The statute names four permitted uses at 42 U.S.C. 8624(b)(1), and reading them is the fastest way to see what the program is for. A state must certify that it will use the funds to conduct outreach and help low-income households meet home energy costs, to "intervene in energy crisis situations", to provide "low-cost residential weatherization and other cost-effective energy-related home repair", and to administer the program. Cooling is squarely inside the first use, so LIHEAP is not only a winter program, and the crisis component is a separate, faster track from ordinary seasonal assistance.
Eligibility runs on two independent routes at 8624(b)(2). The categorical route at subparagraph (A) makes a household eligible if a member receives TANF, Supplemental Security Income, SNAP benefits, or certain veterans' pension and compensation payments under Title 38. The income route at subparagraph (B) reaches households whose income does not exceed the greater of 150 percent of the poverty level for the state or 60 percent of the state median income. A floor then constrains the state from the other direction. The same paragraph provides that a state "may not exclude a household from eligibility in a fiscal year solely on the basis of household income if such income is less than 110 percent of the poverty level for such State", though the state may give priority to households with the highest energy costs or burdens relative to income.
Because the 60 percent test uses a state median income published for a household of four, the regulation has to say how to scale it. Section 96.85(b) of Title 45 sets the adjustment percentages explicitly. A one-person household is 52 percent of the four-person median, two people 68 percent, three 84 percent, four 100 percent, five 116 percent, six 132 percent, and three further percentage points for each additional person above six. Section 96.85(a) requires grantees to update their criteria to the most recent poverty guidelines or median income estimates by October 1 or the start of the state fiscal year, whichever is later.
Two design features govern how much a household actually receives. Section 8624(b)(5) requires that "the highest level of assistance will be furnished to those households which have the lowest incomes and the highest energy costs or needs in relation to income, taking into account family size", and it forbids the state from treating categorically eligible households differently from income-eligible ones. And section 8624(k) caps the share of the grant that may go to weatherization and energy-related home repair at 15 percent, rising to 25 percent if the Secretary grants the state a waiver.
The funding structure is the fact that determines whether a household actually gets help. Section 8621(b) is headed "Authorization of appropriations", and its text authorizes $2,000,000,000 for each of fiscal years 1995 through 1999, such sums as may be necessary for fiscal years 2000 and 2001, and $5,100,000,000 for each of fiscal years 2005 through 2007. Nothing later appears in the subsection. Funding since then has come through the annual appropriations process rather than a standing authorization, and the program has kept running on it: the Administration for Children and Families was still making direct LIHEAP awards to states, territories and tribes for fiscal year 2026. The practical consequence for a household is that the money is finite and seasonal. A state may close its application window once the allotment is committed, so eligibility and payment are two different things.
One further point is worth stating precisely, because it is the commonest misunderstanding. Nothing in section 8624 prohibits a utility from disconnecting a customer, and the statute contains no shutoff moratorium. LIHEAP funds a payment toward the bill. Protection against disconnection comes from state utility law and the rules of the state public utility commission, which vary and often depend on the season, the household's medical status, or a payment arrangement. A household facing a shutoff generally needs both, and LIHEAP's crisis component exists to get money moving quickly enough to matter.