What Is the Best Continuous Radon Monitor in Canada?

For continuous monitoring and quick feedback at home, the top-rated digital radon monitors in Canada are the Airthings Corentium Home 2 (and the View Radon) along with the Ecosense RadonEye RD200 and the EcoQube — all of them among the consumer devices evaluated and approved by the Canadian National Radon Proficiency Program (C-NRPP). But no monitor is "the best" in absolute terms: a monitor is a monitoring tool (tracking your levels day after day), while a long-term, lab-analyzed kit is the decision tool when you need to decide whether to mitigate, close a real estate transaction, or support a warranty claim. The two are complementary: the monitor alerts, the lab test confirms.

Read this first. This is general information for homeowners, buyers, sellers and renters in Canada, drawn from public sources at Health Canada, the Canadian National Radon Proficiency Program (C-NRPP) and manufacturers' technical pages. It is not medical, legal or warranty advice. Radon results are presented relative to Health Canada's guideline of 200 Bq/m³; RadonTest.ca coordinates the logistics of testing and does not interpret individual results or provide a health assessment. Health Canada does not "approve" radon measurement devices — it is the C-NRPP that evaluates and lists their performance. Prices are in Canadian dollars and change often; check the current price with the manufacturer.

The Essentials at a Glance

• A continuous radon monitor and a long-term kit don't do the same job. The monitor is a monitoring and awareness tool (quick feedback, tracking over time); the long-term, lab-analyzed alpha-track kit is the decision tool (a number you can act on).
• Both are "radon detectors." A long-term alpha-track kit is a radon detector — just as much as a digital monitor. The real distinction isn't "kit versus detector," but measurement type: integrated and lab-analyzed, or electronic and continuous.
• The main monitors sold in Canada are the Airthings (Corentium Home / Home 2, View Radon, Wave) and the Ecosense (RadonEye RD200, EcoQube), among others. Expect roughly $150 to $400 CAD depending on the model.
• Several of these monitors are evaluated and approved by the C-NRPP in its report on consumer-grade electronic monitors — Corentium Home, Airthings View, Ecosense EcoQube, Ecosense RadonEye RD200, Aranet RN+ and SunRadon Luft appear there as "approved." Always check the current C-NRPP list, because the market also contains unapproved devices and even models recalled by Health Canada.
• Even with a monitor, the C-NRPP recommends leaving it in place for at least 3 months to get a faithful picture of your average. Short-term measurements "can be misleading."
• For a mitigation decision, Health Canada recommends a long-term test of at least 91 days, ideally during the heating season. This is also the type of measurement, lab-analyzed, that a transaction or a warranty claim normally requires.
• The Canadian guideline is 200 Bq/m³ (annual average). At or above that level, Health Canada recommends acting within one year — and sooner if the level is high. No radon level is free of risk.

Continuous Monitor or Long-Term Test: What's the Difference?

This is the distinction that clarifies everything else, so let's settle it first. A continuous radon monitor (also called an electronic radon monitor, or ERM) is a reusable electronic device that takes readings at regular intervals and displays a result — on a screen, in an app, or both. You plug it in or run it on batteries, and it shows you how radon changes hour by hour, day by day. It's an excellent feedback tool: you see the level climb at night, drop when you ventilate, or respond to a change of season.

A long-term alpha-track test works quite differently. It's a small passive dosimeter, with no battery or screen, that you leave in place for at least 91 days. During that time, the alpha particles emitted by radon leave cumulative microscopic tracks on a film inside the dosimeter. You then return it to a C-NRPP-certified lab, which counts those tracks under controlled conditions and calculates your average over the entire exposure period. You get only one number — but it's a rigorous, traceable and defensible number.

Here's the most useful way to think about it:

• The monitor is the alert and tracking tool. It answers "how is my radon changing right now, and what happens when I change something?"
• The lab test is the decision and verification tool. It answers "what is my true long-term average, measured according to Health Canada's protocol, on which I can base a spend, a transaction or a claim?"

They aren't competitors. The monitor alerts you; the lab test confirms. Many informed homeowners own both — a monitor for day-to-day peace of mind, and a long-term, lab-analyzed test whenever a real decision is at stake. For a deeper look at this trade-off, see our sister article long-term radon test vs digital monitor.

The Main Radon Monitors: Airthings, Ecosense and the Others

The Canadian consumer-monitor market is dominated by two brands — Airthings (Norwegian) and Ecosense (American) — plus a few other devices the C-NRPP has evaluated. Here are the models you'll come across most often.

Airthings Corentium Home / Corentium Home 2. The best-known consumer monitor. The original Corentium Home runs on batteries and displays a short- and long-term average right on the screen, with no app required. The Corentium Home 2 is the recent version, with an app and additional sensors. Indicative price of the Corentium Home 2: about $249.99 CAD at Airthings (check the current price).

Airthings View Radon. A monitor that plugs in or runs on batteries (USB-C), displays a short-term average on the screen and the long-term average in the app, with a reading updated every hour. Indicative price: about $250 to $320 CAD [TO VERIFY: current price of the View Radon at Airthings].

Airthings Wave / Wave Radon. A line of air-quality monitors with radon measurement, driven by a Bluetooth app. Indicative price: about $200 to $350 CAD depending on the model [TO VERIFY: current price and Wave models currently offered in Canada]. Note that not all "Wave" models necessarily appear in the C-NRPP report — check the list.

Ecosense RadonEye RD200. A plug-in monitor with a pulsed ion chamber, known for its fast first reading (about 10 minutes) and its OLED screen. It takes a measurement every 10 minutes and displays an hourly moving average; the short- and long-term averages are in the app. Price: $215.00 CAD at Ecosense, shipping included (check the current price).

Ecosense EcoQube (and EcoQube Flex). A compact plug-in monitor, with a light ring indicating the level and detailed data in the app. Same sensor technology as the RadonEye. Indicative price: about $165 to $215 CAD [TO VERIFY: current price of the EcoQube at Ecosense].

Other devices evaluated by the C-NRPP. The Aranet RN+ and the SunRadon Luft also appear as "approved" in the C-NRPP report on consumer monitors.

An important warning, and the main reason to buy carefully: the market contains a quantity of cheap devices, often sold online, that are not approved — and some have been recalled by Health Canada for inaccurate radon detection. The C-NRPP report keeps an explicit list of "not approved" devices. If you buy a monitor, start from the C-NRPP list, not from a retail-site ranking. (On the reliability of the kits themselves, see are radon test kits accurate in Canada.)

Are These Monitors C-NRPP Certified or Listed?

This is where you have to be precise, because the vocabulary is confusing. In Canada, Health Canada does not "approve" radon measurement devices — there is no "Health Canada approved" stamp to look for, and any advertising that claims one misrepresents reality. What exists is the C-NRPP (Canadian National Radon Proficiency Program), the body that evaluates and lists devices and certifies professionals.

The C-NRPP maintains two distinct things:

• Listed professional devices — professional-grade, calibratable monitors intended for certified measurement professionals.
• The report on consumer-grade electronic monitors — an independent, performance-based evaluation of monitors sold to homeowners. Devices are rated "approved" or "not approved."

In the most recent edition of this consumer report, the monitors marked "approved" include the Airthings Corentium Home, the Airthings View, the Aranet RN+, the Ecosense EcoQube, the Ecosense RadonEye RD200 and the SunRadon Luft. The C-NRPP makes one essential point, however: these consumer devices "cannot be professionally calibrated and are not approved by the C-NRPP for use by radon measurement professionals." In other words, "approved" in the consumer sense means the device performed well in the C-NRPP evaluation for home use — not that it is equivalent to a professional-grade measurement or a lab analysis.

A few practical rules:

• Don't assume a model is approved because the brand is. The Corentium Home and the Corentium Home 2 are different devices; a given "Wave" model may or may not appear in the report. Check the C-NRPP list for the exact model [TO VERIFY: precise status of the target model in the current version of the C-NRPP report].
• "Approved" is not "certified for a regulatory decision." An approved consumer monitor is reliable for monitoring at home; it does not replace a long-term, lab-analyzed test when a third party (buyer, insurer, warranty administrator) has to rely on the number.
• Be wary of devices absent from the list. If they are neither "approved" nor "not approved," it simply means they haven't been evaluated — a signal for caution.

When a Monitor Is Enough (and When It Isn't)

A good continuous radon monitor is not a gadget — it delivers real value. It simply isn't suited to every use. Here's how to tell them apart.

A monitor is the right tool when you want to:

• Monitor your levels over time, especially from one season to the next, without starting a new measurement each time.
• See the effect of a change — ventilating, adjusting the ventilation, closing up the house for winter — almost in real time.
• Keep an eye on an already-installed mitigation system day to day, to quickly spot a fan failure or a rise in levels. (A monitor near the system is an excellent "warning light.")
• Watch a newly finished room — a finished basement, a basement bedroom — between formal tests.

A monitor is not enough — you need a long-term, lab-analyzed test — when:

• You're deciding whether to mitigate. Health Canada bases this decision on a long-term average of at least 91 days. Even the C-NRPP, which evaluates the monitors, recommends leaving a monitor in place for at least 3 months and warns that short-term measurements "can be misleading." A reading of a few hours or a few days, however reassuring, doesn't settle the question.
• A real estate transaction is involved. The buyer, the seller or their advisors need an independent, traceable lab result, not an app screenshot.
• A warranty is at stake (for example a radon-related claim under a new-home warranty such as Tarion in Ontario, or the GCR in Quebec). These files normally rest on a long-term, lab-analyzed measurement, carried out according to protocol — not on data from a consumer monitor.
• You want an official record. A dated lab certificate, tied to an address and a measurement period, is the kind of evidence you can keep and pass on.

The C-NRPP goes even further: if you only have access to a digital monitor for less than 91 days, it explicitly recommends following up with a long-term radon test. That is exactly the "alert, then verify" logic: the monitor flags, the long-term test confirms. To dig into this trade-off, see our guide long-term radon test vs digital monitor.

For a Decision, a Sale or a Warranty: The Lab Test

When the stakes stop being "I'm curious" and become "I have to decide," it's the lab-analyzed measurement that governs. Three reasons for this.

First, Health Canada's protocol. To decide whether to reduce radon in a dwelling, Health Canada recommends a long-term test of at least 91 days (about three months), ideally during the heating season, when closed-up homes show their highest levels. This duration exists because radon varies by a factor of 2 to 3 over a single day, and more from one season to the next — only a long measurement averages out this noise and reflects your real exposure.

Next, independence and traceability. An alpha-track dosimeter is analyzed by a C-NRPP-certified lab, which produces a result tied to an address, a measurement period and a chain of custody. It's this independence — the fact that neither you nor the seller has touched the calculation — that makes the number credible in the eyes of a buyer, an insurer or a warranty administrator. The data from a monitor you own, however good, doesn't offer that distance.

Finally, defensibility. A new-home warranty claim — Tarion in Ontario, the Garantie de construction résidentielle (GCR) in Quebec, or an equivalent program elsewhere — relies on a measurement carried out according to the recognized protocol and documented by a lab. (Note: in a framework like Tarion, it's generally the protocol-compliant test result that supports the file, not the identity of the person who placed the dosimeter — always confirm the precise requirements with the program concerned.) An app readout does not clear that bar.

This is precisely the use the RadonTest.ca kit is designed for: a long-term alpha-track dosimeter, analysis by a C-NRPP-certified lab (with a fully-in-Canada analysis option), prepaid return shipping, and a result delivered with clear Health Canada context. It's not a monitor — it's the decision test. If your result exceeds the guideline, the next steps are explained in what to do if your radon level is above 200 Bq/m³.

How Much Does It Cost?

The two tools sit in different price ranges, because they don't do the same job.

• Continuous radon monitors: generally $150 to $400 CAD to buy, once and for all. As a benchmark, the RadonEye RD200 sells for $215.00 CAD and the Corentium Home 2 for about $249.99 CAD (prices to verify). It's a reusable device: you pay for it once and it monitors for years (a typical lifespan of about five years for ion-chamber sensors).
• Long-term, lab-analyzed test: typically $40 to $90 CAD for a complete measurement, lab analysis and return shipping included. It's a per-period measurement: you get a rigorous result for that season, to redo as needed (for example after a major renovation, or every five years after installing a mitigation system).

Which to choose? If your goal is to monitor continuously and the budget allows, a C-NRPP-approved monitor is a good long-term buy. If your goal is to decide, transact or document, it's the lab test you need — and it costs a fraction of the price of a monitor. Many households do both: a long-term lab test to establish the official number, then a monitor to track how things evolve afterward. To compare kits with one another, see the best radon test kit in Canada.

Comparison Table: Continuous Monitor vs Long-Term Lab Test

Frequently Asked Questions

What is the best continuous radon monitor in Canada? Among the consumer monitors evaluated and approved by the C-NRPP, the Airthings Corentium Home / Home 2, the Airthings View Radon and the Ecosense RadonEye RD200 and EcoQube are the most common and best-rated choices. The "best" depends on your need: app and additional sensors (Airthings), fast first reading and real-time accuracy (Ecosense RadonEye). Always check that the exact model appears in the C-NRPP report before buying.

Are Airthings and Ecosense radon monitors approved by Health Canada? Health Canada does not "approve" radon measurement devices — there is no "Health Canada approved" label. It's the C-NRPP that evaluates consumer monitors in its report, where models like the Corentium Home, the Airthings View, the EcoQube and the RadonEye RD200 appear as "approved." That means they performed well for home use — not that they are equivalent to a lab analysis or a professional measurement.

Can a digital radon monitor be used to decide whether I should mitigate my home? Not on its own. Health Canada bases the mitigation decision on a long-term test of at least 91 days, and the C-NRPP recommends leaving any monitor in place for at least 3 months because short-term measurements "can be misleading." A monitor is ideal for monitoring and alerting; to make the call, confirm with a long-term, lab-analyzed test.

Is a radon monitor enough for a home sale or a warranty claim? Usually no. A real estate transaction and a warranty claim (like Tarion in Ontario or the GCR in Quebec) normally rest on a long-term measurement analyzed by a C-NRPP-certified lab, independent and traceable. The data from a consumer monitor you own doesn't offer that independence. Confirm the precise requirements with the program concerned.

What is the difference between a radon monitor and a radon test kit? Both are radon detectors. A monitor is a reusable electronic device that measures continuously and displays the results on a screen or in an app. An alpha-track kit is a passive dosimeter that you leave in place for at least 91 days, then return to a lab that calculates your average. The monitor is the monitoring tool; the lab kit is the decision tool.

How much does a continuous radon monitor cost in Canada? Expect about $150 to $400 CAD depending on the model, as a one-time purchase (for example, the RadonEye RD200 at $215.00 and the Corentium Home 2 at about $249.99; prices to verify). A long-term, lab-analyzed test instead costs $40 to $90 per measurement, analysis and return shipping included.

Does a radon monitor have to stay plugged in permanently? For continuous monitoring, yes — that's the point. But to get a representative average, the C-NRPP recommends leaving the device in place for at least 3 months, in a room occupied at least four hours a day. If you only have a monitor for less than 91 days, the C-NRPP recommends following up with a long-term test.

What radon level should trigger action? Health Canada's guideline is 200 Bq/m³ as an annual average. At or above that level, Health Canada recommends taking corrective measures within one year — and sooner if the level is high. No radon level is free of risk: the lower, the better. See what to do if your level is above 200 Bq/m³.

Monitor with a Monitor, Decide with a Lab Test

A good continuous radon monitor — Airthings or Ecosense, C-NRPP-approved — is an excellent tool for tracking your levels and reacting to changes. But when you have to decide whether to mitigate, close a transaction or support a warranty, it's a long-term, lab-analyzed test, compliant with Health Canada's protocol, that governs. The monitor alerts; the lab test confirms.

Order your lab radon test → — C-NRPP-certified analysis, all-inclusive, prepaid return. A long-term alpha-track dosimeter (91 days and up), with a fully-in-Canada analysis option, and your result delivered with clear Health Canada context.

To put it all in the Quebec context — high-risk regions, testing season and the complete process — see our pillar guide radon in Quebec.

Sources

1. Health Canada — Government of Canada Radon Guideline (200 Bq/m³; corrective measures within one year, sooner if the level is high; no level free of risk; long-term test of at least 91 days), modified 2025-09-24. https://www.canada.ca/en/health-canada/services/health-risks-safety/radiation/radon/government-canada-radon-guideline.html
2. Health Canada — Guide for Radon Measurements in Residential Dwellings (long-term test of at least 91 days; heating-season recommendations), modified 2025-12-22. https://www.canada.ca/en/health-canada/services/publications/health-risks-safety/guide-radon-measurements-residential-dwellings.html
3. Canadian National Radon Proficiency Program (C-NRPP) — Consumer-Grade Electronic Radon Monitors (approved and not-approved devices: Airthings Corentium Home, Airthings View, Aranet RN+, Ecosense EcoQube, Ecosense RadonEye RD200, SunRadon Luft; "leave in place for at least 3 months"; "short-term measurements can be misleading"; consumer devices not calibratable and not approved for professional use; follow up with a long-term test if less than 91 days). https://c-nrpp.ca/consumer-grade-electronic-radon-monitors/
4. C-NRPP — C-NRPP Listed Professional Device. https://c-nrpp.ca/c-nrpp-listed-professional-device/
5. Airthings — Corentium Home 2 product page (indicative price and features; check the current price). https://www.airthings.com/en-ca/corentium-home-2-ca
6. Airthings — View Radon product page (hourly reading; average on the screen and in the app). https://www.airthings.com/en-ca/view-radon
7. Ecosense — RadonEye RD200 product page ($215.00 CAD; pulsed ion chamber; first reading in ~10 minutes; ~5-year lifespan). https://ecosense.io/en-ca/products/radoneye
8. Ecosense — EcoQube product page (features and price; check the current price). https://ecosense.io/en-ca/products/ecoqube
9. Health Canada — Recalls and Safety Alerts (radon detectors recalled for inaccurate detection). https://recalls-rappels.canada.ca/en

The lab analysis is performed independently by a C-NRPP-certified lab. Results are presented relative to Health Canada's guideline of 200 Bq/m³. RadonTest.ca coordinates only the logistics of the kits and the submission of samples — it does not interpret or modify the lab results and does not provide medical, legal or warranty advice. Product names and brands (Airthings, Ecosense, Aranet, SunRadon) belong to their respective owners and are cited for reference; RadonTest.ca does not sell these monitors. Information attributed to Health Canada and the C-NRPP is summarized from the public sources above; prices and the approval status of models change — confirm current details with the responsible body or manufacturer.