How window‑mounted heat pumps can give tenants efficient heating and cooling
Summary
Window-mounted heat pumps are small devices that people can install themselves to heat or cool their homes without major remodeling. They use less electricity than traditional heating or cooling systems and are cheaper than permanent heat pump installations, although they are less effective in very cold weather and for large spaces.Key Facts
- Heating and cooling use 35% of all energy in U.S. buildings each year.
- Heat pumps move heat into or out of a building instead of creating it, using less electricity.
- Traditional mini-split heat pumps need professional installation and can cost up to $10,000.
- Window heat pumps are self-contained, plug into a wall outlet, and cost between $3,000 and $4,000.
- These units can provide both heating and cooling but have lower capacity, suitable for smaller spaces.
- Window heat pumps work less efficiently and produce less heat in very cold outdoor temperatures.
- Some cheaper window models are available but may be noisy, less efficient, and not rated for cold weather.
- Federal subsidies for these heat pumps ended in 2025, but some local incentives may still exist.
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