Design Comfort Blog: Archive for April, 2011

Save Money When Using Appliances and Home Electronics

Friday, April 29th, 2011

As you are looking around your home for ways to save money on electricity, it is only natural to linger on the big things like your heating and air conditioning systems. However, there is also a lot to be saved in other areas if you know where to look and how to go about cutting back. Both the type of appliances that you buy and the way that you use them will directly impact your total electric bill every month, so it is certainly worth paying attention to what you are doing and what you could do better.

For one thing, it is almost always worth it to go with an Energy Star certified appliance whenever possible. It does not matter if it is a coffee maker or a washing machine. Every little bit helps and so you will be setting yourself up for much lower electric bill over time when you figure total energy usage into all of your purchases.

Using power strips is also a great way to make saving on electricity easy. No matter what you do, many appliances will draw a small amount of power even when they are switched off. So as long as things like your laptop, TV and toaster are plugged in, they are draining energy whether you are using them or not.

Of course, you could just go around and unplug everything you are not using, but that can get pretty tedious. Plugging these types of appliances and home electronics into a power strip makes it easy to just cut their power supply completely when you do not need them. And switching them back on again is just as easy. You do not even have to go crawling around on the floor looking for the plug.

There are certainly many items that you cannot or do not want to unplug or completely cut the power to at any time. For appliances and electronics that fall into that category, simply make sure you turn them off completely when they are not in use. Many home electronics will automatically switch to a standby mode rather than shutting down completely and it is easy to forget they are still on. However, you will save a lot if you make sure to shut them down completely when they are not in use.

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LEED Accreditation – What Is It, and How Can I Get It for my Home?

Wednesday, April 27th, 2011

LEED (Leadership in Energy and Environmental Design) is an internationally-recognized green building rating system based on standards developed by the U.S. Green Building Council (USGBC).

The LEED system is voluntary and offers homebuyers third-party verification that a home is sustainable, water efficient, and energy-saving; is designed to conserve construction materials and reduce pollution; and has clean indoor air.

Homes that are candidates for LEED accreditation are rated on a 100-point scale. The home must satisfy all minimum requirements and earn a minimum number of total points. Key areas of evaluation include:

  • Sustainability of Building Site. The home’s impact on ecosystems and waterways must be minimized, as must erosion, light pollution, and construction-related pollution.
  • Water Efficiency. The home must have water-efficient appliances and fixtures and regionally appropriate landscaping.
  • Energy and Atmosphere. The home must have energy-efficient design, appliances, systems, and lighting. More points are awarded for use of clean and renewable energy and other innovative strategies.
  • Materials and Resources. The home must use sustainable materials, and construction and operating waste must be minimized.
  • Indoor Environmental Quality. The home must have high indoor air quality, good indoor acoustics, and access to natural daylight and views.
  • Locations and Linkages. The LEED standard promotes building in previously-developed, “infill”, or “brownfield” sites and away from undeveloped and/or environmentally-sensitive sites. Points are also awarded for building near existing retail and transit infrastructure and outdoor recreation areas.
  • Awareness and Education. Home builders are encouraged to teach new homeowners about the green features of their home so that they can be maximally utilized.
  • Innovation in Design. Points are awarded for home design that is innovative and goes “above and beyond” existing LEED requirements, and for including a LEED certified professional on the design team.
  • Regional Priority. Bonus points are awarded for taking into account the regional environmental concerns that have been identified by USGBC’s regional councils.

LEED accreditation doesn’t just make sense from an environmental standpoint. It also makes good financial sense:

  • LEED accreditation offers great ROI for new construction – some studies have shown that an upfront investment of 2% in green building design can result in long term savings of 20% on total construction costs.
  • LEED-certified homes generally have lower operating costs.
  • LEED-certified homes are more attractive to buyers and renters (according to studies, commercial LEED-certified buildings have higher occupancy rates, higher rent-per-square foot, and higher per-square-foot sale prices than comparable non-LEED buildings).
  • LEED certification may provide some protection against indoor air quality lawsuits.

LEED accreditation can only be granted to new construction or major remodeling projects. To apply for LEED accreditation, contact a LEED for Homes Provider organization in your area. The LEED for Homes Provider organization will work with your builder to ensure that your home qualifies and will guide you through the accreditation process.

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The Energy Efficiency Rating of Central Air Conditioners: What Is it and Why Is it Important?

Monday, April 25th, 2011

When you are shopping for a central air conditioning system, 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.

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What Is a Whole House Pressurization Test and Should I Get One?

Friday, April 22nd, 2011

If you have a forced air heating or cooling system in your home, you also have a system of ducts through which that heated or cooled air circulates. And most people don’t give a second though to those ducts. After all, if your heating and cooling systems are working, the ducts must be doing their job, right?

Unfortunately, that’s not always the case. If ducts are not working properly, the whole system will be in trouble, even when you don’t realize there is a problem. That’s why a pressurization test is so important – it provides peace of mind knowing that your home’s ductwork is not only properly installed, but that it doesn’t need any special repairs.

Why Pressure Matters

Your duct system depends on proper pressurization to evenly and efficiently distribute air throughout your home. Leaks, cracks or clogs in the system can disrupt that pressure and lead to uneven or inadequate movement of air through your ducts. This causes problems you may not notice, so if you haven’t had your ducts checked for proper pressure in a while, it’s worth looking into.

Improper pressurization causes symptoms like hot or cold spots in your home or an overall drop in the effectiveness of your home heating and cooling system. When loss of pressure is due to a leak that lets in unfiltered air from outdoors it can also lead to a decrease in indoor air quality. Often these symptoms are easy to ignore. But by doing so, you only allow the situation to get worse.

A whole house pressurization test is the best way to determine the state of your home duct system. By using high tech diagnostic equipment, home HVAC professionals check over your entire system to determine whether you have a pressurization problem. If so they can then quickly pinpoint the source. Once that’s done, the repairs are usually quite simple and you’ll get much more out of your home heating and cooling system than you did before.

Even if no symptoms of improper pressurization in your ducts have presented themselves, it’s worth having one of these tests performed. Especially if you don’t know when the system was last checked, a whole house pressurization test can help uncover small problems before they turn into bigger ones. And the peace of mind this provides is well worth the day it takes to perform the test.

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Save by Caulking Crevices and Penetrations

Wednesday, April 20th, 2011

They are nothing to be ashamed of. Really, everyone has them. You know – those little cracks and crevices that you always mean to get around to caulking but just have not found the time for yet. But they are so small, they cannot possibly be causing that many problems, right?

Well, not exactly. In fact, any small space that can let air in or out of your house could be costing you money – and a considerable amount too. The truth is that, next to inadequate insulation, leaks and drafts are some of the biggest drains on your home heating and cooling system.

After all, you are paying to heat or cool the air inside your house in order to keep the indoor environment comfortable all year round. But you do not want to be paying more than you need to be. That is why you bought the high efficiency HVAC system in the first place. If you have lots of drafts and cracks in various places throughout your house, however, you are almost certainly spending more than necessary to keep your house comfortable.

And the solution is so simple. You do not need to go out and spend a ton of money on an even more expensive heating and cooling system. All you really need to do is make sure that your home is sealed up as well as possible. And that means sealing up all of the cracks.

Caulking is an extremely effective way of doing this, and it costs very little, particularly if you take on the job yourself. But even if you hire a professional, the amount that you have to pay out will be returned to you many times over in savings on your monthly heating and cooling bills. There simply is no substitute for sealing up your house tight when you are trying to save money on heating and cooling costs.

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The Energy Star Label

Monday, April 18th, 2011

The Energy Star program is a joint program of the US environmental protection agency and the US department of Energy. The program’s goal is to help consumers save money and protect the environment through energy-efficient products and practices.

The best-known aspect of the Energy Star program is the Energy Star label, which is awarded to appliances and other items that are significantly more efficient than average. Energy Star efficiency guidelines vary depending on product category, but in general, Energy Star products use 20%-30% less energy than minimum federal standards.

The Energy Star guidelines were designed both with energy efficiency and performance in mind. While low energy use is one of the most important criteria for selecting Energy Star appliances, product performance, features, warranty, safety, and durability are also taken into account. Price is also a factor: if a product costs significantly more than other products in its category, it will only receive the Energy Star label if the up-front cost will be recovered through savings in operating costs within a reasonable amount of time.

The first Energy Star labels were given to computers and monitors in 1992. Now labels can be found on many other products, including:

  • Furnaces
  • Hot water heaters
  • Air conditioners
  • Dishwashers
  • Refrigerators
  • Light bulbs (florescent and LED)
  • TVs

Energy Star products can be found wherever appliances and electronics are sold. Look for the blue and white Energy Star label. You can also look for the yellow EnergyGuide label that is affixed to most heating and cooling systems and household appliances. This label is created by the Department of Energy and shows a product’s annual cost of operation compared to similar models. It will often indicate whether a product is Energy Star.

It’s important to note that while an Energy Star label indicates that a heater, air conditioner, or household appliance is more efficient than the minimum guidelines, it does not always mean that you are getting the most energy efficient option on the market. If you are making a major appliance purchase, use the Energy Star label to be sure every model on your “short list” is energy efficient. Then, look carefully at the EnergyGuide label to compare the efficiency of the models you are considering.

The EPA has also extended the Energy Star label to cover new homes and commercial and industrial buildings. To qualify for the Energy Star rating, a new home must use at least 15% less energy than standard homes (built to the 2004 International Residential Code). Energy Star homes usually include insulation, high-performance windows, energy-efficient heating and cooling systems, appliances, lighting, and water heaters.

The Energy Star standards and label have been recognized in many other countries, including Canada, Australia, Japan, New Zealand, Taiwan and the European Union.

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The Advantages of an Air Conditioning System

Friday, April 15th, 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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What Is a Whole House Pressurization Test and Should I Get One?

Wednesday, April 13th, 2011

If you have a forced air heating or cooling system in your home, you also have a system of ducts through which that heated or cooled air circulates. And most people don’t give a second though to those ducts. After all, if your heating and cooling systems are working, the ducts must be doing their job, right?

Unfortunately, that’s not always the case. If ducts are not working properly, the whole system will be in trouble, even when you don’t realize there is a problem. That’s why a pressurization test is so important – it provides peace of mind knowing that your home’s ductwork is not only properly installed, but that it doesn’t need any special repairs.

Why Pressure Matters

Your duct system depends on proper pressurization to evenly and efficiently distribute air throughout your home. Leaks, cracks or clogs in the system can disrupt that pressure and lead to uneven or inadequate movement of air through your ducts. This causes problems you may not notice, so if you haven’t had your ducts checked for proper pressure in a while, it’s worth looking into.

Improper pressurization causes symptoms like hot or cold spots in your home or an overall drop in the effectiveness of your home heating and cooling system. When loss of pressure is due to a leak that lets in unfiltered air from outdoors it can also lead to a decrease in indoor air quality. Often these symptoms are easy to ignore. But by doing so, you only allow the situation to get worse.

A whole house pressurization test is the best way to determine the state of your home duct system. By using high tech diagnostic equipment, home HVAC professionals check over your entire system to determine whether you have a pressurization problem. If so they can then quickly pinpoint the source. Once that’s done, the repairs are usually quite simple and you’ll get much more out of your home heating and cooling system than you did before.

Even if no symptoms of improper pressurization in your ducts have presented themselves, it’s worth having one of these tests performed. Especially if you don’t know when the system was last checked, a whole house pressurization test can help uncover small problems before they turn into bigger ones. And the peace of mind this provides is well worth the day it takes to perform the test.

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Maintenance: Why You Should Have Your Furnace Serviced Every Heating Season

Monday, April 11th, 2011

Particularly if you’ve just purchased a new furnace, it’s probably not something you think about all that much. As long as it works when you need it to, that is. Unfortunately you usually find out that something is wrong with your furnace just when you need it most. However, there is a way to avoid that kind of problem, and many others, and that’s to have regular maintenance service performed on your furnace by a home heating professional every year.

One of the main reasons to have your furnace serviced is that it allows technicians to catch small problems before they become large ones. During a typical maintenance visit, a technician will examine all parts of your furnace to ensure that they are still in good working order. He’ll also thoroughly clean out the unit to make sure there are no buildups of debris that could cause problems or impede the furnace’s energy efficiency.

And if they do find something wrong like a part that’s beginning to wear out or something that just isn’t working properly, the technician can make the necessary repairs right away. You can get the problem taken care of ahead of time and you won’t have to worry about going without heat during the coldest part of the winter.

That’s not the only reason that annual maintenance is important and beneficial, however. It can also help you save money, both on your monthly energy bills and in the long term. That’s because annual maintenance tune ups keep your furnace functioning at peak efficiency levels longer than they would be able to otherwise.

A typical furnace will lose a small percentage of its energy efficiency every year, and while it won’t seem like a lot at first, that can really add up over the course of a couple of years. With regular maintenance, though, you can often maintain up to 95% of your furnace’s original efficiency for the life of the furnace.

Plus, when the proper maintenance and service is performed on a regular basis, your furnace will simply last longer. Most furnaces purchased now will last between 10 and 15 years, and with proper care, you can help to ensure that your furnace reaches the upper limit of this span or even beyond.

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How Efficient Is a Heat Pump?

Friday, April 8th, 2011

Heat pumps are actually remarkably efficient when compared to some of the home heating alternatives out there. Especially if you’re already using electricity to heat your home, you can get generate huge savings on your monthly energy bills by switching to a heat pump system.

As their name suggests, heat pumps remove heat from the air and transfer that heat from one area to another. That means that in the winter, your heat pump will remove the heat from the air outside your home and pump that heat in to heat your home. During the summer months, that process is actually reversed, and heat pumps are able to cool your home by collecting the heat from your indoor air and pumping it outside.

Since heat pumps are actually just moving heat from one place to another rather than generating it all on their own, they don’t require much energy at all to operate. While you can buy furnaces that are as much as 97% energy efficient, they’re still using more energy than a heat pump would. The fact that the furnace is turning the vast majority of the energy that it uses into heat doesn’t mean that it still doesn’t require more energy to operate.

Just because heat pumps are more efficient than many other types of heating systems, you can’t just assume that all heat pumps are equally energy efficient. Just as different types and models of furnaces have different energy efficiency ratings, so too do the many types, sizes and models of heat pumps. Make sure you thoroughly compare your options before you settle on the right system for your home.

The energy efficiency rating of a furnace is easy to recognize, as each of them comes with a standard AFUE rating. If you’re looking to switch to heat pumps, however, it’s easy to get confused when you’re trying to compare the energy efficiency of various models.

Heat pumps actually have two separate measurements for energy efficiency. These are the seasonal energy efficiency ratio (SEER) and the heating seasonal performance factor (HSPF). Energy efficiency measurements for heat pumps reflect both the cooling and heating efficiency of the system, and so what’s best for you may vary depending on what you’re more likely to use your heat pump for.

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