--- title: Duct Work Services in Southern NH | Free State Cooling & Heating description: Professional duct design, installation, sealing, and cleaning in Nashua NH & Southern New Hampshire. Improve airflow and cut energy costs. url: https://freestatehvac.com/services/duct-work last_updated: 2026-04-16 --- # Duct Work Improve airflow and efficiency with professional duct services. ## Overview Your ductwork is the highway for conditioned air throughout your home. Leaky, damaged, or poorly designed ducts waste energy and create hot and cold spots. We design, install, seal, and clean duct systems to maximize comfort and efficiency. Improve airflow and efficiency with professional duct design, installation, sealing, and cleaning services from Free State Cooling & Heating. ## What's Included - Custom duct design and professional installation - Duct sealing to eliminate costly air leaks - Thorough duct cleaning to improve air quality - Insulation upgrades for ducts in unconditioned spaces ## Our Process ### 1. Assessment We evaluate your system and needs. We inspect the full run of ductwork, test for leaks, and identify rooms that feel too hot, too cold, or too stuffy. ### 2. Recommendation We provide honest options and pricing. We outline whether sealing, repair, cleaning, or partial redesign is the right move, and explain the expected comfort and energy impact. ### 3. Service Our licensed technicians get to work. We complete duct work cleanly, protect your home, and minimize disruption to your daily routine. ### 4. Follow-Up We ensure your complete satisfaction. We verify airflow and balance across rooms, confirm energy performance, and follow up to make sure the improvements match what we promised. ## Frequently Asked Questions ### How do I know if my ductwork needs to be replaced? Signs of failing ductwork include uneven temperatures between rooms, excessive dust in the home, visible duct damage or disconnection, musty odors when the system runs, and high energy bills. Ducts typically last 15-25 years before joints loosen and insulation deteriorates. A duct inspection can identify whether sealing, repair, or replacement is the right solution. ### What is duct sealing and is it worth doing? Duct sealing involves closing gaps, cracks, and loose connections in your ductwork to prevent conditioned air from escaping into unconditioned spaces like attics and crawlspaces. The average home loses 20-30% of heated or cooled air through duct leaks. Sealing your ducts can noticeably improve comfort and reduce energy costs. ### Can you add ductwork to an older home that does not have it? Yes, though it requires careful planning. In some older homes, we can route ducts through closets, soffits, and chases with minimal disruption. In cases where traditional ductwork is impractical, we may recommend a ductless mini-split system as an alternative. We will assess your home and present the best options. ### How often should air ducts be cleaned? The National Air Duct Cleaners Association recommends cleaning every 3-5 years, or sooner if you have pets, smokers, recent renovations, or notice visible mold or pest activity. Regular duct cleaning removes accumulated dust, allergens, and debris that can affect air quality and system efficiency. ## Related Services - AC Installation & Repair — /services/ac-installation-repair - Heating Installation & Repair — /services/heating-installation-repair - Maintenance Plans — /services/maintenance-plans - Indoor Air Quality — /services/indoor-air-quality ## Contact - **Sales:** (603) 718-0810 - **Service:** (603) 493-2236 - **Email:** fscoolingandheating@gmail.com - **Address:** 221 Main Street, STE R, Nashua, NH - **Hours:** Mon-Fri 7am-6pm | Emergency 24/7 - **Service Area:** Southern New Hampshire and Northern Massachusetts