ClariSelect
Air Filtration Authority
HEAD-TO-HEAD TECHNICAL SHOWDOWN

Lennox Healthy Climate X6670 vs. Lennox Healthy Climate X6672

Deep media comparison. Housing track fitment, static resistance curves, and service life.

Affiliate Disclosure: ClariSelect is reader-supported. When you purchase through links below, we may earn an affiliate commission at no extra cost to you. Product comparisons reflect objective engineering evaluations. Full disclosure
Lennox

Lennox Healthy Climate X6670

Studio Photo Pending
Lennox X6670
Specs & documentation verified
$59.99
Full Review & Specifications
VS
Lennox

Lennox Healthy Climate X6672

Studio Photo Pending
Lennox X6672
Specs & documentation verified
$99.99
Full Review & Specifications

ClariSelect Editorial Showdown Verdict

Choose Lennox Healthy Climate X6670 if your primary objective is higher particle arrestance and allergen control. Choose Lennox Healthy Climate X6672 if you require lower airflow resistance for an older blower motor or prefer economical multi-pack pricing.

Performance & Specification Comparison Matrix

Evaluation Metric Lennox Healthy Climate X6670 Lennox Healthy Climate X6672
Filtration Capacity 9.6 9.5
Static Pressure 9.7 9.6
Frame Integrity 9.5 9.4
Service Life 9.5 9.5

3-Year True Ownership Cost Comparison

Economic Factor Lennox Healthy Climate X6670 Lennox Healthy Climate X6672
Estimated Annual Upkeep 59.99 99.99
Single Filter Retail Est. $59.99 $99.99
Multi-Pack Value Advantage Standard Retail 4-Packs Standard Retail 4-Packs

Engineering Specification Matchup

Technical Spec Lennox Healthy Climate X6670 Lennox Healthy Climate X6672
Filter Depth 5-inch 5-inch
MERV Rating MERV 11 MERV 16
Replacement Cycle 6-12 Months 6-12 Months
Cartridge Price $59.99 $99.99
CLARISELECT EDITORIAL ANALYSIS

Deep Technical Evaluation

1. Filtration Efficiency & Real-World Sub-Micron Arrestance

Filtration Efficiency & Capture Profile: Lennox Healthy Climate X6670 operates with a rated filtration level of MERV 11 compared to MERV 16 for Lennox Healthy Climate X6672. In standard ASHRAE 52.2 or AHAM testing, higher MERV ratings capture a larger fraction of sub-micron particles (0.3 to 1.0 microns), including wildfire smoke, aerosolized droplets, and fine dust, whereas lower ratings prioritize low resistance for general household lint.

2. Airflow Dynamics & HVAC Blower Resistance

Airflow Resistance & Equipment Dynamics: Airflow resistance across Lennox Healthy Climate X6670 must be evaluated against your system's blower architecture. On single-speed PSC blowers, installing higher-density media can elevate Total External Static Pressure (TESP), potentially reducing system CFM. For sensitive systems, Lennox Healthy Climate X6670 offers lower initial static drop, preserving equipment cooling capacity.

3. Multi-Year Consumable Economics & Value

Critical Cabinet Housing Fitment Notice: 4-inch and 5-inch media filters require a dedicated in-line cabinet. Aprilaire collapsible accordion media (with Self-Seal plastic slide rails) fits proprietary Aprilaire cabinets (such as 1210, 1410, 2210, 2410). Rigid cardboard-framed box filters (such as Honeywell FC100) fit flat channels like the Honeywell F100/F200. These formats are physically non-interchangeable; confirm your cabinet model number before purchasing.

Choose Lennox Healthy Climate X6670 If:

You require maximum sub-micron capture for severe asthma, seasonal allergies, or wildfire smoke, and your HVAC system has sufficient static pressure headroom.

Choose Lennox Healthy Climate X6672 If:

You want balanced everyday allergen capture with lower airflow resistance, or prefer stocking up on multi-packs to cut annual consumable costs significantly.