WM18 Plus Smart Tankless Electric Water Heater
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WM18 Plus Smart Tankless Electric Water Heater
Designed for medium-sized homes, the WINTEMP WM18 Plus delivers powerful, continuous hot water for multiple fixtures at the same time. Combining advanced flow control, intelligent self-modulating technology, and smart WiFi connectivity, it provides reliable comfort, stable temperature, and energy-efficient performance for modern living.
Endless Hot Water for Busy Households
The WM18 Plus delivers continuous hot water on demand without the limitations of a storage tank. Designed to support 2–3 points of use, it provides reliable hot water for bathrooms, kitchens, and everyday household activities, ensuring your family's comfort even during peak usage.
Advanced Flow Control Technology
Intelligent flow control continuously balances heating power with water demand, maintaining stable outlet temperatures while optimizing performance. If hot water demand exceeds capacity, the system automatically adjusts water flow to help maintain a comfortable temperature rather than causing sudden temperature fluctuations.
Intelligent Self-Modulating Heating
Advanced self-modulating technology automatically adjusts power consumption according to real-time water flow and inlet temperature. By delivering only the energy required, the WM18 Plus improves efficiency while reducing unnecessary electricity consumption.
Smart WiFi Connectivity
Control your water heater from anywhere using the WINTEMP App. Adjust temperature settings remotely, monitor water flow and energy usage, and enjoy a more convenient smart home experience.
Space-Saving Wall-Mounted Design
Despite its higher heating capacity, the WM18 Plus features a compact wall-mounted design that saves over 50% more installation space compared to traditional tank water heaters. Perfect for utility rooms, garages, basements, and modern homes.
Engineered for Long-Term Reliability
Built with a premium cast aluminum heating system and advanced water-electricity separation technology, the WM18 Plus helps reduce scale buildup and corrosion while delivering dependable, low-maintenance performance for years to come.
Advanced Safety Protection
Your safety is our priority. Multiple built-in protection systems—including leakage protection, overheat protection, and dry-fire protection—work together to ensure reliable operation. ETL certification provides additional confidence for residential installations.
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What Is Covered
This Standard Limited Warranty covers defects in materials or workmanship when the product is installed and operated in accordance with WINTEMP’s written installation instructions and subject to the terms and conditions outlined in this Limited Warranty.
This Limited Warranty applies only to products that are properly installed in the United States and Canada. Improper installation may void this warranty.
WINTEMP strongly recommends that this tankless electric water heater be installed by a licensed, state-qualified contractor who is trained in tankless water heater installations. Improper installation may result in loss of warranty coverage.
How Long Does Coverage Last
Period of Coverage (from date of purchase)
- Full Unit Warranty — 24 Months
- All Other Parts & Components — 36 Months
- Shipping Costs Coverage — 30 Days
How to Obtain Service
To request warranty service under this Limited Warranty, the product owner must contact the WINTEMP Customer Support Team at:
Email: support@wintempshop.com
Whether a repair, replacement, or refund will be provided is entirely at WINTEMP’s sole discretion. Any return for a refund must be approved by the WINTEMP Customer Service Team before the product is shipped back.
Information Required to Request Warranty Service:
- Proof of purchase
- Product serial number
- Photos of the installation
- Photos of the damaged part
Limitation of Warranty Liability
During the warranty period, all repair parts must be genuine WINTEMP parts, and all repairs or replacements must be performed by qualified professionals who have received relevant training.
If a component of the product fails due to a manufacturing defect, WINTEMP may, at its sole discretion, provide a repair, replacement, or refund.
WINTEMP does not authorize any individual or company to assume any obligations or liabilities on its behalf in connection with product replacement.
If WINTEMP determines that the product cannot be repaired, it may replace it with a product of comparable performance and specifications at its sole discretion.
Exclusions from Warranty
The following situations are not covered under this Limited Warranty:
- If the product is not installed or maintained according to WINTEMP’s Installation Manual, or does not comply with applicable federal, state/provincial, or local laws, regulations, codes, or licensing requirements, this warranty will be void.
- Any abuse, misuse, unauthorized modification, negligence, or improper use of the product will void the warranty.
- Damage caused by services performed by third-party providers other than WINTEMP is not covered.
- WINTEMP is not responsible for any labor costs, including installation or removal services associated with a warranty claim.
- Damage resulting from improper installation, including incorrect sizing, pipe length, elevation, condensation drainage, or inadequate airflow, is not covered.
- Damage caused by improper use, including freezing of the unit or surrounding pipes, incorrect sizing for the application, scale buildup, or incorrect gas and/or water pressure, is not covered.
- This product must not be used as a pool or spa heater. Using it for pool or spa heating is considered misuse and will void the warranty.
- Damage caused by the use of non-potable, untreated, or improperly treated well water, or water with a pH level or hardness exceeding 12 grains per gallon (200 mg/L), is not covered.
- If the product’s original serial number has been removed or altered so it cannot be clearly identified, this Limited Warranty will not apply.
Package Comes With
Frequently Asked Questions
Shipping
What countries do you ship to?
What countries do you ship to?
We currently ship to the United States, Canada, Australia and the UK. To enquire about shipping to a different destination, please contact us.
How long will it take to receive my order?
How long will it take to receive my order?
Standard shipping normally takes 3-5 days. Next day shipping is available on all domestic orders (for an additional charge). International shipping times depend on the products and destination (estimated at checkout).
Returns and Refunds
How do I return a product?
How do I return a product?
Items must be returned within 30 days after receiving your order. Items must be returned in the same condition in which they were received, be unworn/unused, have any tags still attached, and include all the original packaging.
How long will it take to receive my refund?
How long will it take to receive my refund?
Refunds are processed within 7 days from when we receive the item(s).
