Products

Yes. Control everything from the one app. Manage baseboard heating, ductless mini-splits, central HVAC, and electric in-floor heating in one place.Set unique schedules for each thermostat, and in the future group them all together for seamless control.

Yes, as long as you stay within the power limits. You can wire multiple heaters in parallel to one Mysa thermostat (e.g., two baseboards on opposite walls of the same living room).
Check Your Wattage: The total power of all heaters combined must not exceed 3,800 Watts (at 240V) or 1,900 Watts (at 120V).Check Your Space: The electrical box (gang box) must be large enough to accommodate the extra wires and wire nuts needed to join the heaters together. If the box is too crowded ("box fill"), it can be dangerous. Heaters are often daisy-chained to reduce crowding in the thermostat box.

Yes. Add unlimited Mysa thermostats to one account. Control each individually or group them into zones (coming soon for Mysa Central). Set different schedules for different areas. View energy reports per thermostat or combined. Share access with family members so everyone can adjust climate through their own devices.

Yes. The Mysa Trim Kit (sold separately) includes a mounting plate designed for standard electrical junction boxes.

Yes. Installation requires basic comfort with electrical wiring at your furnace or boiler. Our online guide creates custom instructions for your exact setup with 11 different wiring diagrams. If you're uncomfortable working with HVAC wiring, hire a qualified technician—typically $75–150.

Yes, you can control your preferred setpoint temperature from the thermostat’s faceplate. Adjusting the temperature manually overrides your Schedule until the next set point change and doesn’t interfere with app settings.

Only with Mysa Smart Thermostat.  Does not work with other Mysa products (Baseboard, In-Floor) or other smart thermostat brands.

Yes. The free Mysa app gives you complete temperature control from your phone. Full control means adjusting your thermostat from bed, work, or vacation.

Yes. Mounting to drywall? Use only the Trim Plate. The adapter is there if you need it.

No. While Mysa for Central HVAC features a built-in humidity sensor that allows you to monitor your home's humidity levels directly from the app or device display, it does not have the accessory terminals (ACC/HUM) required to actively control external equipment like humidifiers, dehumidifiers, or ventilators. However, we are working on developing a 7-relay version of the central HVAC thermostat that would support accessory control. Stay tuned for updates.

It depends on the product. Mysa for Baseboard is generally compatible with GFCI breakers. However, Mysa for In-Floor includes its own built-in GFCI protection and should not be installed on a circuit that is already protected by a GFCI breaker to avoid nuisance tripping.

It depends on the product. Mysa for Baseboard is generally compatible with GFCI breakers. However, Mysa for In-Floor includes its own built-in GFCI protection and should not be installed on a circuit that is already protected by a GFCI breaker to avoid nuisance tripping.

Yes. Share access with family members, roommates, or tenants. Each person downloads the app and you grant them permission from your account. Everyone can adjust temperature, view schedules, and check energy reports. You keep admin control over who has access.

Not yet. This feature arrives in the first half of 2026 with the Mysa Climate Sensor. It tracks temperature and humidity wherever you place it, balancing hot and cold spots automatically.

Yes! Ductless mini split heat pumps, window AC units, and portable AC units are all electric systems controlled by a remote using IR (infrared) signals instead of a thermostat wired into a wall. Mysa uses IR signals to pair with your unit and replace your remote, functioning as a thermostat that helps regulate heating and cooling. The convenience of IR smart thermostat control means no more searching for the remote or worrying about whether you turned off the mini‑split or AC; simply change or monitor your home’s heating and cooling settings from the Mysa smartphone app.

Yes. Baseboard heaters use high-voltage (line voltage 120V-240V) power, so they need a thermostat made specifically to handle that electrical load directly. Regular low-voltage smart thermostats (like those used for furnaces or central HVAC) aren’t compatible and can be dangerous if connected to these systems.

That’s exactly why Mysa’s electric baseboard heater thermostat was created. It’s purpose-built for high-voltage electric baseboard, fan-forced in-wall, and in-ceiling heating systems. You can finally enjoy smart-home control, scheduling, and energy savings with the electric heating setup you already have!

They can, especially if they’re left running continuously. Electric baseboard heaters are 100% efficient at converting electricity into heat, but they can still be expensive to run if not managed properly. Factors like room insulation, window quality, and using a smart thermostat to minimize run time all influence monthly energy consumption.

Yes, a C-wire (Common wire) is required to provide continuous power to the low-voltage Mysa for Central HVAC. If your system does not have a C-wire, a C-wire adapter is supported to ensure compatibility.

Not always. It depends on your comfort level and local regulations. Many customers can install the smart thermostat for electric baseboard heaters in about 15 minutes using step-by-step guides. However high-voltage wiring requires strict safety guidelines. Always turn off the circuit breaker before starting. If you’re not confident, the wiring looks different than expected, or local regulations require it, you should hire a licensed electrician.

No. It's optional—for walls where your old thermostat left visible marks or a larger opening than the Mysa covers.

Over 55% of compatibility checker submissions need the adapter. Homes built before 2000 and hydronic heating systems are most common.

Most mini‑split systems don’t have a traditional thermostat like central HVAC systems do. They’re controlled by a handheld remote that sends infrared (IR) signals directly to the unit. That’s how each indoor head in your home acts as its own “zone.” But it also means each zone needs its own thermostat or remote to control temperature settings. You can replace those remotes entirely with the Mysa mini‑split thermostat. Each one connects to a specific mini‑split head, unlocking simple, wall‑mounted or tabletop control and full app access to manage every zone from one place.

Most smart thermostats aren’t designed for electric baseboard heaters - they only work with low-voltage systems like furnaces or central HVAC. But Mysa for baseboard is different. It’s built specifically for high-voltage electric heating including baseboard, fan-forced in-wall, and radiant ceiling systems.

They can, especially older mechanical thermostats. Internal bimetal strips can degrade over time, leading to temperature swings, while dust buildup or loose wire connections can cause unresponsive controls or safety hazards.

It might be time to upgrade to an electric baseboard heater thermostat if you notice any of these signs, and your search ends here at Mysa. Not only does this solve your problems, but it gives you precise digital temperature control from anywhere!

Yes. Mysa needs a 2.4 GHz WiFi connection to enable remote control, voice commands, smart home integration, and app-based features like energy reports . Without WiFi, the thermostat still regulates temperature using manual controls on the device itself, but you lose all smart functionality. Make sure your WiFi signal reaches the thermostat location before installation

Mysa integrates seamlessly with Amazon Alexa, Google Assistant, and Apple HomeKit. After connecting, you can use simple voice commands like “Hey Alexa, set the bedroom to 72 degrees” or “Hey Google, turn off the living room AC,” making managing home comfort easy when your hands are full or you don’t want to reach for the phone.

No. It's a thermostat, not a listening device. We believe those experiences are best left to a smart home speaker that's likely updated more often than your thermostat.

Does Mysa heat the room or just the floor?
It controls both. Choose your preferred mode in the app:

• Floor Mode: Targets specific floor surface temperature.
• Ambient Mode: Monitors air temperature to heat the room. Floor temperature limits remain active to prevent damage.

Note: You must install the floor sensor. Mysa will not operate without it.

No. We sell thermostats. That's how we make money. Full stop.

Mysa for Baseboard can replace most single-pole and double-pole thermostats, but it functions internally as a single-pole device. It requires a connection to both power wires (L1 and L2/Neutral) but only switches the power to the heater on one of those wires (the load wire).

Not yet. Matter certification for future-proof smart home compatibility is expected to arrive in early 2026. We deliver new features, improvements, and fixes automatically. Once updated, Mysa connects directly to Apple HomeKit, Amazon Alexa, and Google Home for instant voice control and seamless automation

The Mysa app runs on iOS and Android devices. Download from the Apple App Store for iPhone and iPad or Google Play for Android phones and tablets. The app looks and works identically on both platforms.

No. Mysa Smart Thermostat only.

No subscriptions here - ever - be it for our mini-split thermostat, our baseboard heater thermostat, or our in-floor heating thermostat. All of Mysa’s smart features, including app control, scheduling, energy insights, and smart-home integrations, are included with your purchase. You’ll get free app updates, unlimited access to your data, and full control of your thermostat without any monthly or hidden fees.

Yes. Works with hot water boilers, hydronic in-floor heating, and zone valve configurations. For zoned systems, install the adapter at each zone valve—not at the boiler aquastat.

Yes. Mysa for Central HVAC is compatible with most 24V electric boiler and hydronic radiator systems. Since these systems often use a simple 2-wire setup, you will likely need to add our C-Wire Adapter. Verify compatibility using our online checker first.

No. The C-Wire Power Adapter works exclusively with Mysa for Central HVAC. Baseboard and in-floor thermostats use line voltage and don't require a C-wire.

Takes 15-20 minutes for most people. Connect five color-coded wires following the in-app guide, mount the base plate, attach the faceplate, power on and complete setup. Video instructions built into the Mysa app show every step. C-wire adapter comes pre-configured if you need it. Free installation support available by phone. Professional installation costs $75-150 if you prefer hiring an electrician or HVAC tech.

 Plug the Mysa for AC & Mini-Splits into a power outlet and place it on a tabletop or mount it on a wall where it has a clear, direct line of sight to your AC unit. Then, use the Mysa app and your AC's original remote to complete the infrared (IR) pairing process.

For safety, first turn off power at the circuit breaker. Then, follow the step-by-step wiring instructions in the Mysa app. Once installed, restore power at the breaker and complete the pairing process in the app.

They can fail. Here are some signs your baseboard heater thermostat might be failing:

• Your heater doesn’t respond when you adjust the temperature on the thermostat.
• Your room feels too hot or too cold, indicating calibration drift.
• You hear clicking, but your heater doesn’t heat up; this could indicate a burnt-out heater element.
• The faceplate of your old mechanical thermostat feels too hot to the touch. (Smart thermostats like Mysa may feel slightly warm during normal operation — this is normal.)

It might be time to upgrade to our smart thermostat for electric baseboard heaters. You’ll love being able to control the heat in every room from anywhere, and our precise calibration ensures reliable, comfortable performance.

Programmable thermostats rely on manual input that often fails. Research shows 73% of owners never use the scheduling features because they are too complicated. Mysa removes this human error. Geofencing detects when you leave to lower the heat automatically, while smart schedules save 3-5 hours of runtime daily while you sleep. You save 15-26% on heating costs without touching the dial.

Mysa Central connects to your home's Wi-Fi network, allowing you to manage your HVAC system remotely. You can set schedules, adjust temperatures, and monitor energy usage through the Mysa app. This ensures your home is always at the perfect temperature when you need it.

Mysa helps reduce your electricity bill by optimizing when and how your heating or cooling runs. Using features like custom scheduling, geofencing and Eco‑Mode, Mysa ensures your mini-split only runs when you need it and at the most efficient settings. Detailed energy insights in the app show how much energy each zone uses so you can make informed adjustments to save more. Many users see savings of up to 20% without sacrificing comfort.

Mini-splits rely on IR communication to adjust heating or cooling settings — the same technology your remote uses. Mysa’s Smart Thermostat for Mini-Split Heat Pumps & AC works by learning those IR signals and taking over as your new smart controller. Once Mysa takes over, you can control temperature, mode, fan speed, and scheduling from the Mysa app or your favorite smart-home assistant. No need for wiring changes or system modifications. It simply replaces your remote and gives you smarter, easier control.

Mysa simplifies this connection by replacing your existing wall thermostat. While installation involving high-voltage wiring should always be done withcare(and with the breaker off), many homeowners complete the up

10 years or more, depending on use and environmental conditions. But older thermostats lose accuracy over time, leading to temperature swings/inefficiency. Even if yours still "works," it could be worth upgrading to our electric floor heating thermostat.

Each Mysa is designed to work on its own. You can start with just one thermostat and add more over time. To maximize energy savings, start with three thermostats in the rooms you use most.

Customers typically save 10-26% on heating & cooling costs. Heating and cooling is the single largest energy expense in North American homes. Natural Resources Canada identifies heating as 61% of total energy use, while the U.S. Department of Energy confirms a simple daily temperature setback cuts annual bills by 10%. Whether you are cutting down a $2,000 annual energy bill or tackling a harsh Canadian winter, Mysa ensures you never pay to heat an empty house.

With a traditional dial thermostat, you must manually turn the knob until the room feels comfortable, which is often inaccurate and leads to overheating. Mysa’s smart thermostat allows you to fine‑tune the temperature digitally from the wall or your phone, set your ideal comfort level, and create weekly schedules or make quick adjustments via the app whether at home, work, or away.

✓ Works with gas furnaces, electric heat pumps, central air conditioning, and multi-stage systems

✓ Powered by C-wire (common wire)

✓ Multi-zone ready: group thermostats for synced control across your home

Mysa requires more than two wires to function. Unlike old mechanical thermostats that work like a simple light switch, Mysa is a smart device that needs continuous power to stay connected.

The Requirement
You typically need four wires in your electrical box: Supply (from the breaker) and Load (going to the heater).

The Problem
If you only have two wires, it is a "switch loop" and Mysa will not work without rewiring. We recommend you hire a licensed electrician or contact support with a photo of your current thermostat wiring

Yes. Mysa for Baseboard requires a connection to both live wires in the electrical box (L1 and L2/Neutral) to power themselves; they cannot operate on a single conductor (two-wire) setups.

However, always ensure you count the wires in the junction box, not the wires coming from the existing thermostat. Many homes have an extra wire tucked into the wall. Mysa data shows less than 10% of installations only have two wires in the junction box

No. It is a common misconception that it is cheaper to leave baseboard heaters running constantly. It is more cost‑effective to heat only when and where you need it. Baseboard heaters allow zonal heating, so leaving them running in empty rooms wastes energy. Mysa’s smart thermostat can help you save up to 20% on heating costs by enabling zoned control, smart schedules, and geolocation features.

Absolutely! The Mysa thermostat is designed to optimize energy usage, helping you save on heating costs. With features like scheduling and remote control, you can manage your energy consumption effectively. Enjoy a cozy home while being environmentally friendly.

The specific Mysa model you need depends on your heating type. Mysa for In-Floor works with high-voltage electric heating. Mysa for Central HVAC works with low-voltage (24V) thermostat and can control hydronic (water-based) floor heating.

Yes. Mysa works with oil furnaces, but it requires a continuous power supply (C-wire). To install Mysa on a 2-wire system, you have two options:

1. Check for hidden wires
Many homes have a C-wire already installed but unused. Check behind your current thermostat for an extra wire tucked into the wall.

2. Install the Mysa C-Wire Power Extender kit
Mysa designed the thermostat and C-Wire extender kit in tandem to be the best thermostat for two-wire heat-only systems.

Yes. Select your floor type in the app during setup to activate Smart Limit Protection. Mysa automatically caps floor temperature at 30°C (86°F) (or your manufacturer's limit) to prevent warping or fading.

Download the app free from the Apple App Store or Google Play. Every feature inside stays free forever. Zero subscription fees, hidden charges, or premium tiers. Buy the thermostat once and use the full app indefinitely.

A specialized Mysa Trim Kit is coming soon (expected December–January). Designed to snap over your wall , it covers gaps and old screw holes left by larger legacy thermostats for a seamless look. No spackling or repainting required.

Yes, and the differences matter. Some thermostats only measure air temperature, risking damage to luxury flooring like engineered wood or vinyl. Mysa uses a floor sensor to enforce a maximum temperature limit, protecting your floor materials from overheating while ensuring consistent warmth.

Yes. However, the adapter must be used with a separately purchased 24V power supply when being used with millivolt systems. 

Mobile App

Available on Apple App Store and Google Play

Integrations

[Coming Soon] Matter certified

Support for all major smart home platforms like Apple Homekit, Amazon Alexa, Google Home.

Security

IEEE 802.11 security (WFA, WPA/WPA2, WAPI)
Secure boot
TLS v1.2 w/2048 bit cert. keys
SHA-256 on crypto credentials
Level 1 CSA Cybersecurity Verification Program

Mysa for Central HVAC offers several benefits, including energy efficiency, remote access, and customizable scheduling. It helps reduce energy consumption, leading to lower utility bills while enhancing your comfort. Additionally, its sleek design complements any home decor.

White only.

Your thermostats continue regulating temperature based on the last settings. Manual controls on each Mysa still work, so you can walk up and adjust temperature by hand. When WiFi returns, the device reconnects automatically and schedule changes and remote control resumes.

Manual touchscreen controls always work for adjusting temperature and mode. System keeps heating or cooling your home normally. Smart features resume automatically when WiFi connection returns. Local settings stored in the thermostat survive power outages and network problems.

If you have any questions or need assistance, our customer support team is here to help. You can reach us via email or phone, and we strive to respond promptly. Additionally, our website offers a wealth of resources and troubleshooting guides.

Our customer support team is here to help you. You can reach out via our contact page for assistance. We’re committed to ensuring you have the best experience with Mysa.

Use the included Junction Box Adapter Plate for a secure mount. Fits single and double gang boxes. Add the Trim Plate on top for a finished look.

Use the Rext terminal with a standard 24 VAC plug-in transformer (sold separately at hardware stores, ~$15–20). This "T&T configuration" works for older boilers, standalone zone valves, and dry contact relay systems. One transformer can power up to three Mysa + adapter setups.

Smart thermostats built for every system in your home. We help you save energy and maintain a comfortable home. With its user-friendly app, you can control your heating or cooling systems from anywhere.

Mysa for Central HVAC is a smart thermostat designed specifically for central heating and cooling systems It allows you to control your home's heating and cooling from anywhere using your smartphone. With energy-saving features, Mysa Central helps you maintain comfort while reducing your energy bills.

Mysa offers a one-year warranty on all thermostats, covering defects in materials and workmanship. Additionally, we provide software support to ensure your device stays updated. For more details, please check our warranty policy.

Each Mysa Thermostat uses about 0.5 MB of data per day. Mysa works with most household routers but requires a 2.4 GHz network connection; make sure your router can operate on 2.4 GHz (not just a merged network). No special routers are needed.

Mysa costs $70-120 less than premium competitors while including the same core features. We are a privacy-focused Canadian company that never sells your data to Google or Amazon. You get energy monitoring as detailed as premium brands and Matter certification for future-proof smart home compatibility.

Buy the thermostat once and use every feature forever, because software updates remain free for the life of the device and we never lock features behind subscription paywalls.

There is a switch located on the back of the main display unit. If you have two separate R-wires (one labeled RH and one labeled RC), you must slide this switch to the opposite side of its default position. For single-transformer configurations (only one R-wire), ensure the switch remains in the default position.

Up to 17 cm x 17 cm (6.7" x 6.7")—large enough for most standard thermostat footprints.

It’s entirely up to you and your comfort level. Most homeowners using Mysa keep baseboard heaters around 68–72°F (20–22°C) when they’re home, and lower the temperature to 60–65°F (16–18°C) while sleeping or away. Mysa’s electric baseboard thermostat lets you create custom heating schedules and uses geolocation to automatically adjust the heat based on your lifestyle, maximizing comfort and energy savings.

Small flathead screwdriver and Phillips screwdriver.

You need a medium Phillips screwdriver.

We also recommend having these on hand:

• Small Phillips screwdriver
• Drill with 3/32" (hardwood) or 5/64" (softwood) bit
• Wire strippers
• Pliers

The adapter, wire connector for external transformer setups, adhesive mounting pad, wire label stickers, and installation guide.

Yes. Select Tile or Stone mode to unlock higher thermal limits. Mysa allows your floor system to reach 40°C (104°F), ensuring tiles feel warm even on cold mornings.

Mysa’s Mini‑Split Thermostat replicates the functions of your existing remote, including any humidity‑control settings your unit supports. While the thermostat itself doesn’t measure humidity, it can transmit humidity-related commands from the remote to your mini‑split if available. You can adjust humidity through the app when supported by your AC unit.

Works with gas furnaces, electric heat pumps, central air conditioning, and multi-stage systems. Compatible with 95% of homes using standard 24V thermostats. Handles up to 3 stages of heating and 2 stages of cooling. Designed to work with the Mysa C-wire Power adapter (sold separately) for homes lacking common wire. Verify compatibility using our online checker or contact support with a photo of your current thermostat wiring.

Mysa is designed to work with most existing sensors and floor installations and can be calibrated to work with your existing floor sensor, as long as the total wattage of your floor system is less than 3800 watts. Crucially, Mysa includes a built-in Class A GFCI, so it acts as a safety upgrade even if your old thermostat did not have on

Mysa for AC and Mini-Splits replaces most LCD remotes for ductless mini-split heat pumps and window/portable AC units. It works with many popular brands like Mitsubishi, Fujitsu, LG, and Frigidaire, as well as General Electric for portable ACs and other brands such as DeLonghi, Frigidaire, and Danby. If your brand isn’t listed, our supported brands list is always growing.

No. Designed exclusively for Mysa Smart Thermostat.