Bulk Purchase and Rebates for New Saddle Style Window Air Conditioners that Heat and Cool
A Gradient Saddle Style Heat Pump
The Village of Oak Park has started offering rebates for electric appliances to ease the transition to electrification:
Heat Pump Clothes Dryers - $300
Induction Cooktops and Ranges - $400
Saddle-style Window Heat Pump - $500
To further take advantage of these rebates, OPCAN is organizing a bulk purchase of Gradient Saddle Style Heat Pumps. If ten units are purchased at one time, Gradient will offer an additional discount of $600, for a total of $1,100 discounted from the $3,800 sticker price.
If you are interested in participating in this bulk purchase, fill out our interest form at: bit.ly/op-saddle-heat-pump
About Saddle Style Heat Pumps
They are called “saddle style” because they fit over the sill of the window like a saddle, so the window view is not blocked. The heating and cooling coils are inside, and the compressor is outside. It is super quiet.
Installation is DIY easy and plugs into a standard 120-volt outlet. It is also a cold-climate heat pump, which means it can provide full capacity down to 5°F and continue to function at -13°F. The version made by Gradient of San Francisco has a capacity of 9,000 BTU per hour, which typically heats and cools rooms of about 400 to 500 square feet.
If you have questions about these heat pumps, call 708-205-5850
Gradient Saddle Heat Pump Performance and Cost
Performance test
A Gradient saddle-type heat pump was installed in a home in the Oak Park area on October 20, 2025. The heat pump was connected to a data logger.
Time period: Oct.20, 2025 to Feb.27, 2026 Number of days: 131 Number of Heating Degree Days (HDD): 4,099.1
(An HDD is the average daily temperature subtracted from a base temperature of 65 F. The weather station at Midway airport in Chicago provides that number.)
Total Energy used: 466 kWhAverage total energy cost per kWh: $0.18/kWh
(This was calculated by dividing the total cost for energy, taxes, delivery, etc., by the total energy used. This was done for several bills and averaged.)
Total Energy cost: $83.88 (466 kWh X $0.18/kWh = $83.88) Energy cost per day: $0.64/day ($83.88/131 days =$0.64/day)
Energy used per day: 3.66 kWh/day (466 kWh/131 days =3.56 kWh/day. By comparison, a 100-watt lamp uses 100 W X 24 hours/day =2400 Wh/day =2.4 kWh/day)
Energy cost per Heating Degree Day: ($83.88/4099.1 HDD =$0.02/HDD)
Specifications
Heating capacity:
9,000 BTU/hr. at 47 to 17 °F 7,200 BTU/hr. at 5°F 7,026 BTU/hr. at -13 °F
Heating Coefficient Of Performance (COP): 4.04 at 47 °F, 2.37 at 7°F, 2.06 at 5°F, 1.59 at -13 °F.
Cooling Capacity: 9,300 BTU/hr. Cooling EER: 13.6 BTU/hr. per watt
Noise: 47 db(A high, 44 db(A) medium, 38 db(A) low Window size: At least 25.5 inches wide, sill 24 inches above floor.