7 Commercial HVAC Contractors in Westlake Village, CA
Top-Rated Commercial HVAC Contractors in Westlake Village
Johnstone Supply
“Among 7 detailed reviews, 4 rate 1 star citing return policy frustrations and restricted public access, while 3 rate 5 stars praising staff professionalism and…”
All Commercial HVAC Contractors (7 total)
Commercial HVAC Costs in Westlake Village
Commercial system pricing in Westlake Village. Actual costs vary significantly by building size and system type. Request a site-specific quote.
| Service | Low | Average | High |
|---|---|---|---|
Annual maintenance (per rooftop unit) Quarterly inspections | $475 | $950 | $1,900 |
Annual contract (small business, < 5K sqft) | $950 | $2,375 | $4,750 |
Annual contract (mid-size, 5K-25K sqft) | $3,325 | $6,175 | $9,500 |
Basic rooftop unit replacement | $6,175 | $9,500 | $14,250 |
Small business full system (< 5K sqft) | $7,600 | $15,200 | $23,750 |
Mid-size building (5K-25K sqft) | $23,750 | $47,500 | $76,000 |
Operating cost (per sqft annually) Utility + maintenance | $2 | $4 | $6 |
Prices reflect Pacific coast metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
Commercial HVAC in Westlake Village, CA: What to Expect
Westlake Village sits in the Conejo Valley of Ventura County, east of Thousand Oaks along the Pacific coast. The ocean moderates summer highs around 89 F with low humidity, while winter lows stay near 38 F. This temperate balance creates year-round commercial HVAC demand in Westlake Village, where eight contractors serve the area with a 2.2 average rating across 968 reviews. The region sees moderate cooling demand from July through September and light heating needs from December through February.
Annual maintenance for a single rooftop unit ranges from $475 to $1,900, while small business contracts under 5,000 square feet run between $950 and $4,750. Mid-size facilities between 5,000 and 25,000 square feet typically cost $3,325 to $9,500 annually. These price variations reflect system complexity, equipment specifications, and service coverage. California law requires HVAC contractors to hold a C-20 Warm-Air Heating, Ventilating, and Air-Conditioning Contractor license from the CSLB.
The customer feedback tells a split story. iPermit draws consistent praise with a 5.0 rating, and every reviewer names a specific technician, with Joseph appearing in four accounts. Macallan Air Conditioning and Heating earns mentions for same-day or immediate response. Johnstone Supply shows mixed sentiment: some customers note return policy frustrations and restricted public access, while others cite staff professionalism and store cleanliness.