What Weatherization Assistance Actually Covers
What weatherization assistance pays for
Weatherization assistance covers the cost of materials and labor to reduce heat loss and air leaks in your home. The program pays for insulation, air sealing, window and door repairs, and heating system improvements. It does not cover new appliances, cosmetic updates, or structural repairs unrelated to energy efficiency.
The Department of Energy runs weatherization through local agencies in every state. Each agency decides which improvements to prioritize based on your home's condition and your heating and cooling costs. A trained auditor inspects your home first, identifies where energy is escaping, and creates a work plan.
Common improvements include attic insulation, basement or crawlspace sealing, caulking and weatherstripping around windows and doors, duct sealing, and repairs to furnaces or heat pumps. Some programs also cover water heater insulation, pipe insulation, and ventilation fixes. The work is done at no cost to you — the program covers 100 percent of materials and labor.
Key Takeaways
- Weatherization covers insulation, air sealing, window and door repairs, and heating system work — but not new appliances, cosmetic fixes, or structural repairs.
- A local agency sends an auditor to inspect your home and decide which improvements will save the most energy before any work starts.
- The program pays for all materials and labor at no cost to you, though wait times vary by state and can be several months.
- Your home must meet income limits set by the Department of Energy, and you must own or rent with landlord permission.
Insulation and air sealing — the core of the program
Most weatherization work focuses on stopping air leaks and adding insulation where heat escapes. Auditors use thermal imaging cameras to find where warm air is leaving your home in winter or cool air is leaking out in summer. The work targets the biggest energy losses first.
Attic insulation is the most common improvement because heat rises and escapes through the roof. The program removes old or insufficient insulation and adds new material — usually fiberglass, cellulose, or mineral wool — to meet current standards. Basement and crawlspace walls are also insulated if they are unfinished.
Air sealing means caulking and weatherstripping cracks around windows, doors, electrical outlets, and where pipes enter the house. Auditors also seal gaps in the rim joist (where the foundation meets the house frame) and around ductwork. This work is less visible than insulation but often saves as much energy.
Heating and cooling system repairs
Weatherization covers repairs to your furnace, heat pump, or air conditioner if they are not working efficiently. A technician will clean the system, replace filters, adjust settings, and fix leaks. If the system is beyond repair, the program may replace it, though replacement is less common than repair and depends on your local agency's budget.
Duct sealing is included if your home has forced-air heating or cooling. Leaky ducts waste heated or cooled air before it reaches your rooms. Technicians seal seams and connections with mastic (a sealant) or metal tape, and may also insulate ducts in unheated spaces like attics or crawlspaces.
Water heater work includes insulating the tank and pipes to reduce heat loss, and repairing or replacing the thermostat if it is not holding temperature. Some programs also weatherstrip or caulk around the water heater closet to prevent drafts.
Window and door improvements
Weatherization covers repairs to existing windows and doors — caulking, weatherstripping, replacing broken seals, and fixing frames or sashes that do not close properly. If a window or door cannot be repaired, the program may replace it, though this depends on your local agency's priorities and budget.
Storm windows and doors are sometimes installed if they are more cost-effective than replacing the original windows. Exterior doors receive new weatherstripping, threshold seals, and caulking around the frame. Interior doors between heated and unheated spaces may also be sealed to prevent drafts.
What weatherization does not cover
The program does not pay for new kitchen appliances, bathroom fixtures, flooring, paint, or other cosmetic work. It also does not cover structural repairs like roof replacement, foundation work, or siding replacement — even if those repairs would improve energy efficiency.
Weatherization does not pay for new electrical wiring, plumbing upgrades, or additions to your home. It does not cover solar panels, heat pump water heaters, or other high-cost renewable energy systems, though some states run separate programs for those improvements.
If your home has health or safety problems — mold, asbestos, lead paint, pest infestation, or electrical hazards — the program may not proceed until those issues are fixed. You are responsible for addressing those problems, though some agencies can refer you to other programs that might help.
How the inspection and work plan happen
After you are found to meet income and other requirements, a local agency schedules an energy audit. An auditor visits your home, checks insulation levels, inspects the heating and cooling system, looks for air leaks, and reviews your utility bills. This visit usually takes one to three hours.
The auditor then creates a work plan listing which improvements will be done and in what order. The plan prioritizes work that will save the most energy per dollar spent. You receive a copy of the plan before work starts, and you can ask questions about why certain improvements are included or excluded.
Work typically begins within a few weeks to several months, depending on your local agency's queue. Most projects take one to three weeks to complete. The agency schedules the work and coordinates with contractors — you do not need to hire anyone yourself.
Income limits and other requirements
To be considered for weatherization, your household income must fall at or below 200 percent of the federal poverty line, though some states set the limit lower. The limit varies by household size and changes each year. Your local agency can tell you the current limit for your area.
You must own your home or have written permission from your landlord to allow the work. If you rent, the landlord does not have to pay anything — the program covers all costs — but they must agree in writing. Some landlords are reluctant, so the agency may help you explain the benefits.
Your home must be your primary residence. The program does not cover vacation homes, investment properties, or rental units you own. The house must also be in reasonably safe condition — if there are serious health or safety hazards, those must be addressed first.
Frequently Asked Questions
How long does weatherization take from start to finish?
The energy audit usually happens within a few weeks of your intake appointment. The work plan is created within one to two weeks after the audit. Actual weatherization work typically takes one to three weeks, depending on the scope. Total time from intake to completion is usually two to six months, though some areas have longer waits.
Can weatherization work be done if I rent?
Yes, but your landlord must give written permission. The program covers all costs — your landlord pays nothing. Some landlords are hesitant, so ask your local agency for a letter explaining the benefits. If your landlord refuses, you cannot proceed, as the work requires access to the building structure.
What if my home has mold or lead paint?
The program will not proceed until those hazards are addressed. You are responsible for fixing them, though some agencies can refer you to other programs that help with lead abatement or mold remediation. Once those issues are resolved, you can continue with weatherization.
Will weatherization lower my heating and cooling bills?
Most people see a reduction in energy costs, though the amount varies based on your home's condition, your climate, and how much work is done. Savings typically range from 10 to 30 percent of heating and cooling costs, but some homes see less improvement if they already have good insulation.
Can I choose which improvements are done?
The work plan is based on the auditor's assessment of where energy is being lost and what improvements will save the most energy. You can ask questions about the plan and discuss priorities with the agency, but the final decision rests with the local program based on their standards and budget.