HVAC Question: What Type of Air Cleaner Is Best for People with Pets?

August 27th, 2012

Lots of people have pets, and they are a great addition to your family. However, pet ownership has one very obvious drawback: dander. The fur, dry skin cells and other debris that pets carry around flakes off their bodies and onto your furniture and rugs. The also means they inevitably wind up in your air, recirculated through your Kirkland house via your HVAC system.

Or at least, that’s what happens if you don’t have an air cleaner or some sort of air filtration system. This leads many pet owners to ask, “what is the best air cleaner for me?”

With all the choices in air cleaners, the choice can seem daunting. If the goal is specifically to filter out pet dander, it becomes somewhat easier.

Pet dander is quite large in size relation to other indoor air pollutants, so many air cleaners are equipped to do the job. You can use an air cleaner with a standard pleated HEPA filter, or one that uses electrostatic technology. You will want to make sure that the HEPA filter is rated to handle pet dander. A MERV rating of 8 or more is recommended.

Once you have an air cleaner installed, make sure to change or clean the air filter frequently, in accordance with manufacturer instructions. A clogged air filter won’t help eliminate pet dander from your household air and can actually degrade the operation of your HVAC system’s air handler.

In addition to installing a high quality air cleaner with a HEPA filter, you can also help reduce the amount of pet dander floating around your home by keeping the place clean. Vacuuming often and dusting hard surfaces weekly keeps pet hair and dander from being drawn up into the HVAC system, which reduces wear on the air cleaner. For more tips on upgrades you can make to your Kirkland HVAC system, give Sound Heating & Air Conditioning a call!

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Heat Pump Tip: SEER vs. HSPF

August 20th, 2012

When it comes to Bellevue heat pumps, there are two different ratings you’ll often see – the SEER and the HSPF. So, what does each of them mean and which rating is more important when purchasing your new device? Here are a few things to consider:

 SEER

The acronym SEER is short for “seasonal energy efficiency rating” and is used most commonly to measure air conditioner efficiency or in this case, the cooling capacity of your heat pump.

 HSPF

The HSPF is short for “heating seasonal performance factor” and is a measurement of how efficient the heat pump is in producing heat during the cooler months of the year.

 The Difference Between the Two

Every heat pump will have both of these ratings, allowing you to see how efficient each is. This is important because you need to know for certain how well your heat pump will perform under certain situations – both in the winter and summer.

However, if you live in a colder climate where the summer rarely calls for air conditioner, your focus should be on the HSPF first. And if you live in a warmer climate where your heating needs are minimal, the SEER is most important. Another thing to consider is your supplemental heat. If the cost of your supplemental heating system is high, you’ll want an HSPF that is as low as possible to balance it out.

 Choosing an Efficient Heat Pump

Heat pump efficiency directly impacts the price of the device you purchase but is almost always worth the difference. The key is to find a device that provides what you need based on where you live. Keep in mind as well that, like most HVAC upgrades, you won’t immediately recoup the cost of the device in your energy savings, so if you plan on moving soon, you should purchase a more affordable device now and upgrade later.

Purchasing a new heat pump for your Bellevue home is an important step in making it more energy efficient. If you are unsure which rating you need or how to analyze their meanings, contact a professional to learn more.

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Air Conditioning Question: What Are Thermostatic Expansion Valves?

August 13th, 2012

The thermostatic expansion valve, sometimes known as a TEX, TEV or TXV, is a critical piece to influence the efficiency of air conditioning and refrigeration units.  A tiny sensor controlling the evaporating phase of process, the valve can have a big effect.

Cool air is manufactured by a rapid movement of a refrigerant between liquid and gaseous states.  Compound chemicals that are able to do this at a low temperature are compressed and expanded, absorbing and releasing heat at different points along the way.  The TEV controls the flow of the refrigerant into the evaporator coils according to the temperatures of the various ingredients.

Cool Air 101

To condition air, the refrigerant, most often freon or another fast acting, low temp compound, evaporates into a gas that runs through a coil and absorbs heat.  Passing through a compressor, the freon condenses under pressure back into a liquid again and releases the heat, becoming cool enough to chill a party.

Too much freon in the evaporator tube and the pressure is not low enough to expand to gas and absorb heat, working inefficiently for no gain.  Too little freon and the conversion is also ineffective by not reaching the density needed to condense.

There are four types of valves with different benefits for different types of cooling environments.  With its ability to adjust minutely to changing conditions, the thermal expansion valve creates the perfect mixture of pressure and freon for more complicated systems.

At the Starting Gate

An interactive device, the valve senses the evaporator pressure and temperature and adjusts the flow of the refrigerant so as to maintain a given “superheat”, the differ­ence between the refrigerant vapor temperature and its sat­uration temperature.  By controlling superheat, the TEV keeps nearly the entire evaporator surface active while not permit­ting liquid refrigerant to return to the compressor.

Some valves operate on an electrical impulse from sensors that can measure the temperatures.  Others are open all the time.  The thermostatic expansion valve actually utilizes the pressure between the two sections to open or close itself, regulating flow based on the very same pressure it is designed to moderate.

Like the buildings they comfort, central air conditioning systems in Tacoma are varied and diverse.  For more information about air conditioning or to schedule a service call, contact Sound Heating & Air Conditioning today!

 

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Air Conditioning Guide: Things You Should Never Do To Your Air Conditioner

August 6th, 2012

Whether it’s a large central system on the side of the house or a small unit in the window, with proper care and maintenance, your Olympia air conditioner should last for a decade or two.  Sometimes, however, people can do simple things which, in retrospect, should have obviously been avoided.

Some examples:

  • Don’t block the air intake–air is vital to the process, so laying anything over the unit (a towel or clothes to dry) will significantly strain the motor.  Always make sure there is enough clearance.
  • Don’t block the vents–likewise in a home, it is easy to move a sofa or lay an area rug over a grate in the floor or cover an unsightly vent in the wall with a pretty painting.
  • Don’t just set a unit in the window and trust the sash to hold it in place–make sure it is fastened properly according to the directions;
  • Don’t think it will run forever without cleaning the fins, vents and changing the filter at least once a cooling season;
  • Don’t bury the condensate drain in the ground–in central units it is vital that the drain is left with a clear flow away from the house;
  • Don’t install the central unit on the ground–there are pre-made pads or mix up a little concrete
  • Don’t steam clean or use hot water to clean the fins–damage and corrosion can easily be caused by the heat; flush with warm water or spray.
  • Don’t remove the overload relay to force continuous running–VERY dangerous and a guarantee of damage.

Your Olympia  air conditioner is a pretty reliable device, but a little attention goes a long way to ensure years of comfort. To schedule a maintenance appointment today, give Sound Heating & Air Conditioning a call!

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HVAC Guide: Pollen’s Effects on Indoor Air Quality

July 30th, 2012

Unsure what’s got you feeling down? It might be the air quality in your Kirkland home that’s been compromised by high pollen levels. But, how do you know when pollen is the culprit as opposed to something like pet dander or simple dust? Luckily, there is a clear difference in the symptoms you might suffer from as a result of being exposed to pollen as opposed to another allergen.

Symptoms of Pollen in Your Home

Pollen is most often associated with seasonal allergies, though even perfectly healthy people without allergies are susceptible to pollen reactions if there is enough of it in the air. The most common symptoms of a pollen allergy include:

  • Headache
  • Fatigue
  • Eye and Nose Irritation
  • Cough
  • Asthma (made worse)
  • Allergic Reactions

Other symptoms, like throat irritation or skin rash tend to be caused by other pollutants like tobacco smoke or bacteria build up. So, if this sounds like what you’re facing, what is the next step? There are a few things you can do to tackle pollen in your indoor air.

Getting Rid of High Pollen Levels

Step one when the pollen levels in your home are too high is to find the source of the pollen. If it’s an indoor plant, air cleaning upgrades may not get the job done. But, if it’s an outdoor source or a single room in your house, solutions abound.

The first step is to install filtration in your Kirkland house. Pollen is relatively big so a simple MERV 10+ filter will usually remove it from the air. However, if you have other pollutants that need to be removed, consider getting a HEPA filter. Designed to capture particles as small as 0.3 microns, HEPA filters are a fantastic solution to the pollen problem.

Once you have a good air filter in place, supplement with proper ventilation to remove pollen filled air from your house. Ventilation with energy saving technology allows you to retain any heat or cooled air in your home. Sound Heating & Air Conditioning  can help you select the best system to tackle your pollen problem.

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AC Tip: Cooling Coil or Evaporator Coil Diagnosis & Repair for Air Conditioners

July 23rd, 2012

Inside the air handler of your Seattle air conditioning system is a cooling coil or evaporator coil. From a home cooling perspective, this is where the magic happens: where the actual cooling occurs. So, if there is a problem with the cooling or evaporator coil, you will notice a decrease in the performance of your AC system.

You may notice that the air flow has slowed significantly or even stopped, even though you can hear the air handler running. You may also notice that the air isn’t as cool as it used to be or should be. Aside from having a house that is not cool enough, this can also cause problems like high electricity bills or damage to other parts of the air conditioner. Use this quick guide to start diagnosing and repairing the problem.

Diagnosis

For starters, just try to get a good look at the cooling coil. Some problems are obvious enough upon visual inspection that no further diagnostics or major repair is necessary.

If you are able to see the cooling coil, look for things like:

  • Dirt and debris
  • Mold
  • Staining that indicates a refrigerant leak
  • Ice or frost
  • Damaged fins on the coil

Repair

Any of these could be the culprit that is degrading the performance of your Seattle AC system. Some of these you can take care of pretty simply on your own – if there is obvious debris that you can remove safely, do so – but for most repairs you will want to call in a licensed technician. Especially if the problem is something potentially hazardous like mold growth or a refrigerant leak, you don’t want to take the risk. Let a professional from Sound Heating & Air Conditioning who is trained in safely and effectively repairing the problem take care of it, so that your home can be comfortable again.

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AC Question: Can I Choose Environmentally Friendly Coolants?

July 16th, 2012

Air conditioners are indispensable in many parts of the country, but their environmental impact has long been a source of controversy. In particular, the coolants that were used in the earliest air conditioners, chlorofluorocarbons (CFCs) have done quite a bit of damage to the Earth’s protective ozone layer.

When this affect was discovered, countries all over the world acted to have them phased out of production and use in air conditioning. While CFCs have not been produced since 1995, there are still many air conditioning units functioning today that use CFCs. As these units wear out, of course, the CFCs will gradually disappear from use altogether.

Another type of coolant that is commonly used in air conditioners is hydrochlorofluorocarbons (HCFCs). These have a slightly lower environmental impact than their cousin CFCs, but they are still not ideal in terms of preserving the ozone layer and impeding the progress of global warming. HCFCs are gradually being phased out as well, and they will no longer be produced at all by 2030.

However, it is still possible to buy air conditioners that use HCFCs as a coolant, and if you can avoid this, you should. HCFCs are not nearly as environmentally friendly as some of the other options on the market, and if you are concerned about the effect that these types of chemicals can have on our environment, it is best to steer clear of air conditioners that use HCFCs.

So what coolants are considered environmentally friendly? Well, there are actually two options in this regard. The first are hydroflourocarbons (HFCs). Although they are quite similar to CFCs and HCFCs, HFCs do not contain chlorine and so do not do the type of damage that their predecessors were capable of. You can find air conditioners that use HFCs relatively easily by looking for an “ozone friendly” label on the box.

Refrigerant blends are also becoming a more and more popular environmentally friendly coolant solution for air conditioners as well. Although these types of coolants typically cost more to produce and so can drive up the cost of the air conditioners that use them, they should begin to come down in price as they are more widely adopted across the industry. Just as with HFCs, look for the “ozone friendly” label to identify air conditioners that use refrigerant blends as coolants. For more information about how to choose an air conditioning system in Puyallup, give Sound Heating & Air Conditioning a call today!

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AC Question: Do Heat Pumps Work for Air Conditioning?

July 9th, 2012

It’s possible that in the course of your search for a new air conditioning system in Tacoma, you read or were told about heat pumps. Doesn’t sound right, does it – heat pumps providing cooling for your home? Regardless of the seeming misnomer, heat pumps are actually much older and more reliable cooling technology than you know. And once you understand how these units work, the name makes much more sense.

What Is a Heat Pump?

Technically every refrigerant containing air conditioner is some form of heat pump. A heat pump is a device that removes heat from one area and transfers it to another. So, in the case of your air conditioner, warm air cycles into the condenser, the heat is removed, and the cooled air is circulated back through your home. The actual science behind this is slightly more complicated, but the gist is simple – cold air isn’t produced and then pumped into your home; warm air is removed.

Your refrigerator and freezer operate under the same principle. It works so well that it’s been a standard technology for nearly 100 years, albeit with quite a few upgrades and enhancements. So, if an air conditioner already is a heat pump, why are these devices called something different? Because heat pumps can do so much more.

Heat Producing Heat Pumps

A true heat pump can work in two directions. It can extract heat from your home or it can extract heat from outside and pump it into your home. A true heat pump offers year round climate control because it both heats and cools – not too shabby if you think about the cost of a furnace and central AC system. And with modern green technology, heat pumps can even be connected to geothermal systems that draw their energy from the earth – saving a tremendous amount of money.

So, back to the main question – should you purchase a heat pump for your Tacoma air conditioning needs? The short answer is “it depends”. For the most part, a heat pump is comparable to the same air conditioning model in terms of energy efficiency and capacity. The major difference is its ability to heat your home. So, if you are interested in ditching the furnace or boiler, it may be a great upgrade. If not, a standard air conditioner can get the job done equally well. For help choosing the right system for your home, give Sound Heating & Air Conditioning Inc. a call!

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Air Conditioning Tip: AC Condensate Problems

July 2nd, 2012

The beauty of air conditioning in Tacoma is that we don’t have to do anything to live in a cool climate even when it’s boiling outside.  Programmed to adjust automatically, modern thermostats make it even easier.

It is very inconvenient therefore (not to mention uncomfortable) when our unit is not functioning properly forcing us to pay attention.  Suddenly over-heated, our first inclination may be to call for help, but often the expensive repair can be accomplished easily or avoided completely.

Air Conditioning 101

The process of conditioning air to a cooler temperature involves rapid evaporation and condensation of chemicals called refrigerants.  These are compounds having properties that allow them to change from liquid to gas and back at low temperatures.

When the liquid evaporates and transforms into gas it absorbs heat.  Compressed tightly together again, the matter condenses back into liquid with a residue of unwanted moist heat that must be released to the outdoors.

Over the course of handling the air to cool it, air conditioners are able to filter dust and dehumidify the air as well.  This release of moisture is why air conditioners have drains.

Condenser Coils

As the heat is removed from the gas, it forms condensation that must be drained from the system.  Tiny particles accumulate along the path, prone to shifting and resettling until they become lodged and can form a significant enough blockage to hamper the efficiency of the unit.  If the drain line becomes blocked, the unit drips or overflows the pan and works its way back into the house, causing damage and potentially mold.

This is when panic is inclined to call for the cavalry.

Easy Fix

A simple act of maintenance performed twice a year and requiring no tools can eliminate the problem. Your Tacoma air conditioning technician will do the following to check and maintain your condensate drain:

On the interior side, they will remove the panel of the unit and find the drain line, usually a plastic tube.  If the pan is full of water, there is a blockage.  On a whole house system, the tech will find where the plastic tube exits the house, making sure that it is above ground and clear to drain away. Then they will flush the line to ensure a clean and free flowing pipe.

To schedule your annual maintenance visit, give Sound Heating & Air Conditioning Inc. a call!

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Air Conditioning Guide: Things to Check on Your Broken AC Before Calling a Professional

June 25th, 2012

A broken air conditioner is a stressful situation, especially since you’re considering whether you need a Puyallup air conditioning professional to come out. No one likes spending the money to have a professional take a look at their system, so before you call anyone, make sure to check these problems. You may be able to fix the problem on your own without spending a dime.

Thermostat

The thermostat is one of the most common problems you’ll have with an air conditioner.  Make sure the thermostat wasn’t knocked out of position and the sensors near your coils are in the right place. Often times, a bumped sensor or a slightly off thermostat can cause this kind of problem and as a result, you’ll be left without steady cooling.

Check Your Filters

Another common problem that can cause issues with your air conditioner is filter clogging. While the system will continue to run with a clogged filter, there are a few issues that might pop up – it could smell funny or you might notice icing on the outside line (a major problem). If you allow the filter to get so clogged as to block the air flow from your system, you can expect a number of problems to crop up.

 Blower Belts

Check the system’s blower belt for damage like cracking, excess slack or general wear. A blower belt that isn’t properly installed or that needs to be replaced will reduce air flow which can result in ice buildup or poor air flow – it will make it harder for your system to maintain a steady temperature.

 Check the Outdoor Unit

Check to make sure nothing is blocking the outdoor unit. Clean the condenser coils and remove any debris that might have built up around the outdoor unit. Often, slowed air flow is caused by nothing more than leaves piled in front of your condenser.

If none of these problems is the culprit or if you fix them all and your system continues to struggle, it is time to call a Puyallup air conditioning professional like Sound Heating!

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