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Vivosun 48″ x 20.75″ Seedling Heat Mat Digital Thermostat

Official VIVOSUN Dealer Model: WEB-330103CNJ
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Schedule:Bi-weekly to Monthly
Term:6 weeks, 6 or 12 months
Interest:0% to 35.99% APR*
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Term:Up to 36 months
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Amount:$500 to $10,000
  • 105W element maintains 68-108F for consistent root zone warmth
  • Digital controller uses an external sensor to manage root zone heat in real time
  • 48 x 20.75 inch surface fits multiple standard propagation trays
  • 1-year after-sale service
  • View More Details

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THROUGH THE Cultivator's LENS Hands-On Evaluation

Who This Is For

  • You are scaling up your propagation because smaller mats cannot keep up with high tray volume.
  • You are adding a digital controller because manual monitoring is too imprecise for delicate germination stages.

What We Found

  • This 48 inch length is the sweet spot for side-by-side trays without any awkward cold spots at the edges.
  • We like how the probe cord is long enough to reach the center of the tray without pulling the controller lopsided.

What Users Say

  • Nursery owners who switched to this combo say they stopped losing entire batches to overnight temperature crashes.
  • Users propagating at scale say the even heating across the mat means they no longer have to rotate trays manually.

Vivosun 48″ x 20.75″ Seedling Heat Mat Digital Thermostat

Struggling to maintain consistent temperatures for large-scale seed starting and propagation? The Vivosun 48″ x 20.75″ Seedling Heat Mat with Digital Thermostat delivers the professional-grade performance you need. This system is engineered for serious growers and nurseries, ensuring optimal root zone temperatures for faster germination and healthier plant development across extensive setups. For growers with different space requirements, Vivosun also offers a more compact 20" x 20.75" heat mat.

The powerful 105-watt heating element provides uniform warmth over the entire surface, raising the temperature 10-20°F above the ambient room temperature. Paired with the precise digital thermostat, you can easily dial in and maintain any temperature between 68-108°F (20-42°C). Built with an ultra-durable, water-resistant design that exceeds MET safety standards and a service life of over 30,000 hours, this combo from VIVOSUN is a reliable foundation for any serious propagation effort.

What's Included

  • 1 x Vivosun 48″ x 20.75″ Seedling Heat Mat
  • 1 x Digital Thermostat Controller with Sensor Probe

Features

🌡️
Precise Temperature Control

Dial in the perfect temperature from 68-108°F for optimal germination.

🌿
Expansive Growing Area

The large 48" x 20.75" surface accommodates multiple seed trays with ease.

Reliable & Efficient Heat

105W system provides consistent warmth, raising the root zone 10-20°F above ambient.

💧
Built for Durability

Water-resistant and built with fortified connections for long-term, rigorous use.

⚙️
Simple 3-Button Interface

Get started in seconds with an intuitive controller for easy temperature setting.

🛡️
Certified Safety

Exceeds MET safety standards, giving you peace of mind during operation.

Specifications

Specification Value
Size 48″W x 20.75″L
Voltage 120V - AC
Wattage 105 Watts
Temperature Set 0-40°C (32-104°F)
Insulation Resistance ≥100MΩ500Vdc
Service Life ≥30000H

Warranty

This product is covered by a 1-year after-sale service, including a free return within 30 days of delivery. Your investment is protected with comprehensive warranty coverage and dedicated customer support.

FAQs

What is the ideal temperature range for seed germination?+

Most seeds germinate best in a temperature range of 70-85°F (21-29°C). This heat mat allows you to precisely set and maintain temperatures within this optimal range, significantly improving germination speed and success rates. For more details on maintaining the perfect climate, see our grow room temperature and humidity guide.

Can I use this heat mat for anything other than seedlings?+

Absolutely. This mat is excellent for propagating cuttings, brewing kombucha, or any hobby that requires consistent, low-level heat. It's a versatile tool and a key part of our lineup of VIVOSUN propagation equipment.

Is the thermostat controller difficult to program?+

Not at all. The controller features a simple 3-button interface that is incredibly intuitive. You can set your desired temperature and switch between Fahrenheit and Celsius displays in seconds, with no complex programming required.

How much warmer will this mat make my soil?+

The Vivosun heat mat is designed to raise the temperature of the rooting area by approximately 10-20°F (5-11°C) above the ambient room temperature. This provides the gentle, consistent warmth that seeds and cuttings need to thrive.

Can I place my seed trays directly on the mat?+

Yes, you can place standard seedling trays, pots, or containers directly on the surface of the heat mat. For best results, use a humidity dome to trap warmth and moisture, creating a perfect micro-environment for germination.

How do I clean the heat mat?+

The mat is water-resistant, making it easy to clean. Simply unplug the mat, let it cool down, and wipe the surface with a damp cloth. Avoid using abrasive cleaners or submerging the mat or its electrical connections in water.

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Questions About This Product?

Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)

Call (360) 800-5535

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