Break-even duration

Equipment rents on three rates — a day rate, a week rate and a 28-day rate — and the cheapest one changes as the job runs long. This finds the two days where it changes, on a real listing’s real published rates.

Portable Air Conditioner 12,000 BTU

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Bobby Johnson · Air Conditioners

Day
$25
Week
$147
28 days
$390

Daily stops winning on

day 6

6 days at the day rate would be $150. On the week rate it is $147.

Weekly stops winning on

day 18

18 days at the day rate would be $450. On the 28-day rate it is $390.

The working

Whole weeks bill at the week rate; the leftover days bill at the day rate but never add up to more than one extra week; and a whole 28-day cycle never costs more than the 28-day rate. That is the rule, applied one day at a time.

Rental price by duration for Portable Air Conditioner 12,000 BTU, days 1 to 35
DaysAt the day rateOn the ladderDifferenceRate in play
1$25$25—day
2$50$50—day
3$75$75—day
4$100$100—day
5$125$125—day
6$150$147you save $3week
7$175$147you save $28week
8$200$172you save $28week
9$225$197you save $28week
10$250$222you save $28week
11$275$247you save $28week
12$300$272you save $28week
13$325$294you save $31week
14$350$294you save $56week
15$375$319you save $56week
16$400$344you save $56week
17$425$369you save $56week
18$450$390you save $6028-day
19$475$390you save $8528-day
20$500$390you save $11028-day
21$525$390you save $13528-day
22$550$390you save $16028-day
23$575$390you save $18528-day
24$600$390you save $21028-day
25$625$390you save $23528-day
26$650$390you save $26028-day
27$675$390you save $28528-day
28$700$390you save $31028-day
29$725$415you save $310day
30$750$440you save $310day
31$775$465you save $310day
32$800$490you save $310day
33$825$515you save $310day
34$850$537you save $313week
35$875$537you save $338week

Rental rates only. Protection and the marketplace service fee are added on top — see the checkout figure below.

What checkout will quote you

Rental · 18 days
$390
Rental protection (RPP)
$58.50
Service fee
$39
Estimated total
$487.50

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The numbers come from one operator’s published rates, so the tool needs to know whose.

Where these numbers come from

The rates are the operator’s own, read live from their listing. The arithmetic is the same best-price billing engine that produces 2Quip invoices — not a second copy written for this page — run on the industry-standard terms: a 28-day cycle, whole weeks at the week rate, leftover days at the day rate capped at one more week.

An operator can agree different terms on an individual rental, and a long rental bills per 28-day cycle rather than in one lump. So treat this as what the rate card says, and the operator’s quote as what you are agreeing to.