10 Best Heat Pumps 2025 in the United States

The WOPOLTOP 100,000 BTU pool heat pump is designed to efficiently heat and cool swimming pools up to 26,000 gallons, making it suitable for medium to large pools. Its standout feature is the full DC inverter technology, which adjusts heating power smoothly to save energy and reduce wear from constant on/off cycling. With a high coefficient of performance (COP) around 6.8, it operates efficiently under various conditions, which means lower electricity bills.

The unit supports both heating and cooling, controllable remotely via a smartphone app thanks to built-in WiFi, providing great convenience for managing pool temperature from anywhere. Noise is managed reasonably well, with sound-reducing features that keep it around 47 to 58 decibels at 1 meter—similar to a quiet conversation, though some users might still notice it. The heat pump’s casing uses durable, weather-resistant ABS material, ensuring it can handle outdoor exposure without rust or damage, but it is fairly heavy and sizable, which may require careful installation.

This heat pump is a strong choice for pool owners wanting reliable, energy-efficient heating and cooling with smart controls. Those sensitive to sound or with limited space should consider the unit's noise level and size before purchase.

The DELLA Hyper Heat Mini Split is a solid choice for heating and cooling rooms up to about 550 square feet. Its 12,000 BTU capacity is well-suited for small to medium spaces like bedrooms, offices, or small living areas. One of its standout features is energy efficiency, boasting a high SEER2 rating of 22 and an HSPF of 9.0, which means it should keep your energy bills lower compared to less efficient units. It works well even in very cold weather, down to -13°F, thanks to its hyper heat technology and an advanced defrost system that helps maintain warmth without freezing issues.

The unit uses the common R-410A refrigerant, which is environmentally friendlier than older types, though it can't be shipped to Washington state due to local restrictions. Noise-wise, it operates quietly at 27 dB, so it won't disturb your daily activities or sleep. The mini split is WiFi and Alexa enabled, allowing easy remote control through a smartphone or voice commands, adding convenience. Installation requires professional help since it comes pre-charged and needs precise setup for optimal performance. The indoor unit has a sleek design that fits most interiors and includes simple filter maintenance.

This unit is relatively heavy at over 80 pounds, and professional installation adds to the upfront cost and complexity. Also, if you live in Washington state, this model isn't available due to refrigerant restrictions. For those seeking a reliable, energy-efficient heat pump that performs well in cold climates and who are comfortable with professional installation, this model is a worthy option.

The Cooper & Hunter 9,000 BTU mini split heat pump is a solid choice for cooling and heating small to medium rooms, like bedrooms or living areas. Its cooling capacity (9,000 BTU or 0.75 tons) suits spaces roughly up to 400 square feet. One of its strongest points is the high energy efficiency with a SEER rating of 21.5, meaning it uses electricity smartly to keep energy bills lower. It also uses R-410A refrigerant, which is common and environmentally friendlier than older types. The unit runs very quietly at just 22 decibels, making it ideal for bedrooms or quiet spaces. The inverter compressor improves performance by adjusting power as needed, which enhances comfort and efficiency.

It includes a smart port adapter and WiFi control through an app, allowing easy temperature and mode changes without needing to be near the unit. Heating works well down to 5°F, which covers most mild to moderate winter climates. Installation requires a professional, as this is not a DIY unit, and the kit provides a good length of pre-charged copper lines and wiring. Some users might find the price and installation cost higher compared to window units, but the quiet operation, energy efficiency, and smart features justify it for those wanting a long-term, comfortable heating and cooling solution.

This heat pump is ideal for homeowners seeking an energy-efficient, quiet, and smart-controlled system for smaller spaces who are prepared to invest in professional installation.