CASPR Transit Spec Sheet

CASPR Transit disinfection unit for vehicles on gray background

Product specs for CASPR Transit, including AC/DC power options, mounting details, coverage range, and maintenance intervals for vehicles. Request Spec Sheet

CASPR Home PRO Elite Spec Sheet

CASPR Home PRO Elite residential HVAC unit on gray background

Specifications for CASPR Home PRO Elite, designed to integrate into residential HVAC systems. Covers sizing, power, and replacement timelines. Request Spec Sheet

The Invisible Threat: Why We Can’t Rely on Symptoms to Detect Contagion

Mother checking daughter's temperature at home, unaware of asymptomatic contagion risks.

The human body is remarkably deceptive when it comes to infectious diseases. We’ve been conditioned to think of illness in terms of visible symptoms: the telltale fever, the persistent cough, the runny nose that signals it’s time to stay home. But this symptom-centric view of contagion represents a dangerous blind spot in our understanding of […]

ASHRAE 2025: The Future of Indoor Air Quality is Taking Shape

Downtown Phoenix skyline with the ASHRAE 2025 Annual Conference logo overlayed.

A few weeks ago, I joined several thousand colleagues in Phoenix, Arizona for the ASHRAE 2025 Annual Conference, one of the two pivotal meetings where the organization conducts its most important business. This year’s conference felt particularly significant as we welcomed our new President, Bil McQuade, and his compelling theme for the 2025-26 ASHRAE Society […]

Beyond Fresh Air: Why ASHRAE’s Ventilation Standards Need Active Air Cleaning

Ductwork layout with building plans illustrating ASHRAE ventilation design.

The COVID-19 pandemic fundamentally changed how we think about indoor air quality. Suddenly, terms like “air changes per hour” and “MERV ratings” entered everyday conversations. But as we’ve learned more about airborne pathogen transmission, a critical question has emerged: Is bringing in fresh outdoor air enough to keep us safe? Recent research suggests the answer […]

Bridging the Gap: How ASHRAE Standards Lead Building Codes and the Case for Early Adoption

Engineers reviewing building design plans to ensure compliance with ASHRAE Standards for indoor air quality and safety.

The relationship between ASHRAE standards and building codes represents one of the most significant dynamics in modern construction and building performance. While building codes establish the minimum legal requirements for construction, ASHRAE standards often serve as the technical foundation that eventually shapes these codes. However, a critical lag time exists between when ASHRAE publishes updated […]

Understanding Pathogen Elimination: A Hierarchy of Resistance

Gloved hand holding petri dish used to study microbes for understanding the pathogen elimination hierarchy in disinfection.

Effective pathogen elimination and control is critical in healthcare settings, food safety, and water treatment. As the lab results demonstrate, different microorganisms exhibit varying levels of resistance to disinfection methods. This resistance hierarchy has important implications for infection prevention strategies.  The Pathogen Elimination Hierarchy  The test results reveal a clear progression from “easiest to kill” […]

The Hierarchy of Controls: A Systematic Approach to Pathogen Management

Diagram illustrating the Hierarchy of Controls: Elimination, Substitution, Engineering Controls, Administrative Controls, and Personal Protective Equipment (PPE).

When it comes to protecting people from pathogens and other workplace hazards, not all control measures are created equal. The Hierarchy of Controls is a systematic approach that prioritizes the most effective strategies for preventing exposure to hazards, including infectious agents.  What is the Hierarchy of Controls?  The Hierarchy of Controls is a framework used […]

Breathe Easy: ASHRAE’s Guidelines for Better Indoor Air

Crowded indoor space with ASHRAE logo, representing efforts toward better indoor air quality.

Ever wonder what makes the air inside buildings healthy to breathe? ASHRAE publishes standards and guidelines for indoor air quality. Here’s what you need to know in plain language.  What Are These Guidelines?  Think of ASHRAE Standard 62.1-2022 as a rulebook for good indoor air in commercial facilities. It sets minimum requirements for ventilation (bringing […]

The Evolution of IAQ Monitoring: Past, Present, and Future

A person holding a smartphone displaying their IAQ monitoring system, connected to a smart thermostat for real-time indoor air quality control.

The Early Days: Temperature-Only Monitoring  If you go back in time, the original indoor air quality (IAQ) sensors only measured temperature and were usually tied into the thermostat to control the HVAC system. These basic IAQ monitoring sensors/thermostats served a single purpose: maintaining comfortable temperatures in indoor spaces. They operated on simple principles detecting when […]