How much does it cost to install acoustic duct boots on every register in a two-storey Ottawa home?

Installing acoustic duct boots on every register in a typical two-storey Ottawa home costs $1,200–$3,500 total, depending on the number of registers, accessibility, and whether you are using prefabricated acoustic boots or custom-built solutions. Most two-storey homes in Ottawa have 12–20 supply registers and 2–4 return air grilles, so you are looking at roughly $60–$180 per register for materials and installation. This is one of the most overlooked yet cost-effective soundproofing upgrades available, especially in open-concept homes where HVAC noise and cross-talk between rooms travel freely through the ductwork.There are two main product categories. Prefabricated acoustic duct boots — such as those from Quietflex, Fantech, or equivalent — are insulated metal or fibreglass-lined boxes that replace or enclose your existing register boots. These cost $40–$90 each for the boot itself and take a qualified HVAC technician 20–40 minutes per register to install. The second option is custom-wrapping existing boots with mass loaded vinyl (MLV) and acoustic insulation, which costs $30–$60 in materials per register but takes longer to install because each boot needs to be individually wrapped and sealed. The prefabricated route is generally faster and more consistent, while the custom approach can be better for non-standard boot sizes common in older Ottawa homes built before the 1980s.Why This Upgrade Makes Such a Big DifferenceDuctwork is essentially a network of metal tubes running through your home — and metal is an excellent conductor of sound. When someone talks in a bedroom on the second floor, that sound enters the supply register, travels down the duct, and exits through every other register connected to the same trunk line. This cross-talk problem is especially noticeable in Ottawa homes with high-velocity or undersized ductwork, which is common in older Centretown row houses, Glebe semi-detached homes, and many 1970s-era Kanata and Nepean builds where ductwork was squeezed into tight spaces. Acoustic duct boots address this by adding mass and absorption right at the point where the duct meets the room, typically reducing cross-talk by 8–15 dB.Labour in Ottawa for this type of HVAC-adjacent work runs $55–$85 per hour, and you should expect the full installation for a typical home to take one to two full days. Access is the biggest cost variable — boots in open basement ceilings are quick to reach, while boots buried above finished ceilings on the second floor may require cutting access holes in drywall, which adds $100–$200 per location for the drywall repair and repainting. If your home has flexible duct runs rather than rigid metal, the flexible duct itself already provides some sound absorption, and acoustic boots may be less critical on those runs — a professional can assess which registers actually need treatment.For the best results, combine acoustic duct boots with lined flex duct transitions (short sections of acoustically lined flexible duct between the trunk line and the boot) for an additional $20–$40 per register. This one-two combination can reduce duct-borne noise by 15–25 dB, transforming a home where every room hears every other room into one with genuine privacy. A soundproofing or HVAC professional can assess your specific ductwork layout and recommend which registers need the most attention. The Ottawa Contractor Directory at justynrookcontracting.com/directory is a helpful resource for finding qualified professionals in the Ottawa area.Looking for experienced contractors? The Ottawa Construction Network connects homeowners with qualified professionals:HomeupgradersJC CarpentryDonovan DrywallGreen Property RestorationsLeeds Property MaintenanceView all contractors →