ErgoCentric Ergo Force Mid Back

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View Our Chair Fitting Form — Click Here Professional Ergonomic Task Chair with Multi-Tilt Mechanism & Air Lumbar Support The ergoCentric ergoForce Mid Back Task Chair delivers exc eptional adjustability, durability, and all-day comfort for demanding office environments. Built with commercial-grade components and advanced ergonomic controls, this chair adapts to your body and work style—making it ideal for corporate offices, healthcare facilities, laboratories, and professional workstations where ergonomic performance matters. Why ergoForce Delivers Professional-Grade Ergonomics Multi-Tilt Mechanism: Advanced tilt controls with infinite lock free-float recline, back angle adjustment, adjustable spring tension, forward tilt with lockout, and 2.5" seat depth adjustment Air-Adjustable Lumbar & Thoracic Support: Dual air bladders provide precise spinal support customized to your body—pump up or release air for perfect lower and mid-back positioning Breathable Mesh Backrest: 19"W x 26"H mesh back promotes airflow to keep you cool during long work sessions while providing flexible support Triple-Density Foam Seating: Extra-long seat (20"W x 21"D) with premium foam cushioning provides pressure distribution and long-lasting comfort tCentric Adjustable Armrests: Height, width, and swivel adjustments allow proper arm positioning for typing and mouse work—reduces shoulder and wrist strain 5" Back Height Adjustment: Accommodates different torso lengths and ensures lumbar support aligns with your lower back Heavy-Duty Construction: 27" glass-reinforced nylon base, 140mm pneumatic lift (17.5"–23" seat height), dual-wheel urethane casters for hard floors Made in Canada: Engineered and manufactured by ergoCentric with commercial-grade quality and durability Technical Specifications Backrest: Breathable mesh, 19"W x 26"H Back Height Adjustment: 5" range Lumbar & Thoracic Support: Air-adjustable dual bladder system Seat: Extra-long upholstered seat, 20"W x 21"D; triple-density foam Seat Depth Adjustment: 2.5" slider Mechanism: Multi-tilt with infinite lock, back angle adjustment, spring tension control, forward tilt lockout Seat Height Range: 17.5"–23" (140mm pneumatic lift) Armrests: tCentric adjustable (height, width, swivel) Base: 27" glass-reinforced nylon (Hercules base) Casters: Dual-wheel urethane for hard surface floors Country of Origin: Made in Canada Manufacturer: ergoCentric ⚠️ Made-to-Order: Each chair is made-to-order based on your selections to ensure the best fit and performance. Because of this, orders are final—but we're here to help you get it right. Frequently Asked Questions What makes the ergoForce different from a standard ergonomic task chair? The ergoForce is built to a commercial specification that most consumer-grade ergonomic chairs don't match. The dual air bladder lumbar and thoracic system, triple-density foam seat, 5" back height adjustment range, and multi-tilt mechanism with infinite lock are features typically found in chairs costing significantly more. For users who sit 6–8+ hours daily in corporate, healthcare, or lab environments, this level of adjustability translates directly to better posture, less fatigue, and fewer musculoskeletal complaints over time. What is the dual air bladder lumbar and thoracic system? Most ergonomic chairs offer a single lumbar support point. The ergoForce includes two independently adjustable air bladders—one at the lumbar (lower back) and one at the thoracic (mid-back) region. Each bladder can be inflated or deflated independently using the pump bulb, allowing you to customize support pressure at both spinal zones simultaneously. This is particularly valuable for users with complex back conditions or those who need support across a larger portion of the spine. Is this chair appropriate for users with lower back pain, herniated discs, or sciatica? The ergoForce's dual air lumbar and thoracic system provides a level of spinal support customization that is clinically relevant for users managing lower back pain, herniated discs, or sciatica. The ability to independently adjust lumbar and thoracic pressure—combined with the 5" back height adjustment—allows precise positioning of support at the exact spinal levels that need it. For users with existing conditions, we strongly recommend a professional ergonomic assessment before ordering to confirm the right configuration. Book a consultation with our certified specialists. What does the multi-tilt mechanism offer that standard tilt doesn't? A standard tilt mechanism reclines the entire chair as one unit from a fixed pivot point. The ergoForce's multi-tilt mechanism allows independent back angle adjustment, infinite lock at any recline position, forward tilt capability for task-focused work, and adjustable spring tension to match your body weight. This gives you far more control over your seated posture throughout the workday—whether you're leaning forward to focus, sitting upright for calls, or reclining during reading tasks. How does the ergoForce compare to the tCentric Hybrid series? The ergoForce and tCentric Hybrid are both ergoCentric commercial-grade chairs, but they serve different needs. The ergoForce features a larger seat (20"W x 21"D), dual air bladder lumbar and thoracic support, and a more robust multi-tilt mechanism—making it better suited for users who need maximum adjustability and a larger seating platform. The tCentric Hybrid series offers 3 size options (Petite, Standard, Plus) and a more streamlined profile—better for users who need precise size matching. Our specialists can help you determine which is right for your body and environment. Book a consultation. Is this chair suitable for healthcare, lab, or corporate office environments? Yes—the ergoForce is used across corporate offices, healthcare workstations, clinical environments, laboratories, and executive home offices. Its commercial-grade construction, Made in Canada quality, and comprehensive adjustability make it appropriate for demanding professional use. For healthcare or lab environments with specific cleaning or material requirements, contact us to confirm compatibility with your protocols. Is this chair appropriate for post-surgical recovery or rehabilitation seating? The ergoForce's dual air bladder system and extensive adjustability make it one of the more configurable options for post-surgical seating needs. However, post-surgical requirements are highly specific to the procedure and recovery stage. We recommend consulting with your healthcare provider and booking an ergonomic assessment with our Bay Area certified specialists before ordering. Book a consultation. Can I try this chair before ordering? Yes—visit our Bay Area showroom where our certified ergonomic specialists can walk you through the ergoForce and compare it to other ergoCentric models. Virtual consultations are also available for clients outside the Bay Area. Schedule a consultation. What warranty is included? The ergoForce includes ergoCentric's manufacturer warranty. Contact us for full warranty terms and coverage details specific to this model. How long does delivery take? As a made-to-order chair, lead times vary by configuration. Contact us before ordering for current production and shipping estimates. Why Ask Ergo Works? With 30+ years of ergonomic expertise, Ask Ergo Works is not a general furniture retailer — we are certified ergonomic specialists serving corporate offices, healthcare systems, labs, and professional workstations across the Bay Area and nationwide. Certified specialists — Professional ergonomic certifications and ongoing clinical training Professional assessment process — We evaluate your posture, work habits, health conditions, and environment before recommending a chair and configuration Personalized recommendations — Every recommendation is specific to your body dimensions, workspace, and any relevant health considerations Enterprise & B2B experience — Volume purchasing support for corporate offices, healthcare, education, tech, and lab environments Post-purchase support — Available after delivery to assist with setup, adjustments, and ongoing ergonomic guidance Not sure if the ergoForce is right for you? We offer ergonomic consulting services to help you get it right before you order. Learn more and book a consultation. Show more