--- product_id: 413591133 title: "AC Infinity SUNCORE S3, Waterproof Seedling Mat with Heat Controller 10\" x 20.75\", UL & MET Certified Heating Pad, for Indoor Gardening, Hydroponics, Germination, Cloning" brand: "ac infinity" price: "£26.22" currency: GBP in_stock: true reviews_count: 13 category: "Ac Infinity" url: https://www.desertcart.co.uk/products/413591133-ac-infinity-suncore-s3-waterproof-seedling-mat-with-heat-controller store_origin: GB region: United Kingdom --- # Waterproof IP-67 quad-layer PVC Fast far-infrared heating Adjustable heat dial control AC Infinity SUNCORE S3, Waterproof Seedling Mat with Heat Controller 10" x 20.75", UL & MET Certified Heating Pad, for Indoor Gardening, Hydroponics, Germination, Cloning **Brand:** ac infinity **Price:** £26.22 **Availability:** ✅ In Stock ## Summary > 🌱 Heat up your green thumb game with precision and style! ## Quick Answers - **What is this?** AC Infinity SUNCORE S3, Waterproof Seedling Mat with Heat Controller 10" x 20.75", UL & MET Certified Heating Pad, for Indoor Gardening, Hydroponics, Germination, Cloning by ac infinity - **How much does it cost?** £26.22 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/413591133-ac-infinity-suncore-s3-waterproof-seedling-mat-with-heat-controller) ## Best For - ac infinity enthusiasts ## Why This Product - Trusted ac infinity brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Growth Control:** Adjustable dial lets you fine-tune heat without disrupting your plants’ growth cycle. - • **Certified Safety Assurance:** UL & MET certifications guarantee reliable, worry-free operation every season. - • **Compact & Lightweight Design:** Slim 10" x 20.75" mat fits seamlessly into any indoor gardening setup. - • **Built to Last & Easy to Clean:** Durable, waterproof IP-67 quad-layer PVC resists wear and spills—perfect for busy indoor gardeners. - • **Rapid, Even Heat Distribution:** Far-infrared film ensures seedlings get consistent warmth for faster germination. ## Overview The SUNCORE S3 is a UL & MET certified waterproof seedling heating mat featuring fast-acting far-infrared technology and an adjustable heat controller. Its durable IP-67 quad-layer PVC construction ensures longevity and easy maintenance, making it an essential tool for indoor gardening, hydroponics, germination, and cloning. Designed to accelerate seed starting success with even warmth and precise temperature control. ## Description AC Infinity is a technology company that specializes in environmental controls for agricultural and HVAC applications. Our smart controllers and integrated grow equipment are designed to work together to create the perfect climate for your plants. Grow Tent Systems Visit the Store Grow Tent Systems Visit the Store Grow Ventilation & Circulation Visit the Store Grow Ventilation & Circulation LED Grow Lights Visit the Store LED Grow Lights Environmental Controllers Visit the Store Environmental Controllers Review: Great Product! - Really nice quality heat mat. Works exactly as it should. Never had to go higher than the lowest setting. Perfect size for the standard propagation tray and dome. Good value for the quality. Review: Value - Works just like it should! Helps seeds germinate a lot faster! ## Features - A heating mat designed to accelerate and improve the success of seed starting and germination. - Features an innovative far-infrared film that warms up faster, and distributes soft heat more evenly. - Adjustable dial controls heat output over time, without turning the mat on/off which disrupts growth. - Crafted with IP-67 quad-layer PVC that’s flexible, resistant to wear-and-tear, and easy to wipe clean. - Verifiable UL (E518635) & MET (E115128) certifications for electrical safety thru online directories. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09TNGKDPJ | | Additional Features | Far-Infrared Heating, Adjustable Heat Controller | | Best Sellers Rank | #99,633 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #22 in Plant Heating Mats | | Brand | AC Infinity | | Brand Name | AC Infinity | | Color | Black, 10" X 20.75" | | Customer Reviews | 4.6 out of 5 stars 1,429 Reviews | | Item Dimensions | 20.75 x 10 x 0.09 inches | | Item Nype Name | Seedling Mat | | Item dimensions L x W x H | 20.75 x 10 x 0.09 inches | | Manufacturer | AC Infinity | | Manufacturer Part Number | GT-AHWM-LB0L | | Material | Polyvinyl Chloride | | Material Type | Polyvinyl Chloride | | Model Number | GT-AHWM-LB0L | | Number of settings | 3 | | Special Feature | Far-Infrared Heating, Adjustable Heat Controller | | UPC | 819137023468 | | Unit Count | 1 Count | ## Product Details - **Brand:** AC Infinity - **Color:** Black, 10" x 20.75" - **Indoor/Outdoor Usage:** Indoor - **Soil Type:** Sandy Soil - **Style:** 10" x 20.75" - **UPC:** 819137023468 ## Images ![AC Infinity SUNCORE S3, Waterproof Seedling Mat with Heat Controller 10" x 20.75", UL & MET Certified Heating Pad, for Indoor Gardening, Hydroponics, Germination, Cloning - Image 1](https://m.media-amazon.com/images/I/61hGv1kBYKL.jpg) ## Questions & Answers **Q: How much watts and amps does this pull?** A: Watts (power) = Amps X Volts Description says matt requires 105W in power/energy to operate Common current in the US is 120V Just Solve for X W= ? X 120 ---> W/V equals A 105W/120V = .875A **Q: Can you use a thermostat with this?** A: So far out of four AC Infinity Suncore mats [2X 48x20] [2X 20x20] THREE mats overheat my seed trays. I've lost FIVE 72 cell trays all seeded. Puzzled by NO germination, I used a meat thermometer and the readings in three of the trays was 95-100*F and the fourth was 75*F. Either AC Infinity Suncore mats have zero quality control or the overall quality is POOR. Be aware these mats will bake your seeds killing the seed germ. If you have them use a probe thermostat. **Q: What temperature is L M H?** A: Put your seed tray under a grow light, preferably with a dome. Then lay a thermometer underneath the dome on top of the seed tray. Then turn the thermostat to medium; Wait for about 6 hours and see what the temp. is.In my case it was about 85 degrees ; I then turned the thermostat between low and medium and it went to 82 degrees.( I put a piece of insulation between the wood shelf and the seed mat.) My seed tray is in the basement; The air temp. is 67 degrees .So the mat raised the temp in the seed tray about 15 degrees. Now, I hope I have good germinating seeds. **Q: Can this be hvac taped to the back of a terrarium for inside ambient heat?** A: I would not that's not what it's for. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Product! *by A***F on March 28, 2026* Really nice quality heat mat. Works exactly as it should. Never had to go higher than the lowest setting. Perfect size for the standard propagation tray and dome. Good value for the quality. ### ⭐⭐⭐⭐⭐ Value *by B***Y on April 26, 2026* Works just like it should! Helps seeds germinate a lot faster! ### ⭐⭐⭐⭐⭐ Also keeps baby ducks warm. *by M***X on March 17, 2023* Came with a nice-quality booklet on growing weed. Not my interest, but nicely done. AC Infinity has a lot of quality in their workmanship and packaging. This is a seedling mat, there's not a lot to say, but: It has a nice bag for storage, which is a nice touch. It has a high/medium/low knob that is *smoothly* adjustable (not just three positions). It kept my baby ducks from dying of cold, without using a ton of power, so there's that. Note: for keeping critters warm, use a thick layer of insulation/bedding (hay, sawdust, or similar) underneath the mat, but only a thin comfort layer on top of the mat, so the heat gets through. Even a small amount of consistent heating can get very hot if well-insulated on both sides, so monitor temperatures well, and don't put enough bedding on top that it acts as an insulator. Also, always make sure your critters have unheated space available, so they can cool off. ## Frequently Bought Together - AC Infinity SUNCORE S3, Waterproof Seedling Mat with Heat Controller 10" x 20.75", UL & MET Certified Heating Pad, for Indoor Gardening, Hydroponics, Germination, Cloning - AC Infinity Heavy-Duty Humidity Dome with Full Spectrum LED Grow Light Bars, Samsung LM301H EVO Diodes, Drip Tray, 5x8 Cell Seedling Tray, 3mm Thick Dome and Vented Extension Panels, for Seed Starting - AC Infinity CLOUDFORGE T3, Plant Humidifier 4.5L with VPD Humidity Controls, 10-Level Precision Vaporizer, Extendable Targeting Hose and No-Leak Seal for Grow Tents --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/413591133-ac-infinity-suncore-s3-waterproof-seedling-mat-with-heat-controller](https://www.desertcart.co.uk/products/413591133-ac-infinity-suncore-s3-waterproof-seedling-mat-with-heat-controller) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-12*