What Is CIRS?
CIRS (Chronic Inflammatory Response Syndrome) is a condition some physicians — often practicing environmental or functional medicine — associate with prolonged exposure to water-damaged buildings and the biotoxins mold can produce in those conditions.
We're an HVAC and indoor air quality company, not a medical provider — we don't diagnose or treat CIRS, and nothing here is medical advice. What we do specialize in is the building side of the equation: physicians treating CIRS often emphasize that recovery can stall if a patient continues living in a space with an elevated mold burden, which is where verified testing, humidity control, and filtration come in.
If you're working through a CIRS protocol with your doctor, our full guide covers how we support that process — on-site mold testing, medical-grade filtration, humidity control, and post-remediation verification.
How CIRS changes the HVAC conversation
For most households, HVAC is a comfort system. For a CIRS-recovery household, it's an exposure pathway — the machine that either circulates the problem or becomes part of the solution. That reframe changes everything practical: filtration stops being an upgrade and becomes infrastructure; duct material stops being invisible and becomes a primary question (porous duct board absorbs biological material permanently — it cannot be meaningfully cleaned once contaminated); and pressure balance — whether your system quietly pulls air from the attic or crawlspace — becomes something to measure, not assume. This is why generic HVAC advice fails CIRS households: the standard playbook optimizes for temperature, while recovery requires optimizing for what's actually in the air stream, verified with testing rather than promised.
What a CIRS-literate HVAC assessment actually includes
A real assessment is measurement-first: on-site qPCR mold testing with species-level results the same visit, humidity mapped through the home (not just read at the thermostat), duct interiors photographed rather than guessed at, and pressure-balance checks that reveal hidden air pathways. Findings arrive as a written report in the format CIRS-literate physicians work with — ERMI/HERTSMI-2 style — and we're glad to coordinate directly with your practitioner's office. One structural honesty note: we deliberately do not sell mold remediation. The company that finds the problem should never be the company paid to remove it, so our findings fund nothing but your clarity. What we do design is the HVAC side of recovery — filtration, humidity control, duct replacement where material is compromised, and post-remediation verification testing — sequenced with your protocol.