Double hung and casement windows are the two operating styles central Ohio homeowners most often weigh against each other when replacement time arrives. Both come in vinyl, carry the same insulated glass and fit most existing openings. The real differences lie in how the sash moves, how tightly it seals, and how much escape space it gives a bedroom. Franklin County sits in climate zone 5A, a heating dominated zone with humid summers, so a window here has to handle January wind chills near zero and July afternoons in the upper 80s inside the same frame.
Homeowners in Columbus, Dublin and the surrounding towns who want both styles priced on the same page can call on Windows & Siding 4less, a central Ohio installer of vinyl replacement windows and siding. Every quote arrives as an itemized spreadsheet, so a casement bedroom and a double hung kitchen can be compared dollar for dollar. The company even pays $300 if it cannot meet or beat a competitor’s price on the same product. Book the free 30 minute consultation to learn the cost and timeline, with no pressure to sign on the spot.
How Each Sash Actually Moves
A double hung window has two sashes that slide vertically, so you can raise the bottom or lower the top. A casement has a single sash hinged on one side that swings outward when you turn a crank. Where a double hung stays inside the wall, a casement reaches into the yard, which matters beside a deck or walkway.
That outward swing changes ventilation too. A double hung can only open half its area at once, while a casement opens nearly all of it, and the angled sash steers passing breezes indoors. On a still summer night, though, the double hung can pull ahead, because opening the top and bottom together lets warm air escape high while cooler air slips in low.
Wind, Air Leakage and Ohio Winters
Casements usually post lower air leakage ratings because the sash closes by pressing into compression weatherstripping, and wind only squeezes it tighter. A double hung depends on sliding seals at the meeting rail and along the jambs, which wear with use. In a zone 5A January, that shows up as a faint draft along the middle of an older double hung while a well adjusted casement feels solid.
Glass performance is a separate question and applies to both styles equally. The ENERGY STAR criteria for residential windows set U factor limits by climate zone, and the Version 7 rules in force since October 2023 tightened the Northern zone, the coldest of the four, to a U factor of 0.22 or lower. Reaching those numbers usually means double pane glass with low emissivity coatings and argon, or triple pane. Current trends lean toward triple pane on north and west walls, slimmer frames and darker exterior colors in either style.
The Bedroom Opening Rule
Every sleeping room needs an emergency escape opening. The Residential Code of Ohio follows the model code here: at least 5.7 square feet of net clear opening (5.0 on a ground floor), at least 24 inches of clear height, at least 20 inches of clear width, and a sill no more than 44 inches above the floor. A 30 by 54 inch double hung opens to roughly 4.3 square feet because only one sash moves, which falls short. A casement in the same frame can clear well over 7 square feet, as long as the operator arm does not eat into the width.
Replacement windows get some relief. The code allows a replacement in an existing bedroom opening to be the largest standard size that fits, in the same operating style or one with equal or greater opening area. That makes switching a cramped bedroom double hung to a casement one of the few ways to gain escape space without cutting into brick or siding. On upper floors, where a sill sits less than 24 inches above the floor and more than 72 inches above the ground outside, operable windows need opening limiters or similar fall protection.
Screens, Cleaning and Window Air Conditioners
A double hung wears its screen on the outside, while a casement keeps its screen indoors, where it stays cleaner but sits between you and the glass. A double hung tilts in so both faces can be washed from inside, whereas a casement uses hinges that leave a gap wide enough to reach the outer pane. Over a kitchen sink, turning a crank beats leaning across the faucet to lift a sash. Yet older homes and rentals that still rely on a window air conditioner need a vertically sliding sash, so at least one double hung usually stays.
The Two Styles at a Glance
| What you are weighing | Double hung | Casement |
|---|---|---|
| Share of the frame that opens | About half | Nearly all |
| Typical air leakage | Higher, from sliding seals | Lower, from compression seals |
| Fit for egress in a tight opening | Often falls short | Usually passes |
| Where the screen sits | Outside | Inside |
| Works with a window AC unit | Yes | No |
| Clearance needed outside | None | Room for the sash to swing |
| Parts that wear | Sash balances and seals | Crank operator and hinges |
Permits and Historic Streets in Columbus
Columbus Building and Zoning Services handles this work through a combined roof, siding, window and door application. The City of Columbus roof, siding, window and door permit application asks whether replacement windows match the existing size, type and materials apart from an improved U factor, so swapping double hungs for casements is a change the city expects to hear about. The same form checks whether a Certificate of Appropriateness is required, which comes into play in historic districts such as German Village and Victorian Village, where commissions review visible changes to window style. Suburbs such as Dublin and Westerville run their own building departments.
Choosing Room by Room
Street facing rooms on a colonial or a traditional brick home often keep double hungs to match the architecture. Bedrooms with small openings tend to gain the most from casements, since the escape opening improves without enlarging the wall. Kitchens over sinks and counters favor the crank, and windward walls that catch winter gusts benefit from the tighter seal. Rooms that still cool with a window unit stay double hung until central air arrives. Mixing styles across one house is normal, and a consistent exterior color and frame profile keeps the house reading as one design.