---
product_id: 650413270
title: "AC Infinity SUNCORE H3, Seedling Mat 10” x 20.75” with Digital Thermostat Controller for Exact Temperature Levels, Waterproof Heating Pad for Indoor Gardening, Hydroponics, Germination, Cloning"
brand: "ac infinity"
price: "$306815"
currency: COP
in_stock: true
reviews_count: 13
category: "Ac Infinity"
url: https://www.desertcart.co/products/650413270-ac-infinity-suncore-h3-seedling-mat-10-x-20-75
store_origin: CO
region: Colombia
---

# Waterproof & durable IP67 PVC Fast, even far-infrared heating Precise digital thermostat AC Infinity SUNCORE H3, Seedling Mat 10” x 20.75” with Digital Thermostat Controller for Exact Temperature Levels, Waterproof Heating Pad for Indoor Gardening, Hydroponics, Germination, Cloning

**Brand:** ac infinity
**Price:** $306815
**Availability:** ✅ In Stock

## Summary

> 🌱 Heat your seeds, not your patience — precision warmth for next-level growth!

## Quick Answers

- **What is this?** AC Infinity SUNCORE H3, Seedling Mat 10” x 20.75” with Digital Thermostat Controller for Exact Temperature Levels, Waterproof Heating Pad for Indoor Gardening, Hydroponics, Germination, Cloning by ac infinity
- **How much does it cost?** $306815 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/650413270-ac-infinity-suncore-h3-seedling-mat-10-x-20-75)

## 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

- • **Rapid & Uniform Heat:** Innovative far-infrared film ensures faster heat-up and consistent warmth edge-to-edge—no cold spots.
- • **Built to Last & Clean:** Quad-layer IP67 waterproof PVC resists wear, tear, and spills—ideal for busy indoor gardeners.
- • **Compact & Flexible Design:** 10” x 20.75” mat fits any grow space, easily rolled or wiped clean for hassle-free indoor gardening.
- • **Exact Temperature Control:** Digital thermostat lets you dial in the perfect warmth for flawless germination every time.
- • **Optimized Seedling Success:** Eliminates guesswork and scorching risk, boosting your hydroponics, cloning, and germination rates.

## Overview

The AC Infinity SUNCORE H3 Seedling Mat is a 10” x 20.75” waterproof heating pad featuring a digital thermostat for precise temperature control. Utilizing far-infrared technology, it delivers fast, even heat distribution to optimize seed starting, germination, and cloning indoors. Crafted with durable IP67 quad-layer PVC, it’s built to withstand wear and is easy to clean, making it a reliable choice for professional and hobbyist gardeners aiming for consistent, high-yield results.

## Description

desertcart.com : AC Infinity SUNCORE H3, Seedling Mat 10” x 20.75” with Digital Thermostat Controller for Exact Temperature Levels, Waterproof Heating Pad for Indoor Gardening, Hydroponics, Germination, Cloning : Patio, Lawn & Garden

Review: NOT as good as the one with a round knob/dial. I was very disappointed ☹️ - I'm NOT getting paid for this review and not getting compensated in any form or fashion. I love AC Infinity company, their customer service is second to none and they have top quality growing supplies. I was excited when I found out that a digital version of the heating mat is coming out which I thought would be more convenient and I wouldn't have to use a thermometer/hygrometer to put inside the dome to monitor temperature and humidity to have proper germination and/or cloning rooting success rates but when I received it I was quickly disappointed because first of all for those in colder climates will have issues getting temperature to 80° or above 80° because for some reason even when I set the temperature to get to 110° it takes quite a while to climb to 102° but when I check the temperature with a couple of separate thermometers It shows that the temperature is around 74 to 76° and in order to get it to climb up I would have to put something under the heating mat like a piece of plywood or styrofoam and I add one of the desertcart bubble envelopes too avoid losing any of the heat radiating down to the floor and that definitely helps but if someone needs higher temperatures like 84° for instance I don't think they will be able to achieve that with this heating mat. For the most part the temperature that's needed for my plants for germination is 78 to 80° which is the sweet spot and to get there I have to set the temperature to 102° and it fluctuates between 100 and 102°, which actually keeps the temperature at 78 to 80° F with a piece of plywood under the heating mat and a couple desertcart bubble envelopes stacked on top of each other. The one that I would recommend is the same one but with the dial/knob which works flawlessly and I would need to have the temperature either in the middle or between the first quarter and the middle. Just make sure you use a thermometer/hygrometer inside the dome to dial in temperature and humidity. Here's the hygrometer / thermometer set of four that I highly recommend and they have two options either without a probe or with the probe. The ones with the probe you can only measure the temperature with the probe but to measure temperature and humidity you would need to unplug the probe and put the device itself inside the dome but if you never need to check only temperature then get the ones without the probe because it's a little cheaper and you won't have that probe port open that can get dirty and something can get stuck in there. These are a lot more reliable than those really cheap ones, the black rectangular ones. Here's the link 👇 4PCS Mini Digital Hygrometer and Thermometer Reptile Thermometer with Extend Probe (Only Temperature) Indoor Temp and Humidity Meter with Magnet https://a.co/d/aYE6XyD I hope this review helps 😊
Review: Best seedling mat ever! - I am so impressed with this mat. I have several other less expense mats from various brands. This is SO MUCH BETTER! It lays flat, heat goes clear to the edge of the mat. The digital controller is an added bonus. Definitely worth paying more for. As the rest of my other mats wear out I will be replacing them with the AC Infinity ones!

## Features

- 10” x 20.75” heating mat to accelerate and improve the success of seed starting and germination.
- Digital heat controller displays real-time mat temperature, which can be adjusted to exact levels.
- Eliminates the guesswork of determining heat levels to germinate any seed with no risk of scorching.
- Features innovative far-infrared film that warms faster and evenly distributes heat across the mat.
- Crafted with IP-67 quad-layer PVC that is flexible, resistant to wear and tear, and easy to wipe clean.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D94XY74G |
| Best Sellers Rank | #22,928 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #37 in Plant Heating Mats |
| Customer Reviews | 4.5 4.5 out of 5 stars (105) |
| Item Weight | 1.01 pounds |
| Item model number | AC-SMH3 |
| Manufacturer | AC Infinity |
| Product Dimensions | 20.75 x 10 x 0.09 inches |

## Product Details

- **Brand:** AC Infinity
- **Item Weight:** 0.46 Kilograms
- **UPC:** 819137024540
- **Unit Count:** 1.0 Count

## Images

![AC Infinity SUNCORE H3, Seedling Mat 10” x 20.75” with Digital Thermostat Controller for Exact Temperature Levels, Waterproof Heating Pad for Indoor Gardening, Hydroponics, Germination, Cloning - Image 1](https://m.media-amazon.com/images/I/415NXr8tQSL.jpg)
![AC Infinity SUNCORE H3, Seedling Mat 10” x 20.75” with Digital Thermostat Controller for Exact Temperature Levels, Waterproof Heating Pad for Indoor Gardening, Hydroponics, Germination, Cloning - Image 2](https://m.media-amazon.com/images/I/41IaSTqaIEL.jpg)
![AC Infinity SUNCORE H3, Seedling Mat 10” x 20.75” with Digital Thermostat Controller for Exact Temperature Levels, Waterproof Heating Pad for Indoor Gardening, Hydroponics, Germination, Cloning - Image 3](https://m.media-amazon.com/images/I/41InykJ0mHL.jpg)
![AC Infinity SUNCORE H3, Seedling Mat 10” x 20.75” with Digital Thermostat Controller for Exact Temperature Levels, Waterproof Heating Pad for Indoor Gardening, Hydroponics, Germination, Cloning - Image 4](https://m.media-amazon.com/images/I/41d5h6VxHuL.jpg)
![AC Infinity SUNCORE H3, Seedling Mat 10” x 20.75” with Digital Thermostat Controller for Exact Temperature Levels, Waterproof Heating Pad for Indoor Gardening, Hydroponics, Germination, Cloning - Image 5](https://m.media-amazon.com/images/I/41k-bYgEU3L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ NOT as good as the one with a round knob/dial. I was very disappointed ☹️
*by Y***Y on February 8, 2025*

I'm NOT getting paid for this review and not getting compensated in any form or fashion. I love AC Infinity company, their customer service is second to none and they have top quality growing supplies. I was excited when I found out that a digital version of the heating mat is coming out which I thought would be more convenient and I wouldn't have to use a thermometer/hygrometer to put inside the dome to monitor temperature and humidity to have proper germination and/or cloning rooting success rates but when I received it I was quickly disappointed because first of all for those in colder climates will have issues getting temperature to 80° or above 80° because for some reason even when I set the temperature to get to 110° it takes quite a while to climb to 102° but when I check the temperature with a couple of separate thermometers It shows that the temperature is around 74 to 76° and in order to get it to climb up I would have to put something under the heating mat like a piece of plywood or styrofoam and I add one of the Amazon bubble envelopes too avoid losing any of the heat radiating down to the floor and that definitely helps but if someone needs higher temperatures like 84° for instance I don't think they will be able to achieve that with this heating mat. For the most part the temperature that's needed for my plants for germination is 78 to 80° which is the sweet spot and to get there I have to set the temperature to 102° and it fluctuates between 100 and 102°, which actually keeps the temperature at 78 to 80° F with a piece of plywood under the heating mat and a couple Amazon bubble envelopes stacked on top of each other. The one that I would recommend is the same one but with the dial/knob which works flawlessly and I would need to have the temperature either in the middle or between the first quarter and the middle. Just make sure you use a thermometer/hygrometer inside the dome to dial in temperature and humidity. Here's the hygrometer / thermometer set of four that I highly recommend and they have two options either without a probe or with the probe. The ones with the probe you can only measure the temperature with the probe but to measure temperature and humidity you would need to unplug the probe and put the device itself inside the dome but if you never need to check only temperature then get the ones without the probe because it's a little cheaper and you won't have that probe port open that can get dirty and something can get stuck in there. These are a lot more reliable than those really cheap ones, the black rectangular ones. Here's the link 👇 4PCS Mini Digital Hygrometer and Thermometer Reptile Thermometer with Extend Probe (Only Temperature) Indoor Temp and Humidity Meter with Magnet https://a.co/d/aYE6XyD I hope this review helps 😊

### ⭐⭐⭐⭐⭐ Best seedling mat ever!
*by H***N on December 27, 2025*

I am so impressed with this mat. I have several other less expense mats from various brands. This is SO MUCH BETTER! It lays flat, heat goes clear to the edge of the mat. The digital controller is an added bonus. Definitely worth paying more for. As the rest of my other mats wear out I will be replacing them with the AC Infinity ones!

### ⭐⭐⭐⭐⭐ Excellent heating pad, with US plug
*by I***Ó on December 31, 2025*

A very useful tool for indoor gardening and seedling cultivation.

## Frequently Bought Together

- AC Infinity SUNCORE H3, Seedling Mat 10” x 20.75” with Digital Thermostat Controller for Exact Temperature Levels, Waterproof Heating Pad for Indoor Gardening, Hydroponics, Germination, Cloning
- AC Infinity Heavy Duty 3mm Thick Humidity Dome Germination Kit with LED Grow Light Bars, Drip Tray, Seedling Tray, Vented Height Extension Panels for Seed Starting, Cloning, Indoor Gardening
- 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

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-01-27*