Heated Bathroom Floors and Your Energy Bill

Published by Chris Hunt on

When performing in-home audits for our clients, I often find that a number of our clients have bathrooms with heated floors.  These are floors that have electric mats wired underneath the surface and the goal of the setup is to provide a warm floor whenever one steps in–day or night.  The homeowner usually sets up a schedule using the temperature controller on the wall so that the floor is warm through the evening, night and early morning, and then resets to the “off” temperature during the day. 

Hidden Costs of Heated Floors to Your Electric Bill

The catch is that these systems often override the schedule the homeowner has set. Why? Because the system does not have to “jump” 10-20 degrees (after being off for 10 or so hours) to get to the desired temperature set-point.  I have seen these set-points range from 73 to 80 degrees in some bathrooms depending on the homeowner’s preference.

What this means is that the homeowner believes the system is only running during the hours he or she has set.

In reality, these systems are using energy all through the day and night. 

Depending on the electricity rates and tiers that homeowner is participating in, those floors can cost $30/month or more.  Most people are astonished to find the heated floor costing them $360+/year, every year.

Solution to Lowering Your Electric Bill

The simplest solution to lower your electric bill is a pair of slippers left by the bathroom door.  A pair of $18 slippers at any big box store will save you hundreds of dollars for years to come.  Last, if you decide not to use the heated floor at all, make sure you have flipped the heated floor circuit breaker to off as well to guarantee the floor will not come back on despite the setting on the wall controller. Many of the homes I help try out slippers and forget about the heated floors in their bathroom.


Chris Hunt

Chris Hunt

Chris is the founder of PowerDown (now known as ScaleBack.us) and an energy coach at https://www.hea.com. Chris is an expert at helping homeowners and business owners in Northern California reduce their electrical consumption and utility bills. In his practice, Chris concentrated on plug load, or the inadvertent use of power by always-on devices, plus the discretionary behavior and use of power by the home or building’s occupants. Chris is a regular lecturer in energy reduction classes and consults to local energy groups, utilities, solar companies and building performance firms. Prior to PowerDown, Chris held marketing and product management positions at Oracle, Adobe Systems and finished his corporate career as a Managing Director at Silicon Valley Bank.