- 1 x VIVOSUN 20″ x 20.75″ Seedling Heat Mat
- 1 x VIVOSUN Digital Thermostat Controller
VIVOSUN 20″ x 20.75″ Digital Thermostat Seedling Heat Mat
- Boosts root zone temperature 10 to 20 degrees Fahrenheit above ambient air
- Alloy Nikrothal heating wire and PET film ensure uniform warmth without dangerous hot spots
- Runs on 45 watts and fits two standard 1020 trays for efficient bench management
- 1-year after-sale service
- View More Details
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Commercial & Bulk Purchasing
We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.
Who This Is For
- You are upgrading to a thermostat-controlled mat because inconsistent soil temps are stalling your seedling growth.
- You are sizing up to a 20-inch mat because you need to heat two 1020 trays without using multiple outlets.
What We Found
- The 20-inch width is just right for fitting two standard trays side-by-side without wasting bench space
- The external probe is the real winner here since it lets you monitor the root zone instead of the mat surface
What Users Say
- The digital display ended the cycle of losing young plants for buyers who used to guess at their soil temps
- A 20-degree heat boost saved the early season for growers working in cold spaces like unheated garages
VIVOSUN 20″ x 20.75″ Digital Thermostat Seedling Heat Mat
Struggling with slow germination or inconsistent seedling growth, especially in cooler temperatures? The VIVOSUN Seedling Heat Mat with Digital Thermostat is the professional solution for providing consistent, controlled bottom heat. This system accelerates germination and promotes robust root development, giving your plants the strong start they need.
Designed for dedicated home gardeners and commercial growers, this combo provides precise control over your propagation environment. The 20″ x 20.75″ heat mat gently warms the root zone to 10-20°F above the ambient air temperature, creating the perfect conditions for seeds and cuttings to thrive. Running on an energy-efficient 45 watts, it's large enough to cover two standard 1020 trays without driving up your electricity bill.
Built for reliability, the mat features durable Alloy Nikrothal heating wire and reinforced PET film insulation for uniform heat distribution, preventing hot spots that can harm delicate roots. Its water-resistant construction ensures safe operation in humid environments and makes cleanup effortless. Backed by MET safety standards, this combo is a dependable tool from the trusted VIVOSUN lineup, ensuring successful results season after season.
What's Included
Features



Precise Temperature Control
Dial in the exact temperature for consistent germination and healthy root growth.
Uniform Heating
Alloy Nikrothal wire ensures even warmth across the mat, eliminating dangerous hot spots.
Durable & Water-Resistant
Built with a reinforced PET film layer that is safe for humid environments and easy to clean.
Energy Efficient
Operates on just 45 watts, providing consistent heat without high energy costs.
Specifications
| Specification | Value |
|---|---|
| Size | 20″W x 20.75″L |
| Voltage | 120V - AC |
| Wattage | 45 Watts |
| Temperature Range | 0-40°C (32-104°F) |
| Insulation Resistance | ≥100MΩ500Vdc |
| Service Life | ≥30000H |
Support & Manuals
Warranty
This product is covered by a 1-year after-sale service, including a free return within 30 days of delivery. VIVOSUN's professional support team is available to ensure your investment is protected.
FAQs
Most seeds germinate best in a temperature range of 70-85°F (21-29°C). The digital thermostat allows you to set and maintain the perfect temperature for your specific plant varieties, ensuring optimal success. For detailed starting advice, check out our beginner's guide to growing indoors.
Yes, you can place standard 1020 seed trays or other containers directly on the heat mat. For best results, we recommend using the heat mat in conjunction with humidity domes to create a complete, warm, and moist microenvironment for your seedlings.
Absolutely. The VIVOSUN heat mat is MET certified and features a water-resistant design, making it perfectly safe for use inside all types of grow tents and other humid propagation areas.
This 20" x 20.75" mat is ideal for up to two standard 1020 trays. If you are propagating a larger number of plants, you may want to consider a larger option like the VIVOSUN 48" x 20.75" Heat Mat Combo to maintain consistency across your entire setup.
Yes, the controlled, gentle heat is also perfect for propagating cuttings, brewing kombucha or yogurt, fermenting foods, and maintaining warm temperatures for reptile terrariums.
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.)
Why Trimleaf
Equipping home growers, craft producers, and commercial operations across North America since 2016.