Delta Steamist SMP Series Review — 2025 Buyer’s Guide

If you’re planning a home steam shower, the Delta Steamist SMP Series is one of the most practical and reliable choices for mid-range buyers. It’s not the flashiest generator on the market, but it delivers strong performance, simple controls, and long-term dependability — all at a fair price point.

This guide breaks down how the SMP Series works, what makes it different, model sizing, pros and cons, and whether it’s the right generator for your project.

How the SMP Series Works

The SMP Series is designed around one core idea: consistent, reliable steam without unnecessary complexity.

The generator uses Steamist’s proven heating system paired with a compact, wall-mountable body that fits easily in a vanity, closet, basement, or mechanical space within 25 feet of your shower.

One standout feature is the AutoDrain system. This automatically flushes water after each session to help reduce scale buildup and extend the life of the unit — a feature that becomes more valuable the longer you own your steam shower.

Control Options for the Steamist SMP Series

You can pair the SMP with several control systems depending on how simple or advanced you want your setup to be:

Most Common Options

• Delta Steamscape Deluxe — produces steam in under 60 seconds

• Delta Steamscape Classic — temperature, duration, comfort presets

You can also upgrade later with Steamist’s optional wellness modules:

• AromaSense

• ChromaSense

• AudioSense

This modularity makes the SMP Series appealing for homeowners who want the freedom to customize over time rather than buy everything upfront.

Which SMP Model Do You Need? (Sizing Guide)

Choosing the right SMP model depends on your shower’s cubic footage plus adjustment factors for natural stone, high ceilings, or excessive glass.

General Range

• SMP-5 → 100–150 cu. ft

• SMP-7 → 175–225 cu. ft

• SMP-10 → up to ~300 cu. ft

• SMP-12 / SMP-15 / SMP-20 → large and luxury-sized steam showers

Important: If your shower includes marble, granite, or other dense stone, always adjust your cubic footage upward. Stone absorbs heat, meaning you may need a larger size for proper steam output.

If you prefer not to calculate this yourself, Opulent Recreations offers free steam shower sizing — just send your dimensions and materials.

Strengths of the SMP Series

The SMP lineup is popular for several reasons:

1. Rock-Solid Reliability

Steamist generators are known to last for many years with minimal issues.

2. High-Quality Steam Output

The steam feels soft, even, and comfortable — not overly intense.

3. Excellent Value

You get mid-range pricing with near-premium performance.

4. Upgrade-Friendly

Start basic and add modules later as needed.

5. Backed by Delta

Support, availability, and warranty coverage are stronger than ever.

Where the SMP Series May Not Be the Best Fit

The SMP Series is strong, but not ideal for everyone.

You may want to consider other brands if you need:

• Ultra-luxury touchscreen controls

• Voice control or app integration

• The fastest startup times in the industry

• The strongest output for oversized stone showers

For extremely large or stone-heavy builds, ThermaSol or Mr. Steam may offer more consistent heating performance.

Who the SMP Series Is Perfect For

For many homeowners, the SMP Series offers exactly the right balance:

• You want a dependable generator from a reputable brand

• You prefer a clean, simple control system

• You want modular wellness options without paying luxury pricing

• You’re building a mid-range or upper-mid-range steam shower

• You value reliability more than tech bells and whistles

For about 70% of new steam shower builds, the SMP is the “just right” option.

Final Recommendation

If you’re building a home steam shower and you're not specifically seeking the highest-end smart controls, the Delta Steamist SMP Series is one of the strongest choices for 2025.

It’s reliable.
It’s proven.
It’s priced fairly.
And it offers the option to expand with wellness features later.

For most homeowners, it delivers everything a modern steam shower should.

💬 Join The Steam & Sauna Blueprint Community

If this inspired you to start designing your dream bathroom spa, join our free Skool community — The Steam & Sauna Blueprint

Connect with designers, wellness experts, and homeowners transforming their spaces into personal retreats. You’ll also get access to product guides, brand comparisons, and personalized recommendations from our team at Opulent Recreations.

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