Dedicated Outdoor Air System cost varies widely by system size, ERV/HRV choice, installation complexity, and region. Buyers typically pay from a few thousand for a small residential unit to tens of thousands for large commercial DOAS installations, with key drivers including CFM, energy recovery type, and ductwork scope.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Residential DOAS (single zone) | $1,800 | $4,500 | $9,500 | Includes unit, basic duct tie-in; Assumptions: 1,000-2,500 CFM-equivalent, easy access. |
| Light Commercial DOAS (small office) | $6,000 | $18,000 | $40,000 | Includes ERV, controls, 500-2,000 CFM; Assumptions: suburban labor, mid-grade materials. |
| Full Commercial Rooftop DOAS | $15,000 | $45,000 | $120,000 | Includes large rooftop unit, controls, rooftop curb, extensive ductwork. |
Content Navigation
- Typical Total Price For A Residential Or Small Commercial DOAS
- Breaking Down The Quote: Materials, Labor, Equipment, Permits
- How System Size, CFM Rating, And ERV/HRV Choice Change The Price
- Practical Ways To Lower A Dedicated Outdoor Air System Price
- Regional Price Differences: Urban, Suburban, And High-Cost States
- Labor Time, Crew Size, And Common Hourly Rates Buyers Should Expect
- Three Real-World Quote Examples With Specs And Totals
Typical Total Price For A Residential Or Small Commercial DOAS
Small residential or single-zone DOAS units typically cost $1,800-$9,500 total; mid-size commercial installs run $6,000-$40,000; large rooftop systems cost $15,000-$120,000 depending on capacity and accessories. Average installed price for most U.S. buyers lands in the $4,500-$45,000 range depending on building type and CFM.
Assumptions: Midwest labor rates, standard ERV, normal access, no major structural work.
Breaking Down The Quote: Materials, Labor, Equipment, Permits
Most DOAS quotes separate hard costs into equipment, materials, and labor plus permit and disposal fees; controls and rooftop accessories are common add-ons. Expect equipment to be 35%-60% of the installed price on residential jobs and 40%-70% on commercial projects.
| Materials | Labor | Equipment | Permits | Delivery/Disposal |
|---|---|---|---|---|
| $300-$4,000 (duct, fittings, insulation) | $750-$12,000 (installation) | $1,200-$80,000 (unit, ERV/HRV) | $50-$3,000 (local) | $50-$1,200 (removal, curb) |
How System Size, CFM Rating, And ERV/HRV Choice Change The Price
Price scales with CFM: small 200-500 CFM residential units: $1,800-$6,000; 500-2,000 CFM light commercial: $6,000-$30,000; above 2,000 CFM rooftop systems: $20,000-$120,000. Choosing an energy recovery ventilator (ERV) over a simple intake typically adds $800-$6,000 depending on capacity.
Other numeric thresholds: SEER/efficiency upgrades usually add $300-$2,000; higher static pressure runs requiring larger fans add $400-$3,000.
Call 888-896-7031 for Free Local HVAC Quotes – Compare and Save Today!
Practical Ways To Lower A Dedicated Outdoor Air System Price
Controlling scope and timing reduces cost: limit duct rerouting, choose standard ERV sizes, accept factory-mounted controls rather than custom BAS integration, and schedule work off-peak. Bundling a DOAS with a scheduled HVAC replacement can reduce combined labor by 15%-25%.
Buyers can also obtain multiple written quotes, provide clear access/clean staging areas, and avoid last-minute change orders to keep contingency fees low.
Regional Price Differences: Urban, Suburban, And High-Cost States
Expect 10%-35% cost increases in high-cost states (CA, NY, MA) and 5%-15% decreases in lower-cost Midwest and rural areas. Example delta: a $18,000 mid-size DOAS in the Midwest may cost $21,600-$24,300 in a coastal metro area.
| Region | Typical Delta vs. National Avg | Example Mid-Size DOAS |
|---|---|---|
| High-cost metro | +15%-35% | $20,700-$24,300 |
| National average | 0% | $18,000 |
| Lower-cost Midwest/rural | -5%-15% | $15,300-$17,100 |
Labor Time, Crew Size, And Common Hourly Rates Buyers Should Expect
Labor time ranges from 4-12 hours for simple residential installs to 40-200+ hours for complex commercial rooftop systems. Typical labor rates: $75-$125 per hour for HVAC technicians; specialty rigging or crane work can be $150-$300 per hour.
Typical crew sizes: 1-2 techs for residential, 3-6 for commercial rooftop jobs; add rigging crew if rooftop set is required.
Three Real-World Quote Examples With Specs And Totals
Example quotes illustrate realistic scope, pricing, and unit choices. These examples show how capacity, ductwork, and ERV selection drive final totals.
Call 888-896-7031 for Free Local HVAC Quotes – Compare and Save Today!
Tips for Getting the Best HVAC Prices
- Prioritize Quality Over Cost
The most critical factor in any HVAC project is the quality of the installation. Don’t compromise on contractor expertise just to save money. - Check for Rebates
Always research current rebates and incentives — they can significantly reduce your overall cost. - Compare Multiple Quotes
Request at least three estimates before making your choice. You can click here to get three free quotes from local professionals. These quotes include available rebates and tax credits and automatically exclude unqualified contractors. - Negotiate Smartly
Once you've chosen a contractor, use the proven strategies from our guide — How Homeowners Can Negotiate with HVAC Dealers — to get the best possible final price.
| Scenario | Specs | Labor Hours | Price |
|---|---|---|---|
| Small Home Ventilation | 300 CFM DOAS, inline ERV, minor duct tie-in | 6 hours | $2,200-$4,500 |
| Small Office Upgrade | 1,200 CFM DOAS with ERV, new controls, duct extensions | 40 hours | $12,000-$22,000 |
| Retail Rooftop System | 3,500 CFM rooftop DOAS, curb, crane, BMS integration | 120+ hours | $55,000-$110,000 |