Here's Some Required Knowledge For Today's HVAC Novices
Your HVAC system at home is probably the most vital piece of equipment that you have. Unfortunately, many people fail to realize this, and they end up having major problems with it. Don't let your HVAC system go bad on you, read the tips below for solid information that will help you out.
If you want to keep your air conditioning unit running efficiently, make sure you replace or clean the air filter once a month. Check the owner's manual on the a/c for instructions on how to clean the filter. Never run the unit when the filter is removed and let the filter dry before reinstallling it.
Ask for references and be sure to call them as well. You are dealing with a high ticket item here, so you'll want to do your due diligence to make sure you are getting the best for your money. Ask for references, but don't stop there. Call each reference to check. A lot of people don't take that important last step.
Sometimes, it can be hard to figure out if your HVAC system needs to be fixed or needs to be replaced. If your system frequently breaks down, is always turning on or off on its own, or if your bills are too high, it may pay to have it replaced. Otherwise, little things can just be fixed.
Clean your fan and coils when the weather begins to warm. Shut off power before working or cleaning your system. Also, be sure to clear leaves and debris from your condenser unit.
If you have a window air conditioner without a timer, use a regular outlet timer to control when it is on or off. These are the same ones you use for holiday lights, so all you have to do is plug your air conditioner into the timer and set it to cool you during the day.
Your system should be checked twice a year. The normally recommended time for HVAC system inspections is once before the peak cooling season when it gets hot and you'll be using your AC, and once before the peak heating season, during the cold months when you're likely to be using your heat. Even if you do not detect a problem, you can identify and fix any potential problems when you have it checked.
If you want to pay for less power use, consider installing an HVAC-specific solar panel system. Such an installation harnesses the power of the sun directly for your heating and air conditioning. Don't worry though; you can have a switch put in that automatically connects to the power grid the days there isn't enough sun.
Get an estimate before agreeing to have any work done on your HVAC unit. This will help keep you from being surprised by a bill at the end. Any reputable technician should be able to look at your unit, determine the problem and give you an estimate as to how much it will cost to fix it.
Whether you have an air conditioner in a window or outside your home, be sure to keep it in the shade. The cooler the air around it, and the cooler the condenser itself, the easier a time it will have of keeping the air inside your home cool as well.
Check for duct leaks if your unit seems to not be working efficiently. You can call a utility company in your area to help you with testing, and that doesn't cost much or nothing at all usually. When you repair the leaks, the tests will pay for themselves.
Every month clean out the leaves and debris that may have settled into your outdoor HVAC unit. You'll be surprised at how much gets caught in your unit. Over time these leaves can build up and create issues for your system. Just this little clean up can save you a lot of money in maintenance bills.
Are you going to buy a new HVAC system? There are a number of things to think about first. Systems are rated by the amount of area the system can heat and cool effectively. You are wise to err on the side of a bigger unit rather than a smaller one.
Be careful of sounds in your HVAC. If the condenser fan begins to make a grating or clicking sound, the blades could be hitting an obstruction. If blades get bent, don't try straightening them. You could unbalance them and cause them to hit the condenser coil. This could loosen the motor in the fan. Try replacing the bent blades with new ones. Make sure the new blades can freely rotate without wobbling.
If you are going to use the Internet as a source for good HVAC contractors, you need to be very careful. You never know who is behind the glowing reviews that are posted all over the Web. There is a chance that the contractor is posting their own reviews or paying others to do so.
Learn the rules and regulations regarding licenses and insurance before hiring an HVAC professional. This way you can check to make sure that any contractor you consider hiring meets any requirements. This can prevent a costly legal process, especially in case of an accident on site. Without insurance, you could be held liable for damages.
The next time that you have an HVAC technician at your home or business, ask them to put in a thermostat that is programmable. This will help you to regulate the temperature at all times.
Always get some references before hiring any contractor. This will show you their overall experience. If you check references carefully, you can avoid being scammed.
If your outdoor compressor unit sits in the sun, consider building a shade over it. Air in the shade is about 5 degrees cooler than air in the sun. This can have a significant impact on your cooling bill. When done properly, you could see up to a 10 percent savings over the season.
A good HVAC system can keep your home comfortable, no matter how hot or how cold it may be outside. However, it can be hard to find the perfect system for your needs. There is so much that you need to remember. The tips you have read here will be very useful to you.
Ancient 'air-conditioning' cools building sustainably
How did buildings keep cool before the invention of air conditioning? As architects consider how to reduce the energy demands of new builds, some are turning to the past for simple, low-tech solutions.
At the height of summer, in the sweltering industrial suburbs of Jaipur, Rajasthan in north-west India, the Pearl Academy of Fashion remains 20 degrees cooler inside than out -- by drawing on Rajasthan's ancient architecture.
While the exterior appears very much in keeping with the trends of contemporary design, at the base of the building is a vast pool of water -- a cooling concept taken directly from the stepwell structures developed locally over 1,500 years ago to provide refuge from the desert heat.
Award-winning architect Manit Rastogi, who designed the academy, explains that baoli -- the Hindi word for stepwell -- are bodies of water encased by a descending set of steps.
"When water evaporates in heat, it immediately brings down the temperature of the space around it," he says.
While traditional stepwells often go many stories below ground level, Rastogi's go down just four meters. However, the effect is the same and -- like the ancient Mughal palaces before it -- the academy enjoys its own microclimate.
Read more from Road to Rio: The slums of Mumbai: A model of urban sustainability?
Rastogi wonders: "How did they think up something so elaborate and yet so simple in its basic philosophy?
"How do you begin to think that you can dig into the ground and use the earth as a heat sink, have access to water, put a pavilion into it so that its comfortable through the year? It takes a lot of technology for us to think up something that simple now."
But it's not just the stepwells that are involved in this process of "passive cooling" -- the general term applied to technologies or design features that cool buildings without power consumption.
The whole building is raised above the ground on pillars, creating an airy and shaded pavilion that is used as a recreation and exhibition space. Here, according to Rastogi, the walls are made from a heat-absorbing material that creates a "thermal bank" -- so the warmth is slowly released at night when the temperature drops.
Centuries ago, latticed screens or "jaali" filtered direct sunlight into the palaces. The effect was decorative and helped reduce the heat. Likewise at The Pearl Academy, a latticed concrete screen runs the length of the building and provides a cooling outer skin.
"We've been able to demonstrate that good green building is not only cheaper to run; it's not only more comfortable to live in -- it's also cheaper to build," says Rastogi.
The success of the academy's eco-design has had an impact. Regulations -- based on these passive cooling techniques -- were introduced last year for all new Indian government buildings.
https://docs.google.com/presentation/d/1lsY92_nmCH1u72gjMYI4ZChOCJLeKAXLe9ieG5qDeR4/edit?usp=sharing