TDX NetZero Pro | TDX3615 (55.04% Efficiency)

TDX NetZero Pro | TDX3615 55.04% eff The Flagship Performer — Absolute Peak Thermal Energy Recovery

The TDX NetZero Pro (TDX3615) is our absolute highest-performing residential drain water heat recovery unit featuring integrated PEX connections. Measuring an impressive 61.5 inches long, this powerhouse is explicitly engineered for projects where maximizing thermal efficiency is the primary mechanical goal. It is the premier specification for custom home builders, mechanical engineers, and sustainability advisors aiming for ultimate carbon reductions.

By capturing falling-film thermal energy from greywater to pre-heat incoming cold water, the TDX NetZero Pro drastically slashes the carbon footprint of domestic hot water delivery. Operating entirely passively, it features zero moving parts, zero electrical requirements, and zero ongoing maintenance.

Intertek Verified Performance Data

• 9.5 LPM / 2.5 GPM Flow Rate: 55.04% Efficiency (10.11 kW / 34,500 BTU/h)

• 7.0 LPM / 1.85 GPM Flow Rate: 60.12% Efficiency (7.93 kW / 27,058 BTU/h)

• 5.5 LPM / 1.45 GPM Flow Rate: 62.77% Efficiency (6.61 kW / 22,554 BTU/h)

Key Technical Advantages

• Direct-Glue ABS Connection: Built with integrated ABS connection hubs, allowing installers to solvent-weld (glue) the unit directly into standard ABS drain stacks using standard cement—completely eliminating the need for separate mechanical couplings.

• Premium Net-Zero Modeling Credits: Delivers a verified 55.04% baseline efficiency at standard flow, scaling all the way up to a massive 62.77% for high-efficiency fixtures. This makes it the highest-yielding PEX-ready upgrade available to clear deep energy targets like BC Step Code Tier 4/5, Passive House, and high-incentive utility programs.

• Self-Scouring Solid Waste Passage: The central core features completely smooth, continuous interior copper walls with zero internal restrictions or baffles. Standard residential solid waste passes through seamlessly with zero clogging risk.

• Factory-Integrated PEX Ports: Features built-in PEX-ready manifold connections, slashing jobsite installation times by eliminating the need for separate copper-to-PEX transition adapters.

• Unrivaled Hot Water Capacity: Reclaims up to 10.11 kW of raw thermal energy, virtually multiplying a home's hot water supply during back-to-back showers and providing tankless systems with an unmatched cold-weather performance boost.

• Dual-Wall Safety Integration: Features a fully certified double-wall separation barrier (CSA B55.2) with a vented leak path, ensuring 100% security for the potable water supply.

• Ultra-Low Pressure Drop: The advanced manifold configuration keeps hydraulic resistance minimal, preserving full-volume shower performance even in low-pressure municipal zones.

• Lifetime Material Integrity: Crafted from premium, high-conductivity copper that delivers up to 30 to 50 years of continuous, passive thermal recycling.

Ideal Applications

• High-Performance Custom Homes: The ultimate mechanical selection for premium custom estates, eco-lodges, and off-grid builds seeking extreme efficiency metrics.

• Net-Zero & Net-Zero Ready Residential: A critical structural component used by forward-thinking energy consultants to offload baseline mechanical heating requirements at the lowest operational cost.

"When your project demands the highest possible thermal recovery and code performance points, the TDX NetZero Pro delivers. It glues directly into the line, integrates with PEX in seconds, and reclaims over half of all wasted shower energy passively."