Boehmer Heating & Cooling Blog: Archive for the ‘Air Conditioning’ Category

What Can You Do Yourself if Your Central AC Unit Does Not Work? When Should You Call a Professional?

Wednesday, June 8th, 2011

If your air conditioning system suddenly stops working or is not keeping your house as cool as you think it should, the chances are good that you will have to call in a professional to make the necessary repairs and get you back on track. However, there are a few things you can do on your own before you make that call to ensure that this really is something you cannot take care of on your own.

While it may seem obvious, the first thing you should check is the thermostat to make sure that it is set to a temperature that will trigger the air conditioning to come on. If your thermostat for some reason is set too high, then the air conditioner will not receive the signal to start cooling the house. This is an easy fix, of course, and you will be back up and running in no time.

If the thermostat is indeed set where it should be, the next thing to check is the air filter. Most people with central air conditioning know that they should change the filter once every month or so, but this seldom actually happens.

If it has been a while since your air filter was changed, there is a good chance that it is clogged and therefore blocking air from circulating from the air conditioner through the rest of the house. This is an easy enough fix, as all you need to do is replace the current air filter and your system should be able to pick up right where it left of. However, if the blocked air filter has also caused ice to form behind it, you may have to wait for a couple of hours until the ice has a chance to thaw.

Next, you will want to check and make sure that the air conditioning system is actually getting power. Look to see if any of the breakers are tripped or if there may have been a current interruption for any other reason that is within your power to fix. If this is the case, though, it is a good idea to turn the air conditioning system off before you attempt to restore the power.

If none of these measures are able to get your air conditioning system up and running again, you should not hesitate to call a professional. Many air conditioning repairs are quite basic, but they still need to be performed by a licensed professional.

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What Is the Energy Star Label?

Monday, June 6th, 2011

Any time you go out and buy any type of appliance, you probably notice that some have a distinct mark that signifies them as Energy Star appliances. That sounds like a good thing, of course, but what does it actually mean? Should you always buy an Energy Star model over another type?

The Energy Star label was originally developed to help consumers more easily recognize appliances that are more energy efficient than the average. In order to obtain an Energy Star seal of approval, any device must meet very strict guidelines when it comes to energy efficiency.

What that translates into for you as a consumer is a lower monthly energy bill when you buy Energy Star appliances. Of course, once they have obtained an Energy Star labels, manufacturers can charge whatever they want for their product, and it is not unusual to pay more for a model that is certified an Energy Star.

However, as long as the potential savings over time that you will get by using the Energy Star model as opposed to one that is not as energy efficient outweigh the difference in initial purchase price, it is worth it to spend a bit more on the Energy Star model.

Keep in mind, though, that just because a produce meets the Energy Star guidelines for energy efficiency does not necessarily mean that it is a superior product in terms of quality or overall effectiveness. Plus, not all Energy Star appliances are created equal. You should still do your research and pick out the product that will both save you the most money and has the best chance of getting the job done right.

Another benefit to Energy Star products is that, because they use less energy when they run, they also have a smaller impact on the environment than a model that uses a greater amount of energy to perform the same tasks.

Overall, it is definitely worth taking a closer look at all of the Energy Star options out there when you are purchasing an air conditioning system or any other type of appliance. Using less energy is always a good thing both for your bank account and for the planet. But you also want to make sure you are actually getting the best product for your money.

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Air Conditioners and Humidity

Friday, May 6th, 2011

Ever wonder why all of those air conditioners hanging out of people’s windows are constantly dripping water on hot summer days? All they’re actually doing is disposing of the moisture they’ve removed from the indoor air. That’s right – air conditioners are dehumidifiers too.

When you think about it, it makes a lot of sense. After all, you know how much more uncomfortable 90° is when the humidity’s up around 90% than when it’s closer to 60%. Of course, some air conditioners are better at removing moisture from the air than others, so you should definitely consider how well an air conditioner dehumidifies when evaluating your air conditioning options.

Why Humidity Matters

High humidity, even at lower temperatures is uncomfortable. But there are more reasons than simple comfort to want an air conditioner that reduces indoor humidity levels. For instance, high levels of humidity promote the growth and spread of several allergens like dust mites and mold spores. High indoor humidity can also cause problems for the wood fixtures and furnishings in your home.

The Importance of Proper Sizing

Most air conditioners do a decent job of controlling humidity indoors. But depending on the severity of your problem and the typical levels of humidity in your area during the summer months, you may want to pay special attention to each unit’s capabilities when evaluating your options.

An air conditioner’s ability to maintain proper humidity levels indoors has a lot to do with how well it’s matched to the size of your room as well. An air conditioner that’s too small likely won’t get the humidity or the temperature down to a comfortable level. On the other hand, that doesn’t necessarily mean that bigger is better.

In fact, an air conditioner that’s too large for the space you’re using it to cool will have a hard time bringing down the humidity level. Sure, you’ll wind up with a cold room, but that room will remain damp, making it no more comfortable than it was before the air conditioner was turned on.

For all of these reasons, it’s important to carefully evaluate your options when buying an air conditioner and make sure that the unit you buy is the right kind and size for the area you’re cooling. A little extra time spent researching your options will make your home infinitely more comfortable this summer.

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What to Do if Your Ceiling Fan Does Not Work

Wednesday, May 4th, 2011

A ceiling fan is a great addition to your home. It can keep you cool all on its own on moderately warm days and it will help to take on some of the cooling load even on days when you do need to use the air conditioner as well. Plus, you can even use your ceiling fan in the winter to keep the warm air from your heating system circulating properly.

But just like anything else, your ceiling fan will encounter some sort of problem from time to time. While there are certainly some things that you cannot fix on your own, it is a good idea to check on a few items before you call in a professional repair person.

For instance, if you switch on the fan and nothing happens, make sure that all of the controls are in the place they should be. Most ceiling fans have a chain or dial on the body of the fan itself that controls the direction that the fan turns and can even turn it off. However, there is usually also a power switch on the wall. If you flip the switch and the fan does not turn on, there is a good chance that the setting on the fan itself is in the off position.

After ensuring that all of these switches and controls are calibrated properly, you can also take a look at the fuse and the breaker that the fan is connected to. If the breaker is thrown or the fuse is blown, the fan is not getting power and you will have to replace the fuse or reset the breaker to restore power to that circuit.

If that does not solve the mystery either, you may want to test the blades themselves to see if they seem to be stuck on a physical impediment. Ceiling fans do occasionally need to have their bearings lubricated and this is a relatively simple task that you can carry out on your own as well.

However, if none of these actions seems to solve the problem, then you will probably need to call in a professional to assess the situation and make the necessary repairs. There may be a mechanical problem within the fan itself or the wiring could be frayed or fused and these are not repairs you should attempt to make on your own.

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What Is a Chilled Beam System?

Monday, May 2nd, 2011

If you’ve been researching new ways to cool larger office or industrial spaces, chances are you’ve come across information on the chilled beam system. These systems are not suitable for residential use, but they can be extremely effective in other types of applications. They’ve been used more extensively overseas, but are rapidly gaining ground in the US.

How They Work

In a chilled beam system, cooled water is sent through pipes into a beam that runs across the ceiling of an area. The water chills the beam, which in turn passes that chill to the air in the room. As the air in contact with the beam cools, it also becomes denser and sinks, thereby making room for warmer air to rise from below and contact the beam. In this way, air is both cooled and circulated throughout the room.

Active vs Passive

Chilled beam systems are available in both active and passive implementations. Passive systems rely solely on the natural convection currents to circulate air and bring warmer air into contact with the beam. Active systems, on the other hand, make use of a central air handler and ducts to bring new air into contact with the beam and circulate air around the space to be cooled.

Passive systems, of course, use less energy than active ones, but their application is also more limited. Active chilled beam systems are still much more energy efficient than many other types of industrial or commercial cooling systems and they can be integrated into many more types of spaces.

System Advantages

Energy efficiency is certainly a very attractive feature of chilled beam systems, but they have several other solid selling points. For one thing, chilled beams operate extremely quietly because of their lack of moving parts. This also makes them much easier and cheaper to install and maintain. And because of the simplicity of their design, chilled beam systems don’t require that a large amount of space be devoted to a machine room or control center, making them an excellent choice when space is at a premium.

Limitations

Of course, chilled beam systems aren’t without their drawbacks. For one thing, these systems can cost quite a bit more than other more conventional systems because they must be imported from overseas. There is also a limit to how much cooling they can accomplish because if the temperature of the beam itself drops below a certain level, condensation will begin to form.

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Maintenance: Cleaning Your Conditioner Coil Will Save You Headaches Later

Monday, April 25th, 2011

You have plenty of things to clean all over your house. But do you really have to clean your air conditioner too? Well, if you want it to keep working well, you do. In fact, cleaning the coil of your air conditioner is a quick and easy process, especially if you do it on a regular basis, and it can save you a great deal of frustration later on.

Like any machine, your air conditioner needs a tune up from time to time in order to continue to function properly. While a lot of this is taken care of if you have an annual maintenance service performed by a professional, your air conditioning coil will benefit greatly by being cleaned more often than that.

In fact, during your annual maintenance visit, your air conditioning technician can easily demonstrate for you how to get to the coil and clean it. This is a relatively easy task that you can carry out every month or so when your system is in use to help ensure optimal health and functioning for your system.

Of course, your air conditioning system will still run whether you clean the coils on a regular basis or not. For now, that is. Allowing more and more debris to build up on the coil, however, can have a big impact on the overall energy efficiency of your unit. An air conditioner with a dirty coil will have to work harder to keep your house cool, and that will be reflected by an increase in energy consumption.

Also, an air conditioner with a dirty coil that is having to work harder to keep your house cool will wear out more quickly than one that is working properly without added impediments. The added wear and tear that this causes to various other parts within your air conditioner can cause them to malfunction and need to be replaced sooner than they should.

This means more costly repairs, even if they are minor ones. It also means that your entire air conditioning system will probably not last as long as it may have with proper care. You will have to replace it sooner, adding even more to the cost of having and running the equipment.

Cleaning your air conditioner coil regularly is a simple and effective way of helping to keep the entire system running smoothly and efficiently for many years to come.

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Different Types of Room Air Conditioners

Friday, April 22nd, 2011

If you are like most people, 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.

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