The short answer
Good treadmill neighbor relations rest on four things: talk to the downstairs neighbor before the machine arrives, train during daytime hours your lease defines, control the noise at the source with a dense mat and regular maintenance, and have a plan for the day someone knocks. None of this guarantees zero complaints. What it does is make complaints less likely, shorter, and easier to resolve, while protecting you if the building gets involved.
Talk before you buy, not after the first complaint
Two independent user discussions converge on the same sequence: talk to the downstairs neighbor first, then set your habits. In practice that means introducing yourself, exchanging phone numbers, asking about their schedule (night shifts, babies, work-from-home calls), and agreeing on training times together. A face-to-face conversation beats a note every time; multiple guides warn that written notes read as passive-aggressive. Ask the leasing office the same round of questions, because some complexes ban workout equipment on upper floors outright, and learning that after delivery is expensive.
What to say is simple and specific: what the machine is, when you plan to use it, what you have done to keep it quiet (mat, placement, maintenance), and your phone number with an invitation to text if it ever bothers them. People tolerate far more from a neighbor who asked first.
Know your building's real quiet hours
Typical quiet hours run 10 pm to 7 am on weekdays and 11 pm to 8 am on weekends and holidays, per a leasing industry guide. Those are typical values, not universal rules, and the same source stresses checking local noise ordinances and your own lease. Your building's actual hours are the only ones that matter. Repeated violations of the lease's quiet hours can start the eviction process, so this is not a courtesy detail; it is the legal frame your training schedule lives inside.
The practical rule every reliable source supports: train during the day, avoid early mornings and late nights, and leave margin around the edges of quiet hours rather than training right up to them.
What the neighbor actually hears
Mostly structure, not air. The downstairs neighbor hears the thud of every step transmitted through the floor, far more than the motor hum you hear standing next to the machine. One acoustic guide describes the upstairs treadmill experience from below as hearing the thud of every step. For scale, normal conversation measures about 60 dB near the speaker, with intensity falling off sharply with distance; that figure is a scale reference, not a treadmill measurement. The key insight for etiquette: because the path is structural, your neighbor cannot "get used to it" the way you get used to a hum. Every foot strike is a fresh event.
Reduce it at the source
Everything in the noise reduction playbook is also neighbor etiquette, because the quietest complaint is the one that never happens:
- A high-density rubber mat (1/4 to 1/2 inch) plus isolation feet under the machine's feet. Acoustic guides rate the dense foam mat the most recommended physical measure.
- Belt maintenance. The most common cause of treadmill noise is a dry belt, and BarBend's expert-reviewed maintenance guidance recommends silicone lubricant between belt and deck as preventive care roughly every two months, plus checking belt tension, centering, and loose machine feet. The brand-by-brand schedules are in the belt lubrication guide.
- Placement away from shared walls and never above the neighbor's bedroom. The upstairs checklist has the full protocol.
- Walk instead of run when the building is the constraint. The impact difference is the whole game.
The maintenance items are the etiquette items people forget. A belt that was quiet in January can be the reason for a March complaint if it dried out. Put lubrication on a calendar reminder, not on your memory.
If a complaint comes anyway
Do not argue the physics. The response that resolves complaints fastest, distilled from user experiences and guides:
- Listen fully before responding.
- Apologize for the disturbance without qualifying it.
- Ask what times bother them and adjust your schedule to their preference.
- Give them a direct text channel and invite them to use it.
- Tell them concretely what you changed (mat added, hours moved, maintenance done).
- If positions harden, bring in building management early rather than letting it become a feud.
What not to do: do not pretend you do not know what they are talking about, do not train in quiet hours to "get it over with," and do not treat the neighbor as the problem. The forum threads are full of upstairs-versus-downstairs disputes that hardened precisely because the first response was defensive.
Know the escalation chain
If complaints continue, buildings follow a documented path: a warning letter, then fines, then a cure-or-quit notice typically giving 10 to 30 days to resolve the problem, with possible eviction proceedings after that. One real user case describes a building requiring a treadmill's removal after multiple neighbor complaints. Knowing this chain is not legal advice; buildings and states differ in how they enforce each step. It is context for why early, friendly resolution is always cheaper than winning an argument.
Where the disagreement honestly lies
Community opinion genuinely splits on whether upstairs treadmill use is a reasonable part of apartment life or an imposition regardless of precautions. One camp calls it unreasonable at any hour; the other considers short, daytime, agreed-upon sessions (one discussion cited roughly 45 minutes) a normal part of shared living, with tolerance running both ways. This site does not adjudicate that split. What it does say: whatever your view, the checklist on this page is the version of upstairs treadmill use that gives consideration its best chance.
Never promise a neighbor "you won't hear a thing." No treadmill is silent in an apartment, and a promise you cannot keep converts the next thud into a betrayal. Promise daytime hours, a mat, and your phone number instead.