Under DOE's rules, a household at or below 200% of the federal poverty guidelines qualifies for weatherization services. In California, CSD's 2026 LIHEAP limit for a household of four is $6,407.16 a month.
So two sets of numbers matter: the federal rule and the state table your local provider uses. Here's what DOE's and CSD's pages showed on October 8, 2026.
What Are the Federal Income Guidelines for Weatherization?
DOE says households at or below 200% of the poverty income guidelines, or receiving Supplemental Security Income, are eligible for weatherization services. Each state may instead use LIHEAP's criterion of 60% of state median income. Both homeowners and renters can apply.
DOE's page adds that priority goes to the elderly, families with a member who has a disability, families with children, high-energy users and households with a high energy burden. So meeting the income limit doesn't guarantee immediate service when funding is tight.
What Are California's 2026 Income Limits?
CSD's 2026 LIHEAP income table runs from $3,331.66 a month for a one-person household to $9,226.25 for ten people, plus $192.21 for each additional person. CSD says LIHEAP can also provide in-home weatherization for energy efficiency and health and safety.
| Persons in household | 2026 monthly income limit (CSD) |
|---|---|
| 1 | $3,331.66 |
| 2 | $4,356.83 |
| 3 | $5,382.00 |
| 4 | $6,407.16 |
| 5 | $7,432.25 |
| 6 | $8,457.41 |
| 7 | $8,649.66 |
| 8 | $8,841.83 |
| 9 | $9,034.08 |
| 10 | $9,226.25 |
CSD says eligibility can also depend on household size, where you live and other factors. And because federal LIHEAP funding is limited, local providers prioritize the most vulnerable households, so some eligible households may not receive a benefit.
How Do I Apply for Weatherization in California?
Contact your local weatherization provider. DOE says to find your state's administrator and its list of local providers, then apply with proof of the prior year's income, such as pay stubs or Social Security payments. In California, CSD's page has a search by city or ZIP code for local providers.
DOE's steps:
- Check your eligibility against the income guidelines.
- Find your local weatherization provider through your state's website.
- Contact the provider and complete its application, with proof of income.
What Does Weatherization Save?
DOE says households save on average $372 or more every year after weatherization, according to a national evaluation. The program provides weatherization to about 32,000 homes a year with DOE funds and has served more than 7.2 million families since 1976.
So the benefit is lower bills over time, not a check. California also runs other no-cost programs: CSD's Low-Income Weatherization Program provides solar and efficiency upgrades at no cost to low-income households, and utilities run Energy Savings Assistance. The free HVAC replacement guide covers ESA.
How Do Weatherization Limits Compare With Utility Programs?
They use different measures. CSD's LIHEAP table is monthly income, while SCE's Energy Savings Assistance uses annual income at 250% of federal poverty guidelines: $82,500 a year for a household of four from June 1, 2026 to May 31, 2027.
So a household that doesn't qualify for one program may still qualify for another. The free rebate calculator shows the verified programs for your address.
Official Sources
The federal rules and figures come from DOE's own WAP pages, and the California income limits from CSD's LIHEAP page, all checked on October 8, 2026.
- DOE: How to Apply for Weatherization Assistance, the 200% rule, SSI and the steps to apply
- CSD: LIHEAP energy bill and weatherization help, California's 2026 income limits and provider search
- DOE: Weatherization Assistance Program, average savings and program reach
Frequently Asked Questions
What is the income limit for weatherization assistance for a family of four?
Under DOE's federal rule, it's 200% of the poverty income guidelines. In California, CSD's 2026 LIHEAP table, which also covers in-home weatherization, sets $6,407.16 a month for a household of four. Your local provider confirms which limit applies.
Can renters get weatherization assistance?
Yes. DOE's How to Apply page says both homeowners and renters are eligible to apply for weatherization services, at or below 200% of the poverty guidelines or with SSI, and your local provider explains its own steps.
Is weatherization assistance free?
DOE describes weatherization as services that reduce energy costs for low-income households, delivered through local providers, rather than a rebate you claim. DOE says weatherized households save on average $372 or more a year. Ask your local provider about any costs before work begins.
Checking what you qualify for? See the verified programs for your address with the free rebate calculator.