nHance Programmable Thermostat

nHance Programmable Thermostat
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  • Program up to 4 setting changes for each day of the week

  • Pre-programmed settings for ultra-fast installs

  • With an included floor sensor, your system can cycle on and off and continuously adjust to save energy

  • Large, backlit display for easy reading in low light areas

  • Easily track your energy usage

nHance Programmable Thermostat Description

Like floor heating itself, the programmable nHance thermostat represents a harmonious blend of style and usability. Its modern design incorporates a large, backlit display that makes it easy to read in low light areas. This dual voltage (120V/240V) control, with built-in self-testing GFCI, comes with pre-programmed settings for ultra-fast installs.

With its intuitive user-interface, you can easily set the nHance up for your exact needs and specifications. If you have a consistent schedule, this programmable thermostat will deliver a maximum level of comfort when you need it most, like during your morning routine, while still keeping your overall energy use to a minimum. Includes floor sensor.

  • Pre-programmed for quick set up
  • 7-day programmable
  • Features "child-lock" function
  • Energy Log for tracking use
  • Works with hardwired WarmlyYours radiant panels
  • 3-year warranty


Warranty / Certifications

Approvals cULus listed
Ingress Protection (IPxx) Rating IP21
Warranty Limited 3-year warranty and lifetime technical support


Circuits Required 1
Connection 4 wires, double pole
Connection Method Hardwired
Ground Fault Protection GFCI, Class A, 5 mA
Maximum Current 15 A
Maximum Power 1800 W @ 120 V, 3120 W @ 208 V, 3600 W @ 240 V
Supply 120 VAC, 208 VAC, 240 VAC (50/60Hz)


Country of Origin (COO) Denmark

Product Dimensions

Depth 2″
Installed Depth 0.75″
Length 4.688″
Width 2.875″


Display Backlit Display
Display Size 3.5″


Floor Sensor Compatibility 10k ohms and 12k ohms
Includes Floor Sensor Yes (1)
Programmable Yes, 7-day


SKU UDG-4999
UPC (GTIN-12) 881308051211

Customer Questions & Answers

nHance Programmable Thermostat has 19 Questions and Answers.

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How do I work with my electrician to install WarmlyYours electric floor heating?

While WarmlyYours electric radiant floor heating systems are typically installed by your floor covering contractor, a licensed electrician is recommended for the final thermostat hook-up. With every quote, we provide an Installation Plan layout, together with an electrical plan that has all the info required for the electrician.

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How can I determine what I need for my floor heating project and how can I find out what my floor heating system will cost?

You can use the Instant Quote Tool, which gives you many options for your floor heating coverage. Use this interactive tool to design your room online and receive an instant quotation with product recommendations, rough-in and installation kits, cost of your control, etc. Planning your floor heating project is made easy when using our Instant Quote Tool.

Send us your floor plan or fax it to (800) 408-1100 and we will send you a quote, product recommendation and a free custom installation plan for your project.

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How do I know if I am installing my electric floor heating system properly?

Please keep in mind that you must check your electric floor heating system with a digital ohmmeter in conjunction with a Circuit Check™. Take an initial reading as soon as you take the product out of the box to verify that it is within -5% / +10% of the values stated on the product’s label. This will give you a basis of comparison for future readings. Take a second reading once you have positioned the system to match your custom installation plan. It is also advisable to take an additional reading in the middle of the tile installation, just to make sure that the Circuit Check™ is doing its job. Then, take a final reading when you are finished with the floor installation and are ready to hook up the thermostat.

The Circuit Check™ is a tool developed by WarmlyYours to give you peace of mind and ensure trouble-free installations. Simply hook up the cold leads to the tool while you position the system to match your custom installation plan.

The Circuit Check™ will continuously monitor the continuity of the circuit during the installation of your system and during the installation of your flooring. The Circuit Check™ beeps immediately when a short in the system is detected, alerting you to a potentially damaged cable in the area you are working, before you lay the tile over the electric floor heating system.
 The WarmlyYours technical support team is available 24/7 to provide assistance if the alarm sounds, or if you would have any questions during your installation.

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Can I use electric floor heating as a primary heat source?

Yes, in most cases, an electric floor heating system can be effective as a primary heat source. However, our TempZone™ and Environ™ systems are most commonly used as a secondary heat source, providing floor-to-ceiling radiant heat to any room in your home where you desire more warmth and comfort.

If you are considering electric floor heating for an addition to your home, such as a sunroom where you have no other source of heat, WarmlyYours offers an innovative online tool which calculates approximate heat loss. This tool can help you to determine if a WarmlyYours’ electric radiant floor heating system will provide your desired comfort temperature throughout the year. You can access the Heat Loss Calculator or you can call us at (800) 875-5285 and a Customer Service Representative will make the calculation for you.

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How can I make my basement warmer?

A floor heating system can work as a supplemental heating source and make the basement warmer. If more heat needs to be added to the room, you can experiment with setting the floor heating thermostat to higher temperatures.

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Customer Reviews

nHance Programmable Thermostat achieved an average rating of 4.8 stars with 89 reviews by our customers.

Have you used this product before? Leave a review

Thermostat replacement

Amanda E., North Bay, ON on 03/03/2024

WarmlyYours came through very quickly. They were able to order the thermostat right away and have it sent out to me to receive within a week. They were very accommodating and understanding. Great customer service!

Welcome addition to our bathroom

Adam B., Durango, CO on 12/20/2023

Very nice system that warms the floor and has features for time-of-day heat settings. Very happy.

The unit works well and was easy to install.

Rick Z., Mission, BC on 11/30/2023

The unit works well and was easy to install.

Great products! Love Warmly Yours floors in my home!

Eric F., Layton, UT on 04/17/2023

Great products! Love WarmlyYours floors in my home!

couldn't ask for better

Electrilight L., Oakville, ON on 04/16/2023

always been 100% confident with floor heating cables and thermostats, adding an extra floor thermocouple is paramount to ensure lifespan. Never had 1 recall or trouble from 10 years of installations. easy to follow installation and programming

floor heating, T-stat, towel warmer. pros/cons (Electrical contractor)

Electrilight L., Oakville, ON on 04/16/2023

always been 100% confident with floor heating cables and thermostats, adding an extra floor thermocouple is paramount to ensure lifespan. Never had 1 recall or trouble from 10 years of installations. only con would be the towel warmer, even though it is high quality and strong, I found the mounting hardware a bit flimsy and unforgiving (not to mention the plastic wall plugs which provide no grip in drywall. Precisely measuring all mounting points, the unit ended up crooked (even though a lazer level was used for mounting positions. Diagonally measuring the mounting points was nearly 3/4" off AND the mounting feet have 0 forgiveness, and will leave marks on the finished paint on the walls. Shame there was not a larger mounting plate. The position of hexhead screws are 3/8 from wall and clumsy to tighten without more markings on finished paint. side note, it gets hot, too hot in my opinion

Good customer service. Only complaint was difficulty programm

Anonymous, Scarborough, ON on 03/02/2023

Good customer service. Only complaint was difficulty programming the unit. The previous one was also problematic to program

Response from WarmlyYours:

I'm very sorry to hear that your control was difficult to program. We do offer a remote programming service via our tech support department. However, it sounds like you figured it out! Julia Billen (Owner)

Great service

Linda M., Wheatley, ON on 12/22/2022

We had a faulty part but with a call to the technical department a new part was arranged. It came and worked perfectly. Thanks for great friendlysuper service.

Great service

Linda M., Wheatley, ON on 12/05/2022

From the first phone call to the final repair we had the support and friendly patient service that was superior. Thanks for that

UDG-4999 nHance thermostat was perfect replacement for my TH115-AF-GA thermostat

Anonymous, Plymouth, MN on 04/12/2022

My floor had stopped heating and with the troubleshooting documentation provided by WarmlyYours, I was able to determine that my original TH115-AF-GA thermostat had gone bad. The UDG-4999 nHance thermostat was a perfect replacement and our floor is comfy warm again.

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