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AC Infinity S3 seedling heat mat with corded thermostat and power plug, black with blue leaf pattern.
AC Infinity Suncore S3 seedling heat mat (10" x 20.75") with instruction label and dimensions.
Black AC Infinity heat mat controller with dial, L/M/H settings, and power button.
AC Infinity seedling heat mat with UL, MET, IP-67, temp, and energy efficient certifications.
3D diagram showing layers of a seedling heat mat: multi-layer PVC, infrared film, and graphite base.
AC Infinity seedling heat mat with plants, showing heat distribution.
Black seedling heat mat with blue leaf design and seedling tray with 10 young plants.
AC Infinity S3 seedling heat mat with corded thermostat and power plug, black with blue leaf pattern.
AC Infinity Suncore S3 seedling heat mat (10
Black AC Infinity heat mat controller with dial, L/M/H settings, and power button.
AC Infinity seedling heat mat with UL, MET, IP-67, temp, and energy efficient certifications.
3D diagram showing layers of a seedling heat mat: multi-layer PVC, infrared film, and graphite base.
AC Infinity seedling heat mat with plants, showing heat distribution.
Black seedling heat mat with blue leaf design and seedling tray with 10 young plants.

AC Infinity Suncore S3 Seedling Heat Mat - 10" x 20.75"

Official AC Infinity Dealer Model: AC-SMS3
$21.99 USD
  • 10 by 20.75 inch surface provides consistent heat for a standard 1020 seedling tray
  • Far-infrared heating film provides uniform warmth without the hot spots found in traditional wire mats
  • IP67 waterproof quad-layer PVC construction allows for safe use in high-humidity environments
  • 2-year manufacturer's warranty, excluding non-durable goods or consumables
  • View More Details

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THROUGH THE Cultivator's LENS Hands-On Evaluation

Who This Is For

  • You are starting seeds in a cold room because low ambient temps are stalling your germination rates.
  • You are upgrading your propagation bench because uneven heat on cheap mats is causing spotty growth.

What We Found

  • The far-infrared film is a massive upgrade over old wire-style mats because it eliminates those nasty hot spots.
  • The IP67 rating holds up better than expected against the constant spills and runoff found in propagation trays.

What Users Say

  • Growers who added these mats report their seeds popping days earlier compared to using ambient room heat alone.
  • Users who moved from cheap mats say the thick PVC skin stopped the typical bubbling and peeling after one season.

AC Infinity Suncore S3 Seedling Heat Mat - 10" x 20.75"

Struggling with slow or inconsistent seed germination? Cold temperatures can be the biggest barrier to successful propagation. The AC Infinity Suncore S3 Seedling Heat Mat is the solution, providing gentle, consistent warmth to create the perfect environment for rapid root development and giving your plants the best possible start. The Suncore S3 is a cornerstone of any serious propagation setup, ensuring your seedlings and clones thrive from day one.

Engineered with an innovative far-infrared film, this mat distributes heat evenly across its entire surface, eliminating hot spots that can scorch delicate roots. The simple inline controller allows you to maintain the ideal temperature, while the rugged, IP67 waterproof quad-layer PVC construction ensures durability and safety for years of use. As a key component of the AC Infinity ecosystem, this mat is designed for reliability and performance.

Features

AC Infinity Suncore S3 mat with healthy seedlings
AC Infinity Suncore S3 used for a reptile enclosure
🌡️
Intelligent Heat Control

Features an inline controller to dial in the perfect warmth for your specific seeds or clones.

🔥
Uniform Far-Infrared Heat

Provides consistent, gentle heat across the entire mat surface without creating damaging hot spots.

✅
Durable & Safe

Built with IP67 waterproof quad-layer PVC and meets UL/MET certifications for complete peace of mind.

🦎
Versatile Applications

Ideal for more than just plants; use it for home brewing, fermentation, or reptile enclosures.

Specifications

Specification Value
Total Dimensions 10 x 20.75 in. (25.4 x 52.7 cm)
Outer Material Multilayer PVC
Heating Material Far Infrared Film
Temperature Range 80-87°F
Waterproof Rating IP-67
Operating Voltage 100-125V AC
Max Power Draw 20 W
Power Source Wall Outlet

Support & Manuals

Warranty

This AC Infinity product includes a two-year manufacturer's warranty. Please note this does not cover non-durable goods or consumables.

FAQs

What is the ideal use for the Suncore S3 heat mat?+

The Suncore S3 is designed to accelerate seed germination and promote healthy root growth in seedlings and clones by providing consistent, controlled warmth to the root zone.

What size tray does this mat fit?+

Its 10" x 20.75" dimensions are designed to perfectly fit a standard 1020 seedling tray, making it an ideal companion for most humidity domes and germination kits.

Is this heat mat safe to use indoors?+

Absolutely. The mat is both UL and MET certified for electrical safety and features an IP67 waterproof rating, making it safe and durable for use in indoor growing environments.

How durable is the mat?+

The Suncore S3 is constructed with a rugged, quad-layer PVC material that is flexible yet highly resistant to fraying, tearing, and water damage, ensuring a long operational lifespan.

Can I use this with other AC Infinity controllers?+

While the Suncore S3 includes its own effective inline temperature controller for standalone use, it is part of the extensive AC Infinity ecosystem. For more advanced, centralized environmental control, you might consider a unit like the AC Infinity Smart Controller 69 Pro.

What else can I use this mat for besides plants?+

Yes, its gentle and consistent heat makes it suitable for various hobbies, including home-brewing kombucha or beer, fermenting yogurt or sourdough, and providing warmth for reptile terrariums.

Happy To Help

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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