Quick answer: start with the door you use most. Add a door sweep to close the gap at the bottom and EPDM rubber foam tape or V-seal strip around the frame. Then put foam sealers behind the outlet and switch plates on outside walls. For a door you can’t drill, a slide-under draft stop works without tools. If your household income qualifies, Ohio’s free weatherization program may do this work for you.
Heating is the main energy cost these products go after. In the U.S. Energy Information Administration’s 2020 survey, about 64% of Ohio homes heated mainly with natural gas and 23% with electricity [1]. The Department of Energy says air leaks make a home drafty and put unnecessary strain on heating and cooling equipment, raising energy bills [2]. ENERGY STAR estimates that sealing air leaks and adding insulation saves an average of about 15% on heating and cooling costs in a typical home [3].
Why it matters in Ohio
- Ohio homes heating mainly with natural gas
- About 64% (2020) [1]
- Ohio homes heating mainly with electricity
- About 23% (2020) [1]
- Typical savings from sealing and insulating
- About 15% of heating and cooling costs (ENERGY STAR estimate) [3]
- Free weatherization (HWAP) income limit
- At or below 200% of federal guidelines [4]
Ohio’s free weatherization program
Before you buy anything, check whether you qualify for Ohio’s Home Weatherization Assistance Program (HWAP). It’s federally funded and run by the Ohio Department of Job and Family Services, and it provides free health and safety testing, heating system repairs, air sealing and insulation [4]. Households at or below 200% of the federal income guidelines qualify, and anyone who received HEAP, PIPP Plus, SSI or TANF in the past 12 months is automatically eligible. Renters need their landlord’s approval. You can show interest when you apply for HEAP at energyhelp.ohio.gov or through your local community action agency [4].
How we chose
- The right product for each leak. DOE says weatherstripping is for parts that move, like doors and operable windows, and caulk is for gaps between parts that don’t [2]. We picked products for the moving parts and for outlets on outside walls.
- DOE’s list of materials. DOE’s air sealing guide names tension seal (V-strip), felt, reinforced foam, rubber tape and door sweeps among weatherstripping options [2]. Our picks cover several of those.
- Specs from the maker. Sizes, materials and guarantees come from Frost King’s own product pages. All five picks are Frost King products because its pages list sizes and model numbers for each item.
- Recall check. We searched the CPSC recall database on November 2, 2026, for Frost King and its maker, Thermwell [10].
Our picks
Best for: The gap under an exterior door
Frost King Premium Aluminum and Reinforced Rubber Door Sweep (A79/36A)
A screw-on sweep closes the gap at the bottom of the door, one of the most obvious leaks. Frost King guarantees the rubber's seal for life.
- 2 x 36 in. [5]
- Silver A79/36A; also white (A79WHA), gold (A79GA) and satin nickel (A79SN) [5]
- Lifetime guarantee on weathersealing [5]
Safety check: No safety certification applies. CPSC recall search found no Frost King or Thermwell recall (checked 2026-11-02).
Watch out: Plan on drilling; Frost King's door sweep FAQ calls for 1/8 inch drill bits [5]. Doors narrower than 36 inches need it cut to length.
See it on Amazon → We chose it from specs and safety records; we haven't tested it ourselves.
Best for: Sealing door and window frames in deep cold
Frost King Premium EPDM Rubber Foam Weatherseal, D-Section (V25WA)
Self-stick EPDM rubber that Frost King says won't harden, crack or freeze even at 40 below zero, and springs back after long cold spells.
- 5/16 in. wide, 1/4 in. thick, 17 ft long; fits medium gaps [6]
- Also in grey (V25GA), brown (V25BA) and black (V25BK) [6]
- Narrow-gap (V23WA, 1/8 in.) and wide-gap (V27WA, 5/16 in.) versions [6]
Safety check: No safety certification applies. CPSC recall search found no Frost King or Thermwell recall (checked 2026-11-02).
Watch out: Pick the thickness for your gap. Tape that's too thick can keep a door from latching.
See it on Amazon → We chose it from specs and safety records; we haven't tested it ourselves.
Best for: Sides of doors and double-hung window channels
Frost King V-Seal Weatherstrip (M13WH)
A V-shaped strip with a built-in hinge that compresses to fill gaps, a type DOE lists as tension seal weatherstripping [2]. The adhesive bonds even in sub-freezing temperatures.
- 7/8 in. x 17 ft [7]
- White (M13WH) or brown (M13BH) [7]
- Quick-bonding adhesive works in sub-freezing temperatures, per Frost King [7]
Safety check: No safety certification applies. CPSC recall search found no Frost King or Thermwell recall (checked 2026-11-02).
Watch out: Frost King's page doesn't list a guarantee or gap range for this product. It works best where the door or sash slides or closes against it.
See it on Amazon → We chose it from specs and safety records; we haven't tested it ourselves.
Best for: Outlets and switches on outside walls
Frost King Foam Outlet and Switch Sealers, 10-Pack (OS12H)
These foam gaskets fit behind the cover plate to block drafts that come through outlet and switch boxes. Frost King says they're made of UL listed fire retardant plastic.
- 10-pack: 7 outlet and 3 switch sealers [8]
- Each 2-1/2 x 4 in. [8]
- Fit behind the face plate; not visible once installed [8]
Safety check: Frost King says they're made of U.L. listed fire retardant plastic [8]. CPSC recall search found no Frost King or Thermwell recall (checked 2026-11-02).
Watch out: Turn off power at the breaker before removing cover plates. They do the most good on outside walls.
See it on Amazon → We chose it from specs and safety records; we haven't tested it ourselves.
Best for: Renters and doors you can't drill
Frost King Double Draft Stop (DDS1)
It slides under a door and blocks drafts on both sides at once, with no tools or adhesive. It also works on a window you close onto it.
- 1-1/4 in. x up to 36 in. wide [9]
- Foam tubes inside can be cut to size [9]
- Loose ends fold over for narrower doors [9]
Safety check: No safety certification applies. CPSC recall search found no Frost King or Thermwell recall (checked 2026-11-02).
Watch out: It doesn't seal the sides or top of the door, and it can drag on thick carpet.
See it on Amazon → We chose it from specs and safety records; we haven't tested it ourselves.
Buying guide
- Find the leaks first. On a cold, windy day, feel around door and window frames and outlets on outside walls. DOE says a do-it-yourself approach works for obvious leaks like these, but small hidden leaks, especially in attics, take a professional energy assessment [2].
- Measure the gap. Weatherstrip comes in thicknesses for narrow, medium and wide gaps [6]. Close the door on a strip of paper; if it slides out easily, the seal needs work.
- Clean before you stick. Self-stick tapes need a clean, dry surface. Frost King’s guidance mentions cleaning the sill or jamb before installing [6].
- Recheck each fall. Foam and rubber wear out; replace any strip that has flattened or come loose.
Sources
- U.S. Energy Information Administration: Highlights for space heating fuel in U.S. homes by state, 2020 (RECS)
- U.S. Department of Energy: Consumer Guide to Air Sealing the Home
- ENERGY STAR: Methodology for Estimated Energy Savings (Seal and Insulate)
- Office of the Ohio Consumers' Counsel: Home Weatherization Assistance Program fact sheet
- Frost King: Premium Aluminum and Reinforced Rubber Door Sweep
- Frost King: Premium Rubber Foam (EPDM) Weatherseal
- Frost King: V-Seal Weatherstrip
- Frost King: Foam Outlet and Switch Sealers
- Frost King: Door or Window Double Draft Stop
- U.S. Consumer Product Safety Commission: Recalls database (searched Nov. 2, 2026)
Common questions
What's the difference between caulk and weatherstripping?
The U.S. Department of Energy says caulk is for cracks and gaps between parts of the house that don't move, like around door and window frames. Weatherstripping is for parts that move, such as doors and windows that open.
Can I get free weatherization help in Ohio?
Ohio's Home Weatherization Assistance Program provides free air sealing, insulation, heating system repairs and safety testing for households at or below 200% of the federal income guidelines. People who got HEAP, PIPP Plus, SSI or TANF in the past 12 months qualify automatically. Renters need landlord approval.
How much can sealing air leaks save?
ENERGY STAR estimates that sealing air leaks and adding insulation can save an average of about 15% on heating and cooling costs, based on modeling of typical U.S. homes. Results vary by house.