10 Best Heat Pump Thermostats 2025 in the United States

The Google Nest Learning Thermostat (4th Gen) is an impressive choice for anyone looking to optimize their home heating and cooling systems. Its compatibility with various heating systems, including heat pumps, means it's likely to work well in most homes. The thermostat's ability to learn your preferences and automatically adjust settings can lead to significant energy savings, with reports of average savings of 12% on heating and 15% on cooling bills. The inclusion of the Nest Temperature Sensor enhances its functionality by allowing you to manage temperature in different rooms, making it a great option for larger spaces or homes with temperature imbalances.

A major strength is its user-friendly design. The large, bright display and the ability to control it via the Google Home app or through voice commands with Alexa or Google Assistant make it accessible for most users, even those who aren't tech-savvy. Installation is relatively straightforward, typically taking about 40 minutes, which is a plus for DIY enthusiasts.

However, there are some limitations to consider. While the thermostat is described as easy to install, those with complicated wiring might still need professional help. Additionally, while it works with a variety of systems, it’s essential to verify compatibility with your specific setup using the Nest Compatibility Checker.

The Google Nest Thermostat is a modern smart thermostat designed to help you save energy while keeping your home comfortable. It works well with many heating and cooling systems, including heat pumps, but some setups might require an additional power wire (C wire) or accessory, so checking compatibility before buying is important. You can create and adjust your heating and cooling schedule easily through the Google Home app on your phone, which is great for controlling your home climate from anywhere. It also supports voice commands through Google Assistant and other smart home devices, adding convenience.

In terms of smart features, the Nest Thermostat learns when you’re away and lowers energy use automatically, helping reduce your bills. It also monitors your HVAC system and sends alerts if something needs attention, which can prevent costly repairs. The interface is simple, with a clear LCD screen and a compact design that fits nicely on your wall. Installation is generally straightforward, though some users might find it tricky if their system lacks a C wire.

Energy efficiency is a strong point here, as the thermostat is ENERGY STAR certified and includes tools like Savings Finder to recommend ways to save more. The device runs on included batteries, avoiding complex wiring for power, but you’ll need to replace batteries occasionally. This thermostat suits homeowners wanting a smart, programmable option that integrates smoothly with popular smart home ecosystems, especially if you want to monitor and optimize your energy use without deep technical know-how. However, if your HVAC system is unusual or lacks a C wire, you may need extra parts or professional help during installation.

The Honeywell Home RTH9585WF thermostat is a solid choice for homeowners who want a smart, programmable heat pump thermostat that’s easy to use and energy efficient. Its bright, customizable color touchscreen makes setting schedules straightforward and adds a personal touch to your home décor. This model supports 7-day programming, allowing you to tailor temperature settings throughout the week, which is great for saving energy and comfort. It’s Energy Star certified and offers monthly energy reports plus tips, helping users track and reduce power usage effectively.

Smart features include compatibility with Amazon Alexa, Google Home, and other smart home systems, so you can control your thermostat remotely via your phone or voice commands. It also supports utility demand response programs, which may earn you rebates by adjusting your system slightly during peak energy times. On the compatibility front, it works well with most forced air systems, hot water, steam, and heat pumps with electric backup, but it requires a C-wire for power and does not support electric baseboard heating (line voltage systems). Installation might require checking for a C-wire or using an adapter, which could be a hurdle if your home wiring differs.

Fan control options are flexible, offering always-on, automatic, or circulate modes to suit your preferences. The thermostat is not suitable for heating-only oil furnace systems without a C-wire. For those with a compatible HVAC setup seeking a user-friendly, energy-saving smart thermostat with good programmability, this Honeywell model is a strong option. Just be sure your home's wiring supports it to avoid extra installation effort.