While residential air-source heat pumps offer exceptional energy efficiency and year-round heating and cooling versatility, they come with several notable downsides. One major drawback is that their heating capacity and efficiency decrease significantly when outdoor temperatures drop below freezing, requiring expensive auxiliary electric resistance heating strips or a dual-fuel gas backup system to keep homes warm in harsh climates. Additionally, heat pumps are complex mechanical systems that operate year-round without rest, leading to higher wear and tear on compressors and reversing valves compared to seasonal air conditioners. They also deliver moderate, steady airflow rather than intense bursts of hot air, which can feel drafty to some homeowners. You can verify system suitability by assessing your local climate and utility rates before installation.
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