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2. Seasonal energy efficiency ratio - Wikipedia

   en.wikipedia.org/wiki/Seasonal_energy_efficiency...

   The energy efficiency ratio (EER) of a particular cooling device is the ratio of output cooling energy (in BTUs) to input electrical energy (in watt-hours) at a given operating point. EER is generally calculated using a 95 °F (35 °C) outside temperature and an inside (actually return-air) temperature of 80 °F (27 °C) and 50% relative humidity.

3. Ground source heat pump - Wikipedia

   en.wikipedia.org/wiki/Ground_source_heat_pump

   Annual greenhouse gas (GHG) savings from using a ground source heat pump instead of a high-efficiency furnace in a detached residence (assuming no specific supply of renewable energy) Country Electricity CO 2 Emissions Intensity GHG savings relative to natural gas heating oil electric heating; Canada: 223 ton/GWh: 2.7 ton/yr: 5.3 ton/yr: 3.4 ton/yr

4. Heating seasonal performance factor - Wikipedia

   en.wikipedia.org/wiki/Heating_seasonal...

   HSPF is defined as the ratio of heat output (measured in BTUs) over the heating season to electricity used (measured in watt-hours ). [1] [2] It therefore has units of BTU/watt-hr. The higher the HSPF rating of a unit, the more energy efficient it is. An electrical resistance heater, which is not considered efficient, has an HSPF of 3.41.

5. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   e. A heat pump is a device that consumes work (or electricity) to transfer heat from a cold heat sink to a hot heat sink. Specifically, the heat pump transfers thermal energy using a refrigeration cycle, cooling the cool space and warming the warm space. [1] In cold weather, a heat pump can move heat from the cool outdoors to warm a house (e.g ...

6. How much should a house down payment be? - AOL

   www.aol.com/finance/much-house-down-payment...

   0%. It's important to note that the 3% minimum down payment for conventional loans is mainly for first-time homebuyers. If you've owned a home in the past three years, the minimum is generally 5% ...

7. 15 products to help you stay cool in the extreme heat: 'A ...

   www.aol.com/lifestyle/products-to-help-you-stay...

   The Green Pet Shop Cooling Pet Pad (Large) $60 at Amazon. JISULIFE Portable Neck Fan. $26 at Walmart. See 10 more. In fact, experts have a phrase for surviving extreme heat: "Wetter is better ...