If you’re聽shopping聽for a new聽home comfort聽system,聽odds are聽you’ve heard about the efficient, cost-effective and聽sustainable聽features of聽heat pumps.聽Heat pumps聽have been聽popular聽in warm climates for聽a very long time. But聽since聽they聽use聽heat from the outdoor air and transfer it inside, conventional wisdom聽recommends聽that installing them in cold climates is not聽sensible. This聽could聽have you聽wondering聽if a heat pump is聽a better聽choice for your home in the Northern U.S. or Canada.
Before going聽into more detail, rest assured that modern, cold-weather heat pumps are聽suitable聽for northern climates.聽Over the past聽decade, the聽acceptance聽of heat pump technology has聽surged聽in Northern European countries聽like聽Norway and Sweden. With聽frequent聽January temperatures聽sitting聽around 20 degrees F, homeowners in these聽communities聽obviously聽rely on聽powerful聽heating options. Those who have installed cold-climate heat pumps have聽been delighted to discover聽that they聽meet聽their needs perfectly.
What Makes Cold-Climate Heat Pumps聽Successful聽at Low Temperatures?
Heat pump technology聽was once聽too weak聽for聽cold聽climates. As the temperature聽fell聽below freezing, these systems were聽just聽unable to聽extract聽enough heat to聽effectively聽warm a house. But this is no longer聽accurate. Here are the聽advanced聽features聽used in聽cold-climate heat pumps that聽enable聽them to聽operate聽efficiently at temperatures聽below聽0 degrees F.
- 颁辞濒诲-飞别补迟丑别谤听谤别蹿谤颈驳别谤补苍迟蝉聽have a lower boiling point聽compared to聽traditional heat pump refrigerants,聽helping聽them to聽collect聽more heat energy from cold air.
- Multi-stage compressors聽function聽at lower speeds in聽mild聽weather and聽transition聽to higher speeds in聽extreme聽cold. This聽increases聽efficiency in聽varying聽weather conditions and keeps the indoor temperature more聽stable.
- Variable-speed fans聽use聽multi-stage compressors to聽supply聽heated air at the proper rate.
- The聽upgraded聽coil design聽found聽in most modern heat pumps聽features聽grooved copper tubing with a聽greater聽surface area,聽helping聽the unit to聽transfer聽heat more efficiently.
- Flash injection聽opens up聽a shortcut in the refrigerant loop to聽improve聽cold-weather heating performance. Efficiency聽drops聽a bit in this mode, but it’s still聽better than聽counting on聽a backup electric resistance heater.
- 叠别迟迟别谤听尘辞迟辞谤蝉聽use聽less electricity to聽increase聽energy savings.
- Other engineering聽optimizations聽like聽weaker聽ambient flow rates,聽increased聽compressor capacity and聽improved聽compression cycle configurations further聽reduce聽energy consumption in聽frigid聽winter weather.
Traditional Heating Systems vs. Heat Pumps in Colder Climates
Heat pump efficiency is聽measured聽by its heating seasonal performance factor (HSPF), which聽illustrates聽the total heating output聽throughout聽the heating season divided by the energy consumed聽for聽that period. The higher the HSPF, the better the efficiency.
Starting聽in 2023, the聽nationwide聽minimum efficiency rating for heat pumps will be 8.8 HSPF.聽The majority of聽cold-climate heat pumps聽offer聽ratings of 10 HSPF or higher,聽helping聽them to operate at up to 400% efficiency in聽moderate聽weather. In other words, they move four times more energy than they聽use聽in the process.
Performance聽falls聽as the temperature drops, but聽various聽models are still around 100% efficient in sub-freezing conditions. Compare this to brand-new, high-efficiency furnaces, which聽max聽out at about 98% efficiency.
In terms of actual savings, results聽may聽vary. The biggest savers are聽usually聽people who heat with聽common聽fuels聽like聽propane and oil, as well as those who use electric furnaces or electric baseboard heaters.
However, heating with natural gas still聽is generally聽less expensive than聽installing聽a heat pump. The cost聽gap聽is based on聽how聽severe聽the winter is, the utility聽rates聽in your area, whether your聽system聽was installed correctly and whether you聽use聽solar panels to offset electricity costs.
Other Factors to聽Take into Consideration
If you’re聽thinking of聽transitioning聽from a traditional furnace, boiler or electric heater to a cold-climate heat pump,聽don't forget聽these聽other聽factors:
- Design and installation: Cold-weather heat pumps are聽designed聽for efficiency, but they聽must be聽sized, designed and installed聽correctly聽to perform at their聽peak. Factors聽like聽home insulation levels and the聽location聽of the outdoor unit can also聽reduce聽system performance.
- Tax credits: You can save on heat pump installation costs with聽聽from the聽federal聽government. The tax credit amount for qualifying installations is $300聽up to聽the end of 2022.
- Solar panels: Heat pumps聽are powered by聽electricity, so they聽pair聽well with solar panels. This聽combo聽can聽lower聽your energy bills even further.
Start Saving with a Cold-Climate Heat Pump
Whether you’re replacing聽a current聽HVAC system or聽comparing聽options for a new property, 天美传媒 can help you make a cost-effective聽decision. We’ll聽evaluate聽your home comfort needs,聽go over聽your budget and聽recommend聽the best equipment, which聽could聽be a cold-climate heat pump or聽another kind of system. To ask questions or schedule a heat pump installation estimate, please contact your聽local 天美传媒 office today.
