Bryant Evolution 187B / Preferred 187BNV – Legacy Specs & Replacement Options
The Evolution 187B (also cataloged as 187BNV) was Bryant’s premium two-stage air conditioner through 2022, delivering up to 18 SEER2 performance, solid humidity control, and quiet operation for Portland summers. Bryant retired this model when DOE 2023 efficiency standards took effect, replacing it with the variable-speed Evolution 189BNV. We maintain this page so homeowners with an existing 187B can confirm specs, warranties, and see today’s recommended replacements.
⚠️ Discontinued Model Notice
Bryant no longer manufactures the Evolution 187B/187BNV. Parts, warranty support, and repairs are still available, but all new installations now use the Evolution 189BNV or Preferred 148T series. Use the comparison table below—or call503-698-5588—to get matched with the right current model.
Professional installation • Energy Trust rebates available on current Bryant models • 10-year parts warranty with registration
Recommended Replacements for the Evolution 187B
Choose the upgrade path that best matches your comfort goals. We compare the legacy 187B specs with today’s Evolution and Preferred options so you can see exactly how performance, rebates, and sound levels improve.
| Model | Efficiency | Sound | Compressor | Best For |
|---|---|---|---|---|
| Evolution 187B (Legacy) | Up to 18 SEER2 / 12 EER2 | As low as 71 dB | Two-stage scroll | Existing systems installed through 2022; still serviceable but no longer sold |
| Evolution 189BNV (Current) | Up to 19 SEER2 / 13 EER2 | As low as 56 dB | 5-stage variable-speed compressor | Homeowners who want the quietest operation, top-tier rebates, and Bryant’s Perfect Humidity control |
| Preferred 148T (Current) | Up to 17 SEER2 / 12.5 EER2 | As low as 67 dB | Two-stage scroll compressor | Mid-tier budgets that still want two-stage comfort and ENERGY STAR® performance |
| Legacy 135SAN (Current) | Up to 16.5 SEER2 | As low as 71 dB | Single-stage compressor | Entry-level replacements or rental properties where upfront cost matters most |
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Legacy 187B / 187BNV Technical Specifications (for Existing Systems)
Use these specs to confirm proper service parts, warranty coverage, and performance benchmarks for existing 187B systems. New installations now use the Evolution 189BNV or Preferred 148T platforms.
Performance Specifications
Installation & Warranty
Key Performance Features
The Preferred 187BNV delivers advanced comfort features with reliable variable-speed operation. Each feature is designed to enhance your cooling experience and reduce energy costs.
2-Stage Scroll Compressor
Operates at low stage most of the time, high stage for extreme heat
Benefit: Reduces temperature swings, lowers energy use by 20-25%, quieter than single-stage
Excellent Humidity Control
Long low-stage runtimes wring out moisture during Portland’s humid spring and fall shoulder seasons
Benefit: Maintains comfortable humidity levels, reduces mold growth and allergens compared to single-stage systems
Variable-Speed Blower
When paired with an Evolution air handler or furnace, the ECM blower provides multiple airflow profiles
Benefit: Better air filtration, improved comfort, reduced noise, and enhanced dehumidification
Smart Thermostat Compatible
Works with Bryant smart thermostats for enhanced control
Benefit: Remote monitoring, scheduling, energy optimization capabilities
Quiet Performance
Advanced sound reduction technology minimizes operational noise
Benefit: Peaceful operation suitable for residential neighborhoods
Reliable Construction
Built with durable materials and advanced diagnostics
Benefit: Long service life, easy troubleshooting, comprehensive warranty coverage
Legacy 187B Efficiency Comparison
Compare the 187B’s legacy efficiency to today’s Bryant models and to older 14 SEER equipment. New DOE 2023 standards use SEER2, which runs about 4.7% lower than the old SEER rating—values below have been updated accordingly.
| Model | SEER2 / SEER | Annual Savings | Key Features |
|---|---|---|---|
| Evolution 187B | Up to 18 SEER2 | $300-$500 |
|
| Evolution 189BNV | Up to 19 SEER2 | $500-$800 |
|
| Standard 14 SEER (older AC) | 14 SEER (pre-2023) | Baseline |
|
💰 Portland Energy Savings
Portland homeowners save $300-$500 annually with 17 SEER vs 14 SEER efficiency. Electricity costs ~$0.12/kWh. Variable-speed operation provides consistent comfort savings.
*Based on 1,000 cooling hours, $0.12/kWh electricity cost. Actual savings vary by usage.
Legacy Home Size Recommendations
These guidelines show how contractors sized the Evolution 187B across typical Portland home footprints. Use them as a reference point when comparing replacement options or verifying existing installations.
600-1,000 sq ft
Perfect for smaller homes, condos, or apartments
1,000-2,200 sq ft
Excellent for most Portland single-family homes
2,200-3,000 sq ft
Handles larger homes with good zoning design
⚠️ Proper Load Calculation Essential
AC sizing affects efficiency by 20-30%. We provide FREE Manual J load calculations considering Portland's humidity, wildfire smoke, and shading patterns before recommending a replacement.
Free Load CalculationInstallation Requirements - Portland
These were the core requirements when installing an Evolution 187B. They are still relevant when servicing one or swapping it for today’s Evolution or Preferred models.
Refrigerant Line Set
Properly sized lines (typically 3/8" liquid, 3/4" suction for 2-3 ton units)
Note: Professional installation required for proper evacuation and charging
Electrical Service
208/230V circuit with disconnect switch and proper grounding
Note: Electrical inspection required by Portland building codes
Condensate Drainage
Proper drain line with trap to prevent water damage
Note: Must ensure proper drainage and prevent overflow
Unit Clearance
24-30" clearance around unit for airflow and service access
Note: May require landscaping adjustments for existing installations
Bryant Evolution 187B FAQs - Portland
Planning Your Evolution 187B Replacement
Already own an Evolution 187B? We’ll keep it operating safely with OEM parts, refrigerant leak repairs, and annual tune-ups. Ready to upgrade? We’ll compare the Evolution 189BNV, Preferred 148T, and Legacy 135SAN side-by-side, factor in rebates, and build a financing plan that fits your budget. Experience the same Bryant craftsmanship with today’s higher-efficiency platforms.