Installing a new appliance in a NYC apartment is rarely as simple as unboxing, connecting, and done. Building requirements, old plumbing, narrow doorways, and electrical limitations turn what should be an afternoon into a multi-step project. Here's how to avoid the most common pitfalls.
Before You Buy: Measure Everything
The Doorway Problem NYC apartment doorways are narrow — typically 28–32 inches for interior doors and 30–34 inches for entry doors. Standard full-size appliances measure: - Refrigerator: 28–36 inches wide, typically 29–30 inches deep (handle adds 2–3 inches) - Washing machine: 27 inches wide - Dishwasher: 24 inches wide (standard), 18 inches (compact) - Dryer: 27 inches wide
Before purchasing any appliance, measure: 1. The appliance width AND depth with handles 2. Every doorway the appliance must pass through 3. Any stairway turns or landings if you're in a walkup 4. The installation space with clearance requirements
For refrigerators, the most common NYC installation mistake is buying a counter-depth model that fits the kitchen but won't fit through the apartment door without removing both the door hinges and the refrigerator doors themselves.
The Electrical Requirement Before buying an electric dryer or electric range, verify: - Is there a 240V outlet in the installation location? - Is the circuit breaker a double-pole 30-amp (dryer) or 50-amp (range)? - Pre-war buildings often have neither — adding one requires an electrician and co-op or building approval
Washing Machine Installation: The NYC-Specific Issues
Hot and cold supply valves: Most NYC apartments with washer hookups have shutoff valves for hot and cold water. Check that both valves turn on and off freely and don't leak at the packing nut. Valves that haven't been operated in years often drip when finally closed — address this before the machine arrives.
Drain standpipe diameter: NYC code requires a 2-inch minimum standpipe for washing machines. Older Brooklyn buildings may have a 1.5-inch standpipe that was installed before modern code requirements. A high-efficiency front-load washer's drain pump at full capacity will overflow a 1.5-inch standpipe. This requires a plumber to address.
Water hammer: When a washing machine's solenoid valve closes quickly, it can create a 'water hammer' bang in the pipes. In NYC prewar buildings with long pipe runs and multiple units, this resonates through the building. Water hammer arrestors ($15–30, installed on the supply valves) eliminate this.
Dishwasher Installation: Building Compliance
Shut-off valve: NYC plumbing code requires a dedicated shut-off valve for the dishwasher supply line. Many older Brooklyn installations have the dishwasher teed off the kitchen cold water supply without a dedicated shutoff. If you're replacing a dishwasher, confirm there's a proper shutoff — a plumber can add one if needed ($100–200).
Junction box requirement: The dishwasher's electrical connection must terminate in a junction box under the sink or in the cabinet wall, not with a bare wire connection. Some older NYC installations have improper electrical connections that need to be brought to code before the new appliance is installed.
Co-op board notification: Some co-op buildings require written notification before dishwasher installation, particularly in buildings that previously prohibited in-unit dishwashers (common in older Brooklyn co-ops). Check with your building management before installation day.
Refrigerator Installation: The Water Line
If your new refrigerator has a water dispenser or ice maker, it needs a water supply line connection at the back. In NYC apartments:
Copper vs. plastic tubing: Copper tubing is more reliable than plastic for the refrigerator water line — plastic is more prone to kinking and cracking. If an installer offers plastic, upgrade to copper or braided stainless.
Ice maker water line in old buildings: In pre-war Brooklyn buildings, running a new water line to the refrigerator location may require going through the cabinet wall or floor. This is a plumbing job — not an appliance installation job — and some buildings require super approval before any penetration of walls or floors.