It does the job but stopped working smoothly after a short while.
Marcus F.
✓ Contractor
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Nu-Calgon Bio Fresh (4126-34) is a concentrated foaming coil cleaner for HVAC/R evaporator and condenser coils. Its biodegradable foam penetrates and lifts dirt, grease, and lint, then rinses clean to help restore airflow and heat-transfer efficiency. Supplied as a 1-quart dilutable concentrate for professional coil maintenance.
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It does the job but stopped working smoothly after a short while.
Marcus F.
✓ Contractor
It works, but the instructions were confusing.
Amanda P.
✓ Maintenance Tech
Solid, reliable, and exactly as described. Very happy with this purchase.
Priya X.
✓ HVAC Technician
Exceeded my expectations. Well worth every penny.
Anthony R.
✓ Verified Buyer
Been using this daily for a month with zero issues. Money well spent.
George H.
✓ HVAC Technician
Okay value. Does what it says, just not impressed either way.
Ronald A.
✓ HVAC Technician
It does the job but stopped working smoothly after a short while.
Emily Y.
✓ Homeowner
Okay value. Does what it says, just not impressed either way.
Sarah U.
✓ Homeowner
Okay value. Does what it says, just not impressed either way.
Matthew T.
✓ Verified Buyer