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Insulation & Filters

R-values, MERV ratings, and air quality

5 articles

Calculators

Air Purifier Sizing Guide

We hear this all the time.

Guides & References

HEPA Filter Guide

Not even close. These labels represent wildly different levels of air filtration — and picking the wrong one means you're breathing through a.

Insulation R-Value Chart Per Inch

We hear you. Insulation R-values are scattered across dozens of manufacturer spec sheets, building codes, and half-accurate blog posts.

MERV Rating Chart

MERV rating chart explained: what each MERV level filters, MERV vs MPR vs FPR comparison, and what filter rating you actually need for your HVAC system.

What Is R-Value and How Does Insulation Work

If you've ever shopped for insulation, read a home energy audit, or tried to figure out why one room is always freezing, you've run into R-value.

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