Harves Technology — Rainwater Wall

Applications

One system. Endless uses.

Harvested rainwater is clean, free, and available wherever your downspout is. Use it across your home, property, or facility.

Garden & Lawn Irrigation

Water your lawn, garden beds, and trees with harvested rainwater. Softer on plants than treated municipal water.

Greywater & Toilet Flushing

Connect harvested water to toilet cisterns and reduce municipal water consumption significantly in homes and complexes.

Agriculture & Vertical Farming

From residential gardens to vertical farming and crop irrigation — the modular system scales to any need.

Hotels, Schools & Public Buildings

Deploy multi-unit systems for hotels, schools, hospitals, and commercial facilities requiring large water reserves.

Emergency & Fire Reserve

Maintain a reliable water reserve for emergencies, fire suppression support, or periods of supply disruption.

Landscaping & Water Features

Feed ponds, water features, drip systems, and large landscaping projects with a continuous harvested water supply.

Harves Rainwater Wall residential installation

The Product

Not a barrel.
A Rainwater Wall.

"More than a water tank — a modular architectural element designed to integrate with your home or building."

The Harves Rainwater Wall mounts flat against any exterior wall or fence. It collects from your downspout, filters debris, and stores water ready to use at any time. Built from UV-stabilized, algae-resistant LLDPE using single-piece rotational moulding — no seams, no welds, no weak points.

225 cm

Width

175 cm

Height

30 cm

Depth

~1,000L

Capacity

80 kg

Empty Weight

32 mm

Pipe Fitting

Canadian Winter Notice: Engineered to operate safely down to −20°C with a built-in 13 cm expansion zone. In regions where temperatures regularly drop below −20°C — including parts of Alberta, Saskatchewan, Manitoba, and Northern Canada — we recommend draining the unit before the coldest months. Contact us for regional guidance.

UV-Stabilized Material

Full protection against sunlight and colour fading for 10+ years.

Algae-Resistant Design

LLDPE treated to prevent algae growth inside and outside.

100% Recyclable LLDPE

Made from 100% recyclable raw material. Environmentally responsible.

10+ Year Lifespan

Structural integrity maintained for over 10 years with proper care.

Fully Modular & Expandable

Link units via 32 mm plumbing. Scale from 1 unit to 50+ anytime.

15-Minute Installation

Wall-mount or ground-mount with included Z & H profile brackets.

How it works

Rain falls.
You capture it.
Use it anytime.

Three steps. No excavation. No permits required. 15 minutes per unit to install.

Connect to your downspout

Attaches to your existing eaves downspout. Wall-mounted with Z or H profile brackets. No special equipment or trades required.

Filter and fill automatically

The inlet filter catches leaves, debris, and particulates before they enter the system. Compatible with multiple pipe diameters and easy to clean each season.

Use on your schedule

Gravity-fed outlet tap or connect an optional pump for pressurized flow. Use for irrigation, cleaning, greywater, or storage — whenever you need it.

Modular System

Start with one.
Scale to any size.

Units link through standard 32 mm plumbing connections and operate as a single system. Expand at any time without reinstalling or replacing anything already in place.

1 Unit

≈ 1,000 L

Residential Homes

Ideal for a home garden, lawn irrigation, car washing, or general outdoor water use.

5 Units

≈ 5,000 L

Villas & Large Properties

For larger homes, acreages, or properties with extensive landscaping and irrigation needs.

50+ Units

50,000+ L

Commercial & Institutional

Schools, apartment buildings, hotels, factories, and public facilities. Contact us for a site assessment.

Pricing

Transparent pricing.
No surprises.

Residential & Small Projects

1 – 9 Units

Rainwater Wall

$1,699 CAD

per unit · shipping calculated separately

1,000L capacity per unit
Inlet filter & fittings included
Z or H profile mounting brackets
Gravity-fed outlet tap
Step-by-step installation guide
Modular — link units together anytime
Email & phone support

10+ Units

Commercial & Bulk

Custom Quote

volume pricing · freight included

Volume pricing for 10+ units
Site assessment & system design
Professional installation available
Schools, strata, hotels, industrial
Ongoing maintenance available
Dedicated project manager

Warranty & Returns

Built to last.
Backed by a 2-year warranty.

Every Harves Rainwater Wall is manufactured to the highest standards and backed by Harves' standard 2-year manufacturer's warranty against manufacturing defects.

2-Year Warranty

Manufacturer's Warranty

✓ Tank, filter, fittings & brackets
✓ Manufacturing defects
✓ Replacement parts included
✓ We cover shipping both ways
✓ Installation not included

Return Policy

Unopened & unused units Returnable within 30 days of delivery. Customer pays return shipping. 15% restocking fee applies.

Opened or used units All sales are final. Defective units are handled under warranty — we'll repair or replace at no cost during the warranty period.

Your rights under Canadian provincial consumer protection legislation are not affected by this warranty. Products must be fit for their intended purpose, and implied warranties on defective goods apply regardless of this policy. For warranty claims, contact us with your order number and photos of the issue.
Read the full Warranty & Return Policy (PDF)

FAQ

Frequently asked questions.

The Harves Rainwater Wall is a patented, modular rainwater harvesting system that mounts flat against any exterior wall or fence. It collects rainfall from your roof via the downspout, filters it, and stores up to 1,000 litres per unit for use in irrigation, cleaning, greywater, and more.

The unit is engineered to operate safely down to −20°C thanks to a built-in 13 cm expansion zone that absorbs ice pressure without cracking. In regions where temperatures regularly drop below −20°C, we recommend draining the unit before the coldest months. Contact us for regional guidance specific to your province.

In most Canadian municipalities, no permit is required for residential rainwater harvesting systems. However, regulations vary by province and municipality. We recommend checking with your local authority before installation. Our team can assist with guidance for your specific location.

Each unit takes approximately 15 minutes to install using the included Z or H profile mounting brackets. The DIY package comes with a full step-by-step guide. Our Installed package includes a certified local technician who handles everything from mounting to downspout connection.

Yes — the Rainwater Wall is fully modular. Units link together through standard 32 mm plumbing connections and operate as a single integrated system. You can start with one unit and add more at any time without replacing or reinstalling anything already in place.

Harvested rainwater is suitable for outdoor irrigation, vehicle washing, surface cleaning, toilet flushing, and industrial uses. It is not intended for drinking without additional treatment. The built-in inlet filter removes leaves, debris, and particulates at the point of collection.

Yes. As the official Canadian distributor, Harves Technology North America ships across Canada. We also serve US customers. Contact us directly for shipping timelines and freight details for your location.

Maintenance is minimal. Clean the inlet filter once or twice per season to remove accumulated leaves and debris. Before winter in colder regions, drain the unit if temperatures regularly drop below −20°C. There are no pumps, electronics, or moving parts in the base system — nothing to service or replace.

The unit is manufactured from UV-stabilized, algae-resistant LLDPE using single-piece rotational moulding — no seams or welds. Under normal conditions, the system is designed for a service life of 20+ years with minimal maintenance.

Yes, the Rainwater Wall can supply non-potable indoor uses such as toilet flushing and laundry. An optional pump kit is available for pressurized delivery. Indoor greywater connections must comply with your local plumbing codes — we recommend working with a licensed plumber for indoor installations.

The Rainwater Wall is designed as an architectural element, not a barrel or tank. It mounts flat against a wall or fence with a slim profile (approximately 17 cm deep). It can be painted to match your exterior and is often mistaken for a decorative wall panel rather than a water storage system.

Several Canadian municipalities and provinces offer rebates, tax credits, or incentive programs for residential rainwater harvesting systems. Programs vary by location — for example, some cities in Alberta and British Columbia offer stormwater credits or green infrastructure rebates. Contact us and we can help you research what's available in your area.

It depends on your roof area and local rainfall. As a rough guide, a 100 m² roof section in Calgary (with ~400 mm annual rainfall) can yield approximately 40,000 litres per year. Even a single unit capturing a fraction of that can supply most residential garden and outdoor cleaning needs through the growing season.

Still have questions?

Our team is happy to help with product questions, site assessments, commercial inquiries, or anything else.

hello@harvestechnology.ca

Phone

+1 403 700 4111

Location

Calgary, Alberta, Canada

Have a question we haven't covered? Email us and we'll be happy to help.

Get Started

Ready to harvest
the rain?

Fill out the form and our team will reach out within 48 hours with pricing, availability, and next steps.

Official Canadian distributor — local support

Payment available in CAD and USD

Shipping across Canada and the United States

Professional installation available in Calgary area

Patented, ISO 9001 & CE certified product

Commercial & institutional quotes available

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Harvest the rain.Preserve water.Save money.

One system. Endless uses.

Not a barrel.A Rainwater Wall.

Rain falls.You capture it.Use it anytime.

Start with one.Scale to any size.

Transparent pricing.No surprises.