HVAC APPLICATIONS

Phosphoric Acid 75% USP Food Grade for HVAC

Industrial-grade phosphoric acid 75% usp food grade for hvac operations. Quart to 275-gallon tote availability, COA with every order, same-day shipping from Taylor, Texas.

24 hr Ship time
COA Per order
20+ Years

HVAC systems accumulate mineral scale, rust, and oxide buildup that reduce heat transfer efficiency and restrict airflow. Phosphoric acid at 75% concentration is one of the most effective chemicals for restoring coil and heat exchanger performance without the aggressive attack on base metals associated with hydrochloric or sulfuric acid alternatives.

Alliance Chemical supplies this product in a 4 x 55-gallon drum bundle, giving HVAC contractors and facility maintenance teams the volume needed for scheduled cleaning cycles across multiple units or job sites.

Appearance Clear, colorless to slightly yellow liquid
Chemical Name Phosphoric Acid (H3PO4)
HandlingPPE RequiredOSHA Regulated
01

Why HVAC Professionals Use Phosphoric Acid

Phosphoric acid offers a distinct advantage in HVAC work: it dissolves calcium carbonate scale, iron oxide (rust), and mineral deposits while being less corrosive to copper, aluminum, and steel than many alternative acids at comparable concentrations. This matters when you're cleaning evaporator coils, condenser coils, and heat exchangers built from these metals.

At 75% concentration, this product can be diluted on-site to match the specific cleaning task — stronger solutions for heavy scale removal, lighter dilutions for routine maintenance washes.

02

Common HVAC Applications

Evaporator and condenser coil cleaning

— Removes hard water scale, calcium deposits, and corrosion products that reduce heat exchange efficiency

Heat exchanger descaling

— Dissolves mineral buildup in boiler tubes, chiller barrels, and plate-and-frame exchangers without damaging metallurgy

Rust and oxide removal

— Strips iron oxide from ductwork, piping, and sheet metal components during fabrication or refurbishment

Metal surface preparation

— Prepares copper, steel, and aluminum surfaces for brazing, soldering, or protective coating application

Cooling tower maintenance

— Addresses scale accumulation on tower fill media and basin surfaces

03

Why Choose Alliance Chemical

Consistent 75% concentration

verified by Certificate of Analysis (COA) with every lot

4-drum bundle pricing

reduces per-gallon cost compared to single-drum orders

Full documentation

— COA and Safety Data Sheet (SDS) provided with every shipment

Additional packaging available

— Also stocked in quart, gallon, 5-gallon pail, single 55-gallon drum, and 275-gallon tote sizes for different project scales

Reliable inventory

— Maintained stock levels to support recurring maintenance schedules

04

Product Specifications

Property Detail
Chemical Name Phosphoric Acid (H3PO4)
Concentration 75%
Appearance Clear, colorless to slightly yellow liquid
Packaging 4 x 55-Gallon Drums
Documentation COA and SDS included
Bulk HVAC Orders

Need a volume quote on Phosphoric Acid 75% USP Food Grade?

Same-day quote turnaround from Taylor, Texas. Drum and tote pricing, dedicated rep, COA on every lot.

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05

Handling and Storage

Phosphoric acid at 75% concentration is a corrosive liquid that requires proper safety protocols in any HVAC work environment:

  • Review the SDS thoroughly before first use and ensure it is accessible on every job site
  • Wear appropriate PPE — chemical-resistant gloves, splash goggles, face shield, and acid-resistant apron at minimum
  • Store drums upright in a cool, dry, well-ventilated area away from incompatible materials (strong bases, metals, oxidizers)
  • Keep containers sealed when not actively dispensing to prevent moisture absorption and concentration changes
  • Use secondary containment for drum storage to comply with local spill prevention regulations
  • Follow all OSHA, EPA, and local regulations governing acid use in HVAC maintenance operations
06

Bulk Ordering

The 4-drum bundle is designed for HVAC operations that go through significant volume — multi-building facility maintenance, commercial HVAC service companies, and industrial plant maintenance teams. For larger recurring needs, contact us about tote (275-gallon) pricing or scheduled delivery programs.

07

Documentation

  • Certificate of Analysis (COA) — Confirms concentration, purity, and lot-specific specifications. Available with shipment or upon request for any lot number.
  • Safety Data Sheet (SDS) — Included with every order. Also available for download or by request before purchase.
08

Contact Alliance Chemical

Need phosphoric acid for your HVAC operation? Contact our team for pricing, volume discounts, or technical questions about concentration and dilution ratios for your specific application.

Get Pricing in One Business Hour

Bulk Phosphoric Acid 75% USP Food Grade for HVAC. Quote turnaround same business day.

Request Quote 512-365-6838 Mon–Fri 8am–5pm CT