2,500 - 4,300 Liter Rainwater Harvesting System
Rainwater harvesting system complete. Optima 4.3 m3 tank and Wff100 filter

Rainwater harvesting system complete. Optima 4.3 m3 tank and Wff100 filter

Rainwater harvesting system complete. Optima 4.3 m3 tank and Wff100 filter
39.324,38 kr
39.324,38 kr

Incl. VAT
Rainwater harvesting system complete. Optima 3.3 m3 tank and Wff100 filter

Rainwater harvesting system complete. Optima 3.3 m3 tank and Wff100 filter

Rainwater harvesting system complete. Optima 3.3 m3 tank and Wff100 filter
44.585,16 kr
44.585,16 kr

Incl. VAT
Rainwater harvesting system compl. Optima 2.5 m3 (Strong) tank and Wff100 filter

Rainwater harvesting system compl. Optima 2.5 m3 (Strong) tank and Wff100 filter

Rainwater harvesting system compl. Optima 2.5 m3 (Strong) tank and Wff100 filter
41.055,48 kr
41.055,48 kr

Incl. VAT
Complete PE Anchoring Kit for Tanks

Complete PE Anchoring Kit for Tanks

Complete PE Anchoring Kit for Tanks
1.887,50 kr
1.887,50 kr

Incl. VAT
Rainwater harvesting system compl. Sigma 4.3m3 tank and Wff100 filter

Rainwater harvesting system compl. Sigma 4.3m3 tank and Wff100 filter

Rainwater harvesting system compl. Sigma 4.3m3 tank and Wff100 filter
44.246,88 kr
44.246,88 kr

Incl. VAT
Rainwater harvesting system compl. Sigma 3.3m3 tank and Wff100 filter

Rainwater harvesting system compl. Sigma 3.3m3 tank and Wff100 filter

Rainwater harvesting system compl. Sigma 3.3m3 tank and Wff100 filter
37.310,94 kr
37.310,94 kr

Incl. VAT
Rainwater system compl. Sigma (Strong) 2.5m3 tank and Wff100 filter

Rainwater system compl. Sigma (Strong) 2.5m3 tank and Wff100 filter

Rainwater system compl. Sigma (Strong) 2.5m3 tank and Wff100 filter
29.687,50 kr
29.687,50 kr

Incl. VAT
Rainwater harvesting system complete. Multimat 4.3m3 tank and Wff100 filter

Rainwater harvesting system complete. Multimat 4.3m3 tank and Wff100 filter

Rainwater harvesting system complete. Multimat 4.3m3 tank and Wff100 filter
41.356,25 kr
41.356,25 kr

Incl. VAT
Rainwater harvesting system compl. Multimat 3.3m3 tank and Wff100 filter

Rainwater harvesting system compl. Multimat 3.3m3 tank and Wff100 filter

Rainwater harvesting system compl. Multimat 3.3m3 tank and Wff100 filter
32.359,38 kr
32.359,38 kr

Incl. VAT
Rainwater harvesting system compl. Multimat (strong) 2.5m3 tank and Wff100 filter

Rainwater harvesting system compl. Multimat (strong) 2.5m3 tank and Wff100 filter

Rainwater harvesting system compl. Multimat (strong) 2.5m3 tank and Wff100 filter
25.000,00 kr
25.000,00 kr

Incl. VAT
Rainwater harvesting system complete. Optima 4.3 m3 tank and Wff100 filter

Rainwater harvesting system complete. Optima 4.3 m3 tank and Wff100 filter

Rainwater harvesting system complete. Optima 4.3 m3 tank and Wff100 filter
39.324,38 kr
39.324,38 kr

Incl. VAT

5,000 Litre Rainwater Harvesting System
Rainwater system compl. Optima 5 m3 tank and Wff100 filter

Rainwater system compl. Optima 5 m3 tank and Wff100 filter

Rainwater system compl. Optima 5 m3 tank and Wff100 filter
39.324,38 kr
39.324,38 kr

Incl. VAT
Complete PE Anchoring Kit for Tanks

Complete PE Anchoring Kit for Tanks

Complete PE Anchoring Kit for Tanks
1.887,50 kr
1.887,50 kr

Incl. VAT
Rainwater harvesting system compl. Sigma 5.0m3 tank and Wff100 filter

Rainwater harvesting system compl. Sigma 5.0m3 tank and Wff100 filter

Rainwater harvesting system compl. Sigma 5.0m3 tank and Wff100 filter
46.192,19 kr
46.192,19 kr

Incl. VAT
Rainwater harvesting system complete. Multimat 5.0m3 tank and Wff100 filter

Rainwater harvesting system complete. Multimat 5.0m3 tank and Wff100 filter

Rainwater harvesting system complete. Multimat 5.0m3 tank and Wff100 filter
43.162,50 kr
43.162,50 kr

Incl. VAT
Rainwater system compl. Optima 5 m3 tank and Wff100 filter

Rainwater system compl. Optima 5 m3 tank and Wff100 filter

Rainwater system compl. Optima 5 m3 tank and Wff100 filter
39.324,38 kr
39.324,38 kr

Incl. VAT

7,000 Litre Rainwater Harvesting System
Rainwater harvesting system complete Optima 7 m3 tank and Wff100 filter

Rainwater harvesting system complete Optima 7 m3 tank and Wff100 filter

Rainwater harvesting system complete Optima 7 m3 tank and Wff100 filter
63.161,73 kr
63.161,73 kr

Incl. VAT
Rainwater filter upgrade comp. tank set, 7m3+

Rainwater filter upgrade comp. tank set, 7m3+

Rainwater filter upgrade comp. tank set, 7m3+
1.750,00 kr
1.750,00 kr

Incl. VAT
Complete PE anchoring kit for Tanks XL

Complete PE anchoring kit for Tanks XL

Complete PE anchoring kit for Tanks XL
3.070,00 kr
3.070,00 kr

Incl. VAT
Rainwater harvesting system compl. Multimat 7.0m3 tank and Wff100 filter

Rainwater harvesting system compl. Multimat 7.0m3 tank and Wff100 filter

Rainwater harvesting system compl. Multimat 7.0m3 tank and Wff100 filter
53.778,13 kr
53.778,13 kr

Incl. VAT
Rainwater harvesting system compl. Sigma 7.0m3 tank and Wff100 filter

Rainwater harvesting system compl. Sigma 7.0m3 tank and Wff100 filter

Rainwater harvesting system compl. Sigma 7.0m3 tank and Wff100 filter
57.553,13 kr
57.553,13 kr

Incl. VAT
Rainwater harvesting system complete Optima 7 m3 tank and Wff100 filter

Rainwater harvesting system complete Optima 7 m3 tank and Wff100 filter

Rainwater harvesting system complete Optima 7 m3 tank and Wff100 filter
63.161,73 kr
63.161,73 kr

Incl. VAT

10,000 Litre Rainwater Harvesting System
Rainwater harvesting system complete. Optima 10 m3 tank and WFF100 filter

Rainwater harvesting system complete. Optima 10 m3 tank and WFF100 filter

Rainwater harvesting system complete. Optima 10 m3 tank and WFF100 filter
70.523,44 kr
70.523,44 kr

Incl. VAT
Rainwater filter upgrade comp. tank set, 7m3+

Rainwater filter upgrade comp. tank set, 7m3+

Rainwater filter upgrade comp. tank set, 7m3+
1.750,00 kr
1.750,00 kr

Incl. VAT
Complete PE anchoring kit for Tanks XL

Complete PE anchoring kit for Tanks XL

Complete PE anchoring kit for Tanks XL
3.070,00 kr
3.070,00 kr

Incl. VAT
Rainwater harvesting system complete. Multimat 10m3 tank and WFF100 filter.

Rainwater harvesting system complete. Multimat 10m3 tank and WFF100 filter.

Rainwater harvesting system complete. Multimat 10m3 tank and WFF100 filter.
70.235,94 kr
70.235,94 kr

Incl. VAT
Rainwater harvesting system compl. Sigma 10.0m3 tank and Wff100 filter

Rainwater harvesting system compl. Sigma 10.0m3 tank and Wff100 filter

Rainwater harvesting system compl. Sigma 10.0m3 tank and Wff100 filter
76.146,88 kr
76.146,88 kr

Incl. VAT
Rainwater harvesting system complete. Optima 10 m3 tank and WFF100 filter

Rainwater harvesting system complete. Optima 10 m3 tank and WFF100 filter

Rainwater harvesting system complete. Optima 10 m3 tank and WFF100 filter
70.523,44 kr
70.523,44 kr

Incl. VAT

Basement Tank Rainwater Harvesting System 1,100-10,000 Liters
Mounting kit for auxiliary basement tank Dehoust

Mounting kit for auxiliary basement tank Dehoust

Mounting kit for auxiliary basement tank Dehoust
1.605,00 kr
1.605,00 kr

Incl. VAT
Mounting kit for basic cellar tank 1000-4000l Dehoust

Mounting kit for basic cellar tank 1000-4000l Dehoust

Mounting kit for basic cellar tank 1000-4000l Dehoust
2.515,00 kr
2.515,00 kr

Incl. VAT
Basement Tank Follow-Up 3000litres Dehoust

Basement Tank Follow-Up 3000litres Dehoust

Basement Tank Follow-Up 3000litres Dehoust
20.400,00 kr
20.400,00 kr

Incl. VAT
Cellar Tank Basic 3000litres Dehoust

Cellar Tank Basic 3000litres Dehoust

Cellar Tank Basic 3000litres Dehoust
22.012,50 kr
22.012,50 kr

Incl. VAT
BASEMENT TANK - 1100 L "SLAVE"

BASEMENT TANK - 1100 L "SLAVE"

BASEMENT TANK - 1100 L "SLAVE"
6.202,50 kr
6.202,50 kr

Incl. VAT
BASEMENT TANK - 1100 L "BASIC"

BASEMENT TANK - 1100 L "BASIC"

BASEMENT TANK - 1100 L "BASIC"
6.985,00 kr
6.985,00 kr

Incl. VAT
Rainwater system compl. Multimat 2.2 M2 Basement tank & WFF100 filter

Rainwater system compl. Multimat 2.2 M2 Basement tank & WFF100 filter

Rainwater system compl. Multimat 2.2 M2 Basement tank & WFF100 filter
38.775,00 kr
38.775,00 kr

Incl. VAT
Mounting kit for auxiliary basement tank Dehoust

Mounting kit for auxiliary basement tank Dehoust

Mounting kit for auxiliary basement tank Dehoust
1.605,00 kr
1.605,00 kr

Incl. VAT

2,500-10,000 Litre Garden Irrigation Rainwater Harvesting System
Complete PE anchoring kit for Tanks XL

Complete PE anchoring kit for Tanks XL

Complete PE anchoring kit for Tanks XL
3.070,00 kr
3.070,00 kr

Incl. VAT
Complete PE Anchoring Kit for Tanks

Complete PE Anchoring Kit for Tanks

Complete PE Anchoring Kit for Tanks
1.887,50 kr
1.887,50 kr

Incl. VAT
7000L Rainwater Harvesting System for Garden Irrigation

7000L Rainwater Harvesting System for Garden Irrigation

7000L Rainwater Harvesting System for Garden Irrigation
45.928,13 kr
45.928,13 kr

Incl. VAT
5000L Rainwater Harvesting System for Garden Irrigation

5000L Rainwater Harvesting System for Garden Irrigation

5000L Rainwater Harvesting System for Garden Irrigation
25.878,13 kr
25.878,13 kr

Incl. VAT
4300L Rainwater Harvesting System for Garden Irrigation

4300L Rainwater Harvesting System for Garden Irrigation

4300L Rainwater Harvesting System for Garden Irrigation
24.878,13 kr
24.878,13 kr

Incl. VAT
3300L Rainwater Harvesting System for Garden Irrigation

3300L Rainwater Harvesting System for Garden Irrigation

3300L Rainwater Harvesting System for Garden Irrigation
20.625,00 kr
20.625,00 kr

Incl. VAT
2500L Rainwater Harvesting System for Garden Irrigation (strong tank)

2500L Rainwater Harvesting System for Garden Irrigation (strong tank)

2500L Rainwater Harvesting System for Garden Irrigation (strong tank)
22.621,88 kr
22.621,88 kr

Incl. VAT
10,000L Rainwater Harvesting System for Garden Irrigation

10,000L Rainwater Harvesting System for Garden Irrigation

10,000L Rainwater Harvesting System for Garden Irrigation
55.398,44 kr
55.398,44 kr

Incl. VAT
1200L Rainwater Harvesting System for Garden Irrigation

1200L Rainwater Harvesting System for Garden Irrigation

1200L Rainwater Harvesting System for Garden Irrigation
23.750,00 kr
23.750,00 kr

Incl. VAT
Complete PE anchoring kit for Tanks XL

Complete PE anchoring kit for Tanks XL

Complete PE anchoring kit for Tanks XL
3.070,00 kr
3.070,00 kr

Incl. VAT

Service Agreements
Commissioning Review of newly installed Rainwater Harvesting System

Commissioning Review of newly installed Rainwater Harvesting System

Commissioning Review of newly installed Rainwater Harvesting System
3.500,00 kr
3.500,00 kr

Incl. VAT
Gold Service Agreement, annual service, 10 year Guarantee

Gold Service Agreement, annual service, 10 year Guarantee

Gold Service Agreement, annual service, 10 year Guarantee
2.746,00 kr
2.746,00 kr

Incl. VAT
Bronze Service Agreement, annual service & 10% off parts

Bronze Service Agreement, annual service & 10% off parts

Bronze Service Agreement, annual service & 10% off parts
995,00 kr
995,00 kr

Incl. VAT
Silver Service Agreement, annual service, product 3 year Warranty

Silver Service Agreement, annual service, product 3 year Warranty

Silver Service Agreement, annual service, product 3 year Warranty
1.870,00 kr
1.870,00 kr

Incl. VAT
Commissioning Review of newly installed Rainwater Harvesting System

Commissioning Review of newly installed Rainwater Harvesting System

Commissioning Review of newly installed Rainwater Harvesting System
3.500,00 kr
3.500,00 kr

Incl. VAT

Rainwater Filters
WFF 150 Cyclone filter up to 500m2 roof

WFF 150 Cyclone filter up to 500m2 roof

WFF 150 Cyclone filter up to 500m2 roof
4.647,50 kr
4.647,50 kr

Incl. VAT
WFF 100 Cyclone Filter for 200m2 Roof

WFF 100 Cyclone Filter for 200m2 Roof

WFF 100 Cyclone Filter for 200m2 Roof
3.352,50 kr
3.352,50 kr

Incl. VAT
VORTEX FILTER WFF 300

VORTEX FILTER WFF 300

VORTEX FILTER WFF 300
39.650,00 kr
39.650,00 kr

Incl. VAT
FILTER COLLECTOR FOR 87MM DOWNPIPE

FILTER COLLECTOR FOR 87MM DOWNPIPE

FILTER COLLECTOR FOR 87MM DOWNPIPE
1.565,00 kr
1.565,00 kr

Incl. VAT
FILTER COLLECTOR FOR 80MM DOWNPIPE

FILTER COLLECTOR FOR 80MM DOWNPIPE

FILTER COLLECTOR FOR 80MM DOWNPIPE
1.565,00 kr
1.565,00 kr

Incl. VAT
FILTER COLLECTOR FOR 75MM DOWNPIPE

FILTER COLLECTOR FOR 75MM DOWNPIPE

FILTER COLLECTOR FOR 75MM DOWNPIPE
1.565,00 kr
1.565,00 kr

Incl. VAT
FILTER COLLECTOR FOR 110MM DOWNPIPE

FILTER COLLECTOR FOR 110MM DOWNPIPE

FILTER COLLECTOR FOR 110MM DOWNPIPE
1.565,00 kr
1.565,00 kr

Incl. VAT
FILTER COLLECTOR FOR 100MM DOWNPIPE

FILTER COLLECTOR FOR 100MM DOWNPIPE

FILTER COLLECTOR FOR 100MM DOWNPIPE
1.611,25 kr
1.611,25 kr

Incl. VAT
WFF 150 Cyclone filter up to 500m2 roof

WFF 150 Cyclone filter up to 500m2 roof

WFF 150 Cyclone filter up to 500m2 roof
4.647,50 kr
4.647,50 kr

Incl. VAT

Rainwater Management
Sigma4 Self-Priming

Sigma4 Self-Priming

Sigma4 Self-Priming
18.387,50 kr
18.387,50 kr

Incl. VAT
Multimat 407

Multimat 407

Multimat 407
18.312,50 kr
18.312,50 kr

Incl. VAT
Multimat 205

Multimat 205

Multimat 205
18.387,50 kr
18.387,50 kr

Incl. VAT
MAXIMA RAINWATER MANAGEMENT 407

MAXIMA RAINWATER MANAGEMENT 407

MAXIMA RAINWATER MANAGEMENT 407
39.675,00 kr
39.675,00 kr

Incl. VAT
MAXIMA RAINWATER CONTROL 205

MAXIMA RAINWATER CONTROL 205

MAXIMA RAINWATER CONTROL 205
37.437,50 kr
37.437,50 kr

Incl. VAT
OPTIMA PLUS CONTROL SYSTEM

OPTIMA PLUS CONTROL SYSTEM

OPTIMA PLUS CONTROL SYSTEM
30.512,50 kr
30.512,50 kr

Incl. VAT
OPTIMA 5 CONTROL SYSTEM

OPTIMA 5 CONTROL SYSTEM

OPTIMA 5 CONTROL SYSTEM
20.700,00 kr
20.700,00 kr

Incl. VAT
OPTIMA 4 CONTROL SYSTEM

OPTIMA 4 CONTROL SYSTEM

OPTIMA 4 CONTROL SYSTEM
21.212,50 kr
21.212,50 kr

Incl. VAT
CONNECT 8-50 DPA

CONNECT 8-50 DPA

CONNECT 8-50 DPA
67.700,00 kr
67.700,00 kr

Incl. VAT
CONNECT 8-40 DPA

CONNECT 8-40 DPA

CONNECT 8-40 DPA
67.700,00 kr
67.700,00 kr

Incl. VAT
CONNECT 6-40 DPA

CONNECT 6-40 DPA

CONNECT 6-40 DPA
65.475,00 kr
65.475,00 kr

Incl. VAT
CONNECT 14-40 DPA

CONNECT 14-40 DPA

CONNECT 14-40 DPA
75.162,50 kr
75.162,50 kr

Incl. VAT
Sigma4 Self-Priming

Sigma4 Self-Priming

Sigma4 Self-Priming
18.387,50 kr
18.387,50 kr

Incl. VAT

Looking for spare parts?

BrugRegnvand.dk is aimed at private homeowners. If you need technical advice at a professional level, or if you are working on a commercial plant project, you can contact MRAIN directly at mrain.dk.

 → Go to mrain.dk

Frequently Asked Questions

What can I use rainwater for in my home?

Rainwater can be used for toilet flushing, laundry, and garden watering. These are the three largest water consumers in a household, besides baths and showers, and they do not require drinking water quality. Together, this can replace up to half of your water consumption.
Is it safe to wash clothes in rainwater?

Yes. Rainwater is soft water with almost no lime, which is actually an advantage for your washing machine and your clothes.

You use less detergent, and the machine is less burdened by lime deposits. The system filters the water before it reaches the washing machine.
What happens when it hasn't rained for a long time?

Vi vil arbejde hurtigt på at sende din ordre afsted så hurtigt som muligt. Når din ordre er afsendt, modtager du en e-mail med yderligere information. Leveringstider varierer afhængigt af din placering.
Does it require a lot of maintenance?

No. You check the filter a couple of times a year, and the tank is inspected annually. This takes a few minutes and can be compared to the maintenance you already do on your home.
What is a VA approval — and why is it important?

A VA approval is an official Danish system approval issued by ETA-Danmark.

It documents that the entire system (filters, tank, pump, and control) has been tested and approved as a complete solution.

MRAIN is currently the only rainwater harvesting system in Denmark with a valid VA approval.

This gives you assurance that the system complies with building regulations and is continuously quality-controlled by the Danish Technological Institute.