QuietWarmth 120V Retrofit Floor Heating System

(4 reviews) Write a Review
Frequently bought together:


QuietWarmth radiant heat film for under subfloors is the perfect solution to add comfort and warmth to any existing flooring, including nail-down wood floors. Simply place the mats between the subfloor joists and run pre-attached lead wires to an available thermostat. Because it is an electric floor heating system, there are no hot water pipes to worry about, thick electrical cables to bury in cement, and most of all no messy installation. Retrofit radiant heat to your existing floors to comfort and warmth to any room in the house.

  • Can be cut to length with a pair of scissors
  • UnderFloor Warming Mat System installs between existing floor joists; from available crawl space or basement beneath
  • Keep your existing floors you love, simply staple the perfectly sized mats between existing floor joist beneath the flooring
  • Heat will radiate upward to heat existing flooring
  • Thin and flexible film technology provides cozy and gentle heat
  • Simple to install, no messy mortars or glues
  • Efficient heat, only costing pennies per day to operate
  • Maintenance free design, control floor temperature with a floor sensing thermostat
  • It works under any type of flooring, including nail-down hardwood and carpets
  • Comes with 15 ft. factory attached lead wires
  • Hook multiple mats together in parallel for full floor coverage
  • Fits 16 in. on center joist spacing
  • Adjust temperature with QuietWarmth Thermostat (Sold Separately)

QuietWarmth Spec Sheet
Click Here to View

QuietWarmth Installation Instructions
Click Here to View

View AllClose

Additional Information

Flooring Type:
Existing Floors
Flooring Type:
Floor Joist - 16" on center
Mortar Required:
Not Required
View AllClose

4 Reviews

  • 5
    Fairly easy installation

    Posted by Patrick M. on 3rd Mar 2021

    The installation went smoothly. The floors take a little while to heat up since the mats are underneath the subfloor, but once they are warm they stay warm easily.

  • 5
    Keeps warmth easily

    Posted by Todd H. on 28th Jan 2021

    Heating element was fairly easy to install. The floors took a bit longer to heat up since the mats are underneath the sub-floor, but the floors kept their heat as well.

  • 5
    Easy to use!

    Posted by Leone on 11th Nov 2020

    Instructions were very clear, they went in easily, and the heat feels great!

  • 5

    Posted by Wilbert on 2nd Apr 2020

    QuietWarmth is one of those things you did not know you needed until you have it! I did not realize how much better a warm bathroom floor in the morning is. This product is great and I would recommend it!

View AllClose