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Feb 01, 2026 As an Amazon Associate I earn from qualifying purchases.

AirHot TM400

This ultra-thin (4.6 inches) portable treadmill features a quiet 2.5HP motor supporting up to 265 lbs, a 40"x16" turf-textured, non-slip running belt with a 14-point shock absorption system for knee protection, and a digital monitor with remote to track fitness data across speeds of 0.6-3.7MPH.

Warranty

Default coverage: 1 year·Provider: manufacturer·Notes: Manual promises one-year coverage on the whole machine from purchase.

The TM400 manual (PDF) states “warranty period for the whole machine is one year (starting from the date of purchase).”

Motor

Motor type: Brushed

The product page only touts a "2.5 HP motor" with no brushless claim, so the drive is treated as brushed.

Price

Airhot store listed $105.99 (compare-at $299.98) on 2025-04-18.

Stars

Amazon snapshot (ASIN B0C2KSZXSG) on 2026-02-07 shows 4.0 stars / 1,452 reviews.

Star Rating: 4.0/5 (1452 reviews)
Rating Distribution:
5★69%  4★13%  3★6%  2★3%  1★9%

Horsepower

Horsepower: 2.5 HP·CHP transparency: Peak HP

No continuous horsepower spec provided by Airhot; only peak HP is marketed.

Shock

10 shock absorbers + 4 rubber cushions (14-point system)

Decibels

Brand page claims "noise level below 45 decibels" - not lab-tested or independently verified.

Belt

Amazon tech details list Deck Width 17", but comparison table and marketing copy both say 16". Using the more conservative 16" figure.

Budget mills last about a year at heavy daily use. Follow the maintenance guide to stretch it.

Product Identity
Brushless motor
  • Amazon listing title: "2.5HP Low-Noise Desk Treadmill"
  • Brand page bullet: "2.5HP Powerful & Silent"
  • No mention of "brushless" anywhere in Amazon listing, brand page, or comparison table
  • Amazon "Input Power" field: "2.5 Horsepower" (no qualifier)
  • The motor is brushed; no evidence of brushless appears in any source.
  • Source: Amazon listing + brand product page
Continuous horsepower (CHP)
  • Amazon "Maximum Horsepower": 2.5 HP
  • Amazon comparison table: explicitly labeled "Peak HP Motor: 2.5 HP"
  • Amazon "Input Power": 2.5 Horsepower
  • No wattage, no amps, no continuous rating published anywhere
  • Brand page only says "2.5 horsepower motor" without qualifying continuous vs peak
  • Amazon explicitly using "Peak HP Motor" in the comparison table is strong evidence this is peak-only
  • The 2.5 HP figure is peak. No continuous rating is derivable - no electrical specs (watts or amps) are published.
  • Source: Amazon listing comparison table
Warranty: 12 months
  • Amazon "Warranty Description": "1" (i.e., 1 year)
  • Brand warranty page (https://airhot.com/pages/warranty): "Up to 1 year limited warranty... The warranty period for all coverage begins from the date of purchase and will remain in place for a period of 1 year."
  • The manual PDF (https://m.media-amazon.com/images/I/A1c1elPOj8L.pdf) confirms the same term.
  • Twelve months, manufacturer-provided, whole-machine coverage.
  • Source: Amazon tech details + brand warranty page + manual PDF
Rating
  • Amazon shows 4.0 stars / 1,452 reviews.
  • Star breakdown not captured (would need histogram widget click)
Price
  • Amazon: price not captured (likely still ~$110).
  • Brand site: $105.99 sale (compare-at $299.98) - sold out
Decibels
  • Brand page claims: "noise level below 45 decibels"
  • Not verified/lab-tested
Shock Absorption
  • Brand page: "10 shock absorbers and 4 rubber cushions" (total 14 points)
  • Amazon comparison table: "Shock Absorption Point: 14"
Running Surface (belt size)
  • Amazon: "Deck Length: 40 Inches", "Deck Width: 17 Inches"
  • Amazon comparison table: "Running Surface: 40''L x 16''W"
  • The tech details say 17" wide while the comparison table and marketing copy say 16".
Availability
  • Amazon: listing active (ASIN B0C2KSZXSG), appears available
  • Brand site: SOLD OUT (TM400-SILVER variant)
  • Date checked: 2026-02-07
Raw Amazon Tech Details
  • Brand: AIRHOT
  • Color: White
  • Product Dimensions: 45"D x 20"W x 4"H
  • Item Weight: 45 Pounds
  • Material: Alloy Steel
  • Maximum Speed: 3.7 MPH
  • Maximum Horsepower: 2.5 HP
  • Input Power: 2.5 Horsepower
  • Power Source: Corded Electric
  • Maximum Weight Recommendation: 120 Kilograms (265 lbs)
  • Deck Length: 40 Inches
  • Deck Width: 17 Inches
  • Frame Material: Alloy Steel
  • Folded Size: 20" x 25" x 4"
  • Minimum Speed: 0.6 MPH
  • Model Name: AH-TM400-8-WH-US
  • Warranty Description: 1
  • Part Number: AIRHOT
  • ASIN: B0C2KSZXSG
  • Date First Available: April 15, 2023
  • BSR: #75,682 Sports & Outdoors / #358 Treadmills
Additional specifications
  • Internal model number: AH-TM400-8-WH-US
  • Belt size: 40" x 16" (or 40" x 17" per tech details - discrepancy)
  • Motor watts: NOT FOUND
  • Motor amps: NOT FOUND
Sibling Models (from Amazon comparison table)
  • AIRHOT 15deg Incline Walking Pad (ASIN B0CZDNY22F) - 2.5HP, 0.6-6.2MPH, 40x16 belt
  • AIRHOT "Treadnill with incline" - 2.5HP, 0.6-7.6MPH, 39.4x15 belt
  • AIRHOT Large Walking Pad - 2.5HP, 0.6-3.8MPH, 41.3x16.5 belt
  • AIRHOT 2in1 Running Treadmill - 2.5HP, 0.6-7.6MPH, 41.3x16.5 belt
  • AIRHOT Walking Pad with Incline - 2.5HP, 0.6-4.0MPH, 35.5x15.7 belt
  • AIRHOT 3 in 1 with Stro... - 3.0HP, 0.6-7.6MPH, 42.5x17 belt
  • AIRHOT S700 3in1 Folding Treadmill - 3.0HP, 300lb capacity (from brand site)
What we could not confirm
  • No wattage or amperage data found on Amazon or brand page
  • No FCC ID found in Amazon tech details (Part Number is just "AIRHOT")
  • Brand site Specifications tab appears empty/non-functional
  • No manual PDF link found on brand site (only Amazon-hosted manual referenced in existing data)

Full specs

AirHot TM400
AirHot TM400
Check price
Price (US)$110.00
Motor2.5 HP peak
Motor typeBrushed
Auto incline15% (manual)
Belt (L x W)40" x 16"
Max user weight265 lb
Max speed3.7 mph
Noise45 dB
Height4.6"
Footprint (L x W)45" x 20"
Unit weight45 lb
Shock absorptionYes (5/10)
AppNo
Warranty1 yr
Rating4 / 5 (1452 ratings)
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