Graywater Heat Recovery (DHR) System: GFX

GFX^TMHeat-Xchanger

& Water Heater Booster

Once Again Made In America With Non-Toxic Copper Coils, Drainpipes, Fittings & Manifolds Unlike US & Canadian Knockoffs



ASTM B88 Coil	ASTM B306 Tube

Fig. 1(a) DHR Efficiency (%) vs. Flow Rate (GPM) for 3” GFX models. Click to display 4” graphs & pressure drop.

GFX Makes Electric Space & Water Heating Cheaper & Greener Than Oil, Gas & Propane; Even With Outrageous Electric Rates

Original GFX Outperforms Canadian Knockoffs Without Poisoning Your Family, Customers or Environment

GFX^TM

Passive system for showers and other continuous-flow applications

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Email for: Dealer Info, Technical Information or

Pricing for Less Expensive GFX's Using Utility-Grade Copper Coils Not NSF-61 Certifiable

Residential

Commercial & Volume Discounts

Internet Specials

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Models & Specs

Installation Video

Testimonials

Frequently Asked Questions

GFX Featured in RMI Home Energy Brief #5 "Water Heating" & US DOE's Input to 1997 CADDET Newsletter

GFX-STAR^TM

Active system for baths, dishwashers & batch-flow devices

GFX-STAR Testimonial

Solar and Efficient Water Heating: 2005 DOE Roadmap Includes GFX Technology

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Patent Pending, U.S Patent #4,619,311 – Coils, Tubes, Fittings & Manifolds Certified To

ASTM B88, ASTM B306 & NSF-61 Safety Specifications

Every Gravity Film Heat Exchanger (GFX™) is approved for use with potable water under

ETL & cETL Certification & UL File SA8583 (7/92), which prohibit the use of toxic/recycled-copper that may be found in unlisted knock-offs made by more than one Product-Identity Thief ("PIT")

Protect Your Loved Ones & Environment

NSF-61 Restriction Statement: “Copper Tube (Alloy C12200) is certified by NSF to ANSI/NSF Standard 61 for public water supplies meeting or in the process of meeting the U.S. EPA Lead and Copper Rule (56FR 26460, June 7, 1991). Water supplies with pH less than 6.5 may require corrosion control to limit copper solubility in drinking water.” Don’t settle for less!