Most people are now aware that indoor air pollution is an issue of growing concern and increased visibility. Many companies are marketing products and services intended to improve the quality of your indoor air. You have probably seen an advertisement, received a coupon in the mail, or been approached directly by a company offering to clean your air ducts as a means of improving your home's indoor air quality. These services typically -- but not always -- range in cost from $450 to $1,000 per heating and cooling system, depending on the services offered, the size of the system to be cleaned, system accessibility, climatic region, and level of contamination.
Duct cleaning generally refers to the cleaning of various heating and cooling system components of forced air systems, including the supply and return air ducts and registers, grilles and diffusers, heat exchangers heating and cooling coils, condensate drain pans (drip pans), fan motor and fan housing, and the air handling unit housing.
If not properly installed, maintained, and operated, these components may become contaminated with particles of dust, pollen or other debris. If moisture is present, the potential for microbiological growth (e.g., mold) is increased and spores from such growth may be released into the home's living space. Some of these contaminants may cause allergic reactions or other symptoms in people if they are exposed to them. If you decide to have your heating and cooling system cleaned, it is important to make sure the service provider agrees to clean all components of the system and is qualified to do so. Failure to clean a component of a contaminated system can result in re-contamination of the entire system, thus negating any potential benefits. Methods of duct cleaning vary, although standards have been established by industry associations concerned with air duct cleaning. Typically, a service provider will use specialized tools to dislodge dirt and other debris in ducts, then vacuum them out with a high powered vacuum cleaner.
In addition, the service provider may propose applying chemical biocides, designed to kill microbiological contaminants, to the inside of the duct work and to other system components. Some service providers may also suggest applying chemical treatments (sealants or other encapsulants) to seal or cover the inside surfaces of the air ducts and equipment housings because they believe the sealant will control mold growth or prevent the release of dirt particles or fibers from ducts. These practices have yet to be fully researched and you should be fully informed before deciding to permit the use of biocides or sealants in your air ducts. They should only be applied, if at all, after the system has been properly cleaned of all visible dust or debris.
Deciding Whether or Not to Have Your Air Ducts Cleaned
Knowledge about the potential benefits and possible problems of air duct cleaning is limited. Since conditions in every home are different, it is impossible to generalize about whether or not air duct cleaning in your home would be beneficial.
You may consider having your air ducts cleaned simply because it seems logical that air ducts will get dirty over time and should occasionally be cleaned. While the debate about the value of periodic duct cleaning continues, no evidence suggests that such cleaning would be detrimental, provided that it is done properly.
On the other hand, if a service provider fails to follow proper duct cleaning procedures, duct cleaning can cause indoor air problems. For example, an inadequate vacuum collection system can release more dust, dirt, and other contaminants than if you had left the ducts alone. A careless or inadequately trained service provider can damage your ducts or heating and cooling system, possibly increasing your heating and air conditioning costs or forcing you to undertake difficult and costly repairs or replacements.
You should consider having the air ducts in your home cleaned if:
1. There is substantial visible mold growth inside hard surface (e.g., sheet metal) ducts or on other components of your heating and cooling system. There are several important points to understand concerning mold detection in heating and cooling systems:
* Many sections of your heating and cooling system may not be accessible for a visible inspection, so ask the service provider to show you any mold they say exists.
* You should be aware that although a substance may look like mold, a positive determination of whether it is mold or not can be made only by an expert and may require laboratory analysis for final confirmation. For about $50, some microbiology laboratories can tell you whether a sample sent to them on a clear strip of sticky household tape is mold or simply a substance that resembles it.
* If you have insulated air ducts and the insulation gets wet or moldy, it cannot be effectively cleaned and should be removed and replaced.
* If the conditions causing the mold growth in the first place are not corrected, mold growth will recur.
2. Ducts are infested with vermin, e.g. (rodents or insects); or
3. Ducts are clogged with excessive amounts of dust and debris and/or particles are actually released into the home from your supply registers.
Other Important Considerations...
Duct cleaning has never been shown to actually prevent health problems. Neither do studies conclusively demonstrate that particle (e.g., dust) levels in homes increase because of dirty air ducts or go down after cleaning. This is because much of the dirt that may accumulate inside air ducts adheres to duct surfaces and does not necessarily enter the living space. It is important to keep in mind that dirty air ducts are only one of many possible sources of particles that are present in homes. Pollutants that enter the home both from outdoors and indoor activities such as cooking, cleaning, smoking, or just moving around can cause greater exposure to contaminants than dirty air ducts. Moreover, there is no evidence that a light amount of household dust or other particulate matter in air ducts poses any risk to health.
If you think duct cleaning might be a good idea for your home, but you are not sure, talk to a professional. The company that services your heating and cooling system may be a good source of advice. You may also want to contact professional duct cleaning service providers and ask them about the services they provide. Remember, they are trying to sell you a service, so ask questions and insist on complete and knowledgeable answers.
Suggestions for Choosing a Duct Cleaning Service Provider
* To find companies that provide duct cleaning services, check your Yellow Pages under "duct cleaning". Talk to at least three different service providers and get written estimates before deciding whether to have your ducts cleaned. When the service providers come to your home, ask them to show you the contamination that would justify having your ducts cleaned.
* Do not hire duct cleaners who make sweeping claims about the health benefits of duct cleaning -- such claims are unsubstantiated.
* Do not hire duct cleaners who recommend duct cleaning as a routine part of your heating and cooling system maintenance.
* Do not allow the use of chemical biocides or sealants unless you fully understand the pros and the cons.
* Check references to be sure other customers were satisfied and did not experience any problems with their heating and cooling system after cleaning.
* Contact your local consumer affairs or local Better Business Bureau to determine if complaints have been lodged against any of the companies you are considering.
* Interview potential service providers to ensure:
o they are experienced in duct cleaning and have worked on systems like yours;
o they will use procedures to protect you, your pets, and your home from contamination; and
o they comply with air duct cleaning standards and, if your ducts are constructed of fiber glass duct board or insulated internally with fiber glass duct liner, with the North American Insulation Manufacturers Association's (NAIMA) recommendations.
* If the service provider charges by the hour, request an estimate of the number of hours or days the job will take, and find out whether there will be interruptions in the work. Make sure the duct cleaner you choose will provide a written agreement outlining the total cost and scope of the job before work begins.
What to Expect From an Air Duct Cleaning Service Provider
If you choose to have your ducts cleaned, the service provider should:
* Open access ports or doors to allow the entire system to be cleaned and inspected.
* Inspect the system before cleaning to be sure that there are no asbestos-containing materials (e.g., insulation, register boots, etc.) in the heating and cooling system. Asbestos containing materials require specialized procedures and should not be disturbed or removed except by specially trained and equipped contractors.
* Use vacuum equipment that exhausts particles outside of the home or use only high efficiency particle air (HEPA) vacuuming equipment if the vacuum exhausts inside the home.
* Protect carpet and household furnishings during cleaning.
* Use well controlled brushing of duct surfaces in conjunction with contact vacuum cleaning to dislodge dust and other particles.
* Use only soft bristled brushes for fiberglass duct board and sheet metal ducts internally lined with fiberglass. (Although flex duct can also be cleaned using soft bristled brushes, it can be more economical to simply replace accessible flex duct.)
* Take care to protect the duct work, including sealing and re-insulating any access holes the service provider may have made or used so they are airtight.
* Follow standards for air duct cleaning and NAIMA's recommended practice for ducts containing fiber glass lining or constructed of fiber glass duct board.
How to Determine if the Duct Cleaner Did A Thorough Job
A thorough visual inspection is the best way to verify the cleanliness of your heating and cooling system. Some service providers use remote photography to document conditions inside ducts. All portions of the system should be visibly clean; you should not be able to detect any debris with the naked eye. After completing the job, ask the service provider to show you each component of your system to verify that the job was performed satisfactorily.
How to Prevent Duct Contamination
Whether or not you decide to have the air ducts in your home cleaned, committing to a good preventive maintenance program is essential to minimize duct contamination.
To prevent dirt from entering the system:
* Use the highest efficiency air filter recommended by the manufacturer of your heating and cooling system.
* Change filters regularly.
* If your filters become clogged, change them more frequently.
* Be sure you do not have any missing filters and that air cannot bypass filters through gaps around the filter holder.
* When having your heating and cooling system maintained or checked for other reasons, be sure to ask the service provider to clean cooling coils and drain pans.
* During construction or renovation work that produces dust in your home, seal off supply and return registers and do not operate the heating and cooling system until after cleaning up the dust.
* Remove dust and vacuum your home regularly. (Use a high efficiency vacuum (HEPA) cleaner or the highest efficiency filter bags your vacuum cleaner can take. Vacuuming can increase the amount of dust in the air during and after vacuuming as well as in your ducts).
* If your heating system includes in-duct humidification equipment, be sure to operate and maintain the humidifier strictly as recommended by the manufacturer.
To prevent ducts from becoming wet:
Moisture should not be present in ducts. Controlling moisture is the most effective way to prevent biological growth in air ducts.
Moisture can enter the duct system through leaks or if the system has been improperly installed or serviced. Research suggests that condensation (which occurs when a surface temperature is lower than the dew point temperature of the surrounding air) on or near cooling coils of air conditioning units is a major factor in moisture contamination of the system. The presence of condensation or high relative humidity is an important indicator of the potential for mold growth on any type of duct. Controlling moisture can often be difficult, but here are some steps you can take:
* Promptly and properly repair any leaks or water damage.
* Pay particular attention to cooling coils, which are designed to remove water from the air and can be a major source of moisture contamination of the system that can lead to mold growth. Make sure the condensate pan drains properly. The presence of substantial standing water and/or debris indicates a problem requiring immediate attention. Check any insulation near cooling coils for wet spots.
* Make sure ducts are properly sealed and insulated in all non-airconditioned spaces (e.g., attics and crawl spaces). This will help to prevent moisture due to condensation from entering the system and is important to make the system work as intended. To prevent water condensation, the heating and cooling system must be properly insulated.
Should chemical biocides be applied to the inside of air ducts?
Air duct cleaning service providers may tell you that they need to apply a chemical biocide to the inside of your ducts to kill bacteria (germs), and fungi (mold) and prevent future biological growth. Some duct cleaning service providers may propose to introduce ozone to kill biological contaminants. Ozone is a highly reactive gas that is regulated in the outside air as a lung irritant. However, there remains considerable controversy over the necessity and wisdom of introducing chemical biocides or ozone into the duct work.
Little research has been conducted to demonstrate the effectiveness of most biocides and ozone when used inside ducts. Simply spraying or otherwise introducing these materials into the operating duct system may cause much of the material to be transported through the system and released into other areas of your home.
In the meantime...
Before allowing a service provider to use a chemical biocide in your duct work, the service provider should:
1. Demonstrate visible evidence of microbial growth in your duct work. Some service providers may attempt to convince you that your air ducts are contaminated by demonstrating that the microorganisms found in your home grow on a settling plate (i.e., petri dish). This is inappropriate. Some microorganisms are always present in the air, and some growth on a settling plate is normal. As noted earlier, only an expert can positively identify a substance as biological growth and lab analysis may be required for final confirmation. Other testing methods are not reliable.
2. Explain why biological growth cannot be removed by physical means, such as brushing, and further growth prevented by controlling moisture.
If you decide to permit the use of a biocide, the service provider should:
1. Show you the biocide label, which will describe its range of approved uses.
2. Apply the biocide only to uninsulated areas of the duct system after proper cleaning, if necessary to reduce the chances for regrowth of mold.
3. Always use the product strictly according to its label instructions.
While some low toxicity products may be legally applied while occupants of the home are present, you may wish to consider leaving the premises while the biocide is being applied as an added precaution.
Do sealants prevent the release of dust and dirt particles into the air?
Manufacturers of products marketed to coat and seal duct surfaces claim that these sealants prevent dust and dirt particles inside air ducts from being released into the air. As with biocides, a sealant is often applied by spraying it into the operating duct system. Laboratory tests indicate that materials introduced in this manner tend not to completely coat the duct surface. Application of sealants may also affect the acoustical (noise) and fire retarding characteristics of fiber glass lined or constructed ducts and may invalidate the manufacturer's warranty.
Questions about the safety, effectiveness and overall desirability of sealants remain. For example, little is known about the potential toxicity of these products under typical use conditions or in the event they catch fire.
In addition, sealants have yet to be evaluated for their resistance to deterioration over time which could add particles to the duct air.
Most organizations concerned with duct cleaning, do not currently recommend the routine use of sealants in any type of duct. Instances when the use of sealants may be appropriate include the repair of damaged fiber glass insulation or when combating fire damage within ducts. Sealants should never be used on wet duct liner, to cover actively growing mold, or to cover debris in the ducts, and should only be applied after cleaning according to appropriate guidelines or standards.
Jan 14, 2012 | Permalink
Royal LePage predicts further home price appreciation....
Transmitted by CNW Group on : January 12, 2012 06:00
Royal LePage predicts further home price appreciation contrary to recent talk of decline
National real estate price correction not likely until 2013 at the earliest
TORONTO, Jan. 12, 2012 /CNW/ - The Royal LePage House Price Survey and Market Survey Forecast released today showed the average price of a home in Canada increased between 3.6 and 6.1 per cent in the fourth quarter of 2011, compared to the previous year. Royal LePage expects average price growth to continue through 2012 and predicts national average prices to increase by 2.8 per cent by the end of the year.
Despite calls in some quarters for Canadian house prices to soften in 2011, the market proved resilient as demand created by low interest rates and a relatively stable national economy created upward pricing pressure for all housing types surveyed. Further, recent high profile reports forecasting significant house price declines in 2012 are not supportable. Nationally, consumer confidence in the housing market was high in the fourth quarter as real estate brokers witnessed an unusually high quantity of multiple offer situations, including over the holiday season, compared to same period in previous years.
In the fourth quarter, standard two-storey homes rose 4.2 per cent year-over-year to $375,427, while detached bungalows increased 6.1 per cent to $344,392. Average prices for standard condominiums increased 3.6 per cent to $234,680.
"In the recovery period following the 2008-2009 recession, I found myself repeatedly speaking of 'irrational exuberance' in the Canadian housing market," said Phil Soper, president and chief executive of Royal LePage Real Estate Services. "Expectations were too high and the pace of expansion unsupportable. With this report, I find myself in exactly the opposite position. Widespread calls for a major real estate correction in 2012 simply can't be justified. The industry has significant momentum entering the year, and buoyed by the stimulative effect of very low interest rates, we expect the market to continue to expand - albeit at a slower pace."
While 2011 was a very strong year for price growth, over the past five years, including the recessionary period, Canada's average home prices have grown by only 3.5 per cent compounded annually, well below the long term average rate of appreciation. Canada's GDP has also grown modestly over the same period and the economy is expected to expand by approximately two per cent in 2012. While unemployment remains stubbornly higher then pre-recession levels, sustained employment at today's levels in a low interest rate environment can be expected to support continued average house price appreciation across the country.
Canadians remain confident in their real estate investments. Throughout 2011, buyers took advantage of low rates to enter the housing market or move-up to homes that better suited their family's needs or wants. All regions included in the Royal LePage Market Survey Forecast anticipate positive average price growth in 2012. This includes the relatively expensive Toronto and Vancouver regions, where rising home prices have consistently out-paced the other urban centres.
"We believe calls for falling prices and more affordable housing in 2012 are unlikely to materialize," said Soper. "While this will comfort the seventy per cent of Canadians who are homeowners, there is cause for concern when house price growth outpaces increases in wages and salaries for an extended period of time. Coupled with more restrictive mortgage regulations that have made it more difficult to obtain financing, those who aspire to own a home may find it increasingly difficult to enter the housing market and, in some regions, it may leave people out entirely."
Regionally, Royal LePage expects to see cities with commodity-based economies, such as Calgary, Regina and Winnipeg, outperform larger urban centres such as Toronto and Vancouver. Royal LePage has forecast Calgary's average house prices to climb 3.6 per cent in 2012. In 2011, the largest average price increase was seen in Regina, where average prices for standard two-storey homes rose 19.5 per cent year-over-year.
Regional Market Summaries
In Halifax, strong consumer confidence and low interest rates led to healthy year-over-year price appreciation for all three housing types surveyed. Average price gains ranged from 4.5 to 6.7 per cent for the housing types surveyed. At the end of 2012, average house prices in Halifax are forecast to be 3.4 per cent higher than 2011.
First-time buyers and consumer confidence helped push Montreal's prices up in the fourth quarter of 2011. At the end of 2012, average house prices in Montreal are forecast to be 1.3 per cent higher than 2011.
A strong local economy and low interest rates resulted in healthy year-over-year price appreciation in Ottawa with gains ranging from 5.0 to 6.7 per cent. At the end of 2012, average house prices in Ottawa are forecast to be 3.3 per cent higher than 2011.
Lack of inventory in Toronto produced strong year-over-year price appreciation in 2011. Average price gains ranged from 3.4 to 7.2 per cent for the housing types surveyed. Migration and low interest rates also continue to drive real estate prices. At the end of 2012, average house prices in Toronto are forecast to increase 2.6 per cent over 2011.
Immigration and low interest rates produced healthy year-over-year price appreciation in Winnipeg's real estate market with average price gains ranging from 3.7 to 5.0 per cent. At the end of 2012, average house prices in Winnipeg are forecast to be 4.2 per cent higher than 2011.
Lack of inventory and strong demand drove average year-over-year price gains in Regina. Price appreciation ranged from standard condominiums posting a 7.9 per cent gain to standard two-storey homes posting a 19.5 per cent gain, the largest gain among housing types surveyed across Canada. At the end of 2012, average house prices in Regina are forecast to be 5.0 per cent higher than 2011.
Calgary witnessed modest year-over-year price gains in two housing types - standard two-storey homes and standard condominiums, while the detached bungalow rose 6.2 per cent. Lack of inventory for detached bungalows was cited as the reason for the increase. Edmonton, posted modest gains for all three housing types surveyed, which ranged from 1.3 to 3.2 per cent. At the end of 2012, average house prices in Calgary are forecast to increase 3.6 per cent, while Edmonton house prices are expected to increase by 2.6 per cent compared to 2011.
Vancouver continued to experience some of Canada's largest year-over-year price increases ranging from the standard condominiums rising 10.7 per cent to detached bungalows rising 14.1 per cent. At the end of 2012, average house prices in Vancouver are forecast to be 2.3 per cent higher than 2011.
Jan 12, 2012 | Permalink
Hopes and Dreams
Welcome to 2012!
I hope it turns out to be a great year for you and your family.
Speaking of hope, this is traditionally the month when people write down their hopes, dreams, ambitions and goals for the new year - or, at least, they think about them.
What are some of your hopes and dreams for the coming months? Do any of them have to do with your home?
As you know, my service to you doesn't end with a successful transaction. In fact, an important part of my job is to ensure that you continue to be happy with your home and that it continues to meet your changing needs.
So, if you have any questions about the local real estate market, about the current value of your property, or about anything else that is real-estate related, please feel free to give me a call.
Just consider me one of the people who can help make 2012 your best year ever!
All the best,
Jackie
P.S.
My job as a REALTOR is to help you with all your needs - before, during and after the sale.
Jan 7, 2012 | Permalink