Seyon Haywood, formerly an inmate at Illinois’s Shawnee Correctional Center, accused his auto mechanics teacher of attacking him. Guards charged him with making false statements. A disciplinary panel found him guilty and ordered him transferred to segregation for two months; the panel also revoked one month of good-time credit. After these events he was transferred to a different prison, where he remains in custody.
Haywood contends in this proceeding under 42 U.S.C. § 1983 that these penalties violate his right to speech, protected by the Constitution’s First Amendment (applied to states by the Fourteenth). He also alleges that the conditions of his confinement in segregation were cruel and unusual, violating the Eighth Amendment (again applied via the Fourteenth). The district court dismissed the first claim on the pleadings and granted summary judgment to defendants on the second. The only defendant against whom- Haywood still seeks damages is Jody Hathaway, Shawnee’s Warden during Haywood’s time there.
The district court dismissed the First Amendment claim because the disciplinary panel’s decision, which affected the duration of Haywood’s confinement, had not been set aside on collateral review or by executive clemency. The Supreme Court held in Heck v. Humphrey, 512 U.S. 477, 114 S.Ct. 2364, 129 L.Ed.2d 383 (1994), that § 1983 cannot be used to seek damages when relief necessarily implies the invalidity of a criminal conviction that remains in force. Edwards v. Balisok, 520 U.S. 641, 117 S.Ct. 1584, 137 L.Ed.2d 906 (1997), extends this approach to prison discipline. Haywood offers two responses: first, that his good-time credits have now been restored, and, second, that he has waived any challenge to the duration of his confinement and therefore (he contends) should be allowed to seek damages.
Although Haywood maintains that his good-time credits were restored while this appeal has been pending, the forms that Haywood has submitted show only the Department of Corrections’s calculation of his projected release date, not whether the disciplinary board’s decision has been vacated in the manner Heck and Edwards require. At all events, things that happen after a district court’s decision do not demonstrate that the court erred. Heck and Edwards hold that a § 1983 claim does not accrue until the conviction or discipline had been set aside. Once that occurs, the prisoner has the time allowed by the statute of limitations (two years in Illinois) to commence suit. A dismissal under Heck and Edwards is without prejudice to litigation after a conviction or disciplinary sanction is annulled.
As for his waiver of any challenge to the duration of confinement: that’s irrelevant because no matter what a prisoner demands, or waives, § 1983 cannot be used to contest the fact or duration of confinement. See Preiser v. Rodriguez, 411 U.S. 475, 93 S.Ct. 1827, 36 L.Ed.2d 439 (1973). From its outset, this suit has been a quest for money damages. That’s not all. The holding of Heck and Edwards is that a claim under § 1983 does not accrue as long as it would imply the invalidity of a conviction or disciplinary sanction that affects the duration of custody. If the claim has not accrued, it cannot matter what relief a prisoner seeks. Yet if it is possible to seek damages while waiving other relief, this must mean that the claim accrues immediately and the statute of limitations runs from the time of the events said to be wrongful. That would surprise the many prisoners, who wait patiently until they are entitled to sue under Heck, for if Haywood *1029is right the time to do so could have expired.
Haywood relies on Peralta v. Vasquez, 467 F.3d 98 (2d Cir. 2006), which held that a prisoner who foreswears any contest to the length of his confinement may . use § 1983 to seek damages. The Second Circuit understood “the purpose of the Heck favorable termination requirement [to be] to prevent prisoners from using § 1983 to vitiate collaterally a judicial or administrative decision that affected the overall length of their confinement”. 467 F.3d at 104. To disavow any collateral attack on the conviction or revocation of good-time credits is to take the situation outside Heck, the court concluded. We do not agree with that conclusion, which no other circuit has adopted (though none has expressly rejected it, either).
Heck and Edwards say that a challenge is not possible as long as it is inconsistent with the validity of a conviction or disciplinary sanction. See also Nelson v. Campbell, 541 U.S. 637, 646, 124 S.Ct. 2117, 158 L.Ed.2d 924 (2004): “a § 1983 suit for damages that would ‘necessarily imply the invalidity of the fact of an inmate’s conviction, or ‘necessarily imply5 the invalidity of the length of an1 inmate’s sentence, is not cognizable under § 1983 unless and until the inmate obtains favorable termination of a state, or federal habeas, challenge to his conviction or sentence.” This is a version of issue preclusion (collateral estop-pel), under which the outstanding criminal judgment or disciplinary sanction, as long as it stands, blocks any inconsistent civil judgment. See Simpson v. Nickel, 450 F.3d 303 (7th Cir. 2006); DeWalt v. Carter, 224 F.3d 607 (7th Cir. 2000); Carr v. O’Leary, 167 F.3d 1124 (7th Cir. 1999). It is a rationale considerably different from the one that Peralta attributed to the Court.
In Wallace v. Kato, 549 U.S. 384, 392, 127 S.Ct. 1091, 166 L.Ed.2d 973 (2007), the Justices emphasized another of Heck's rationales:
[Heck] ■ analogized [the § 1983] suit to one for malicious prosecution, an element of which is -the favorable termination of criminal proceedings. [512 U.S.] at 484, 114 S.Ct. 2364. We said:
“[I]n. order to recover damages for allegedly unconstitutional conviction or imprisonment, or for other harm caused by actions whose unlawfulness would render a conviction or sentence invalid, a § 1983 plaintiff must prove that the conviction or sentence has been reversed on direct appeal, expunged by executive order, declared invalid by a state tribunal authorized to make such determination, or called into question by a federal court’s issuance of a writ of habeas corpus, 28 U.S.C. § 2254, A claim for damages bearing that relationship to a conviction or sentence that has not been so invalidated is not cognizable under § 1983. Id., at 486-487 [114 S.Ct. 2364] (footnote omitted).”
We rested this conclusion upon “the hoary principle that civil tort actions are not appropriate vehicles for' challenging the validity of outstanding criminal judgments.” Id., at 486, 114 S.Ct. 2364. “ ‘Congress,’ ” we said, “ ‘has determined that habeas corpus is the1 appropriate remedy for state prisoners attacking the validity of the fact, or length of their confinement, and that specific determination must override the general terms of § 1983.’ ” Id., at 482, 114 S.Ct. 2364 (quoting Preiser v. Rodriguez, 411 U.S. 475, 490, 93 S.Ct. 1827, 36 L.Ed.2d 439 (1973)).
Nothing in Heck, Edwards, or any of the Court’s later decisions suggests that the “favorable termination” element that the *1030Court thought essential can be elided by a plaintiffs disavowing a kind of relief that Preiser holds is never available under § 1983 in the first place. The approach taken in Peralta is incompatible with Heck and its successors; Peralta is functionally what would happen if the whole sequence were overruled and only Preiser left standing.
Peralta is incompatible not only with the Supreme Court’s decisions but also with McCurdy v. Sheriff of Madison County, 128 F.3d 1144 (7th Cir. 1997), which held that a plaintiff cannot sidestep Heck by conceding a conviction’s validity. Our decision in Burd v. Sessler, 702 F.3d 429, 435-36 (7th Cir. 2012), which holds that a prisoner cannot avoid Heck by waiting until the sentence expires and it is too late to file a collateral attack, also is irreconcilable with the Second Circuit’s view that a § 1983 suit for damages is permissible whenever it cannot end in a decision that changes the length of a person’s confinement. We decline to follow Peralta, which did not mention McCurdy and therefore created a conflict among the circuits, perhaps unintentionally. We shall stick with the established law of this circuit.
Haywood’s Eighth Amendment claim is unaffected by Heck. He contends that the cell in which he was held during his 60-day term of segregation had a broken window and that, when the prison’s power failed during a storm in January 2010, the heat went off and the • temperature fell below freezing. Haywood maintains that the guards refused to repair the window or provide adequate clothing and blankets. Instead, he asserts, the guards made conditions worse by turning on the ventilation system (which he calls “the blowers”). Wind aggravates the effect of cold by increasing the speed at which heat is removed from exposed skin.
According to Haywood, power and heat were off for four days, and when power was restored the cell remained frigid and the guards continued to ignore his request to fix the window or provide blankets, a coat, or any other means of warmth. If circumstances were as Haywood asserts, then the prison violated his constitutional rights. Dixon v. Godinez, 114 F.3d 640, 642 (7th Cir. 1997); Henderson v. DeRobertis, 940 F.2d 1055, 1059 (7th Cir. 1991). See also Petties v. Carter, 836 F.3d 722 (7th Cir. 2016) (en banc) (discussing standards of liability under' the Eighth Amendment in medical-care situations). There may be reasons to doubt Haywood’s account—if the cell was as cold and his clothing as skimpy as he relates, he would have suffered frostbite or death, yet he is alive and whole—but on motion for summary judgment we must accept the declarations in his affidavit.
. The district court granted summary judgment not because it discounted Haywood’s evidence or thought the conditions acceptable, but because of the identity of the sole defendant: the warden. Haywood did not sue (or, if he did sue, did not serve) the guards and other persons responsible for climate control. He sued only the top of the organization, and the district court concluded that the warden cannot be personally liable under the Supreme Court’s decision in Ashcroft v. Iqbal, 556 U.S. 662, 677, 129 S.Ct. 1937, 173. L.Ed.2d 868 (2009), that organizational heads and other supervisors are not vicariously liable for their subordinates’ misdeeds. They are liable for their own acts but not derivatively liable for other persons’ acts.
Farmer v. Brennan, 511 U.S. 825, 114 S.Ct. 1970, 128 L.Ed.2d 811 (1994), supplies the substantive rule of decision. There “the Supreme Court held that prison officials have a- duty to ‘ensure that inmates receive adequate food, clothing, *1031shelter, and medical care.’ ” Estate of Miller ex rel. Bertram v. Tobiasz, 680 F.3d 984, 989 (7th Cir. 2012) (quoting Farmer, 511 U.S. at 882, 114 S.Ct. 1970). To determine whether an inmate’s Eighth Amendment rights were violated by a deprivation, we examine the alleged violation both objectively and subjectively. First, the deprivation alleged must be objectively, sufficiently serious. Second, the mental state of the prison official must have been one of deliberate indifference to inmate health or safety. See Petties, 836 F.3d at 728. The first element is satisfied when the plaintiff shows that he was “incarcerated under conditions posing a substantial risk of serious harm.” Sanville v. McCaughtry, 266 F.3d 724, 733 (7th Cir. 2001). There is no question that the circumstances described by Haywood satisfy this element.
To meet the, second element, a plaintiff must show that “ ‘the official knows of and disregards an excessive risk to inmate health or safety; the official must both be aware of facts from which the inference could be drawn that a substantial risk of serious harm exists, and he must also draw the inference.’ ” Estate of Miller, 680 F.3d at 989 (quoting Sanville, 266 F.3d at 734. A plaintiff need not “prove that his complaints ...' were ‘literally ignored,’; rather, he must show only that defendants’ responses to it were so plainly inappropriate as to permit the inference that the defendants intentionally or recklessly disregarded his needs.” Hayes v. Snyder, 546 F.3d 516, 524 (7th Cir. 2008) (citation omitted) (quoting Sherrod v. Lingle, 223 F.3d 605, 611 (7th Cir. 2000))). Our en banc decision in Petties took this approach to medical-care claims, and ⅜ is equally applicable to related claims under the Cruel and Unusual Punishments Clause.
Haywood brought forth evidence in opposition to Warden Hathaway’s motion for summary judgment that Warden Hathaway knew both of the extreme cold in the segregation unit and the causes of that cold. Specifically, the warden knew of the ice storm that caused the prison to lose power, see R.87-4 (Warden Hathaway’s answers to • interrogatories) at 16; he was apprised that Haywood could not shut his window, see R.l at 19 (Emergency Grievance attached as exhibit to Complaint) (“There is lots of air coming in through the windows because the seals on the outside are broken.”); and he personally toured the" segregation unit at least once between January and March 2009, see R.87-4 at 22 (“Defendant did go to Segregation during this time frame [between January 9, 2009, and March 9, 2009].”).
The extent of the warden’s response to this information, however, was that he “enured [sic] that the generators were operating properly and had maintenance perform periodic temperature checks.” Id. at 23. Nothing in the record indicates how frequently Warden Hathaway had maintenance perform temperature checks, whether those were performed during or after the power outage, or, indeed, whether any were performed apart from the check of the unit on January 23—one of the warmest days of the winter. Moreover, the fact that the generators were operational would have little effect on the temperature of the unit if, as Haywood testified, the windows in the unit would not close. The warden’s “plainly inappropriate” responses to Hathaway’s grievance, to the extreme weather, and to the situation in the segregation unit allow the inference that he was deliberately indifferent to the extreme cold suffered by Haywood and the other prisoners. See Hayes, 546 F.3d at 524.
Our dissenting colleague reads Iqbal and Vance v. Rumsfeld, 701 F.3d 193 (7th Cir. 2012) (en banc), to support- a contrary result. We do not believe, however, that Iqbal or Vance alters the standards set forth *1032in Farmer v. Brennan, Indeed, Iqbal recognizes that “[t]he factors necessary to establish a Bivens violation will vary with the constitutional provision at issue.” 556 U.S. at 676, 129 S.Ct. 1937. In Iqbal, the Bivens claim alleged was “invidious discrimination” on the basis of race, religion, and national origin “in contravention of the First and Fifth Amendments.” Id, In such situations, the Court explained, “our decisions make clear that the plaintiff must plead and prove that the defendant acted with discriminatory purpose,” id, and “a supervisor’s mere knowledge of his subordinate’s discriminatory .purpose” is not sufficient, id. at 677, 129 S.Ct. 1937. Iqbal simply did not speak to standards of liability for Eighth Amendment violations, for Iqbal had not made a claim under that provision, and the Court certainly gave no indication of discontent with the settled law set forth in Farmer. Moreover, even if it had signaled an intent to depart from Farmer, the Supreme Court'has admonished us not to anticipate its future steps. See, e.g., Bosse v. Oklahoma, — U.S. —, 137 S.Ct. 1, 196 L.Ed.2d 1 (2016) (collecting authority).
This court’s decision in Vance is not without its ambiguities. But one thing is clear; it must be read to conform to Farmer, the governing authority. It cannot be read, as the dissent does, as altering the standards of Farmer. In Vance, the plaintiffs alleged “torture and cruel, inhuman, and degrading treatment, ,.. presented as Fifth Amendment substantive due process claims,” Vance v. Rumsfeld, 653 F.3d 591, 594 (7th Cir. 2011), vacated en banc, 701 F.3d 193, and sought damages from the former Secretary of Defense. The specific question béfore the court was “whether the federal judiciary should create a right of action for damages against soldiers (and others in the chain of command) who abusively interrogate or mistreat military prisoners, or fail' to prevent improper detention and interrogation.” Vance, 701 F.3d at 195. We answered this question in the negative. We further observed that “[e]ven if we were to create a common-law damages remedy against military personnel and'their civilian superiors, former Secretary Rumsfeld could not be held liable.” Id. at 203. We observed that
Farmer rejected a contention that wardens (or guards) can be liable just because they know that violence occurs in prisons and don’t do more to prevent it on an institution-wide basis. To get anywhere, Vance and Ertel would need to allege that Rumsfeld knew of a substantial risk to security contractors’ employees, and ignored that risk bécause he wanted plaintiffs (or similarly situated persons) to be harmed.
Id. at 204. This dicta overstates Farmer ⅛ holding. Farmer instructs that the deliberate indifference standard “is satisfied by something less than acts or omissions for the very purpose of causing harm or with knowledge that harm will result”:
We hold ... that a prison official cannot be found liable under the Eighth Amendment for denying an inmate humane conditions of confinement unless the official knows of and disregards an excessive risk to inmate health or safety; the official must both be aware of facts from which the inference could be drawn that a substantial risk of serious harm exists, and he must also draw the inference.
Farmer, 511 U.S. at 835, 837, 114 S.Ct. 1970.
In any event, the standard articulated in Vance is satisfied here. The evidence showed that Warden Hathaway had actual knowledge of the unusually harsh weather conditions, that he had been apprised of the specific problem with the physical condition of Haywood’s cell (i.e., the windows *1033would not shut), and that, during the time period of Haywood’s complaint, the warden toured the segregation unit himself. These facts establish- that Warden Hathaway’s response was not simply “plainly inappropriate,” but that Haywood’s complaints “literally [were] ignored” by the individual in the position to remedy them. Hayes, 546 F.3d at 524 (internal quotation marks omitted). .
In short, there simply is no evidence that,' in Iqbal, the Supreme Court overruled or limited Farmer. See Minneci v. Pollard, 565 U.S. 118, 132 S.Ct. 617, 625, 181 L.Ed.2d 606 (2012) (noting Farmer’s deliberate indifference standard). Vance, as well, has no direct application to this case. Vance concerned the possibility of holding the cabinet, secretary of a federal department responsible for the implementation of policy at the individual level—a far cry from holding the administrator of a single facility liable for known deficiencies that directly threatened the welfare of prisoners for whom he was responsible. See 730 ILCS 5/3-6-2 (“A chief administrative officer shall bé responsible for all persons assigned to the institution or facility.”). Vance did not alter—nor could it alter—the standards set forth in the Court’s Eighth Amendment caselaw. .Indeed, since Vance, we have continued to apply Farmer to allegations of unconstitutional conditions of confinement. See Townsend v. Cooper, 759 F.3d 678, 685, 689 (7th Cir. 2014) (applying Farmer .to claims brought against the warden and other prison officials who were involved in the decision to impose a behavior action plan that resulted in unconstitutional .conditions of confinement).
Consistent With our approach in Townsend, other courts of appeals have determined that, post-Iqbal, Farmer’s deliberate indifference standard continues to govern claims of unconstitutional conditions of confinement brought against supervisory prison officials. See Barkes v. First Correctional Medical, Inc., 766 F.3d 307, 316-20 (3d Cir. 2014) (holding that deliberate indifference standard “for imposing supervisory liability based on an Eighth Amendment violation is consistent with Iqbal” and collecting cases), reversed on other grounds under the name Taylor v. Barkes, — U.S. —, 135 S.Ct. 2042, 192 L.Ed.2d 78 (2015) (holding that defendants were entitled to official immunity and not addressing the merits); see also Colwell v. Bannister, 763 F.3d 1060 (9th Cir. 2014) (applying Farmer’s deliberate indifference standard to evaluate liability of prison official post-Iqbal).
The judgment is affirmed with respect to the First Amendment theory and reversed with respect to the Eighth Amendment theory. The case is remanded for proceedings consistent with this opinion.