Frequently Asked Questions

Ultraviolet germicidal irradiation (UVGI) is a disinfection method that uses short-wavelength ultraviolet (UV-C) light to kill or inactivate microorganisms by destroying nucleic acids and disrupting their DNA, rendering them harmless. UVGI or Ultraviolet Germicidal Irradiation is a term used by Federal Agencies such OSHA, NIOSH and the CDC when referring to UV-C.

Learn more about UVGI and how it protects the animals in your care.

PetAirapy produces a wide variety of air and surface sanitizing units that house the appropriate UV-C germicidal lamps (depending on the size of the area to be protected). Our UVGI systems remove 99.9% of bacteria and viruses and deliver maximum air and surface protection.

Learn more about our Commercial Solutions for all types of animal care facilities and Residential Solutions for whole-house and portable solutions.

NO, absolutely not. UV has been a known mutagen at the cellular level for more than one hundred years. Ultraviolet germicidal irradiation (UVGI) is a proven, professional-level means of disinfection for government buildings, hospitals and other highly sensitive environments where maintaining sanitary air circulation and surface areas are critical.

Learn more about what UVGI is and how it works, explore case studies dating from 1939, or request our white paper.

PetAirapy specializes exclusively in the animal care industry. Collaborating with reputable microbiologists and mechanical engineers, we developed an exclusive sizing method to deliver the correct amount of UV dosage or energy needed to quickly kill over 99.9% of zoonotic pathogens that can harm the animals in your care.

Request a free Zoonotic UV Analysis (ZUVA) to find out how to optimally protect your animal care business.

The effectiveness of germicidal UV depends on many factors including knowing the type of animal care industry you are in (shelter, boarding, hospital etc.) and the number of animals that you care for in any given time. Importantly, it also also depends on the length of time a microorganism should be exposed to UV, the intensity and wavelength of the UVGI. We make sure to accurately ‘size’ your facility to ensure maximum effectiveness.

Request a free Zoonotic UV Analysis (ZUVA) to find out how to optimally protect your animal care business.

There is no “one size fits all” solution when choosing a UV air and surface disinfection systems.

Furthermore, the array of zoonotic pathogens is considerably different from pathogens that infect and they must be addressed individually to ensure high levels of removal by any given air treatment system. PetAirapy’s proprietary sizing method is specifically adapted for zoonotic pathogens and may result in different design parameters (i.e. lamp power levels, filter size, airflows, etc.) than system sizing methods used for human indoor environments.

As stated in a journal article published by ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) “A UVGI system design today relies on performance data from lamp manufacturers, the experience of system designers, and the recommendations of UVGI equipment manufacturers.”

Most air treatment equipment manufacturers employ detailed methods for estimating the UV dose delivered, which may include using tabulated data, mathematical modeling, or complex formulas. The effectiveness of any UVGI system depends primarily on the UV fluence or dose (μJ/cm2 or J/m2) delivered to the microorganisms which, in turn, depends on the exposure time (sec). The susceptibility of each microbe to UV inactivation must be considered in order to establish the Kill Rate or removal rate.

By addressing the specific pathogens of concern in any animal facility, the PetAirapy design process can ensure that the highest practical removal rates can be achieved and that the risk of zoonotic disease transmission can thereby be minimized.

Request a free Zoonotic UV Analysis (ZUVA) to find out how to optimally protect your animal care business.

NO, all PetAirapy units are ozone-free.

While it’s true that ozone generators have been used in the animal care industry, it has been proven to be extremely dangerous to animals and birds, even at very low concentrations.


When professionally installed inside your HVAC system, PetAirapy’s UV light will naturally and safely break down and clear away the mold and biofilm that over time, build up on coils, plenums, drain pans and ducts. UVGI can lower your energy cost by reducing pressure drop and improve heat transfer increasing cooling capacity.

Click here to download the “Field Study of Energy Use-Related Effects of UV Germicidal Irradiation of Cooling Coil” done by ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) for additional in-depth information.

NO, UV systems work in conjunction with filters.

UV deactivates or kills living microorganisms. Filters will trap larger particles such as dander, pollen, debris, etc. Filters require routine changes in order to maintain effectiveness and keep your HVAC system running smooth.

NO. Once an infected animal coughs, sneezes, or sheds dander, the air inside your facility becomes potentially harmful to all the other animals you care for. While a few infected microorganisms may escape, the majority of those pathogens remain inside, recirculating.
PetAirapy has many options and models for air and surface disinfection systems, including wall and ceiling mounted units.

We will work together to find the right system for you. Request a consultation today!

UV-C lamps/bulbs should be replaced once per year.

Germicidal effectiveness decreases over time. Even though the lamp may still be putting out visible light, it will gradually become ineffective in killing or deactivating germs. In a high-risk business like yours, routine scheduling of lamp changes is a must.

Click here to purchase replacement UV-C lamps for your PetAirapy units.

NO, UV-C lamps do not require cleaning.

However, cleaning is recommended if the lamp has been touched during installation. If you want to wipe them down during the year, you can do so by using 99% pure alcohol and a lint-free cloth.

Replacement UV-C lamps/bulbs should only be purchased directly from PetAirapy.

Once replacement bulbs are purchased, we send a certificate along with a one-year warranty on the bulbs (dropping or damage after delivery voids the warranty).

Click here to purchase UV-C replacement bulbs for your PetAirapy units.

All PetAirapy products come with a 5-year warranty on all parts (except lamps), with the exception of the PA-777 Portable Air Purifier, which comes with a 1-year warranty.
YES! PetAirapy’s UVGI air systems are designed to be installed within your HVAC system or away from animal or human’s direct visibility. Surface disinfection units have a delayed start timer on them allowing ample time to leave the room and close the door before illuminating.

Click here to learn more about UVGI.

YES! However, before transferring to your new HVAC system please contact us with the make and model of your new HVAC unit so we can make sure it is properly sized with the correct PetAirapy UVGI equipment.
UV lamp(s) should be replaced once a year.
It depends on what unit you need. We can design and install our unit inside your HVAC system. Conversely we have wall and ceiling mounts for facilities without ventilation systems. They are silent and completely safe.
It depends on the type of allergies you have. If they are environmental, it should be very effective. Airborne-related allergies are substantially decreased when UV-C is used along with an allergen fitter in HVAC equipment. Remember, when the source of the problem is removed, the symptoms are gone as well.
YES! VOC’s and odors that are suspended in the air will become neutralized as it passes over our UV lamps and Photo Catalytic Oxidation (PCO) grills.