Sound Heating and Air Conditioning Inc. Blog: Posts Tagged ‘Seattle’

What Are Flue Gas Spill Switches?

Monday, October 1st, 2012

While some components of a heating system make sense to the average Olympia homeowner – think blower fan, thermostat and air ducts – others are more esoteric and prone to bouts of head scratching.

So, you may find yourself asking “what the heck is a flue gas spill switch?” Read on for the answer.

As you know, gas heating appliances produce heat by means of combustion. The gas line feeds gas into the appliance, the gas is ignited, and the burning gas produces heat. It’s a simple concept that goes all the way back to our caveman ancestors building fires to keep warm, and it is the same process in gas furnaces, boilers and water heaters.

In addition to producing the cozy heat we love in the winter time, this combustion process also releases gases. Known collectively as “flue gases,” some of these – carbon monoxide being the most notorious – can be very toxic. This is why we have flues or chimneys in our northwestern homes– to give these gases a means of egress.

A flue gas spill switch is designed to shut down the furnace if these gases start seeping out. It is made up of a sensor or series of sensors that detect heat outside the flue, not unlike the flame sensor in your furnace. If flue gases start to escape and pass by the sensor, the sensor heats up and signals the furnace to shut down. This cuts off the power and gas, so that no more flue gases can leak into the home and create a health concern.

If your furnace has been abruptly shutting down, it could be your flue gas spill switch trying to tell you that you have a leaky or cracked flue. If this is the case, you want to have it repaired right away. The constant off and on is not good for the furnace, and more importantly, those flue gases can be exceptionally hazardous to your family’s health.

To schedule a maintenance appointment today, give Sound Heating & Air Conditioning a call!

Tags: Flue Gas Spill Switches, Furnace, Heating, Olympia, Seattle, Tacoma
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Heating Question: Why Is My Air Handler Squealing?

Monday, September 10th, 2012

Unusual noises coming from your expensive Seattle heating system never a good thing; they make you worry that something is wrong.

It’s true that an unusual noise does often mean that something needs to be fixed; however, a noise emanating from your HVAC system does not necessarily mean a major repair. You should always have a technician check out if you suspect a problem with your system, but not all problems are going to be expensive to fix.

One common noise that homeowners notice and complain about is a squealing noise originating in the air handler. Usually, this noise is coming from the fan belt that connects the blower fan and the motor. Over time, the belt can stretch out and become worn or misaligned, which makes it slip and generate that aggravating squealing noise.

So, while the squealing can be annoying and unpleasant, a slipping belt is by no means major. A belt is an inexpensive part and a Seattle heating technician can install it in just a matter of minutes.

As long as the noise is a squealing and not a grinding, this simple fix wil often take care of the problem. If you hear a grinding noise, however, immediately shut the unit down and call a technician. This may mean that your motor bearings are worn out and need to be replaced ASAP before further damage is inflicted on the motor itself.

For heating repairs you need in the Seattle area, give Sound Heating a call today!

Tags: Air Handler, Edgewood, Heating, Heating Repair, Redmond, Seattle
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Air Conditioning Guide: Things You Should Never Do To Your Air Conditioner

Monday, 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!

Tags: Olympia, Renton, Seattle, Thurston County
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AC Question: Can I Choose Environmentally Friendly Coolants?

Monday, 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!

Tags: Air Conditioning, Air Conditioning Installation, Environmentally Friendly, Orting, Seattle, Thurston County
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Air Conditioning Tip: AC Condensate Problems

Monday, 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!

Tags: AC Condensate Drain, AC Condensate Problems, Air Conditioning Maintenance, Air Conditioning Repair, Puyallup, Seattle, Tacoma, Thurston County
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Why Are Clean Filters So Important to AC Efficiency?

Tuesday, February 28th, 2012

Air conditioners cost a lot of money to operate in Seattle – even more when they don’t work at 100% efficiency. So, it is important to perform the various regular air conditioning maintenance tasks that ensure the system uses as little electricity as possible. The first thing on your list (and the easiest) is cleaning those filters.

Keeping Filters Clean

The Department of Energy’s Energy Savers website states that you can reduce your air conditioner’s energy consumption by as much as 15% simply by keeping the air filters clean. Why do they matter so much? Consider the nature of a filter.

The filter on your AC unit is designed to capture any dust, debris and sediment in the air supply. If that dust and sediment was allowed in, not only would it gum up the mechanical workings of the device, it would get into your ductwork and reduce the air quality of your home. So, filters are used to capture such things. However, when a filter gets clogged, the system must work harder to draw the air in. As it works harder, the motor turns faster and more electricity is used.

It takes very little to clog the filter of an AC unit, especially if it is running 24 hours a day for two or three months out of the year. So, it’s best to check your filters once every 30 days regardless of what type of filter you are using.

Which Filters to Check

The main filter on your AC unit should be checked along with any air handler filters and any air cleaner filters you have installed in your system. Another thing to consider is the condition of your home and the area around your outdoor condenser. If you have pets, lots of plants or your condenser is located in a dusty area, you may need to check and change those filters even more often.

Most filters are located along the return length of the ductwork – sometimes in ceiling ducts and walls, though they may also be located in your furnace’s air handler or inside the air conditioning unit. If you have window units or mini splits, the filters are frequently in the unit.

Clean air filters are important for your health, your wallet and the longevity of your AC system. Stay on top of them and you will save money in more ways than you might expect. Please contact Sound Heating if you have any questions.

Tags: Renton, Seattle, Snoqualmie
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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:

Vacuum carpets regularly. Use a vacuum with a HEPA filter and invest in some allergen suppressing bags.
Keep your vents clean. This is also a good maintenance practice to lengthen the life of your ventilation equipment.
Dust hard surfaces and wash bed linens weekly.
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.
Invest in and use an air purifier. Again, make sure to get one with a HEPA filter.
Have your home tested for radon and carbon monoxide. Have smoke, carbon monoxide and radon detectors working properly at all times.
Use a humidifier to keep overly dry air from irritating sinus passages.
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.

Tags: Indoor Air Quality, Olympia, Seattle, Snoqualmie, Thurston County
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Heating System Ventilation 101: Basic Guidelines from Bremerton

Monday, January 2nd, 2012

Maintaining Proper Ventilation for Combustion Systems

Anytime you maintain, retrofit, or replace a gas heating system in your Bremerton home you also need to be concerned with air quality. Combustion air is needed by all oil and gas heating systems to support the combustion process. This air is provided in some homes by unintentional air leaks, or by air ducts that connect to the outdoors. The combustion process creates several byproducts that are potentially hazardous to human health and can cause deterioration in your home. You can protect yourself from these hazards, as well as maintain energy efficiency, by ensuring that your chimney system functions properly and that your gas heating system is properly ventilated. In some cases, installing a sealed-combustion furnace or boiler can also help.

Chimneys

Properly functioning chimney systems will carry combustion byproducts out of the home. Therefore, chimney problems put you at risk of having these byproducts, such as carbon monoxide, spill into your home.

Most older gas furnaces and boilers have naturally drafting chimneys. The combustion gases exit the home through the chimney using only their buoyancy combined with the chimney’s height. Naturally drafting chimneys often have problems exhausting the combustion gases because of chimney blockage, wind or pressures inside the home that overcome the buoyancy of the gases.

Atmospheric, open-combustion furnaces and boilers, as well as fan-assisted furnaces and boilers, should be vented into masonry chimneys, metal double-wall chimneys, or another type of manufactured chimney. Masonry chimneys should have a fireclay, masonry liner or a retrofitted metal flue liner.

Many older chimneys have deteriorated liners or no liners at all and must be relined during furnace or boiler replacement. A chimney should be relined when any of the following changes are made to the combustion heating system:

When you replace an older furnace or boiler with a newer one that has an AFUE of 80% or more. These mid-efficiency appliances have a greater risk of depositing acidic condensation droplets in chimneys, and the chimneys must be prepared to handle this corrosive threat. The new chimney liner should be sized to accommodate both the new heating appliance and the combustion water heater by the installer.

When you replace an older furnace or boiler with a new 90+ AFUE appliance or a heat pump. In this case, the heating appliance will no longer vent into the old chimney, and the combustion water heater will now vent through an oversized chimney. This oversized chimney can lead to condensation and inadequate draft. The new chimney liner should be sized for the water heater alone, or the water heater in some cases can be vented directly through the wall.

Other Ventilation Concerns

Some fan-assisted, non-condensing furnaces and boilers, installed between 1987 and 1993, may be vented horizontally through high-temperature plastic vent pipe (not PVC pipe, which is safely used in condensing furnaces). This type of venting has been recalled and should be replaced by stainless steel vent pipe. If horizontal venting was used, an additional draft-inducing fan may be needed near the vent outlet to create adequate draft. Floor furnaces may have special venting problems because their vent connector exits the furnace close to the floor and may travel 10 to 30 feet before reaching a chimney. Check to see if this type of venting or the floor furnace itself needs replacement. If you smell gases, you have a venting problem that could affect your health. Contact your local utility or your Bremerton heating contractor to have this venting problem repaired immediately.

Chimneys can be expensive to repair, and may help justify installing new heating equipment that won’t use the existing chimney.

Tags: Bremerton, Heating System Installation, Redmond, Seattle, Thurston County, Ventilation
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