If you’re shopping for a thermostat with aux heat, you want a dependable model that works with heat pump systems and supports emergency or auxiliary heating. This guide highlights five compatible options and clarifies which homes they suit best. The top picks cover common setups—from 2H/1C heat pump configurations to non-programmable models for simple installations. Whether you’re upgrading for better energy use or easier control, you’ll find practical, comparison-friendly details here.
| Product | Best For | Key Benefit |
|---|---|---|
| Aowel 2 Heat/ 1 Cool Non-Programmable Thermostat | Basic heat pump setups | Simple, reliable control with room temp/humidity monitor |
| Heagstat H721 Non-Programmable | Manual operation fans | Clear display; emergency heat switch |
| Riseem Non-Programmable Thermostat | Conventional & heat pump combos | Easy install, backlit display |
| meross Matter Smart Thermostat | Smart homes | Matter integration; remote control |
| Garystat Non-Programmable Heat Pump Thermostat | 2H/1C heat pump users | Large LCD and temp/humidity readout |
Aowel 2 Heat/1 Cool Non-Programmable Thermostat
Best for: Homeowners with simple heat pump systems needing aux or emergency heat support. This model supports up to 2 heating and 1 cooling stage and includes a room temperature and humidity monitor. It’s a straightforward non-programmable option suitable for maintenance-focused installations.
Why selected: Compatibility with heat pump systems that include auxiliary or emergency heat makes this thermostat versatile for standard residential heat pumps. The backlit display aids visibility in dim rooms.
Limitations: Before buying, verify compatibility with your specific HVAC configuration and wall size to ensure proper wall coverage and fit. It does not offer advanced scheduling or remote control features.
Heagstat H721 Non-Programmable Heat Pump Thermostat
Best for: Users who want a straightforward manual control for a 2H/1C heat pump with emergency heat option. The large display and simple operation suit all ages.
Why selected: It provides clear manual operation and explicit compatibility notes, helping buyers confirm system fit before purchase.
Limitations: Not compatible with multi-stage systems beyond 2H/1C, certain hydronic setups, or line-voltage installations. Manual emergency heating requires user action.
Thermostat For Heat Pump, Non-Programmable
Best for: DIY installers seeking a quick setup for home heat pump or conventional single-stage systems. It supports 2H/1C heat pump or 1H/1C configurations with a white backlight display.
Why selected: The unit emphasizes easy installation with universal terminal blocks and a backlit LCD for readability. It also notes dual power supply suitability.
Limitations: Not compatible with two-transformer or high-stage multi-systems; some systems require a C-wire, which may not be included.
meross Matter Smart Thermostat
Best for: Homes seeking a smart thermostat with broad platform support. It works with Alexa, Apple Home, Google Assistant, and Matter-certified ecosystems.
Why selected: Matter integration enables local control and broad compatibility for smart-home users looking to streamline routines and energy savings. The device targets typical HVAC systems, but a C-wire is often required.
Limitations: Some wiring configurations may require a C wire, which is not included. Not suitable for certain line-voltage or baseboard electric heaters.
Garystat Non-Programmable Heat Pump Thermostat
Best for: Budget-conscious buyers who need a 2H/1C heat pump thermostat with a temperature and humidity monitor.
Why selected: It lists compatibility with heat pump systems and conventional furnaces, providing a practical option for mixed setups.
Limitations: It does not work with electric baseboard heat or high-voltage 110-240V systems, so verify your home’s wiring before purchase.
Buying Guide: Key Considerations When Choosing a Thermostat With Aux Heat
Do you have a heat pump with auxiliary or emergency heat? If yes, ensure the thermostat supports aux or emergency heat. Check compatibility with your system’s stage configuration (for example, 2H/1C or more).
What type of control do you prefer? Non-programmable units offer simple, reliable operation, while smart thermostats enable remote control, scheduling, and energy insights. Consider whether you want voice assistant or Matter integration.
Power and wiring: Some models require a C-wire for reliable operation. Others work with batteries or multiple power sources. Confirm your existing wiring before purchasing.
Display and usability: A backlit display improves readability in dim spaces. Large digits help with quick adjustments, especially for households with limited mobility.
Compatibility notes: Always verify system type (gas, electric, heat pump) and transformer counts. Some devices exclude certain multi-stage or line-voltage systems.
Frequently Asked Questions
What does “aux heat” mean on a thermostat?
Auxiliary heat is an additional heating source used to supplement the heat pump when the outdoor temperature is very cold or extra warmth is needed.
Do all thermostats work with heat pumps?
No. Only models labeled for heat pump compatibility (including aux or emergency heat) will operate properly in those systems.
Is a C-wire required for smart thermostats?
Many smart thermostats require a C-wire for continuous power, but some can operate with alternatives or battery power. Check the installation guide for specifics.
Can I install a thermostat myself?
Many non-programmable models are designed for DIY installation with universal terminal blocks. Always follow the manufacturer’s wiring diagram and ensure power is off before starting.
Will upgrading my thermostat save energy?
Yes, especially when paired with programmable scheduling or smart features that optimize heating and cooling based on occupancy and routines.