A Zehnder ComfoAir Q350 typically costs about $3,500-$5,500 for the ventilation unit, while a professionally installed system often totals $7,000-$14,000. Ductwork, access, electrical work, controls, and local labor rates are the main reasons quotes vary.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Q350 unit | $3,500 | $4,500 | $5,500 | Equipment only; model and seller affect price |
| Installed with usable ducts | $6,000 | $8,500 | $11,000 | Replacement or straightforward retrofit |
| New system with ductwork | $9,000 | $12,000 | $17,000 | Includes distribution ducts and installation |
| Typical airflow capacity | Up to 206 CFM | About 206 CFM | About 206 CFM | 350 m³/h maximum nominal airflow |
What a ComfoAir Q350 costs with installation
The Q350 is a balanced heat-recovery ventilation unit designed for continuous fresh-air supply and stale-air exhaust. A standard equipment-only budget is roughly $3,500-$5,500; a complete installation commonly reaches $7,000-$14,000, depending on whether ducts already exist and how much balancing is needed.
For a home with suitable ductwork, plan near $8,500 installed; a full ducted retrofit can exceed $12,000. The estimates assume a typical U.S. home, standard access, ordinary installation hours, and no major structural repairs. Regional availability and distributor pricing can shift the equipment figure.
Assumptions: Standard residential installation, typical U.S. labor, no extensive remodeling or unusual permitting.
How the unit, ducts, and controls shape the quote
Quotes differ in what they include. Confirm whether the proposal covers the ventilation unit, insulated duct runs, outdoor intake and exhaust hoods, condensate drain, electrical connection, controls, startup, and airflow balancing.
| Quote component | Low | Average | High | Typical scope |
|---|---|---|---|---|
| Q350 equipment | $3,500 | $4,500 | $5,500 | Unit, before accessories |
| Labor and commissioning | $1,500 | $2,700 | $4,500 | Set, connect, test, and balance |
| Ducts and grilles | $800 | $2,500 | $5,000 | Existing duct reuse lowers cost |
| Electrical, drain, exterior terminals | $300 | $900 | $1,800 | Access and routing determine scope |
| Delivery, removal, misc. | $150 | $500 | $1,000 | Old equipment removal if required |
Ask for equipment and installation as separate line items. This makes it easier to compare proposals that may include different ductwork, controls, or commissioning services.
Which airflow setting and duct length raise the price?
The Q350’s maximum nominal airflow is about 206 CFM, but the home’s ventilation design determines the required operating rate. A system needing only modest airflow may use smaller ducts and simpler distribution than one serving a large home with many rooms or long branches.
Duct length and routing matter: short, accessible runs may fit a retrofit budget, while roughly 100 feet or more of new duct, multiple floor penetrations, or concealed routing can add $1,500-$4,000 or more. A design requiring airflow above the unit’s practical capacity may call for another system size rather than simply higher fan settings.
Have the installer document room-by-room airflow targets and measured commissioning results. Poorly sized ducts can increase noise, reduce delivered airflow, and undermine the value of the equipment.
How to trim the ComfoAir Q350 project price
Retaining compatible ducts, grilles, and exterior penetrations can avoid substantial demolition and material charges. Before approving reuse, ask the contractor to check duct condition, insulation, cleanliness, and whether the layout can deliver balanced airflow.
Control scope before choosing upgrades. Request a base quote with essential equipment and commissioning, then price optional controls or duct changes separately. Obtain at least two comparable bids, including the same model, included parts, airflow setup, warranty terms, and removal work.
How many labor hours does Q350 installation take?
A straightforward replacement using existing connections may take about 8-16 labor hours, often completed by a small mechanical crew in one day. A new ducted installation can require 24-50 labor hours spread across several visits, especially when ducts pass through finished walls or multiple floors.
Ventilation and HVAC labor commonly runs about $75-$150 per hour per technician, with higher rates in expensive metro areas. A two-person crew working 12 hours at $100 per hour represents $2,400 in labor before overhead, travel, or commissioning.
Why U.S. region and access change installed pricing
Labor and distribution access can create meaningful regional differences. Dense coastal metros may run about 15%-30% above a typical national estimate, while some rural markets may be 5%-15% lower but charge more for travel or equipment delivery.
These are planning adjustments, not fixed regional tariffs. A hard-to-reach attic, tight utility room, roof work, or long drive can outweigh the local average. Ask whether the quote includes travel, lift equipment, and any finish repair after duct routing.
What add-ons can appear on a Q350 estimate?
Optional controls, sensors, silencers, filters, and duct accessories can add roughly $150-$1,200 depending on the chosen package and installation. Electrical circuit changes may add $300-$1,000, while opening and repairing finished surfaces can add $500-$2,500 or more.
Existing equipment removal and disposal may cost $150-$600. Permit requirements vary by municipality; when needed, allow about $100-$500 for permit fees, excluding any required code upgrades or inspection work. The installer should identify these items before work begins.
Is a Q350 replacement cheaper than a new ventilation system?
Replacing an existing compatible HRV or ERV can cost less than installing a complete system because ducts and exterior openings may remain in service. A practical replacement budget is about $6,000-$11,000 installed, compared with roughly $9,000-$17,000 for a new ducted layout.
Do not assume an old system’s ductwork is reusable without inspection. Damaged insulation, undersized branches, contamination, or incompatible controls can erase the apparent savings. Compare the Q350 quote with a suitable alternative only after confirming required airflow, heat-recovery performance, included controls, and warranty coverage.