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GPS Air Soft Ionization Substantially Lowers Mold in Hotel, Apartment & Condos

GPS Air's Needle Point Bipolar Ionization (NPBI®) products are electronic air cleaners noted to neutralize some pathogens, boost filter performance on small particles, and reduce the prevalence of mold spores in the air. In this recent field evaluation, GPS Air's NPBI technology was proven effective at lowering mold spores in a hotel room by over 55%.

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Case Study

Hotels, apartments, and condos have centralized air conditioning systems that are responsible for conditioning
all of the air in the space, including outdoor air that is piped to support dilution and pressurization. Mold spores
coming in from outdoors added to mold growth on wet air conditioning coils, and indoor sources leads to mold
spore circulation in the air. A global resort/hotel operator in the southeastern United States, approached GPS to help
mitigate mold spores (and odors) while lowering potential health risks. The results are clear: NPBI lowered airborne
mold counts and maintained low spore counts.

Proven Effective - Mold Test Results

In March 2026, airborne mold samples in identical hotel rooms showed in room levels higher than outdoor levels. NPBI was installed in Room A. Room B remained unchanged as the control.

March Room A Room B
(Control)		 Outdoor
Spore Count/m³ 1,077 1,376 918

 

30 days later, with guests in the rooms, NPBI lowered spores 37%, and improved vs outdoor air.

June Room A Room B
(Control)		 Outdoor
Spore Count/m³ 673 1,162 897
vs March (37%) (15%) (2%)

 

90 days later, mold spores continued to decline despite a spike in outdoor mold counts.

June Room A Room B
(Control)		 Outdoor
Spore Count/m³ 480 1,156 4,989
vs March (56%) (16%) 443%

 

*Mold samples were collected using air sampling tubes and analyzed by third party laboratories using optical microscopy. Individual results may vary.

Results Summary

56% Lower Levels Start 30 Day 90 Day

Solution Detail

GPS-FC-24-AC units were installed on the heat pump blower housing. Powered by the fan input, NPBI activates whenever the heat pump is running. Soft ionization is directed into the airflow for good distribution within the conditioned air. The NPBI device is silent, out of sight, and self-cleans for 10 years of operation without required maintenance.

The FC-24 is an NPBI product designed for multiple mounting options including fan inlet, interior duct walls or floors.

GPS-FC24™-AC
Auto-Cleaning Soft Ionization System

 

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