Gear guides · updated October 2, 2026
Monitor it before you fix it
The measuring instruments of home health — radon monitors, air quality sensors, CO alarms, hygrometers, water kits — plus the gear that acts on what they find. Three vetted picks per category, what each is for, and the honest notes nobody puts on the box. Guides inform; the screener tells you which categories your home actually needs.
Air
Radon monitors & test kits
Continuous digital monitors and lab-analyzed kits for the one test every Canadian home needs.
Alpha-track long-term kit (C-NRPP-listed) · Airthings Corentium Home 2 · Ecosense RadonEye
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Air
Indoor air quality monitors
PM2.5, CO₂, and humidity numbers for the air you actually breathe — smoke days included.
Airthings View Plus · Aranet4 Home · Amazon Smart Air Quality Monitor
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Air
Air purifiers (HEPA)
True-HEPA units sized to the room — the practical defence on smoke days and the ally during dusty renovations.
Coway AP-1512HH Mighty · Winix 5500-2 · Levoit Core 600S
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Air
Carbon monoxide alarms
CSA-certified alarms — required by Ontario law near sleeping areas in homes with fuel appliances.
First Alert CO615 · Kidde Nighthawk (digital display) · First Alert combination smoke + CO
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Water & moisture
Dehumidifiers & hygrometers
Measure the moisture first ($15–$25), then knock summer basement humidity down to the 30–50% band.
Govee hygrometer (2-pack) · Midea Cube (35–50 pint) · hOmeLabs 50-pint
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Water & moisture
Water test kits
Lab-grade mail-in panels and screening strips — after you've used Ontario's free bacterial testing.
Tap Score mail-in lab panel · Health Metric well water kit · Safe Home lead-in-water test
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How these lists are made
Picks are the category benchmarks — the models that keep earning the recommendation on performance, filter cost, and reliability — with price bands as of October 2, 2026. Measurement comes first: every category links back to the testing guide that tells you whether you need it at all, and the planner folds the right categories into your home's plan.
Some links here are affiliate links — as an Amazon Associate, AuditYourHome earns from qualifying purchases, at no extra cost to you. Picks are chosen on merit; no manufacturer pays for placement, and prices shown are planning bands, not quotes.