Sound Heating and Air Conditioning Inc. Blog: Archive for the ‘Indoor Air Quality’ Category

Your Tacoma HVAC System and Ventilation

Monday, June 18th, 2012

The vent system in your home is vital to the operation of your Tacoma HVAC system. Without successful ventilation, your home won’t have the necessary clean air to keep you and your family healthy. So, what does proper ventilation require and how can you ensure your home has it? Here are some quick tips.

Install the Right Parts from the Start

Proper ventilation should result in even air pressure in your home to avoid problems with gas pilot lights. It should also be as energy efficient as possible and provide clean air through proper filtration and cleaning of the air that comes in. The best way to ensure your home has the ventilation needed to stay comfortable and safe for your entire family is to check the total size of the home and then measure the concentrations of certain pollutants like dander, pollen and smoke. A Tacoma HVAC contractor can provide these services for you.

Energy Loss

Another major ventilation issue to keep in mind is energy loss. Ventilation tends to remove heated or cooled air from your home, forcing your furnace or air conditioner to work harder to replace it. As a result, you pay more for energy and it’s never quite comfortable inside.

To avoid this problem, ask about an energy recovery ventilator. These devices are designed to transfer heat from one environment into another. So, in the winter, heated air inside is kept inside and in the summer, cooled air is kept inside. The result is a much lower energy bill without a disruption to your ventilation sources.

Supplements to Ventilation

Proper ventilation should not only provide fresh air, but it should also ensure your home has clean air. The air outside may be fresher, but it can be filled with pollutants like pollen, dander and smoke. These should be removed before they get inside and into the lungs of your loved ones. To do this, you need a full sized air cleaning system that removes particles from the air down to 0.3 microns.

HEPA filters can do this, as will electronic air cleaners which can ionize and remove smoke and gas particles. Make sure you discuss filtration and cleaning with your Tacoma HVAC contractor when they visit your home. Call Sound Heating & Air Conditioning today if you have any questions about how to improve your indoor air quality!

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Common Mold Myths in Redmond

Monday, May 7th, 2012

You hear a lot of bad things about mold and while a lot of them are true, many are not. To help you avoid unnecessary scares and excessive worry about air filtration in Redmond, here are some of the most common myths we hear about mold:

  • Black Mold!! – Black mold is not the only mold you should worry about. While black mold does produce mycotoxins and can be quite dangerous if it develops in your living space, all molds can be potentially dangerous due to the off gassing of MVOCs and other chemicals. If you see mold – whether green, black, grey, or red – call someone immediately to test and check your home for toxicity.
  • Scrubbing with Bleach Gets Rid of Mold – Mold can be removed with bleach, but only on the surfaces you can reach. Real mold removal uses more advanced techniques to clear away spores, block sources of moisture and reduce the presence of the toxins produced by mold. It’s impossible to ever truly, 100% remove mold from any environment, but with the right abatement techniques, you can reduce its impact.
  • Mildew Isn’t a Big Deal – Mildew may have a different name but it’s the same problem. Mildew is a certain kind of mold and that stale, musty smell you experience when it develops is the development of microbial volatile organic compounds – chemicals like benzene and aldehyde. To ensure mildew doesn’t have a negative impact on the overall indoor air quality, be sure to reduce and remove moisture from your home whenever it develops – in basements and attics as well as bathrooms and kitchens.
  • Mold Needs Organic Material to Grow – Mold can grow on anything with enough moisture. While carpets, upholstery, paper and other organic based materials are more likely to develop mold, it can grow on glass, porcelain and metal if enough of the spores are present. The key to mold abatement is not material changes or closing it out; it is to remove the moisture and seal up holes.

Mold is a major health problem for millions – by better understanding it, you can minimize the risk and keep your family safe. If you suspect mold in your home, don’t wait to have it checked. Call Sound Heating today for full testing, inspection and, if necessary, removal.

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Indoor Air Quality Tips: Microbial Volatile Organic Compounds

Monday, April 23rd, 2012

Homes if Des Moines can develop microbial volatile organic compounds, which are chemical agents produced by organic materials like mold that can have a potentially dangerous effect on your nervous system. In fact, some MVOCs have an equal or even worse effect on the human body as petroleum based VOCs which have long been labeled as dangerous to inhale by the EPA.

The problem of course is that there are too many talking heads out there telling you that MVOCs will kill you or that they can be ignored. The truth is in between, and for your family to remain safe and healthy you need to keep a close eye on the effects of potential black mold patches in your home.

Handling MVOCs

The first step to reducing MVOCs in your home is mold abatement. Proper removal will reduce the volume of mold that can off gas these chemicals. Additionally, you should reduce your use of such chemicals as aerosol sprays, paints and paint thinners, hobby supplies, air fresheners and other chemicals compounds that produce manmade or petroleum based chemicals that feed mold.  Make sure that your home has proper ventilation and air filtration.

Finally, make sure you have your home inspected as soon as you suspect the presence of mold. Regardless of the mold’s color and the smell you notice, it should be checked by a professional in the mold detection and abatement field. It might be nothing, but if it is something, you want someone you can trust to take care of it immediately.  Ask a professional what type of air purification appliances you should utilize.

Toxicity in Many Molds

The most commonly cited “toxic” mold is black mold or stachybotrys. This mold produces a mycotoxin that can quite literally poison anyone who breathes or ingests it. However, other forms of mold which might appear as red, white, green or grey produce MVOCs that are equally dangerous. Many people with mold have these dangerous chemicals in their home and don’t even realize it.

Typically, MVOCs can be smelled as a musty, organic gas that develops from the mold as it matures. Mold produces a variety of chemicals including benzene, aldehyde, tulolene, more. These chemicals create that musty scent and are all quite dangerous to the human body. Just because a chemical is organic doesn’t mean it isn’t dangerous to your health. Imagine if man made formaldehyde or benzene were in the air near your children – what would you do?

Please contact Sound Heating if you have any questions.

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HVAC Tips: What is an Electric Furnace?

Friday, February 17th, 2012

There are many types of furnaces for Covington homes that use a variety of energy sources to operate. Gas furnaces use natural or propane gas, boilers and radiators use water, heated by electricity. And then there are electric furnaces, which may have an advantage over other energy sources based on energy costs.

Simply put, electric furnaces function through the use of electricity. They do not require the use of any type of fuel – but function through wires and chords. An electric furnace uses heating coils, sometimes referred to as “resistance calrods” to create heat directly in the air flow. Inside the furnace cabinet are controls, a blower, and the circuit breakers for the heating elements. Some furnaces have the breakers accessible from the outside of the cabinet.

Other add-on accessories may include an electronic air cleaner, air filter, humidifier, high performance media filter, and air conditioning evaporator coil.

The heating process begins with the home’s thermostat. A drop in temperature is sensed by the thermostat, which alerts the electric furnace. The coil then warms up, thanks to the electric current that passes through it. The heated coil in turn heats the temperature of the air around it, which is then blown into the house through a blower. The pressure that is exerted by the blower on the heated air, warms it further. The blower is able to overcome the resistance of the duct work and replace unheated, colder air with the heated air. In most homes there are various return air ducts that are used to bring in the colder air to the furnace. This cold air travels through the furnace, through an air filter, the blower, and finally through the heat exchanger. After this it will then be pushed back into the house as warm air.

To maintain a supply of fresh air in the house, some furnaces also suck air from the atmosphere outside. After the air in the house reaches a particular temperature, the thermostat automatically shuts off the electric furnace.

An electric furnace may be less costly to run, depending on the price of electricity versus other sources like natural gas, propane gas, or oil. Gas and oil are fossil fuels and burning them leaves a “carbon footprint” – the release of carbon compounds and gases into the atmosphere. An electric furnace does not burn fuel and thus does not leave a carbon footprint. This electric warming process results in fewer particulates and contaminants in the air, too.  If you have any questions about this topic please call Sound Heating.

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Sound Heating and Air Conditioning Wishes Tacoma Residents a Happy Valentine’s Day!

Tuesday, February 14th, 2012

Everyone at Sound Heating and Air Conditioning wishes you a very Happy Valentine’s Day!  We hope your day is full of love and laughter! Valentine’s Day is a time to really appreciate all of the wonderful people in your life, including your significant other, your family, and your friends. Take a moment today to let each of them know how special they are to you. Even something simple, like a handmade card, can really make someone’s whole day!

While your HVAC system might not seem like the most romantic place to start your gift giving, a few simple upgrades can make your house more comfortable, which is something your whole family will appreciate! A HEPA Air Filter can keep dust and allergens out of your air, and a new furnace or heat pump can keep your house at more consistent temperatures and cut down on your energy use. An upgrade to your HVAC system is truly a gift that keeps on giving!

For more information about easy ways to improve your home, give Sound Heating and Airconditioning a call! And to help make your Valentine’s Day as happy as it can be, here is a recipe for Ghirardelli Chocolate Raspberry Cheesecake Hearts

Ingredients

  • Crust:
  • 1 1/2 cups chocolate graham cracker crumbs
  • 1/2 cup ground almonds
  • 4 tablespoons white sugar
  • 3/4 cup butter, melted
  • Cheesecake:
  • 4 (8 ounce) packages cream cheese, softened
  • 3/4 cup white sugar
  • 4 eggs
  • Raspberry puree (recipe below)
  • 2 cups Ghirardelli 60% Cacao Bittersweet Chocolate Chips
  • 1/2 cup heavy cream
  • Raspberry puree:
  • 1 (10 ounce) package frozen raspberries
  • 4 tablespoons white sugar
  • Chocolate Ganache (optional):
  • 8 ounces Ghirardelli 60% Cacao Bittersweet Chocolate Chips
  • 1/2 cup heavy cream
  • Additional Garnishes (optional):
  • Fresh raspberries
  • 8 ounces white chocolate, melted for drizzling

Directions

  1. Preheat over to 325 degrees F (165 degrees C).
  2. CRUST: In a microwave safe bowl, melt the butter. Add the chocolate graham crackers, ground almonds, and sugar and mix until combined. Press mixture into the bottom of a 9-inch springform pan and set aside.
  3. PUREE: In a saucepan, combine raspberries and sugar. Bring to boil, and continue boiling 3-5 minutes, or until sauce is thick. Strain sauce through a mesh strainer to remove seeds and set aside.
  4. CHEESECAKE: In a small pot over low heat, bring the whipping cream to just boiling. Remove from heat and add the chocolate chips. Set aside for 5 minutes and then stir until smooth.
  5. In a large bowl, mix together cream cheese and 3/4 cup sugar until smooth. Beat in eggs, one at a time. Remove approximately 1 1/2 cup of this batter and place into a smaller bowl and add 1/2 cup raspberry puree. Blend until combined. Add the melted chocolate to the remaining batter and mix until combined. Pour the chocolate cheesecake batter into the pan. Very carefully layer the raspberry cheesecake mixture on top of the chocolate mixture. Bake for 60 to 75 minutes, or until filling is set. Cool in pan, then cover with plastic wrap and refrigerate until cold before removing from pan.

For more details, visit allrecipes.com.

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Indoor Air Quality Tips: How Electronic Air Filter Works

Monday, February 6th, 2012

For a long time, the most frequently used kind of air filter in Tacoma has been the mechanical variety. This is the kind you probably think of when you hear the terms air filter, air cleaner or air purifier. They use pleated fibrous filters in-line with an air handler to trap particles in the air before circulating it back out into the home. Many models of these work very well and have for many years. They have the added benefit of being flexible because you can put in whatever filter you need depending on what size particles you need to trap. However, these traditional devices are not the only option. A second kind of air filter exists for trapping particles in the air– one that does not use a fibrous filter that physically snags them out of the air on the way through. These electrostatic, or electronic air filters work in a different way to produce a similar result. The filtering component is still a fibrous sheet, but the difference is that the fibers are made of plastic, which becomes charged when air passes through it and causes friction. (Think something like when you rub a balloon and stick it to the wall.) These friction-charged fibers carry an electronic charge, which attracts the ions in the air around it. These ions — and the particles that they are a part of — get trapped in the fibers and stay out of your air supply. Electronic air filters are generally very good at trapping particles that are 1 micron in size or higher, putting them about on par with a mechanical air filter that carries a MERV rating of 12. The electrostatic method works well for many common household air pollutants, such as dust, pollen, mold and pet dander. As with many ventilation-related decisions, the choice of what kind of air filter is right for you depends on your needs and those of your family. If you are having trouble deciding, then contact Sound HCVA experts with any questions.

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HVAC Tip: Seasonal Air Quality Control

Friday, January 27th, 2012

For people who suffer from seasonal allergies in Seattle, air quality is a key concern. Allergens in the air cause brutal bouts of sneezing, runny nose, itchy eyes and even sinus headaches. Even taking refuge indoors will often not assuage these symptoms, as indoor air is often comparable to outdoor air in terms of allergens and overall quality.

That is, unless you take care to control the seasonal air quality in your home, which can not only help ease the suffering of allergies, but also soothe asthmatics, keep out pollutants and generally promote better overall health.

How do you go about controlling the air quality in your home? To start, try these simple tips:

  1. Vacuum carpets regularly. Use a vacuum with a HEPA filter and invest in some allergen suppressing bags.
  2. Keep your vents clean. This is also a good maintenance practice to lengthen the life of your ventilation equipment.
  3. Dust hard surfaces and wash bed linens weekly.
  4. Install HEPA filters in your ventilation system, such as in air conditioners or other air handler units. Use a higher rated filter to keep out more allergens and pollutants.
  5. Invest in and use an air purifier. Again, make sure to get one with a HEPA filter.
  6. Have your home tested for radon and carbon monoxide. Have smoke, carbon monoxide and radon detectors working properly at all times.
  7. Use a humidifier to keep overly dry air from irritating sinus passages.
  8. Keep doors and windows closed tight, especially during allergy season(s).

By taking charge of the air quality in your Seattle home, you also take control of a measure of your family’s health. Some of these measures require at least a bit of an investment – for example, higher rated HEPA air filters are often more expensive and need to be changed more frequently – but the benefits to your well being and that of your family are clearly well worth it.

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HVAC Question: How Tightly Should You Seal Your Home?

Wednesday, January 25th, 2012

More and more products and solutions are available to us these days to help seal our homes off from the outside world. The idea is that by keeping outside air out, our Redmond homes are more energy efficient and healthier, because all pollutants and pathogens are barred from entry.

This is a good idea in theory, but it can have its drawbacks. Most notably, sealing your home up too much can be bad for your family’s health. If your home is sealed too tightly such that there is not enough air flow from within the home to the outside and vice versa, then the indoor air just…stays indoors.

That means that all the sneezes, coughs, dust, dander, smoke and carbon dioxide stay inside with it. All that stuff can make you sick, completely flying in the face of your efforts to stay healthy by sealing your home.

Now, that’s not to say that sealing your home is a bad thing. Using LEED glass in your windows does keep heat in and increase heating efficiency. Air filters do help eliminate pollutants and pathogens from the outside than can make you sick. Good insulation and intact ductwork do help keep your home comfortable and efficient in both the cold and hot months.

So, sealing your home is not a bad idea. The trick is to not go overboard and seal it up so tightly that you are crossing the threshold from having a healthy home to having a giant Petri dish. You want to have a home that is insulated, but not vacuum sealed. You want a home with filtered air, but still plenty of air exchange with the outside world.  Thankfully, mechanical ventilation is a way to both keep your home energy efficient and keep your indoor air from getting stale.

To help you with this endeavor, there are guides available online, such as at the ENERGY STAR website. In addition, it is a good idea to consult with a professional and ask plenty of questions when building a new home or making improvements to your current one. A qualified Redmond HVAC technician will know how to insulate and ventilate your home properly to protect your family’s health.

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A Guide from Des Moines: Surprising Sources of Indoor Air Pollution

Wednesday, December 7th, 2011

Indoor air pollution is a major problem for millions of homeowners throughout the country each year, and some of them even live in Des Moines. In fact, the EPA estimates upwards of 20 million households may have problems caused by mold, radon, humidity, exhaust or any number of other pollutant problems. However, not all of the indoor air pollutants out there are so obvious. Some are things you probably have in your home right now and don’t realize it. Here are some of the more surprising sources of indoor air pollution and what you can do about them:

  • Incense – Incense releases both carbon monoxide and benzene, two chemicals that are potentially harmful to human health. Cancer, skin irritation and asthma risks are all increased in people who spend a lot of time around incense.
  • Laser printers – Laser printers that use toner can release a number of harmful chemicals into the air. That toner is very fine and releases particles into the air that are equal to or in some cases worse than second hand cigarette smoke. If you have a laser printer, consider putting it in a well-ventilated, infrequently used space.
  • Kitchen Stove – If you have a gas stove, it releases Nitrogen Dioxide when on, an unsafe gas that is odorless and fills your home quickly. This gas is bad for respiration and can cause asthma attacks. To solve this problem, simply make sure you stove is ventilated properly when cooking.
  • Spackle – Old spackle – the kind used before the 1980s often contained asbestos which can still be there, waiting to be disturbed. Old asbestos, while not inherently dangerous, will become so if you start doing work in your home or if the spackle starts to wear away. To solve this problem either call an abatement firm or cover the offending wall with a new layer.
  • Drapes – Those drapes are filled with contaminants that cling there, especially if humidity is a problem in your home. Dust mites in particular are bad for your health and can cause asthma and other allergies. Blinds are better than drapes for this reason.

Your home is filled with potentially dangerous problems, but you can avoid them simply by taking care to ventilate, clear away unsafe products and keep things like drapes clean (or remove them). If you’re still concerned about your air quality, call an expert to investigate.

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How Indoor Air Quality Controls Can Help People with Asthma: Some Pointers from Olympia

Wednesday, October 26th, 2011

If you, your child or anyone else in your family suffers from asthma, you know that it can be brutal. The shortness of breath, the wheezing, and the chest tightness—it’s not just uncomfortable; it can be downright scary.

There is evidence to suggest that higher quality air can help keep asthma symptoms in check. While you can’t control air quality everywhere you go, you can be in charge of the quality of the air in your own Olympia home. Take a look at how controlling indoor air quality can help ease the suffering of asthma symptoms.

One study at Johns Hopkins found that indoor air pollution plays a large role in increasing asthma symptoms, especially among children. Without getting too technical, essentially the study explains that there are particles in the air we breathe, including indoors. Aside from the standard mixture of oxygen, carbon dioxide and other gases, air contains these solid and liquid particles, which are essentially pollutants. Common household tasks like dusting and cooking can generate more of these particles.

When these particles get into the respiratory system, they can irritate the lungs, which triggers asthma symptoms. Since children spend about 80% of their time indoors, this is a very big deal.

To help this problem, there are ways to control and improve the quality of air in your home. One simple way to do this is to have filters with high minimum efficiency reporting value (MERV) ratings in your heating and cooling system. MERV ratings describe how well filters catch particles of certain sizes and keeping them out of the air—and your lungs.

The particles identified in the Hopkins study were as small as 2.5 microns, which would require a filter with a MERV rating of about 12 to catch. Higher MERV ratings mean more efficient filtration, but they need to be replaced more often. If you or child has asthma, it’s worth it.

For severe asthma or allergies, consider even higher-rated filters, like HEPA filters, which sport a MERV of 17 or higher. These will catch nearly all allergens, irritants and other particles that can make you sick.

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