When is it cheaper to rent a Firman 9400W Dual-Fuel Generator by the week than by the day?

From day 5. 5 days at the $90 day rate would be $450, but the weekly rate caps it at $400.

When is it cheaper to rent a Firman 9400W Dual-Fuel Generator on the 28-day rate?

From day 16. At that point the week-and-day composition reaches the $900 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.

Firman 9400W Dual-Fuel Generator

See the listing →

Travis Kinney · Generators - Gas

Day: $90
Week: $400
28 days: $900

Daily stops winning on

day 5

5 days at the day rate would be $450. On the week rate it is $400.

Weekly stops winning on

day 16

16 days at the day rate would be $1,440. On the 28-day rate it is $900.

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 Firman 9400W Dual-Fuel Generator, days 1 to 35
Days	At the day rate	On the ladder	Difference	Rate in play
1	$90	$90	—	day
2	$180	$180	—	day
3	$270	$270	—	day
4	$360	$360	—	day
5	$450	$400	you save $50	week
6	$540	$400	you save $140	week
7	$630	$400	you save $230	week
8	$720	$490	you save $230	week
9	$810	$580	you save $230	week
10	$900	$670	you save $230	week
11	$990	$760	you save $230	week
12	$1,080	$800	you save $280	week
13	$1,170	$800	you save $370	week
14	$1,260	$800	you save $460	week
15	$1,350	$890	you save $460	week
16	$1,440	$900	you save $540	28-day
17	$1,530	$900	you save $630	28-day
18	$1,620	$900	you save $720	28-day
19	$1,710	$900	you save $810	28-day
20	$1,800	$900	you save $900	28-day
21	$1,890	$900	you save $990	28-day
22	$1,980	$900	you save $1,080	28-day
23	$2,070	$900	you save $1,170	28-day
24	$2,160	$900	you save $1,260	28-day
25	$2,250	$900	you save $1,350	28-day
26	$2,340	$900	you save $1,440	28-day
27	$2,430	$900	you save $1,530	28-day
28	$2,520	$900	you save $1,620	28-day
29	$2,610	$990	you save $1,620	day
30	$2,700	$1,080	you save $1,620	day
31	$2,790	$1,170	you save $1,620	day
32	$2,880	$1,260	you save $1,620	day
33	$2,970	$1,300	you save $1,670	week
34	$3,060	$1,300	you save $1,760	week
35	$3,150	$1,300	you save $1,850	week

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

What checkout will quote you

Our pricing service couldn’t be reached just now, so there’s no checkout figure to show. The rate table above is unaffected — it’s the operator’s published card.

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.