RF1 Minimum rating:* 50 cfm @ 0.5″ WC [85m3/hr @ 125 Pa] Radon fan to be sized by a certified/licensed radon mitigator.

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.

Should radon fan be inside or outside?

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.

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.

How do I make my radon fan quieter?

The smaller the pipe size drawing air from under the membrane the quieter the air flow noise. To reduce sub-membrane noise, downsize the pipe under the membrane to a 2″ pipe which can move up to 50 cfm or a 1.5 inch pipe that can move up to 35 cfm 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.

How do I choose a radon fan?

  1. Size of the building footprint (in square footage)
  2. Current radon level (long-term test, if possible)
  3. Building type. slab on grade. basement. walkout. tri-level or garden level. crawlspace, etc. mixed (how many sq ft of each type)

Can I put radon fan in basement?

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.

Do radon fans use a lot of electricity?

The radon fans are guaranteed by manufacturers for 3 – 5 years. Their replacement cost, including installation, is usually $300 to $600. Homeowners are aware that the fan must run continuously 24/7, year after year. The typical estimate of the electricity cost is $150 per year.

Article first time published on

Can you vent radon into attic?

Attic installed radon mitigation systems offer the benefit of hidden system components while protecting the radon fan from the elements. In retrofit situations the attic installed system is usually installed through a garage with the radon vent fan in the garage attic.

Can I turn my radon fan off at night?

Your radon fan should never be turned off. It should constantly be running in your home to ensure that the system is working properly. After a radon system installation, a post-mitigation test for radon should be performed within 30 days of install.

Should my radon fan be loud?

There are two noises that are generated by the radon system: air flow and vibration. … Excessive noise and back pressure is created when too much air is moved through the pipe. According to the best standard, a 3” pipe should move no more than 34 CFM before the system is too noisy and loses efficiency.

Do radon fans make noise?

Radon Fans Wear Out Over Time: Don’t wait to replace it But sometimes you might hear it making noise. The fan’s bearings that help to lubricate the motion and reduce the noise start to go bad. This is mainly due to standard wear and tear that happens because the radon mitigation fan runs all the time.

How many amps is a radon fan?

Most radon fans use 1 amp or less of current and do not need a dedicated circuit.

How long do radon fans last?

Fans may last for five years or more (manufacturer warranties tend not to exceed five years) and may then need to be repaired or replaced. Replacing a fan will cost around $200 – $350 including parts and labor. It is a good idea to retest your home at least every two years to be sure radon levels remain low.

How do you vent radon gas from a basement?

A contractor will drill two small test holes in the concrete floor on opposite sides of the basement, then install a vacuum in one and measure air flow with the other. If there is sufficient air movement below the slab, then a radon evacuation stack can be installed with a fan that exhausts to the exterior.

Does a radon fan need to be GFCI protected?

Should you use a GFI in a radon fan installation? The short answer is no. … The National Electrical Code (local codes may vary) requires that GFCI receptacles be installed residentially in bathrooms, garages, outdoors, crawl spaces, unfinished basements, kitchens, laundries and boathouses.

Can a radon fan be installed indoors?

If it’s indoors, the fan must be located in an unfinished attic. Never install the fan in your basement or any living space because, if there’s ever a leak, the fan could pump highly concentrated radon right into your home.

Can you install radon mitigation system yourself?

In most cases, pros charge about $1,500 to install a radon mitigation system, but you can do it yourself for only about $500 in materials. So if you’re fairly handy and have some carpentry, plumbing and electrical skills, you can install your own system in a weekend and save yourself a thousand bucks!

Can I unplug my radon mitigation system?

Your home will be retested to make sure the radon levels have been effectively reduced. Your fan needs to run continually, so don’t turn it off or unplug it. We recommend you check your U-tube once a month to ensure that the fan is working properly.

Does a radon fan need a switch?

Fan is not mounted plumb or level as required; No outdoor weather-proof on/off switch as required by National Mechanical Code; Sloppy caulking of joints and wall penetration; Sub-standard radon system: vent pipe discharge point points down and is parallel to and less than 10 feet sideways from window.

At what level of radon should your house be fixed to reduce radon levels?

EPA recommends fixing your home if the results of one long- term test or the average of two short- term tests show radon levels of 4 pCi/L or higher. With today’s technology, radon levels in most homes can be reduced to 2 pCi/L or below. You also may want to consider fixing if the level is between 2 and 4 pCi/L.

How long does it take to mitigate a house with radon?

How long does a radon mitigation installation take? The radon removal process can be completed in one day. The typical amount of time to install a mitigation system is anywhere from 3-5 hours.

What does a radon detector sound like?

RadonAway RSA1 Radon System Alarm Sensing Modes: Sensing light blinks at 60-second intervals (3 flashes). Audible “beep” sounds and all lights illuminate when “Test” button is pressed.

What does a radon fan do?

A radon fan is designed to mitigate and prevent radon gas from building up in your home. Using negative pressure, a radon fan keeps radon from rising through the foundation and into your home. Using a pipe and radon fan, radon gas is pulled from beneath your home and vented outside.

Why is my radon system beeping?

In our opinion, every radon system should have an alarm. They immediately inform you if your fan stops working with a light and an audible alarm. … Radon airflow alarm lights up and beeps every 30 seconds to warn you that your radon fan is not working.

Does a finished basement increase radon levels?

Radon Gas Problems in Basements Several years after finishing the basement, you might find that the radon level has increased above the EPA’s action limit (4 pCi/L) and must be reduced to make the house marketable.

Does sealing a basement floor reduce radon?

Sealing the basement floor can help reduce the amount of radon entering the home. But just sealing the cracks would be unlikely to reduce those amounts in the long term. Sealing all cracks and applying non-porous, thick epoxy coatings (over 10 MILS dry film thickness) would be a better step.

Does finishing a basement reduce radon?

Radon levels are above recommended EPA levels. Radon levels must be reduced even if you are not finishing your basement. … Because it comes from the ground, radon levels are usually highest in basements.

Do radon mitigation systems work?

Radon reduction systems work. Some radon reduction systems can reduce radon levels in your home by up to 99 percent. Most homes can be fixed for about the same cost as other common home repairs. … Hundreds of thousands of people have reduced radon levels in their homes.