Indoor Air Quality
What Is a MERV Rating?
Minimum Efficiency Reporting Value, 1-20 — how finely an air filter traps particles. Higher isn't automatically better: too high a MERV rating can restrict airflow on a system not designed for it.
This definition is pending sign-off from a licensed HVAC reviewer.
Why It Matters to You
A filter rated higher than your system supports can choke airflow, freeze the coil, or strain the blower — matching MERV to your specific equipment matters more than chasing the highest number available.
Practical Guidance
Check your system's manual or ask during a service visit for the maximum MERV rating it's rated for before upgrading to a denser filter for allergy relief.
MERV Rating Tiers
| Tier | MERV Range | Typical Use |
|---|---|---|
| Standard | 1-4 | Minimal filtration — protects equipment, not air quality |
| Residential | 8-13 | Most common tier for home HVAC systems |
| High-efficiency | 14-16 | Only on systems rated for the added airflow resistance |
See it in context
→ Indoor Air Quality Services
Related Terms
Ready when you are
Let’s get your home comfortable again.
Honest diagnosis, upfront pricing, and a team that actually cares. Call Air Experts or request service online — we'll take it from here. No upselling, no catch.