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Archive for the ‘Energy Efficiency’ Category

Green Building Increases Even Through Recession

February 2nd, 2010 by Melissa Doyle

American’s spent less on construction in 2009, $900 billion less in fact. The money that was spent, however, was directed toward energy efficiency. There were 4 times more LEED certified projects in 2009 than in 2007! With state and federal mandates to increase efficiency and incentives to go green, clients are pushing contractors to make their houses and office buildings more efficient, more green.
People are starting to see efficiency as the right thing to do, but that are also being forced to build efficiently due to increasingly strict building codes. Some communities take the mandates that are already set and make them stricter with stretch codes. These are codes that the state sets that are minimum levels of efficiency but cities are given room to increase these levels.
Some clients are leery about getting LEED certified. There is a 3-6% increase in cost to get certified, so a lot of people are building greener but they don’t pay the extra amount for the LEED certification. While we are at an all-time high for LEED certified projects, there may be many more that are LEED quality that just do not have the certification. Contractors are blaming the poor economy for clients not wanting to pay the 3-6% increase. When the economy rises again, we should expect to see even more LEED certified homes and businesses.

Tips For Buying A High Efficiency Boiler

January 25th, 2010 by Melissa Doyle

With winter only half way over, wouldn’t it be horrible if your water heater or boiler went out? If your boiler is getting on in years, you may want to start researching buying a new one. Here are a few things to look for before you buy.
Boilers rated over 90% efficient are called condensing boilers and are designed to extract heat from the combustion of gasses that’s normally lost in regular boilers. This only saves energy under the right conditions. Condensing boilers are designed to work with water 135 degrees Fahrenheit and below. If the water temperature is higher than 135 degrees, your high efficiency boiler is really only about 80% efficient. To control this, make sure to look for a boiler with a control system so you can adjust the water temperature according to indoor and outdoor temperatures. These are called weather responsive controls or outdoor reset controls. Some boilers are automatically sold with these controls while others have them as an optional feature. Beware of the boilers that don’t offer some sort of temperature control, you may be losing efficiency! This feature can not only save 15-20% on your heating bills, but also help provide a constant, steady flow of heat through your house.
Another thing to look at is the material the heat exchanger is made out of. Stainless steel is better at heat transfer and is longer lasting than aluminum. Some companies are not even making aluminum heat exchangers anymore.
Paying attention to these two small details when boiler shopping will increase your boiler’s efficiency and life span as well as save you some money.

A New Energy Saving Gadget For Your Home

January 18th, 2010 by Melissa Doyle

Energy companies have come to realize that regular, every day people don’t sit around thinking about their energy usage on a day to day basis. You may think about keeping appliances turned off when not in use, but you don’t keep track of exactly how much energy you are using at any given time. You don’t want to deal with smart meters, websites, or programmable thermostats to manage your energy. So, companies like Direct Energy have been working on electricity use monitors that are essentially iPhones for your home. You can use them to check email, weather, and traffic reports, download movies and recipes, play video games, and keep track of your energy usage. This monitor will be able to automatically shut off appliances during peak hours where electricity is more expensive and then turn them back on later in the day when prices fall again, which will ultimately make peak energy pricing lower. There is less demand at any one time in the day, so the price of energy will even out. Manufacturers are hoping this will lead to a new pricing scheme for electricity that will work like cell phone plans. You will be able to pick a plan with a set amount on energy per month for a set fee and then use your monitor to make sure you are staying on track with that plan.

Tips To Help Renters Save Money

January 14th, 2010 by Melissa Doyle

Here at AC Doctor we are always trying to find ways to help you save money and energy, but the tips we give are for home owners. What about renters? Renters have to be very careful about any modifications they make. Any change to the house could break the terms of the lease. Fear not, there are some things you can do! There are small changed that will impact your energy bill that you do not need permission from your land lord for. Replacing incandescent light bulbs with compact fluorescent or halogen light bulbs and unplugging appliances when not in use are two very easy, very basic ways to cut energy costs. Even if you land lord provides the big appliances such as refrigerator, stove, and oven, you can still look for Energy Star rated small appliances. Nowadays, TVs, DVD players, and even cable boxes come with Energy Star ratings. You can also buy an LCD TV instead of a plasma one to save energy. In winter months, putting heavy, dark curtains over your windows will add a layer of insulation to help cut heating costs. If you have a window AC unit, put a cover over it in winter months to help cover the hole in the wall.

There are other changes you can make that you will need your land lord’s permission for. Talk to your land lord before filling holes with caulk or foam sealant. Even though this may seem non-invasive, it is still considered an improvement or alteration. You will also want to try and convince your land lord to upgrade your old fridge to an Energy Star fridge. Remember, if you already have an Energy Star fridge, it cannot be replaced with one of lower quality.

It may take a little convincing to get your land lord to agree to some of these changes, but remind him that most of these energy saving upgrades are eligible for rebates. Offering to share the costs and then let him take the rebate credit could go a long way toward getting you a more energy efficient home. Don’t forget that you do have a bargaining chip: these are tough times and the real estate market is even tougher; no land lord wants to have a house back on the market, and most will do what they can to keep you.

Heat Pumps Vs. Furnaces

January 12th, 2010 by Melissa Doyle

Many people have questions about heat pumps. What are they? How do they work? Are heat pumps better than furnaces? Heat pumps offer a more energy efficient alternative to air conditioners and heaters. They work by moving heat from a cool space into a warm space so cool areas are cooler and warm areas are warmer. In other words, there is always heat in the air, even when during winter months, and heat pumps take this heat and move it indoors. The cycle can also be reversed in summer months so that heat is moved from inside out.
It takes much less energy to move heat than to generate it, so heat pumps can provide 4 times more energy than they consume. Compared to heating with electricity, heat pumps cut the amount of electricity used by 30-40%. They also dehumidify better than standard air conditioners.
I know this sounds fantastic, almost too good to believe. You can consolidate your heating and cooling needs into one unit and cut your electricity costs at the same time! But, heat pumps are not perfect for any climate. In southern areas where winters are mild heat pumps are going to be more efficient than in climates where temperatures regularly approach freezing, and even less efficient in climates where temperatures are regularly below freezing. Even in the Sun Belt where we have mild winters, we do occasionally have cold snaps where temperatures are near or below freezing for extended periods of time. During these times, you will need a back up heater. Heat pumps also emit a milder heat than standard heaters, but this heat distributes more evenly through the house, eliminating cold spots.
As always, you need to gather as much information as you can before changing your HVAC system. Any of our AC Doctor certified contractors would be more than happy to give you the information you need.

Do You Need A Home Energy Audit?

January 6th, 2010 by Melissa Doyle

Everyone wants to get the most for their money these days. Cars with the highest MPG, grocery store loyalty cards, coupon clipping, shopping the sales…But what about your home? Are you getting the most bang for your buck? Find out with a home energy audit. An energy audit measures the resistance to heat flow of your walls, ceilings, doors, floors, windows, and skylights. Heat naturally flows toward cooler temperatures. In the summer heat flows from outside to the air conditioned inside, and in the winter heat flows toward upstairs rooms and ultimately the attic. A higher resistance to heat flow means your home is properly insulated to prevent this from happening, or to greatly reduce it. With proper resistance to heat flow, your HVAC system does not need to work as hard.
Your home energy audit will include a written report estimating energy use based on local climate conditions, thermostat settings, roof overhang, and solar positioning and reveals the energy usage for any given time, as well as suggest improvements. If you have your billing statements handy for this chosen time period, you can improve the accuracy of these estimates as they have the total usage of energy your house consumes. The audit may also include a homeowner interview to see what your personal patterns are and can give you suggestions to better use your HVAC system. It may seem like a large upfront cost, the few hundred dollars for the estimate and then implementing the suggested changes to your home, but you will see a decrease in your heating and air conditioning bills that over time will cover the costs and then some.

Cash For Caulkers

December 21st, 2009 by Melissa Doyle

President Obama has been creating stimulus package after stimulus package, and while they have helped at the time, there has been no long time effect. His latest stimulus package, however, seems like it will have more long-term impact. Twenty-three billion dollars will be spent over two years, with $6 billion allotted to people who did at least two significant weatherization projects. There will be a list of ten projects such as air sealing, insulation, new light bulbs, and new appliances. Households that perform at least two of these will receive up to $2,000 and households that perform at least four will receive $3,500. Another $12 billion will be set aside for households who undertake a weatherization project that reduces consumption by at least 20 percent. A 20% reduction will get $4000, and each additional 5% will get an additional $1500. Two billion dollars will be set aside for audits to make sure that these changes actually took place. The remaining $3 billion will go toward incentives for companies and contractors. The government will not pay for more than half of any project, but a lot of these changes do pay for themselves eventually and getting this stimulus money will cut that time in half.

Modern Homes Fall Flat In Some Areas

November 6th, 2009 by Melissa Doyle

As I get older and start looking into buying my own home, I have begun researching what I want in a house. While I prefer the older, more classic looking houses, modern looking houses are all the rage right now. The easiest way to modernize a house is with a flat roof. But before taking this step to give your home a modern appearance, look at the climate you live in. Flat roofs are slightly pitched to rain water and debris can roll off, but in a part of the country that rains a lot, that is not enough of a pitch. The water can wear away at the roof and cause it to sag, retaining water. In the more arid parts of the country, they are just impractical. A steeper pitch creates more attic space, which creates more room for hot air to rise up out of your living spaces. Just don’t forget the insulation. It will keep out the cold in the winter and the heat in the summer! Living in Houston, this is especially important to me. Our summers are scorching and our winters are mild, sometimes edging into warm. Giving all that hot air a place to go helps cool the house without the use of the air conditioner, saving energy and money! Whether you’re buying, building, or renovating, keep your climate in mind. Whoever thought architecture could help you become more energy efficient? I know I had no idea!


Honeywell Makes Money By Saving Energy

October 20th, 2009 by Melissa Doyle

In today’s day and age saving money is sometimes more important than making money.  With that in mind, we’d like to give a shout-out to Honeywell who is helping consumers and businesses across the globe save money by saving energy.  With programmable thermostats, diagnostic circuitry, and basic upgrades Honeywell is helping 150 million homeowners and 10 million businesses cut energy bills.  Their diagnostic circuitry monitors AC units so that when one malfunctions, it can be diagnosed and repaired immediately.  Programmable thermostats kick on at a specified time so that homes are comfortable when people are there, and not being heated or cooled when the house is typically empty.  Some of the upgrades include installing compact fluorescent lights instead of incandescent lights and installing variable-speed fan controls on heaters and attach them to programmable thermostats.  Small changes like these can cut 20% off electric bills.  Novar (which is owned by Honeywell) installs smart-meters that can check if electronics are left on after hours, turn on a few lights when employees arrive before business hours, and alternate which lights are turned on to increase bulb life.  These smart-meters have saved companies 15% on their electric bills, paying for themselves in just a couple years!  Honeywell understands that the cost of retrofitting your home or business to be more energy efficient, but the upgrades do pay for themselves with the decreased energy bills. This is definitely an investment to look into, I know I am!

Let’s Save Some Money!

October 7th, 2009 by Melissa Doyle

The U.S. Energy Information Administration (EIA) is predicting lower heating bills this year…Yay! According to the EIA, homeowners should expect to spend about $100 less this winter than they did last year due to lower fuel prices and milder weather. It’s not a huge decrease, but we all know that every little bit helps.

Of course, factors of this decrease are the size of your home and the size and efficiency of your heating system. Keep in mind that a system that is too small for your house has to work harder. High efficiency furnaces help reduce spending, as well.

The EIA is also expecting the winter season to be 1 percent warmer. One percent is not a drastic change, but that slight increase could be enough to avoid freezing temperatures in some areas. There is a huge change in comfort level when the temperature drops into freezing levels…any of us that go from a brutally hot summer to a seasonably warm winter with just a snap of cold for 2 weeks in January/February can appreciate that. I’m in Houston, so I understand just how brutal freezing temperatures can be when you’re not used to them.

So keep an eye out for slightly higher temperatures and lower natural gas prices and watch your energy bill drop this winter.





 


 
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