If you source treadmills from China to sell overseas, “motor power” is almost always the most prominently displayed number in the marketing materials — but this number carries two entirely different meanings: one is the “peak horsepower” the motor can hit for an instant, the other is the “continuous horsepower” it can sustain over a real workout. The gap between them directly determines whether the machine will hold up after a few months of use. Industry data shows that on treadmills used more than 4 hours per week, nearly 68% of warranty claims trace back to motor failures — this isn’t a cosmetic spec, it’s the core factor determining whether the product actually lasts.
1. Peak horsepower and continuous horsepower are two completely different numbers
Peak horsepower (HP) is the maximum output a motor can produce for a very brief moment (usually seconds), under ideal lab conditions — this number has almost no bearing on real-world use. Continuous horsepower (CHP) is what the motor can actually sustain over time without overheating or throttling — the number that genuinely matters.
A real example shows how large this gap can be: a treadmill rated “5.0 HP peak” can drop to just 2.2 CHP after only five minutes of incline running — the same machine, two numbers differing by more than double.
2. A basic sanity check: entry-level home treadmills should have a real rated output of roughly 1-1.5 HP
For an entry-level home treadmill (roughly a 40cm belt width), the motor’s rated power — its genuine continuous output — normally falls in the 1-1.5 HP range (1 HP ≈ 735 watts). Any entry-level home unit claiming 3.0 HP or 4.0 HP is almost certainly citing peak power, not rated/continuous power. This range is a useful first sanity check against a supplier’s claims.
3. Genuinely reliable brands proactively label “rated power” separately, not just a peak number
Proper practice is to list both “peak power” and “rated power” separately on the spec sheet. If a supplier only gives you a single, vague horsepower figure — without distinguishing peak from continuous, and without a third-party test report — you can reasonably assume the real CHP is below 2.5, unsuitable for users over 180 lbs or workouts exceeding 30 minutes.
4. A specific, checkable fraud pattern: winding material — copper versus aluminum makes a real difference
This is a genuinely specific case documented in Chinese industry sources: a batch of treadmills labeled “4.5 HP continuous power” developed collective speed-fluctuation problems within three months of delivery. A teardown revealed the motor actually used aluminum winding wire, not the claimed copper winding. Aluminum winding costs roughly 30% less than copper, but has worse heat tolerance — under sustained heavy load, its resistance rises sharply, causing power output to drop more than 40%, and it’s more prone to aging and short-circuiting over the long term.
How to verify: ask the supplier directly whether the motor winding is copper or aluminum — copper is the more reliable quality signal. A further verification step: request the power-decay curve for 8 hours of continuous operation at 25°C ambient temperature — a genuinely well-built continuous-duty motor should keep power decay under 5% after several hours of continuous running; decay exceeding 30%, or the unit triggering an overheat shutdown, indicates a problem in the motor’s design or materials.
5. A bonus, self-testable tip: verifying top speed claims
This isn’t about motor horsepower specifically, but it’s the same category of spec inflation, and you can verify it yourself: measure the full length of the belt (including the section around the rollers), set the treadmill to a moderate speed (say, 8 km/h), count how many revolutions the belt completes over a timed interval, then calculate real speed as revolutions × belt length ÷ time, and compare it to the claimed maximum speed. A documented real case: a domestic entry-level treadmill claimed a 14 km/h top speed, but tested at only 12 km/h.
6. Real CHP requirements by usage intensity
- Primarily walking: 1.5-2.0 CHP is sufficient
- Jogging: around 2.5 CHP
- Running / high-intensity training: 3.0 CHP or higher; heavier users or interval training benefit from 3.5 CHP+
The bottom line
A treadmill’s “horsepower” spec hides two very different numbers — peak and continuous — and industry data shows motor-related issues account for roughly two-thirds of warranty claims. The concrete verification steps: require the supplier to state both peak and rated (continuous) power separately, sanity-check entry-level claims against the reasonable 1-1.5 HP range, ask directly whether the motor winding is copper or aluminum, request a power-decay curve over 8 hours at 25°C, and verify top speed yourself by counting belt revolutions. These steps are far more reliable than taking the horsepower number on the marketing page at face value.
Motor specification standards and degradation benchmarks reflect general fitness-equipment industry practice as documented in trade and consumer sources as of 2026. Verify specific product claims and test data before making sourcing decisions. General guidance, not legal advice.