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Old 07-16-2020, 06:06 AM   #1
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Is there RFI or EMF Interference from Electric Floor Heating???

We are replacing the flooring in our Class A DP. We are considering adding radiant floor heating. This will replace the gas furnaces as one of the heating systems in the coach. We will also have two roof-top heat-pumps.

Other folks on iRV2 have reported that radiant floor heating works very well, even in cold weather conditions.

The system we are researching is a low voltage (24V DC) that is comprised of thin mats or runners that are installed on top of the subfloor. The floor can then be covered with laminate, tile, engineered wood, or carpet. We are leaning toward laminate or engineered wood.

One topic that I have not seen addressed, so maybe it is not an issue, is possible electronic or radio interference from the electric floor. I would not be happy if, after installing an electric floor and removing the gas furnaces, there was an issue operating our TV's, phones, computers, and other electronic and electrical devices.

Is there any reason to expect any interference (RFI, EMF, etc.) from an electric radiant floor heating system?

Charles and Beverly
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Old 07-16-2020, 06:14 AM   #2
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We have no RFI interference at all from our in floor heating. Granted, ours is 120v instead of the lower voltage you are referring to but there has been no problem at all with in in over three years.

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Old 07-16-2020, 08:04 AM   #3
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I don't see how you could possibly have any kind of RF interference from a radiant floor. JMHO
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Old 07-16-2020, 08:31 AM   #4
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I wouldn't expect any RFI from the heating elements themselves, as they're just resistors. But you need to make sure that the transformer that's providing the 24VDC is clean. You could get some electrical noise from it.

You do realize that if you do this, you won't have any heat unless you're on shore power or running your generator?
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Old 07-16-2020, 10:40 AM   #5
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Originally Posted by FlyingDiver View Post
I wouldn't expect any RFI from the heating elements themselves, as they're just resistors.

You do realize that if you do this, you won't have any heat unless you're on shore power or running your generator?
RFI is more common with AC-powered devices than it is with DC-powered stuff, but the AC/DC converter/transformer is a potential source.

I assume that you have some form of backup heating source other than the floor. You should keep in mind that resistance heating is a rather expensive heating method. It's something to think about if you are at a location where you are paying for electricity.

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Old 07-16-2020, 01:25 PM   #6
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Yes, high current devices can generate RFI if just by inducing currents in surrounding wiring. With most things being digitally processed nowadays the chances of the the things you mentioned being affected is very low. But if you were using any type of analog systems, such as an AM radio, that might be affected.

If a system is generating harmful interference to a licensed radio service it is legally required that the manufacturer correct the issue by providing filters or similar. Practically speaking, some will, others will claim no responsibility. Cheapo LED lights are a significant source of RFI.


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