How do you size a radon fan?
How do you size a radon fan?
In order to estimate your fan size for yourself, you’ll need three things:
- Size of the building footprint (in square footage)
- Current radon level (long-term test, if possible)
- Building type. slab on grade. basement. walkout. tri-level or garden level. crawlspace, etc. mixed (how many sq ft of each type)
Does a radon vent need a fan?
A passive radon system is a radon system without the radon exhaust fan. A passive system typically runs from the basement sump crock or drain tile and exhausts through the roof, without the use of an active radon exhaust fan. Passive radon systems rely on what’s referred to as a “stack effect”.
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?
The RP series of radon fans are perfect for most sub-slab radon mitigation systems. RadonAway RP145 comes with a manufacturer’s limited warranty of 5 years. This is also the most powerful fan in terms of CFM, and it can displace 166CFM of air.
Why does radon fan need to be in attic?
Radon fans are better protected from the elements. Radon systems create condensation within the suction and exhaust pipes. In cold environments, this condensation can freeze and effect the life of the radon vent fan. Radon fans inside attic spaces are better protected from the freeze and thaw cycle.
Are radon fans noisy?
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. If your fan is abnormally loud, check your manometer.
Where should a radon fan be placed?
Radon mitigation standards require that the fan to be placed outside of the living space of the home. Another way to define this is any where outside the conditioned air space of the heating and air conditioning system.
Where should a radon fan be installed?
A radon fan must be installed in a non-livable area of the house. This cannot be a basement or crawl-space area!! A radon fan may be installed in a garage, house attic, or outside the house. The radon fan’s exhaust pipe must be run to a minimum height of 10′ from the ground.
How do I know if my radon detector is working?
You can use the u-tube manometer to determine if your system is working. Look at the liquid in the tube. If it is equal on both sides, it is an indication that there is no pressure in the pipe. This means no suction from the fan (far left image) and the radon mitigation system is not working.
Are radon fans loud?
What size radon fan do I Need?
Generally speaking, a 3-inch radon fan will be well suited for a space of 149 square meters or less, while a 4-inch fan will be able to cover a room of no more than 232 square meters. Anything above a 232 square meter space will require a 6 or 8-inch fan. When in doubt, call a licensed and professional radon expert to come take a look.
How to install a Radon fan?
Mark Hole. Using the smoke pencil,mark the hole on the floor where the PVC vent pipe will go through.
Do radon fans need to run constantly?
Do radon fans have to run continuously? 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.
How to install a radon mitigation system?
Make a hole. Using a rotary hammer,drill a hole in the basement slab large enough to receive a 3-inch plastic pipe.
