Moen Posi-Temp Pressure Balancing Eco-Performance Tub and Sh

The Verdict

If you’re remodeling a tub and shower, the Moen Posi-Temp Pressure Balancing Eco-Performance trim kit is the kind of purchase that doesn’t feel exciting but saves your skin — literally. This is the part that keeps you from getting scalded when someone flushes a toilet mid-shower. With 220 ratings averaging 4.4 stars, it’s not perfect, but it’s consistently solid. Here’s what you’re actually getting before you hand over your card.

What’s in the box (and what’s not)

This is a trim kit only. You get the chrome handle, the trim plate/escutcheon, the showerhead, and the shower arm with flange. What you do NOT get is the valve body — the actual pressure-balancing mechanism that mounts inside your wall. You’ll need the Moen Posi-Temp valve (model R2200 or equivalent) separately.

This is the #1 source of confusion among buyers. One reviewer put it plainly: “I didn’t realize this was just the trim. The valve is sold separately. Read the description carefully before ordering.” The listing does state it, but it’s buried. Budget an extra $40–60 for the valve, or check if your contractor already has one in the wall.

Performance and build quality

The Posi-Temp mechanism is the star here. It’s a pressure-balancing valve that maintains water temperature within about ±3°F when incoming water pressure fluctuates. Flush a toilet, start the washing machine, or have someone run the kitchen sink — the water doesn’t jump to scalding or freezing. That’s not a luxury feature; that’s a safety feature, especially if you have kids or elderly family members.

The Eco-Performance designation means the showerhead is flow-limited to 1.75 gallons per minute, down from the 2.5 GPM standard. That’s a 30% reduction in hot water usage, which matters for both your water heater’s capacity and your utility bill. The spray pattern is decent — 16 jets with a decent spread — but it’s not a rainfall experience. You’ll feel the difference if you’re coming from an old 2.5 GPM head.

Build quality is typical Moen: solid metal handle, chrome finish that holds up, and a trim plate that covers rough openings up to 6 inches. The handle operates smoothly with a positive detent at full hot. One buyer noted: “Installation was straightforward, took about 20 minutes once the valve was in place. The chrome still looks new after a year.”

What buyers consistently praise

• Temperature stability is the most-cited win. “Our old valve would turn ice cold when the washer filled. This one holds steady. Worth every penny.”
• Water savings without a dramatic drop in pressure. “I expected a wimpy shower, but honestly it’s fine. Can’t tell a huge difference from our old head.”
• Moen warranty — limited lifetime against leaks and finish defects. You won’t need it often, but it’s there.

Where it falls short

The flow limiter is the most common complaint. If you have low water pressure at your home already, 1.75 GPM can feel like a drizzle. There’s no easy way to remove the limiter — it’s built into the showerhead — so you’re stuck with it unless you swap heads.

The short handle travel is a minor annoyance. The range between “comfortable warm” and “too hot” is a small arc, so dialing in your ideal temperature takes a few showers of adjustment. Not a dealbreaker, but worth knowing.

And again — the separate valve purchase. It’s not a flaw in the product itself, but it’s a cost surprise that trips up first-time buyers.

Who should buy this

• DIY remodelers replacing an old tub/shower setup — you’ll appreciate the straightforward installation and the safety valve.
• Families with kids — the pressure balance feature is non-negotiable when little ones are in the tub.
• Anyone on a water heater who wants to stretch hot water during back-to-back showers.

Skip it if you’re on a well pump with naturally low pressure, or if you’re a “high-flow showerhead” person who needs a drenching spray.

FAQ

Q: Does this include the valve that goes inside the wall? No. You need the Moen Posi-Temp valve body (R2200) separately. Confirm what your contractor is installing before you buy this trim.

Q: Will this work with my existing Moen valve? Only if it’s a Posi-Temp (model numbers starting with R22 or T22). It won’t fit older Moentrol or Standard valves. Check the cartridge inside your current valve before ordering.

Q: Is the showerhead really limited to 1.75 GPM? Yes, that’s the Eco-Performance spec. It’s compliant with California and other low-flow regulations. If you want higher flow, look for Moen’s non-Eco models.

The Verdict

Buy it if you want reliable temperature control, water savings, and a brand with a strong warranty — and you’ve already budgeted for the valve body.

Skip it if you’re on a budget and didn’t plan for the separate valve purchase, or if you need a high-volume shower spray.

Rating: 4.2/5 — Knocked half a star for the flow limiter and the trim-only packaging confusion. Everything else is exactly what a solid, safe tub and shower valve should be.

Where to Buy

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.