How to Choose a Washer and Dryer | Fit Before You Buy

For the full breakdown, see our best Commercial Washer and Dryer for Home Use guide.

Picking a washer and dryer comes down to more than drum size and color. The machine that looks perfect online can fail at the first turn into your laundry room. The practical way to choose a washer and dryer is to measure the path and space first, then match capacity, drying type, and energy use to your home’s hookups. Skip that order and you risk buying a pair you cannot install.

Measure Your Space Before You Shop

Most buyers check capacity before they check dimensions, and that order causes the most returns. Model dimensions vary even at the same advertised capacity, and trim, baseboards, and door frames eat into usable space. Measure the height, width, and depth of the installation area, then measure the path to get there—every doorway and turn the machines must pass through.

Leave clearance for plumbing, vents, cords, and door swing. Common retail guidance suggests about 1–3 inches on the sides and 4–6 inches at the back. Front-load doors need substantial swing room, while top-load lids need vertical clearance above the machine.

Match Capacity to Your Washer Loads

Size the dryer to the washer, not the other way around. A common rule of thumb is a dryer with roughly twice the washer’s capacity, because wet laundry fluffs up and needs room to tumble. If the dryer drum is too small, bulky items like comforters cannot tumble freely, and they come out damp and wrinkled.

Matching the pair by brand helps too. Manufacturers often design washer and dryer sets to work together, with controls, cycle lengths, and load sizes tuned to each other. If you replace only one machine, verify the remaining unit’s drum is large enough for a full load from the new washer.

Compare Energy Use and Efficiency Ratings

The yellow EnergyGuide label is your starting point for comparing operating costs. It estimates annual energy use and yearly cost for each model, letting you weigh a higher purchase price against lower utility bills over time.

Beyond the label, ENERGY STAR certification narrows the field to efficient models. For washers, look for a high Integrated Modified Energy Factor (IMEF) and a low Integrated Water Factor (IWF). For dryers, compare the Combined Energy Factor (CEF), which measures efficiency per unit of energy used.

Check Hookups: Vented, Ventless, Gas, or Electric

Your home’s hookups decide which dryer types are even possible. Check the electrical supply and fuel source before you fall for a specific model. Vented dryers need proper exhaust routing to the outside. Gas dryers require a gas connection and usually cost less to run. Ventless options—including heat-pump models—work where venting is impossible, and they tend to be more efficient but slower.

All-in-one washer-dryer combos appeal to small spaces, but they only qualify for ENERGY STAR certification when they use air-only drying, which is slower.

Front-load washers generally use less water and energy, while top-load models are simpler to use and finish cycles faster. If you cannot get a matching pair, prioritize the washer for efficiency and the dryer for capacity. Whatever you choose, compare the EnergyGuide labels of the final two or three candidates—the label exists precisely to expose long-term costs the sticker price hides.