is best served by an air conditioner with between 8,000 and 11,000 BTUs, while a room that’s only 250 square feet would probably be fine with a 6,000 BTU unit.

Bigger Isn’t Always Better

One of the most common mistakes people make when buying an air conditioner is to assume that the bigger the unit the better it will work. The truth is that buying an air conditioner that’s too big for your room is just as much of a waste as buying one that’s too small.

A larger air conditioner will cost more, and it will probably make the room too cold. It will also cycle on and off more frequently than a properly sized unit and it won’t be able to properly control the humidity level, leaving you with a cold, damp environment. That’s not very comfortable.

Other Factors

The square footage is definitely the most important piece of data you’ll need before buying a new air conditioner for any room in your house. But don’t forget to take some other factors into account as well. For instance, if the room has particularly high ceilings or receives a lot of direct sunlight, you’ll probably need a slightly more powerful unit than the straight square footage would indicate.

If you’re not sure how certain features of your home will impact your buying decision, call a professional who can help you get a more exact idea of what it will take to stay cool.

Tags: Bucks County, Perkiomenville, Red Hill, Schwenksville
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What Features Should I Look for When Buying an Air Conditioner?

Wednesday, June 1st, 2011

There are so many different types and styles of air conditioners on the market these days, it can be difficult to figure out what features are worth paying attention to when it comes time to buy one for yourself.

Of course, the most important thing to do is make sure you get an air conditioner that’s appropriately sized for the space you’re trying to cool. But what should you look for beyond that? Here are a few features you might like to have on the unit you purchase:

Energy Efficiency – The more energy efficient your air conditioner is, the less your cooling costs will be. It’s as simple as that. So when you’re evaluating devices, remember that it’s worth paying a little bit more up front for a more energy efficient unit. It will save you money in the long run and you’ll be doing your part to help the environment.
Dehumidification – Just about every air conditioner controls humidity to a certain extent in addition to cooling. But some do this better than others. There are also air conditioners with separate dehumidification settings for those days that are more humid than hot. Even when you need both cooling and dehumidification, it’s nice to have control of each of these independently.
Timer – Being able to program your air conditioner to switch on and off at different times of day is more than just convenient; it will save you money. You don’t want to leave your air conditioner running all day when you’re not home, but it sure is nice to come home to the comfort of an air conditioned space. If your air conditioner has a timer, you can have both. Just set the unit to come on a half hour or so before you get home and you’ll enjoy cool, refreshing indoor comfort right when you get home without paying through the nose to keep your home cool when no one is there.
Easy-to-Use Controls – As simple as this one seems, you might be surprised at how inconvenient the controls on some air conditioners can be. So when you’re evaluating your options, make sure you research how easy each unit is to operate. This can definitely save you from plenty of frustration in the long run.

Air conditioners come in many different shapes and sizes. To make sure your decision works best in your home, do your research well in advance. When the summer heat kicks in, you’ll be glad you did.

Tags: Lansdale, Montgomery County, Oreland
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How Do I Check for a Dirty Evaporator Coil?

Monday, May 30th, 2011

The evaporator coil is an essential piece of your air conditioning system. It absorbs heat from air that passes over it, and that air then travels into your home to cool it. So if your coil is dirty or isn’t functioning properly, the cooling power of your air conditioning system is diminished. Fortunately, this problem is fixed easily by cleaning the evaporator coil. You can do this on your own or have a professional come in to take care of it.

Signs of a Dirty Evaporator Coil

The most obvious sign of a dirty evaporator coil is an overall drop in system pressure. As long as you know what constitutes a normal pressure for your system, you should be able to tell if the current pressure is below that level. If it is, a dirty evaporator coil is probably your culprit. You can also check the static pressure in your system to see if that is low, but this requires specialized equipment.

Even if you don’t notice any particular signs that your air conditioning system isn’t working properly, it’s a good idea to clean your evaporator coils once a year or so. This can help prevent any larger problems from developing in the future.

Finding Your Coil

Probably the hardest part of cleaning an evaporator coil is reaching it. Unlike your condenser coil, which is located in your outdoor condenser unit, the evaporator coil is found inside near the air handler or furnace. If you have the owner’s manual, there should be detailed instructions telling you where the coil is and how to safely access it.

Alternately, you can have an HVAC technician show you what to do the next time they come out to work on your system. Whatever you do, though, make sure that power to your AC unit is completely shut off before you start working on it. Once you’ve gained access to the coil, use a brush or vacuum attachment to remove any debris or sediment you find there.

The Importance of Maintenance

Cleaning your evaporator coil is only one part of the regular maintenance required to keep your air conditioning system in good working order for the foreseeable future. There are plenty of things you can do on your own, but it pays to have a professional come out once a year or so to check out the entire system and make any necessary repairs.

Tags: Evaporator Coil, Hilltown, Holicong, Jamison
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Freon and Load Capacity – How Are They Linked?

Wednesday, May 25th, 2011

If you’re like most people, you probably don’t think too much about how your air conditioning system works. All you really need to know is that when you switch on the system, your house gets cooler. But if you’re looking to purchase a new air conditioner for your home, it’s a good idea to know how to select the right one to fit the space you’re trying to cool.

Air Conditioning Basics

Air conditioners use Freon as a coolant to remove heat from indoor air and transfer that heat outside. To do this, they cycle the Freon through a closed loop of coils. When the cold Freon enters the cooling coil of the air conditioner, it absorbs heat from the air passing by, thereby lowering the temperature of the air. That cooled air can then be transferred into your home and more warm air can be cycled past the cooling coils.

Air Conditioner Sizing

The more air your air conditioner can cool at once, the larger its load capacity. In order to keep a particular space cool, an AC unit has to have a large enough load capacity to accommodate that type of air volume. A unit that’s too small will obviously never be able to keep your room cool enough, but one that’s too big will have a similar problem.

The truth is that when it comes to air conditioner sizing, bigger is not better. It’s best to simply get as good an estimate as you can of what type of load capacity is ideal for the space you’re trying to cool and stick as close to that as you can.

Load Capacity and Freon

Of course, if you want your air conditioner to cool more air at a time, you’ll need more coolant. But simply increasing the amount of Freon in your air conditioner won’t make it cool any better. Freon is simply one of many elements that contribute to effective cooling. And the larger the entire system is, the more Freon is needed.

So more Freon technically contributes to greater cooling capacity, but it’s not enough to accomplish that all on its own. There is really nothing you can do to increase the load capacity of your air conditioner once it’s in place. So for best results, make sure you pick out an appropriately sized unit the first time around.

Tags: Dresher, Flourtown, Franconia, Freon, Load Capacity
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What Is SEER?

Friday, May 6th, 2011

If you’ve been looking at air conditioners, you’ve probably noticed that they all seem to have a SEER rating. But what does this actually mean?

The SEER, which stands for Seasonal Energy Efficiency Ratio, is a measure of how energy efficient a particular air conditioning model is. So when you’re shopping around for the best deal on an air conditioner for your home, this is something you’ll absolutely want to pay attention to.

Interpreting SEER Ratings

The SEER rating system is relatively simple – the higher the SEER, the more energy efficient the product. But because a higher price tag typically comes with a higher SEER rating, it’s important to know just how much more efficient a higher rated unit will be. It helps you decide whether paying significantly more for a higher rated unit is worth it in long term savings. Will it actually save you enough each month to make up for the difference in price?

Evaluating Your Energy Usage

A big factor here is how much you will use your air conditioner. If you live in a place with very hot and humid summers where the air conditioning runs constantly, you’re probably best off with the highest SEER you can find. When you consume that much energy to keep your home cool, you want to get as much as possible out of it, and that’s what a high SEER model can do for you.

On the other hand, if you live in an area that doesn’t have the harshest summers, you may be better off with a slightly less efficient (and therefore cheaper) model. Keep in mind, too, that the actual percentage increase in energy efficiency goes up by smaller and smaller increments the higher in SEER ratings you get. For instance, while a 10 SEER unit may be almost 20% more efficient than an 8 SEER model, a 12 SEER is only about 10% more efficient than that 10 SEER.

Finding the Right Balance

The best way to decide what SEER rating is best for you is to determine the annual cooling costs with your current unit and then calculate your savings in dollars based on the percentage each model would improve your efficiency. If you don’t currently have an air conditioner, this can be a bit tricky, but a professional contractor or air conditioning salesman can help you estimate your total monthly cooling costs with the various units.

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2011 AC Federal Tax Credits

Wednesday, May 4th, 2011

You’ve probably heard many arguments for why you should purchase an energy efficient air conditioner. They may cost a bit more up front, but they’ll save you money in the long run by cutting down on your monthly energy bills. They’re also better for the environment because their lower energy usage means less fossil fuels are burned to keep them running.

But there’s another reason energy efficient AC units are better buys than your standard alternative. There are Federal tax credits available to consumers who purchase them. This tax credit can more than make up for the higher purchase price of the units, allowing you to enjoy your monthly savings much sooner and know you’re doing your part to protect the environment.

How to Qualify

In order to qualify for 2011 air conditioning Federal tax credit, you need to purchase an appropriate energy efficient AC system. Your HVAC contractor or salesperson can tell you which models and units qualify for this program. Just make sure you save all documentation and proof of purchase in case you need them to validate your claim.

The AC units that qualify you for this tax credit include those with a SEER (seasonal energy efficiency ratio) of 16 or greater and an EER (energy efficiency ratio) of at least 13. These two numbers are the best and clearest indicators of the overall energy efficiency of the product and can easily be found on the packaging for any air conditioning unit. While a 16 SEER is very good, it is not the highest rating currently available, either, so you won’t be forced to buy the most expensive model available to get your credit.

Credit Details

The tax credit is good for up to 10% of the purchase price of the unit up to $300. Keep in mind, though, that you can only claim up to $500 lifetime towards this program. So if you’ve previously claimed $250, you can only claim an additional $250 for 2011. That’s still a significant savings, though, and well worth looking into if you’re in the market for a new AC unit or system.

So if you’ve been thinking about upgrading your AC system, but haven’t quiet gotten around to, now may be the time to take advantage of this great tax credit opportunity before it’s too late.

Tags: Red Hill
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Mechanical or Forced Ventilation v. Natural Ventilation

Monday, May 2nd, 2011

Just about everyone can agree that effective ventilation is essential to maintaining a healthy indoor living environment. But exactly what does this entail? There are quite a few ways to circulate air throughout your home, and each method is appropriate for a specific situation.

Benefits of Natural Ventilation

Natural ventilation, of course, can be achieved simply by opening a window. But there’s actually a lot more to it than that. If you really want to ventilate your home through natural means, then you’ll have to learn to take advantage of the differences in pressure in different areas of your home.

One way to do this is to use cross ventilation. This means opening windows or doors on both sides of your home and allowing the outdoor air to blow through, carrying stale, indoor air out the other side. A more sophisticated version of this is stack ventilation.

In a two-story home, stack ventilation can be achieved by opening the windows on the bottom floor on one side of the house and on the top floor on the opposite side. Because of the differences in outdoor air pressure, air will be sucked in through the lower floor windows and out through the upper ones.

Why Natural Ventilation Is Not Always Practical

These types of natural ventilation can be extremely effective when it comes to both cooling an indoor environment and removing indoor air contaminants. Unfortunately, allowing outdoor air inside unimpeded allows outdoor contaminants easily as well.

On particularly hot or humid days, natural ventilation can’t reduce the indoor temperature enough to make it comfortable indoors. While a light breeze is enough to take the edge off on a moderate spring or summer day, more is needed when the weather is extreme.

Types of Mechanical Ventilation

When you think of mechanical ventilation, you probably jump right to large central air conditioning systems. But that’s certainly not the only type of effective mechanical ventilation available. In fact, mechanical ventilation can be performed by just about any type of fan on the market, and while operating a fan is certainly more expensive than opening a window, it’s still much more affordable than running an air conditioner all day long. Fans can also be used in combination with natural ventilation to achieve better results than either system could on its own.

Tags: Fountainville
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