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Installing a roof vent costs $450 on average, with most jobs between $240 and $600, according to Fixr's roof vent installation guide (updated January 2025). Per vent installed, box or turtle vents run $55 to $200, mushroom vents $55 to $250, turbines $65 to $250, gable vents $70 to $330, low-profile dormer vents $75 to $300, cupolas $145 to $650, electric vents $265 to $1,000 and solar vents $335 to $1,200. HomeAdvisor (June 2026) puts a ridge vent at $500 on average and $300 to $650 for most homes, and soffit intake vents at $315 to $465. A ridge vent plus soffit vents therefore comes to about $615 to $1,115. The calculator adds up the vents you need; size them first so intake and exhaust balance, and never mix two kinds of exhaust on one attic.
Fixr's roof vent installation guide (updated January 2025) puts the average job at $450, with most between $240 and $600. HomeAdvisor (updated June 2026) puts a ridge vent at $500 on average and $300–$650 for most homes, and soffit vents at $315–$465.
| Vent | Installed cost | Priced |
|---|---|---|
| Ridge vent | $300–$650 | Whole ridge |
| Soffit (intake) vents | $315–$465 | Typical job |
| Box / turtle vent (static) | $55–$200 | Per vent |
| Mushroom vent | $55–$250 | Per vent |
| Turbine (whirlybird) vent | $65–$250 | Per vent |
| Gable vent | $70–$330 | Per vent |
| Low-profile dormer vent | $75–$300 | Per vent |
| Cupola vent | $145–$650 | Per vent |
| Electric (power) roof vent | $265–$1,000 | Per vent |
| Solar-powered roof vent | $335–$1,200 | Per vent |
Code ventilation is 1 sq ft of net free area per 150 sq ft of attic, or 1 per 300 with balanced intake and exhaust, split about half and half. Exhaust vents without soffit intake do little, and two kinds of exhaust on one attic short-circuit each other.
Fixr (January 2025) puts the average at $450, with most jobs $240–$600. Per vent installed: box or turtle vents $55–$200, turbines $65–$250, gable vents $70–$330, electric vents $265–$1,000 and solar vents $335–$1,200.
HomeAdvisor (June 2026) puts ridge vent installation at about $500 on average, with most homeowners paying $300–$650. Labour is $100–$400 of that. Cutting the slot along the ridge and capping over the vent is most of the work.
About $315–$465 for a soffit vent job (HomeAdvisor, June 2026). Intake matters as much as exhaust: a ridge vent or fan without enough soffit intake does not ventilate the attic properly.
Code ventilation is 1 sq ft of net free area per 150 sq ft of attic, or 1 per 300 with a vapour retarder or balanced intake and exhaust, split about half and half. The roof vent calculator turns your attic size into a vent count.
Not on the same attic space. Two kinds of exhaust short-circuit each other: the box vent becomes an intake for the ridge vent and the soffits stop working. When a ridge vent goes in, the old box vents are normally removed and patched.
Not sure how many vents you need? The roof vent calculator turns attic area into soffit and exhaust vent counts.
Need the whole roof at once? The free roofing calculator works out roof area, squares, shingle bundles, underlayment, drip edge, ridge cap and installed cost from one set of measurements.