Model
Gradient CCHP11
Rank #118 means 117 of the 404 room air conditioner models we track cost less to run each year; the 98th efficiency percentile means it uses less energy for its size than 98% of those models.
What does the Gradient CCHP11 cost to run per year?
Among the 404 room air conditioner models we track, the Gradient CCHP11 sits in the below-average-cost group, rank #118, at roughly $77 a year. It uses 71% less energy than the U.S. federal standard model in its class, which would cost about $266/yr to run, a saving of roughly $189 a year. Its size-adjusted efficiency percentile of 98 means the low running cost is not just a function of size; almost nothing in the class beats it on efficiency once capacity is accounted for. The CEER figure of 16.8 on this model captures combined energy efficiency ratio, the main efficiency lever ENERGY STAR tracks for this class.
Immediately around it on the leaderboard, the Midea MWAUQB-08HRFN8-BCL0 at $77/yr runs a little cheaper and the Lg LW8024IVSM at $79/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A room air conditioner typically stays in service for somewhere around 10 years; over that span, the Gradient CCHP11's $77/yr adds up to roughly $770 in electricity alone, before purchase price or repairs.
By the numbers
The Gradient CCHP11 normalized against its whole class, so each figure means something.
What it costs you over time
Running cost is an every-year number, so it compounds. At $77/yr, here is what the Gradient CCHP11 adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Gradient CCHP11 costs about $770. That is roughly $1890 less than a standard model in its class, which would run closer to $2660 over the same ten years.
How the Gradient CCHP11 compares
The room air conditioner class we track runs from $51 to $389 a year. At $77/yr, it runs about $22 a year cheaper than the class median of $99, and it is about $26 a year more than the cheapest room air conditioner to run at $51. Against the US federal standard model for its class at about $266/yr, the Gradient CCHP11 uses 71% less energy.
What drives its running cost
At 9300 BTU/hr, the Gradient CCHP11 is a small room air conditioner for its class, which spans 5000 to 34100 BTU/hr with a median of 10100 BTU/hr, at the small end of the class, capacity itself is doing a lot of the work to keep that figure down, separate from how efficient the unit actually is. Its CEER of 16.8, above the class median of 15, reflects combined energy efficiency ratio: a higher figure means it wrings more useful work out of every kilowatt-hour, so it is the efficiency lever to weigh against raw size.
- Combined Energy Efficiency Ratio (CEER). Two units with the same BTU rating can post very different running costs, and CEER is the figure that explains most of that gap.
- BTU cooling capacity. BTU rating scales with room size, and it is usually the first driver of an air conditioner's running cost, ahead of its CEER figure.
- Thermostat and mode usage. How the unit is actually operated, thermostat cycling versus a fixed setting, moves real electricity use more than the rated BTU or CEER figure alone.
Common questions
Is the Gradient CCHP11 cheap to run?
Yes. Its $77/yr running cost puts it at rank #118 of 404, below what most room air conditioner models we track cost to run.
How much does the Gradient CCHP11 cost per month?
About $6.42 a month, which is the $77 annual estimate spread across twelve months at the US average rate of $0.1856/kWh. Your own bill scales with your local electricity rate and how heavily you use it.
How is this running-cost figure calculated?
The formula is annual kWh times price per kWh: 415 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $77 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Gradient CCHP11 for its size?
98th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
Source
ES_1147758_CCHP11_08302024094517_5650293View certified room air conditioner listingsENERGY STAR data as of July 2026Gradient and CCHP11 are used here for identification only and are not endorsements. Figures are computed by WattWise Labs from public ENERGY STAR data, not measured in our own lab.