Model
Porter & Charles DWVFI 18
Rank #311 means 310 of the 709 dishwasher models we track cost less to run each year; the 18th efficiency percentile means it uses less energy for its size than 18% of those models.
What does the Porter & Charles DWVFI 18 cost to run per year?
The Porter & Charles DWVFI 18 costs about $44 a year to run, a middle-of-the-pack figure at rank #311 of 709. It uses 22.1% less energy than the U.S. federal standard model in its class, which would cost about $57/yr to run, a saving of roughly $13 a year. Once capacity is factored in, its efficiency percentile of 18 is among the lowest in its class. At 10 place settings, it is a small dishwasher for the class, which runs 2 to 18 place settings; size and efficiency are the two levers behind the figure above, and this dataset does not carry a separate efficiency-factor column for this class.
Immediately around it on the leaderboard, the Kenmore 1459# at $44/yr runs a little cheaper and the Porter & Charles DWVFI 82 at $44/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A dishwasher typically stays in service for somewhere around 9 years; over that span, the Porter & Charles DWVFI 18's $44/yr adds up to roughly $396 in electricity alone, before purchase price or repairs.
Also sold as: Avanti DWF18V**.
By the numbers
The Porter & Charles DWVFI 18 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 $44/yr, here is what the Porter & Charles DWVFI 18 adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Porter & Charles DWVFI 18 costs about $440. That is roughly $130 less than a standard model in its class, which would run closer to $570 over the same ten years.
How the Porter & Charles DWVFI 18 compares
The dishwasher class we track runs from $15 to $45 a year. At $44/yr, it sits right on the class median of $44, and it is about $29 a year more than the cheapest dishwasher to run at $15. Against the US federal standard model for its class at about $57/yr, the Porter & Charles DWVFI 18 uses 22.1% less energy.
What drives its running cost
At 10 place settings, the Porter & Charles DWVFI 18 is a small dishwasher for its class, which spans 2 to 18 place settings with a median of 14 place settings, 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.
- Place-setting capacity. A larger dishwasher heats more water per cycle, so bigger capacity generally means a higher annual energy figure, independent of how efficient the unit is.
- Water heating. The booster heater that brings water up to sanitizing temperature is usually the single largest electrical load in a dishwasher's cycle.
- Cycle length and drying method. Cycle selection, eco versus heavy, air-dry versus heated-dry, moves real running cost more than most owners realize for a given capacity.
Common questions
Is the Porter & Charles DWVFI 18 cheap to run?
It is about average. At $44 a year it ranks #311 of 709 dishwasher models we track, close to the middle of its class on running cost.
How much does the Porter & Charles DWVFI 18 cost per month?
Roughly $3.7/mo, spreading the $44/yr estimate evenly across twelve months at $0.1856/kWh. Actual monthly bills swing with your rate and usage pattern.
How is this running-cost figure calculated?
We take the model's published annual energy use of 239 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $44 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Porter & Charles DWVFI 18 for its size?
18th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
Source
ES_1123029_DWVFI18_083120231524661_3321282View certified dishwasher listingsENERGY STAR data as of July 2026Porter & Charles and DWVFI 18 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.