Mysa For Central HVAC

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

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.

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, 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 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

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.

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.

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.

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.

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.

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.

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.

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.

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

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.