什么是DUCT CLEANING，为什么需要DUCT CLEANING，下面就这个问题给大家一个基本常识的普及。
很关键也非常简单的道理就是：您是否每天在家里呼吸着干净而新鲜的空气？（特别是如果家里有孩子和老人！）
1. Should You Get Your Heating/Cooling Ducts Cleaned?
Source from Canada Mortgage and Housing Corporation (CMHC)
A hot air furnace heats and distributes air through its ducting system. The ducts are usually made of sheet metal and are most obvious in your basement, where they hang from the floor joists. The return, or cold air, ducts bring air to the furnace, usually collecting it centrally in the house. The return air trunk duct is the big rectangular duct along the basement ceiling that enters the bottom of the furnace. The supply, or warm air, ducting usually exits from the top of the furnace. It starts with a trunk duct on the basement ceiling. The individual supply ducts, in round or smaller rectangular sheet metal, branch off the trunk duct and go to each room, where they terminate in a floor or wall register. Over time, dust and debris will collect in these ducts, particularly in the return air ducts. You may be wondering whether it would be worthwhile to have these ducts cleaned.
2. How do I know if I need my air ducts cleaned?
Every home requires air duct cleaning at some point. Duct Cleaning Services Provider has the most sophisticated duct cleaning system available to take care of the customers the way they have become accustomed. In new home construction there is a lot of dust that will gather in the ductwork, especially if the furnace system was ran during the winter of construction. The fan and secondary heat exchanger of the furnace can become covered in dust. Most home owners do not know that this will void most warranties on heat exchangers if they were used during construction.
Here are some things that you can check yourself to get a general idea about the state of your air duct system:
1)
Check your air filter. Whatever dirt is on it is only a small portion of the amount of dust in your return air duct. If you think it’s very dirty, then it’d be safe to say that you need your ducts cleaned. Now would also be a good time to replace or clean the filter.
2)
Check your return air vents. If they are on the floor, lift one out and look inside with a flashlight. It should probably be pretty dusty in there. That’s typical. This is a part of your duct system that draws the air from the house back to the furnace before it is cleaned, re-conditioned, and circulated back into the home. If your return air vents are screwed onto the wall, then it’s easier to just look closely at the vent. If you see that it’s covered in dust, then that’s only a small portion of what’s inside the air ducts.
3)
Check your heating vents. These are almost always on the floor, so the vents should be easy to lift out. Look inside. If you see and dirt or cobwebs in there at all, then you should get your ducts cleaned.
If you answer
YES to any of the following questions:
•Does anyone in the house have allergies, asthma, or other respiratory problems?
•Does anyone in your family suffer from headaches, nasal congestion, or sinus problems at night or in the morning?
•Is there or was there ever a smoker in the house?
•Do you have or was there ever a dog, cat, or other pets in the house?
•Do you notice “musty” or “stale” odours when the furnace or air conditioner runs?
•Do you notice dust on the furniture shortly after cleaning?
•Does it seem like there is not enough air flow coming from your vents?
3. What is the Truck Mount Difference?
Some companies start with the portable units. The portable units just can’t get the suction or CFM (Cubic Feet per Minute).
The two most popular portable units are the following:
1) Rotor brush (this machine has less than 700 CFM’s)
2) Portable Negative Machine (less than 3000 CFM's, and once you add the Hepa filter,the suction will decrease to less than 2000 CFM’s).
The Truck Mount system is between 6,000 - 20,000 CFM's. So if you need to get your ducts professional cleaned.
4. What does Duct Cleaning Services Provider do?
HI-TECH duct cleaning method conforms to National Air Duct Cleaning Standard (NADCS)
1. Duct Cleaning Services Provider comes in with a truck mounted unit specially designed to clean air duct & furnaces
2. Their operator/technician will do a "walk-through" with you in your home taking up any concerns
3. Next their technician will expertly cut the access hook up and clean out opening into your duct system where they are required. Connect a large 8" or 10" hose from the Power Vac truck to your heating system
4. Technician now starts the Power Vac truck which places your duct work under extreme suction. The on board compressor provides 250 PSI compressed air continuously, which is used in the cleaning process.
5. With your system under the suction they will open and clean every vents with high pressure air, then they will brush the inside walls, top and bottoms of your main ducts removing the caked on dirt and dust (Brushing improves cleaning quality by removing the dirt, debris, and other contaminants air washing alone leaves behind)
6. Then the ducts will be cleaned with an air whips rods and the reverse skipper line discharging high pressure air in 360 pattern. This will loosen dirt & debris in the main line which will be removed by the vacuum
7. Then vacuum house will be switched to the return main line & the same cleaning procedure will be taken.
8. Duct Cleaning Services Provider will perform a visual inspection of the system before & after cleaning. They have specialized inspection tool & we can always provide you with digital pictures of your duct inside before & after cleaning.
9. Upon completion of the duct cleaning & inspection, they will seal the duct.
10. System with removable Cap-Plugs or removable metal access cover plates.
5. What else you need to know?
1) If the system has Air Conditioning, both sides of the coil will be cleaned (Other companies simply bypass the coil without cleaning it). Air conditioning must be cleaned at the same time as the furnace. A buildup of 1/16 of an inch of dirt on coil can reduce efficiency by up to 30-40%
2) Duct Cleaning Services Provider High-Tech method takes 2-3 hours to complete the average home (2000-2500 Sq. Ft.) as we will send cleaning devices through your entire air duct system.
