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Health & Safety

Nu-Calgon Bio Fresh


Ready-to-use bacteriostat, fungistat and deodorizer based upon chlorine dioxide technology. Recommended for control of bacteria, mold, mildew, fungi and yeast in IAQ applications. Its EPA registration includes application in HVACR ventilating equipment, including coils, condensate pans, filters and duct-work.


Prevents the growth of bacteria which can significantly aggravate or even initiate an allergic response. Oxidizes odors associated with bacteria, mold, mildew, smoke, animals, etc.


Evaporator coils, condensate drain pans, filters and ductwork in air conditioning systems can be an excellent breeding ground for bacteria and mold. Left untreated, it can grow and eventually affect indoor air quality, a major concern of the IAQ movement today. Use of a product like Bio-Fresh cd in a total program such as Nu-Calgon’s IAQ Assurance Program will correct this problem by inhibiting the growth of bacteria or mold.

Microbial Control

Bacteria and mold are everywhere in our environment. For many allergy sufferers, their presence and growth in the air handling system can significantly aggravate or even initiate an allergic response. Bio-Fresh cd can address this by preventing the growth of bacteria, mold, etc. It specifically reacts with the microbial’s cell wall, interfering with and preventing their growth.


The powerful active ingredient in Bio-Fresh cd oxidizes odors associated with bacteria, mold, mildew, smoke, animals, etc. in the air and in air handling units. The product does not cover up or mask the odor with alcohol or perfumes, it eliminates or “oxidizes” the source of the odor, leaving the air fresh and clean.

Toxicity & Safety

An enhanced benefit of Bio-Fresh cd is its low toxicity and safety rating from the EPA. Bio-Fresh cd does not use any environmentally damaging propellants or flammable ingredients, and may be applied to occupied spaces.

Installed Cost


With PSA

Over-the-Counter Cost


Our focus and specialty is quality installation, service and repair of heating and air conditioning systems - both residential and commercial.

For more than 45 years, GHAC, Inc. has been the trusted name in HVAC for customers all across the Tri-State.

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