ThermoDrain TDH3320B drain water heat recovery unit
ThermoDrain is an easy and comfortable way to save money and help the environment.
ThermoDrain TDH3320B-DR Model benefits/ features
- Enjoy hot showers with peace of mind for the environment and energy costs
- Feel the heat by triples your tank hot water heater capacity for showering
- Built with the thickest and purest copper for safety and longevity
- Safety first with double third party certifications for potable water and efficiency.
- Enjoy significant flow increase on tankless hot water heaters.
- Quick payback, great return on investment
- Compact design/ lightweight
- Maximum efficiency per inch / cost
- Easy and fast DIY installation with 2x 3/4" copper male connectors
- Includes easy to install drain fittings
- 50% efficient units are capable of preheating cold water from 50 F to 75 F @ 2.5 GPM
- Low pressure drop
- Fits onto any 3" drain piping system
- Fits into any 3/4" potable water type piping
*FREE SHIPPING TO ALMOST ANYWHERE IN CANADA AND UNITED STATES, SOME CONDITIONS APPLY.



| Weight | 18.5 lbs |
|---|---|
| Dimensions | 7 × 8 × 38 in |
TDH3320B Excellent value - high efficiency drain water heat recovery system 41%
TDH3320B Excellent value - high efficiency drain water heat recovery system 41%
SKU:TDH3320B-DR-EXP
ThermoDrain TDH3320B
✨ Enhanced Efficiency: Experience a remarkable 41% efficiency rating verified by Intertek.
🛠️ Choose one of three potable water connections: Select 3/4" copper male potable water fittings, factory installed expansion PEX F1960 or crimp PEX F1807 fittings.
🚚 Free Shipping: Check out to see if you qualify for free shipping!
🔧 Flexible Installation Options: While vertical installation maximizes efficiency, a horizontal setup is possible for versatile home integration.
🛠️ Versatile Installation: Install horizontally for flexibility, leading to a slight decrease in efficiency, which is about 2/3rds of the rated efficiency, but overall functionality remains the same.
🌟 Impressive Performance:
- 41.0% Efficiency @ 9.5 L/min (2.5 GPM) in vertical installation.
- 3" inner drain diameter for optimal flow.
- 32" Length for a compact design.
- 7.7 kW (26.3 kBTU) Heat Recovery for efficient operation.
- Lightweight at 15.4 lbs for easy handling and installation.
- Equipped with 2 drain couplings for convenience.
✅ Certifications:
- Efficiency verified to CSA B55.1 standards.
- Safety certified to CSA B55.2 standards. (This unit has a dual wall protection)
📥 Specification Sheet: Download the detailed TDH specification sheet sheet for more information.
Upgrade your hot water heating system with the TDH3320 excellent value with the perfect blend of efficiency, performance, and convenience. Order now and start saving energy and money! 🛒
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ThermoDrain TDH3320B drain water heat recovery unit
ThermoDrain is an easy and comfortable way to save money and help the environment.
ThermoDrain TDH3320B-DR Model benefits/ features
- Enjoy hot showers with peace of mind for the environment and energy costs
- Feel the heat by triples your tank hot water heater capacity for showering
- Built with the thickest and purest copper for safety and longevity
- Safety first with double third party certifications for potable water and efficiency.
- Enjoy significant flow increase on tankless hot water heaters.
- Quick payback, great return on investment
- Compact design/ lightweight
- Maximum efficiency per inch / cost
- Easy and fast DIY installation with 2x 3/4" copper male connectors
- Includes easy to install drain fittings
- 50% efficient units are capable of preheating cold water from 50 F to 75 F @ 2.5 GPM
- Low pressure drop
- Fits onto any 3" drain piping system
- Fits into any 3/4" potable water type piping
*FREE SHIPPING TO ALMOST ANYWHERE IN CANADA AND UNITED STATES, SOME CONDITIONS APPLY.



| Weight | 18.5 lbs |
|---|---|
| Dimensions | 7 × 8 × 38 in |
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