Midea Anshui M9 Max Gas Water Heater Review 2026: Quiet 16L at ¥1,459

The Midea Anshui M9 Max (JSQ30-M9 Max) is the 16L gas water heater that brought first-tier quiet-sleep certification to the ¥1,400-1,500 price point. On JD it has been as low as ¥1,459.25 with stacked subsidy coupons (list higher), and on Tmall’s 100-billion subsidy channel it hit ¥1,246.1 — a 1,033-day low, per SMZDM. The Anshui (“quiet sleep”) line is Midea’s direct answer to the complaint that gas water heaters mounted next to bedrooms wake the whole family at midnight: first-tier quiet technology with auto temperature adjustment at night, wrapped in a 30kW 16L strong-exhaust unit. Xiaohongshu’s 238-like “M9 Max vs Haier KL7 ultimate choice” thread and its 390-like “installation follow-up with detailed fees” post show the two things owners actually debate: whether the quiet claim holds, and how much installation really costs. The 27-like “you dare call this quiet?” and 95-like “three-day research, still returned it” threads are the counterweights. Conclusion: ✅ Best value quiet-sleep 16L unit for families whose heater mounts near bedrooms, on a budget; ⚠️ budget for installation accessories and confirm the free-install scope before you buy.

Specifications

Specification	Detail
Model	Midea Anshui M9 Max (JSQ30-M9 Max)
Capacity	16L, 30kW strong-exhaust gas
Quiet rating	First-tier quiet technology (Anshui series) — automatic temperature adjustment at night
Temp control	Auto water-temperature adjustment, night sleep mode
Energy	2nd-tier+ (series); national subsidy applies
Price (Aug 2026)	¥1,459.25 JD stacked (08-03); ¥1,246.1 Tmall subsidy (07-20, 1,033-day low)
JD listing	JD self-operated

What Chinese Users Say

The Anshui M9 Max sits at the center of the most active gas-water-heater debate on Xiaohongshu right now: how much does first-tier quiet actually cost, and is the installation bill going to eat the savings? SMZDM’s July 2026 12-model buying guide places the Anshui line as Midea’s quiet flagship, and XHS threads split cleanly between “quiet is real” owners and “the installer charged me a fortune” complainers.

Quiet Operation: The Core Claim

“Runs extremely quietly — quieter than the refrigerator, basically doesn’t disturb the family at night.” — SMZDM 12-model guide, aggregated user view (2026-07-17)

“Midea m9smax — you have the nerve to call yourself quiet??” — Xiaohongshu user @momo (29 likes, 2025-10-15)

“Three days and three nights of research led me to the M9S MAX — and I still returned it.” — Xiaohongshu user @Liuliuhenliu (95 likes, 2026-01-27)

The quiet claim is the series’ reason for existing, and it holds for most owners — the Anshui series uses a sealed combustion chamber plus noise-reduction algorithms, and SMZDM’s aggregate view confirms fridge-level operation. But the XHS “you dare call yourself quiet” thread shows the claim is sensitive to installation: a heater mounted on a thin shared wall, or with the flue too close to a bedroom window, will be audible regardless of certification. The returned-unit thread is the usual mix of personal tolerance and possible QC variance. Buy from JD self-operated for easy returns.

The Installation Cost Trap

“Installation follow-up with detailed fees — the accessories are where they get you.” — Xiaohongshu user @Xiaozhao’s Home (390 likes, 2026-01-15)

“Midea m9rmax installation assassin.” — Xiaohongshu user @Yangguang (27 likes, 2025-09-20)

“Don’t be a sucker installing Rinnai — bring your own accessories, save 600+, with price list” — same pattern applies to Midea — Xiaohongshu user @XiaoC French Vintage Home (152 likes, 2026-06-21)

This is the #1 gripe across all gas water heater XHS threads, and Midea is no exception: the “free installation” is machine-only. Valves, flue pipe, elbows, and a bypass valve can add ¥200-600, and multiple “installation assassin” threads call it out. The 390-like fee-detail post is the most useful resource — it itemizes exactly what the installer charges, so you can buy the accessories yourself on JD/Taobao beforehand and save hundreds. Confirm the free-install scope in writing with the seller before ordering.

Value and Positioning

“M9 Max and Haier KL7 — ultimate two-choice dilemma.” — Xiaohongshu user @Xiaolu’s Home (238 likes, 2026-05-18)

“Got the Midea M9max for 1400-something — worth it?” — Xiaohongshu user @Momo Not Momo (22 likes, 2025-10-17)

“Safe landing on the Midea M9Max.” — Xiaohongshu user @Want A Home In Nanning (10 likes, 2026-01-06)

The ¥1,400-1,500 price with the subsidy is the machine’s main weapon — XHS owners routinely frame it as the “1400-something” quiet 16L unit, and the M9 Max vs Haier KL7 comparison is the biggest thread in the segment (the KL7 runs ~¥2,700, nearly double). For the price, the Anshui M9 Max is the quiet-sleep value pick; the Haier KL7 is the spec-superior pick if you want AI dual-loop constant temperature and TSI boost at 2x the cost.

The Anshui 2.0 Family Context

The M9 Max is the base of the Anshui 2.0 family. The step-up M9T Max (¥2,291 on JD) adds five first-tier quiet certifications (noise down to 34.62dB), super-tier-1 efficiency (101.3-107.2%, ~¥5,000 gas saved over 8 years), TSI turbo boost (water +188%, pressure +66%), and 0.2s fast response with ±0.1-0.5°C stability. If quiet is the absolute priority and budget allows, the M9T Max is the family’s flagship; the M9 Max is the price play that made the series famous.

Pros & Cons

Pros:

• First-tier quiet-sleep tech at a sub-¥1,500 price (Tmall as low as ¥1,246)
• 16L 30kW strong-exhaust — enough for a 2-bathroom household
• Auto night temperature adjustment — the “sleep” feature actually works
• National subsidy stacks for real savings
• Midea service network is nationwide

Cons:

• Installation accessories routinely add ¥200-600 — “installation assassin” is a real XHS meme
• Quiet claim is installation-sensitive (thin walls / flue placement matter)
• Base model lacks the M9T Max’s turbo boost (water +188%)
• Some QC/return variance in XHS threads — buy JD self-operated
• No zero-cold-water / recirculation on this model (needs the M9R/M9S variants for that)

vs Competitors

Spec	Midea Anshui M9 Max	Haier KL7S	Midea Anshui 2.0 M9T Max	Rinnai 16GD33
Capacity	16L	16L	16L	16L
Quiet	First-tier (sleep tech)	First-tier, 36dB	5× first-tier, 34.62dB	Standard
Constant temp	Auto adjust	7A + AI dual-loop	±0.1-0.5°C, 0.2s	Water-servo
Boost	No	TSI 200%	TSI 188%	No
Efficiency	Tier-2+	Tier-2	101.3-107.2%	Standard
Price (Aug 2026)	¥1,459	~¥2,704	¥2,291	¥2,786

The M9 Max’s edge is purely price-to-quiet: it delivers first-tier sleep certification at roughly half the KL7S’s cost. The M9T Max is the value-for-spec upgrade if boost and super-efficiency matter. The Rinnai 16GD33 is the durability/Japanese-brand alternative at nearly double the price.

FAQ

Q: Is the Anshui M9 Max actually quiet enough for a bedroom-adjacent install? A: The series carries first-tier quiet certification and SMZDM’s aggregate view confirms refrigerator-level operation. But the real-world result depends on installation: a shared thin wall or poorly placed flue makes any gas heater audible. Mount it on a solid wall away from the bedroom window, and most owners report night showers don’t disturb sleep.

Q: Why do people call Midea water heater installation an “assassin”? A: The machine install is free, but accessories (valves, flue, elbows, bypass) aren’t — XHS threads report ¥200-600 in extra charges, and the highest-like thread itemizes the full fee list. Buy the accessory kit yourself (JD/Taobao) before the installer arrives, or confirm the free-install scope in writing.

Q: Does the M9 Max have zero-cold-water (recirculation)? A: No — that’s on the M9R/M9S variants in the family. The M9 Max is the base quiet model. If instant hot water at every tap matters, step up or add a recirculation pump.

Q: Is ¥1,246-1,459 a good price? A: Yes — SMZDM flagged the ¥1,246 Tmall price as a 1,033-day low, and the ¥1,459 JD stacked price is the standard good-buy level. Prices move with subsidy windows, so both are solid entry points.

Q: M9 Max vs Haier KL7 — which should I pick? A: The KL7 (~¥2,700) is nearly double the price and buys AI dual-loop constant temp, TSI 200% boost, and 36dB quiet. If you have the budget and want the best-in-class spec, KL7. If you want first-tier quiet at the best price, the M9 Max is the value pick most XHS buyers land on.

Rating: 8.3/10

Who should buy this: Budget-conscious families who need a quiet 16L unit mounted near bedrooms; buyers upgrading from an old noisy heater without wanting to spend ¥2,500+; anyone who wants the Tmall subsidy price (~¥1,246) while it lasts.

Who should skip: Households that need turbo boost for low water pressure (step to the M9T Max); anyone who wants zero-cold-water recirculation (different variant); buyers who refuse to manage installation accessories — budget for them or you’ll be surprised at the final bill.