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www.recinfocenter.com/aspx/News.aspx?NewsID=2070

Questline: The decision on whether to install a single-stage or a two-stage air-source heat pump is a trade-off between cost and comfort. A two-stage heat pump will cost more to purchase but will cost less to operate. The two-stage blower and compressor combination will also provide more even heating and cooling.

www.reference.com/home-garden/two-stage-heat-pump-system...

The dual stage unit helps to eliminate the wide temperature swings associated with single-stage heat pumps. The single-stage unit operates at full speed or turned off. While the average temperature in the room is the setting of the thermostat, they vary several degrees as the unit cycles. The additional initial investment is relatively small ...

www.cooltoday.com/blog/heat-pump-buyers-guide-4-factors-to...

Two-stage heat pumps cost more upfront, but will cost less to operate. But people mainly get them because of the extra comfort they provide. Size. The heat pumps size is probably the most important factor when buying a heat pump. Too large or small and the system runs inefficiently and could breakdown.

www.pickhvac.com/faq/singal-stage-vs-two-stage-for-heat-pumpac

The technology is getting better, so the current SEER range for single-stage ACs and heat pumps is 13 on the low end. The most efficient single-stage air conditioner is the Lennox SL18XC1 with a top rating of 18.5 SEER. 2). Two-stage compressors are more efficient because they run on low most of the time. You’ll get better gas mileage driving ...

www.bryant.com/bryant/en/us/products/heat-pumps/286b

Enjoy high-efficiency cooling up to 17.5 SEER and money-saving heating up to 9.5 HSPF with this Bryant ® Evolution ® series heat pump. With 2-stage operation it adjusts to changing conditions for the best combination of energy savings, even temperature control, and summertime humidity management.

www.ecomfort.com/heating/two-stage-heat-pumps.html

Two-Stage Heat Pump superstore, specializing in Two-Stage Central Heat Pumps, Two-Stage Spilt System Heat Pumps and Two-Stage Central Spilt System Heat Pumps. Compare Two-Stage Central Heat Pump models, specs and prices. Consult with our experienced Two-Stage Heat Pump experts. Two-Stage Heat Pumps for sale.

www.heatpumpshq.com/best-single-stage-heat-pumps.html

One of the best single-stage heat pumps from the well-known name in HVAC industry, Carrier, is Infinity 15 heat pump, model 25HNB5, coming from the Infinity Series and qualified as the Better solution. With the cooling efficiency of 16 SEER and heating efficiency of 8.5 HSPF, 25HNB5 is qualified as the Energy Star model.

www.buildings.com/news/industry-news/articleid/15742/title/...

When choosing heat pumps for your next project, the two-stage heat pump unit is the clear choice for all around comfort and energy savings. Craig Fischbach has over 30 years of experience in the HVAC business. He is a product sales manager for Daikin McQuay

www.cooltoday.com/blog/what-is-a-two-stage-air-conditioner...

A two-stage air conditioner or heat pump takes into account the current temperature and adjusts its speed accordingly, improving your system’s overall efficiency. Why Is a Two-Stage Air Conditioner More Efficient? To understand why a two-stage AC is more efficient, it helps to understand why a single-stage air conditioner is so inefficient.

www.furnacecompare.com/heat-pumps/top-rated-series.html

Best installed by a highly-trained installers. #2. ... The YZH is a two-stage heat pump with a SEER efficiency rating of 18 and a 10.0 HSPF rating. It utilizes a QuietDrive System which uses a swept wing fan and a composite base pan which allows the system to keep sounds lower than 68 decibels. The unit has an internal pressure relief valve ...