DHE 18/27 AU 3 Phase Electric Instantaneous Water Heaters
- Standard delivery time: 2-4 business days
- Receive free shipping on orders above $150
Shipping & Delivery
Shipping & Delivery
Shipping Rates
- Free delivery on all orders over $150.
- Flat fee of $10 for North Island orders under $150.
- Flat fee of $15 for South Island orders under $150.
- We can only deliver to physical addresses — unfortunately, P.O. Boxes are excluded.
Exclusions
- Free shipping does not apply to pre-order items.
- Shipping costs for pre-orders will be calculated at the time of your inquiry, based on your location within New Zealand.
- If you require urgent delivery, we may be able to arrange airfreight. Additional charges will apply. Please contact us for details.
Delivery Timeframes
- Standard delivery is usually 2–4 business days (Mon–Fri) from the date of dispatch, excluding public holidays.
- Delivery times may vary depending on the size of the item and your location.
Returns & Refunds
Returns & Refunds
If we send the wrong item, we cover return costs. If you ordered incorrectly, you’ll need to return at your cost.
If you wish to return or exchange an item, please email us at info@waterfilters.co.nz within 7 days of receiving your order to obtain a Return Authorisation Number (RNA). Please do not return your product until you have received this number.
Returns & Exchanges
-
If we send the wrong item (and your order was placed correctly):
We will cover the cost of return shipping. A pre-paid return label will be issued, and the correct item will be dispatched. -
If you ordered the wrong item (and we supplied what was ordered):
You will be responsible for the cost of return shipping. If you would like us to provide a return label, we can do so, but the cost will be deducted from your refund or charged separately. -
All returns (whether for exchange, credit, or refund) must be unused, undamaged, and in saleable condition. Items with signs of use or damage will not be accepted and will be returned to you.
-
We strongly recommend using a tracked courier service for all returns, as we cannot be held liable for parcels lost or damaged in transit.
-
Refunds will be processed via the original form of payment and will cover the cost of the returned item(s) only. Please allow up to 14 business days from receipt of your return for processing.
Cancellations
If you wish to cancel an order, please contact us within 24 hours of placing it. Orders are processed quickly and in some cases may not be able to be cancelled once dispatched. If cancellation is no longer possible, please follow the returns process above once your order arrives.
Faulty Products
If you have received a faulty product, please contact us to arrange a return service.
-
Faulty items (caused by a manufacturing defect, not wear and tear or misuse) will be replaced or refunded at no cost to you, following our assessment.
-
Consumables (e.g. cartridges, lamps, media) are covered for manufacturing defects but not for lifespan variation, as water quality and usage conditions differ.
Warranty
We stand behind the quality of our products and offer the following warranty:
-
Systems and parts (excluding consumables): 2 years from purchase, subject to correct installation and conditions of use.
-
Consumables: Covered only for manufacturing defects (must be reported within 7 days of receipt).
During the warranty period, any approved faulty component (excluding consumables) will be replaced free of charge, subject to stock availability.
To make a warranty claim:
-
Contact us via email or phone.
-
Provide proof of purchase.
-
Obtain a Return Authorisation Number before sending any items back.
All warranty work or returns must be approved before costs are incurred.
Your Consumer Rights
Our goods come with guarantees that cannot be excluded under the Consumer Guarantees Act 1993 (NZ). You are entitled to a replacement or refund for a major failure, and compensation for other reasonably foreseeable loss or damage. You are also entitled to have goods repaired or replaced if they fail to be of acceptable quality and the issue is not a major failure.
Waterfilters.co.nz Guarantee
We are committed to providing quality products, clear after-sales support, and excellent customer service. If something isn’t right, let us know and we’ll work to resolve it promptly.
Description
Description
GENERAL INFO
The DHE AU instant water heaters deliver hot water with precision. Comfort is the number one priority as the DHE AU 18 and DHE 27 AU deliver hot water exactly to the degree. Utilising 4i Technology, the intelligent fully-electronic water heater compensates for fluctuations in pressure and temperature and using its series of sensors it precisely regulates the hot water output. This ensures that you get your requested hot water temperature to the degree.
FEATURES | BENEFITS
- Made in Germany
- Precise hot water temperature up to 60°C with 4i Technology
- Instant and continuous flow of hot water
- Electronically controlled to accurately regulate the output water temperature, compensates for fluctuations in pressure and temperature changes
- Compact space saving design for installation flexibility
- No safe tray, flue or ventilation required
- 7 year full parts and labour domestic warranty*
Product Details
DHE instantaneous water heater - an unfailing guarantee of hot water at exactly the right temperature.
The fully electronic DHE instantaneous water heater provides hot water at the exact temperature you have set - every time. 4i technology guarantees that any factors which would change the outlet temperature are compensated for. This way you can enjoy a shower in comfort, even when someone is washing their hands at the adjacent washbasin.
Technical Data
Model number
DHE 18 AU
DHE 27 AU
Rated output (415V)
19.4kW
28kW
Rated current (415V)
27Amp
40Amp
Phases
3/PE
3/PE
Electrical installation
As per AS/NZS3000
Installation requirements
AS/NZS3500.4.2 & local requirements
Switch on flow rate (minimum flow rate required to switch on the water heater)
2.5L/min
2.5L/min
Permissible operating pressure
1000kPa
1000kPa
Temperature adjustment
20-60°C
20-60°C
IP Rating
IP25
IP25
Height
466mm
466mm
Width
225mm
225mm
Depth
116mm
116mm
Weight (filled with water)
3.2kg
3.2kg
Colour
white
white
Nominal capacity
0.4L
0.4L
Approvals
WaterMark Lic No. WMKA00301, AS3498
For one/several draw off points
Yes/Yes
Yes/Yes
Heating system
Bare wire
Bare wire
Electronic flow rate control
Yes
Yes
Electronic air detection system
Yes
Yes
Accepts pre-heated water
Yes (incoming hot water must not exceed 55°C)
Programmable temperature
Yes
Yes
Downloads
DHE AU Datasheet DHE AU Operation and Installation Guide DHE AU Warranty Serial Number Location 2021
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.