What size ducts do radon fans need?
In the HVAC world, fans are always placed on a specified duct size (4″-10″+). Manufacturers can accurately predict how much cfm an inline fan will move in these ducts. However, with radon fans, you’re at the mercy of soil conditions, sub slab fill, suction pit sizing, and much more.
Do radon fans need a U tube reading?
However, with radon fans, you’re at the mercy of soil conditions, sub slab fill, suction pit sizing, and much more. Meet the fan curve: Fan curves tell you how much cfm you’re moving at a given resistance or suction (measured in inches of water column pressure). This is why you’ll often hear us ask you for a U tube reading.
What is a Radon fan curve?
However, with radon fans, you’re at the mercy of soil conditions, sub slab fill, suction pit sizing, and much more. Meet the fan curve: Fan curves tell you how much cfm you’re moving at a given resistance or suction (measured in inches of water column pressure).
What size duct do I need for an inline fan?
In the HVAC world, fans are always placed on a specified duct size (4″-10″+). Manufacturers can accurately predict how much cfm an inline fan will move in these ducts.
How big should my radon fan be?
Radon Fan Types by Total Foundation AreaPIPE SIZE NominalLess than 1600 sq. feetGreater than 2500 sq. feet4 inchUse Radon Fan Type: RP140, RP145, XP151 , XP201 Minimum rating:* 50 cfm @ 0.5″ WC [85m3/hr @ 125 Pa]Radon fan to be sized by a certified/licensed radon mitigator1 more row•Nov 4, 2021
Can you oversize a radon fan?
It is for this reason, that it's impossible to size a radon fan before the building is completed and a radon level has been established. With this information, PDS can help you size a fan by phone.
How do you size a radon pump?
We test and measure. Often the key to getting your radon levels really low, is to create suction under your entire home. Therefore, by measuring both the pressure and the airflow we can determine the number of suction points, the size of the vent pipe and which fan is right for your home.
How much vacuum should a radon system have?
Your radon mitigation's manometer readout should be between 0.5in-1.75in on the Manometer (U shaped- looks like a thermometer). This is NOT the level of Radon in your home. It is simply the amount of vacuum your mitigation system is generating.
What is the most powerful radon fan?
Rn4EC-4 Inline Radon FanRn4EC-4 Radon Fan is the most powerful product on the market for active radon mitigation applications where high suction and high flow are required. It is an excellent solution for high radon levels, poor sub-slab communication, multiple suction points and/or large sub slab footprint.
Should radon fan run constantly?
Retest your home for radon every two to three years. Your radon fan should never be turned off. It should constantly be running in your home to ensure that the system is working properly.
How much power does a radon fan use?
Radon mitigators often use radon fans that are much larger capacity than is needed. This paper reviews the performance of about 180 radon mitigation systems that were installed using a low wattage (14 - 20 watt) radon fan.
Why is my radon fan so loud?
If your radon fan is making a loud humming or whirring noise, there's a chance that it needs replaced. Most fans last 5-10 years, with some making it up to 20. However, it's not uncommon for them to get very loud before they finally quit.
How do you quiet a radon mitigation fan?
Open face fiberglass insulation can be placed on top of the membrane or in the joist cavities above the suction location to dampen the noise. The smaller the pipe size drawing air from under the membrane the quieter the air flow noise.
How long does it take for a radon fan to work?
You will then need to install a system to prevent more radon from getting into your home. Generally speaking, it only takes one to three days to remove the radon from your home, and then it will need to be tested again.
How do I know if my radon fan is working?
How Does A Manometer Work?U-tube fluid levels are different, indicating that your radon fan is running.If the fluid levels in the U- tube are equal, your radon fan is not working.Radon airflow alarm lights up and beeps every 30 seconds to warn you that your radon fan is not working.More items...•
Will a sump pump cover reduce radon?
Sump Pump Seals Among the steps that a sump pump installation company may take in protecting your home from radon is to seal your sump pump. This will reduce radon exposure and be effective in a home with normal levels, but if the radon levels in your home are high, it may not be enough.
When to use a radon fan?
These fans are primarily used when there is drain tile or 4 to 6 inches of gravel under your home. In addition, they’re often used to activate a passive radon reduction system that was installed when your home was being built.
Why is it important to choose the right radon fan?
Knowing how to choose the right radon fan is important, because it’s a large factor in how effective your radon mitigation system is at reducing your family’s risk to lung cancer. Get Your Free Radon Mitigation Estimate.
What is a radon fan?
Moderate Suction Radon Fans. These radon fans are suitable for medium to large homes that have gravel or drain tile under the concrete slab. They can move lots of air and don’t have to suck very hard to do it. That means the material under your home is porous or there might be a lot of cracks and openings in the slab.
Why do radon fans need to be moved?
This is because radon fans need to move a small amount of air in order to stay cool and prevent them from overheating. When we choose the radon fan, we are careful to ensure that it doesn’t exceed the manufacturer’s maximum recommended operating pressure.
How much does a high suction fan add to your electric bill?
High suction fans add $100 to $175 a year to your electric bill.
Is radon a safe gas?
Radon is a radioactive, cancer causing gas and there’s no safe level. The lower you can get it, the better off your family will be. Be sure to choose a qualified radon mitigation contractor that takes the time to do diagnostic testing.
Does exhaust air overpower radon?
If we are just slightly negative, however, the things that exhaust air from your house may, in fact, overpower your radon system and cause radon entry into the house.
High Suction Fans
In contrast, with tight soils like clay and sand it’s best to use a high suction fan. If the soil below your home is tight, you may sometimes need more than one suction point to create vacuum under your whole house.
SYSTEM DESIGN CONSIDERATIONS
1.FAN SEALING. Pro Series Fans are factory sealed; no additional caulk or other materials are required to inhibit air leakage.
Where can I wrap radon in my house?
If the radon fan is located in the attic of the house or garage you can wrap the fan with fiberglass insulation. The air flowing through the fan will maintain the fan temperature.
Should radon fans be run constantly?
Additionally, should radon fan run constantly? The genral answer is Yes. In addition, ground moisture will begin to enter the bearings and motor, causing a pre-mature failure of the fan so it is best to keep the fan running even if you go on an extended vacation. Powering these fans are typically pennies per day.
