When is it cheaper to rent a Chicago Pneumatic CPS 185 Compressor, #8 by the week than by the day?

From day 4. 4 days at the $192 day rate would be $768, but the weekly rate caps it at $765.

When is it cheaper to rent a Chicago Pneumatic CPS 185 Compressor, #8 on the 28-day rate?

From day 18. At that point the week-and-day composition reaches the $2,132 28-day rate, and the price stops climbing for the rest of the cycle.

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.

Chicago Pneumatic CPS 185 Compressor, #8

See the listing →

Simon Equipment Rentals · Compressors - Air Compressors

Day: $192
Week: $765
28 days: $2,132

Daily stops winning on

day 4

4 days at the day rate would be $768. On the week rate it is $765.

Weekly stops winning on

day 18

18 days at the day rate would be $3,456. On the 28-day rate it is $2,132.

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 Chicago Pneumatic CPS 185 Compressor, #8, days 1 to 35
Days	At the day rate	On the ladder	Difference	Rate in play
1	$192	$192	—	day
2	$384	$384	—	day
3	$576	$576	—	day
4	$768	$765	you save $3	week
5	$960	$765	you save $195	week
6	$1,152	$765	you save $387	week
7	$1,344	$765	you save $579	week
8	$1,536	$957	you save $579	week
9	$1,728	$1,149	you save $579	week
10	$1,920	$1,341	you save $579	week
11	$2,112	$1,530	you save $582	week
12	$2,304	$1,530	you save $774	week
13	$2,496	$1,530	you save $966	week
14	$2,688	$1,530	you save $1,158	week
15	$2,880	$1,722	you save $1,158	week
16	$3,072	$1,914	you save $1,158	week
17	$3,264	$2,106	you save $1,158	week
18	$3,456	$2,132	you save $1,324	28-day
19	$3,648	$2,132	you save $1,516	28-day
20	$3,840	$2,132	you save $1,708	28-day
21	$4,032	$2,132	you save $1,900	28-day
22	$4,224	$2,132	you save $2,092	28-day
23	$4,416	$2,132	you save $2,284	28-day
24	$4,608	$2,132	you save $2,476	28-day
25	$4,800	$2,132	you save $2,668	28-day
26	$4,992	$2,132	you save $2,860	28-day
27	$5,184	$2,132	you save $3,052	28-day
28	$5,376	$2,132	you save $3,244	28-day
29	$5,568	$2,324	you save $3,244	day
30	$5,760	$2,516	you save $3,244	day
31	$5,952	$2,708	you save $3,244	day
32	$6,144	$2,897	you save $3,247	week
33	$6,336	$2,897	you save $3,439	week
34	$6,528	$2,897	you save $3,631	week
35	$6,720	$2,897	you save $3,823	week

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: $2,132
Rental protection (RPP): $319.80
Service fee: $213.20
Estimated total: $2,665

Pick a listing

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.