40 sq ft Electric Radiant Floor Heating Mat Kit — 120V with Programmable Thermostat & Floor Sensor
Part#: HTMATKIT-120-40
In Stock
Price: $255.00
Shipping: Free
What's Included:
  • (1) HTMAT-120-40 Electric Floor Heating Mat
  • (1) TH115-AF-120S Thermostat - 120V, 7-day programmable
  • (1) AC112-01 Floor Sensor - 15ft leads
  • (1) Installation Manual

Product Specifications:
  • Voltage: 120V
  • Amp Load: 4A
  • Peak Power: 480 Watts
  • Mat Width: 20"
  • Mat Length: 24.4 ft
  • Coverage Area: 40 sq. ft

Turn Cold Tile Floors into Warm, Comfortable Surfaces

Step onto a warm bathroom floor every morning. The HeatTech 40 sq ft Electric Radiant Floor Heating Mat Kit delivers quiet, even, energy-efficient warmth from the ground up — with no bulky equipment, no air ducts, and no noise. Designed for tile and stone floors in bathrooms, kitchens, standing showers, mudrooms, and entryways, this complete kit includes everything needed for a professional-quality installation.

Thin Profile. Easy Installation. No Raised Floors.

At just 1/8" thick, the heating cable installs directly beneath tile without significantly raising the finished floor height — a common concern with retrofit projects. The mat's self-adhesive backing grips any clean, smooth subfloor surface firmly without staples, letting you reposition as needed while you work. Cable is pre-spaced at 3" intervals on a fiberglass mesh, so there's no measuring, no guesswork, and no risk of uneven heat distribution.

To fit irregular room shapes, simply cut the red fiberglass mesh — never cut the blue heating cable — and fold or rotate the mat around obstacles like toilets, vanities, and shower bases. A single 10 ft armored cold lead connects directly up the wall to the thermostat box, minimizing additional wiring.

Honeywell/Aube Thermostat — Industry-Standard Precision

The included TH115-AF-120S is one of the most trusted floor-sensing thermostats in the industry. Unlike standard air-sensing thermostats that measure room temperature and lag behind floor conditions, this unit reads the floor temperature directly through the included sensor — delivering faster warm-up times and more accurate, consistent comfort.

Program up to 7 days of custom heating schedules to match your daily routine. Running the system only when needed typically reduces energy consumption by 10–30% compared to a non-programmable setup. The thermostat is rated for 120V systems and supports up to 150 sq ft of combined mat coverage on a single unit, making future expansion straightforward.

Quiet, Clean, Allergen-Friendly Heat

Radiant floor heat works differently from forced-air systems. Warmth radiates upward from the floor surface, heating objects and people in the room directly rather than pushing hot air through ducts. The result is a room that feels uniformly warm from floor to ceiling — with no fan noise, no circulating dust, and no dry air. Ideal for households with allergies, young children, or anyone who values a cleaner indoor environment.

Where It Works

Rooms:

  • Bathrooms
  • Kitchens
  • Mudrooms
  • Laundry Rooms
  • Saunas
  • Entryways
  • Sunrooms

Flooring:

  • Ceramic Tile
  • Porcelain Tile
  • Natural Stone
  • Granite
  • Marble
  • Slate

Expandable Coverage

Multiple 120V HeatTech mats can be wired to a single thermostat to cover up to 150 sq ft — making it easy to heat a large bathroom or combine adjacent spaces without adding a second controller.

Part #: HTMATKIT-120-40
Free Shipping on All Orders

Write a Review
Helpful? Yes {{ (2*reviews[i].feedback_helpful) - reviews[i].feedback_count }} No
Verified Purchase
{{ reviews[i].content.title }}
Reply from HeatTech:
By {{ reviews[i].content.name }} (from {{ reviews[i].content.location }}) on {{ reviews[i].updated_at | formatDate }}
Ask a Question
{{ f.question }}
Helpful? Yes {{ (2*f.feedback_helpful) - f.feedback_count }} No
By HeatTech Customer Service on {{ f.answered | formatDate }}

Recently viewed products

Top