The Zehnder ComfoAir 350 price typically ranges from $3,000-$8,000 installed depending on system options and home size. Buyers usually pay between $4,500-$6,000 for a complete install in an average U.S. home; major drivers are ductwork, controls, heat recovery core, and local labor rates.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Unit Only | $2,000 | $3,000 | $4,200 | ComfoAir 350 unit, base model |
| Installation | $1,000 | $2,000 | $3,500 | Includes basic duct tie-in and labor |
| Ductwork & Accessories | $200 | $800 | $2,000 | New runs, grilles, silencers |
| Controls & Heat Recovery | $0 | $200 | $500 | Upgrades, enthalpy cores, sensors |
| Total Installed | $3,000 | $4,500 | $8,000 | Assumptions: Single-family 1,800-2,400 sq ft, accessible attic or basement, Midwest labor. |
Typical Out-The-Door Price For a ComfoAir 350 System In a 2,000 Sq Ft Home
Most homeowners pay $4,000-$6,000 total for the Zehnder ComfoAir 350 when installing in a 1,500-2,500 sq ft house with existing duct branches or simple new runs. This range assumes standard installation access, no major structural changes, and use of the standard plate core (non-enthalpy).
Assumptions: one-story equivalent ventilation needs, 4-6 supply/return terminals, typical attic or basement equipment location.
Breakdown Of Major Cost Components In a Typical Quote
The typical quote separates the purchase into unit, materials, labor, and disposal or permits; knowing these lines helps compare bids accurately. Expect the unit to be 40%-70% of parts cost while labor and ductwork can equal or exceed the unit price on complex jobs.
| Materials | Labor | Equipment | Delivery/Disposal | Contingency |
|---|---|---|---|---|
| $2,000-$4,200 (unit, filters, cores) | $1,000-$3,000 () | $0-$300 (lifts, scaffolding) | $0-$250 (old equipment disposal) | $200-$600 (unexpected repairs) |
Which Variables Most Often Increase The Final Quote
Key cost drivers include duct length added, number of terminals, and heat-recovery options; significant thresholds change price materially. Adding more than 12 terminals or more than 100 linear feet of new rigid duct typically raises labor and materials by 20%-60%.
Examples of thresholds: upgrading to an enthalpy core adds $200-$500; long vertical runs over 20 ft or difficult access can add $400-$1,200.
How Ductwork, Grilles, and Terminals Affect Price Per Unit
Terminal and grille costs are small individually but add quickly across a whole-home install; plan per-unit pricing when budgeting. Budget $40-$150 per terminal grille and $4-$9 per sq ft for added duct lining or insulating wraps if required.
| Item | Per Unit | Range |
|---|---|---|
| Supply/Return Terminal | per terminal | $40-$150 |
| New 6″ Flexible Duct | per linear ft | $1.50-$4 |
| Rigid Duct (sheet metal) | per linear ft | $6-$12 |
| Silencer / Sound Box | per unit | $100-$400 |
Options That Raise The Price: Enthalpy Core, Pre-Heat, and Frost Protection
Upgrades change performance and price; enthalpy cores, pre-heaters, and frost protection are common add-ons. Add $200-$600 for enthalpy moisture recovery, $300-$900 for electric pre-heat or frost control, and $150-$400 for advanced controls.
These features are worth considering where humidity control, cold climates, or tighter energy codes exist; they directly increase upfront cost but can change operating comfort and energy use.
Practical Ways To Reduce The Zehnder ComfoAir 350 Price
Control scope to cut costs: reuse existing duct runs where possible, select the standard core, and install during the off-season to improve contractor availability. Obtain 3 competitive quotes and request line-item pricing for unit, ductwork, and labor to find savings of 10%-30%.
Other tactics: bundle ventilation with other HVAC work, do simple prep (clear attic access), and accept basic controls instead of premium touchscreens.
Regional Price Differences And Typical Installation Time
Labor and permit costs vary by region: expect 0%-25% lower prices in rural or Midwest markets and 10%-35% higher in major coastal metros. Typical install time is 6-12 hours for a straightforward job and 1-3 days for complex duct runs or multi-level homes.
Assumptions: crew of 2-3 technicians, standard equipment access, no emergency permits.