EMF Home Inspection: What It Covers & How to Do Your Own

What an EMF home inspection actually covers

A proper EMF inspection is a measurement survey, not an opinion. It should produce numbers for all four exposure categories, taken where people spend time, with the instrument and units recorded:

Category	Unit	Sources checked
Radio frequency	µW/m²	Cell sites, neighbours' and your own Wi-Fi, smart meters, cordless phone bases, Bluetooth, baby monitors
AC magnetic	mG or µT	Wiring errors, panels, subpanels, transformers, motors, power lines
AC electric	V/m or body voltage in mV	Unshielded wiring, lamps, extension cords, bedside electronics
Dirty electricity	mV or GS units	Dimmers, switching supplies, LED drivers, inverters, solar

Rooms are prioritised by hours of occupancy — bedrooms first, then desks and the main living area — and readings are taken at body height in the occupied position, plus at each window for RF.

Do it yourself, room by room

1. Baseline the bedroom at night. This is the measurement that matters most and the one most often skipped. Record RF, magnetic and electric readings at the pillow.
2. Sweep each window for RF with peak hold, holding the meter at arm's length and rotating slowly. Note the peak per window; that is where shielding pays back.
3. Walk the magnetic field slowly through every room and along walls, tracing rising readings back to the panel, a circuit or an appliance.
4. Switch test the electric field: readings with bedside circuits live, then with the breaker off. A large difference means wiring, not devices.
5. Inventory your own transmitters — router, extenders, smart TV, printer, thermostat, doorbell, smart speakers, watches, baby monitors. In most homes, internal sources exceed external ones.
6. Repeat at two times of day and write everything down. Undated readings cannot prove an improvement later.

Instruments: a three-field meter such as the TriField TF2 covers all of this at entry level; a dedicated RF meter plus a gaussmeter gives better resolution; a body-voltage meter (ESM-2, ESMini) is the standard tool for electric-field assessment in beds. See the EMF meter buying guide.

When to hire a professional instead

• You need a written report for a purchase, a landlord, a school or an insurer.
• Readings point at a wiring fault — net current, a shared neutral, or a grounding problem. That is electrician territory, not a shielding purchase.
• The magnetic field is high and the source is outside the property.
• You have shielded and the readings did not move, which usually means the wrong field type was targeted.

Ask any inspector which instruments they use, whether they are in calibration, whether you receive the raw readings, and whether they sell the remedies they recommend.

From findings to fixes

Finding	First action	Product
High RF at one wall or window	Shield that surface	Shielding paint, window film
High RF in a bedroom, external source	Enclose the sleeping area	Shielding fabric, canopies
High magnetic field	Distance, then fix wiring, then shield	Magnetic shielding film
High electric field at the bed	Unplug/reroute, shielded cable, demand switch	Body voltage meters, grounding products
Smart meter	Distance and a shielded wall	Smart meter guide
Your own Wi-Fi	Move it, schedule it, wire what you can	Wi-Fi router guide

Then re-measure in the same positions. To judge what your numbers mean, see safe EMF levels for humans.