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Business Details
42 Years
experience
Emergency
services
Trusted HVAC Services in Oxnard, CA
Since 1984, West Coast has been a trusted leader in commercial and residential HVAC solutions. Our team of over 150 dedicated employees, supported by 55 service vehicles, delivers fast, reliable service across Ventura and Santa Barbara Counties. As a NATE Quality Circle Contractor with more than 80% of our technicians NATE-certified, we combine technical expertise with a commitment to customer satisfaction. Our partnerships with industry leaders like Carrier, Lennox, and Mitsubishi ensure we service top-tier equipment with precision. We expanded into residential services after decades of commercial success, maintaining the same high standards that have defined our reputation.

Our technicians receive specialized training from 15 equipment manufacturers, enabling expert diagnostics and installations. We prioritize transparency, offering free in-person estimates and fair pricing tailored to client needs. With 24/7 emergency response capabilities, we guarantee rapid assistance for critical HVAC issues. Our focus on energy-efficient systems helps clients reduce costs while maintaining comfort. Celebrating 40 years in business, we remain dedicated to innovation, ethical practices, and community service, ensuring long-term relationships built on trust and excellence.
Services
AC Replacement Heater Installation Emergency HVAC Ductless Mini-Split Systems Indoor Air Quality Commercial HVAC Maintenance Heat Pump Installation VRF Systems Tenant Improvements Energy Management Systems
Details
  • Year established: 1984
Highlights and features
  • We offer 24/7 emergency HVAC services with rapid response times.
  • Our team includes over 150 NATE-certified technicians with specialized training.
  • We provide free in-person estimates for all installation projects.
  • We maintain a fleet of 55 service vehicles for fast local support.
  • Our technicians are trained by 15 major HVAC equipment manufacturers.
Associations and certifications
  • NATE Quality Circle Contractor
  • Carrier Factory Authorized Dealer
What people say
Changed our lives Transparent and professional Works miracles Saved us $2100 Excellent customer service
Services
Commercial HVAC
We design, install, and maintain HVAC systems for commercial buildings, ensuring optimal comfort and efficiency. Our NATE-certified technicians handle complex systems from major brands like Carrier and Trane. With 40 years of experience, we provide emergency repairs, energy audits, and customized solutions for businesses in Ventura and Santa Barbara Counties.
Residential HVAC
Our residential HVAC services include AC replacement, heater installation, and maintenance for homeowners. We use top-rated equipment from brands like Mitsubishi and Lennox to ensure reliable performance. With 24/7 emergency service and free in-home estimates, we help families maintain comfortable living environments year-round across Southern California.
Emergency HVAC
We provide rapid-response HVAC repairs for urgent issues like system failures during extreme weather. Our fleet of 55 service vehicles ensures quick arrival times. Available 24 hours a day, our technicians resolve critical heating and cooling problems for both residential and commercial clients across our service areas.
Ductless Mini-Split Systems
We install and service ductless mini-split systems for homes and businesses without existing ductwork. These energy-efficient systems allow precise temperature control in specific areas. Our technicians are factory-trained to handle brands like Mitsubishi, ensuring proper installation and optimal performance for clients in Ventura County and beyond.
Indoor Air Quality
We improve indoor air quality through advanced purification systems, air filtration, and humidity control solutions. Our services address allergens, pollutants, and moisture issues in both residential and commercial settings. Using industry-leading technology, we create healthier environments while maintaining HVAC system efficiency.
People
Brian Haase
President
Brian Haase leads West Coast with 40 years of HVAC industry experience. He oversees operations and strategic growth while maintaining the company's founding commitment to quality service and customer satisfaction across commercial and residential sectors.
Justin Haase
Chief Financial Officer
Justin Haase manages financial operations at West Coast. With deep industry knowledge, he ensures responsible financial stewardship while supporting the company's expansion into residential services and continued dominance in commercial HVAC markets.
Melissa Figueroa
Office Manager
Melissa Figueroa coordinates office operations at West Coast. She manages administrative teams and client communications, ensuring smooth day-to-day operations for the 150+ employee company serving Southern California communities.
Michelle Acosta
Administrative Assistant
Michelle Acosta provides essential administrative support at West Coast. She assists with client scheduling, documentation, and internal communications, contributing to the company's efficient service delivery across its 55-vehicle fleet.
Jeremy Carlton
Commercial Service Manager
Jeremy Carlton leads commercial service operations at West Coast. He manages technician teams and client relationships for business HVAC solutions, leveraging extensive industry experience to maintain the company's reputation for excellence in Ventura and Santa Barbara Counties.
Questions
What HVAC services do you offer for residential customers?
We provide complete residential HVAC services including AC replacement, heater installation, heat pump systems, and emergency repairs. Our NATE-certified technicians install and service top brands like Carrier and Mitsubishi.
Are you available for emergency HVAC repairs?
Yes, we offer 24/7 emergency HVAC service with rapid response times. Our fleet of 55 service vehicles ensures quick arrival for urgent heating and cooling issues.
Do you provide financing options for HVAC installations?
We offer financing through Synchrony Financial for qualifying customers. This helps make essential HVAC upgrades more affordable while maintaining home comfort.
What areas do you serve?
We serve Ventura County, Santa Barbara County, San Fernando Valley, and West Los Angeles areas including Oxnard, Camarillo, Simi Valley, and Thousand Oaks.
How quickly can you install a new HVAC system?
Our experienced crews typically complete residential installations in one day. Commercial projects vary by complexity but we prioritize efficient execution with minimal business disruption.
What HVAC maintenance plans do you offer?
We provide customized maintenance agreements for both residential and commercial clients. These plans include regular inspections, priority service scheduling, and discounts on repairs to ensure system longevity.
Reviews (4)
Dirk Duffner
Apr 02, 2022 Report
Nick was awesome. He was able to troubleshoot a problem that had evaded two other companies. Crossed power lines to two adjacent compressor/condensers serving two different condominiums. Services: Installation, HVAC system repair
Geri Ana Segovia
Feb 20, 2022 Report
We can't thank West Coast Air Conditioning enough for their genuine kindness, truthfulness, good service and the simple explanation of the steps to replace our aging AC, Furnace and duct work! Letti was amazing to work with and what a great install team Art and Sal, they were so respectful and did an excellent job installing, cleaning up and going over the new system they just replaced in our home! They should be the 1st Company you call if you are in the market for an AC and Heating unit or just need service!
Ann Ryan
Jan 30, 2022 Report
Hysteria set in when my ancient furnace gave up.remembered seeing west coast trucks at the H4H, habitat for humanity site in port hueneme.since found they have been volunteering for 10 years. it was with confidence i called.met with nick, a proud 24 yr. veteran with the u.s. navy.and was in my senior age group.compassionate, knowledgeable and reassuring.sent gary the next morning.in a few hours i had a new furnace.saw two employees who excel in every area of their craft.and then some. what a wonderful experience.
Robert Kuecks
Dec 07, 2021 Report
Extremely happy with my experience with West Coast Air Conditioning. Leti not only provided exceptionally fast and courteous service but she also steered us to a less expensive but better solution for our heating needs. Our house did not have the duct size or the vent space to support the size of the heater that was installed as part of an addition. Instead of just replacing what was there, Leti explained why a smaller (and less expensive) unit was the better option.

After also recommending changes to improve the intake vents, we have a new heater that works great and actually much better than the larger old one. Art and Jesus did a great job installing the new heater which is clearly much more professionally done than the unit that was replaced. They took great care to protect the house and left everything cleaner than when they started. I highly recommend West Coast Air Conditioning and ask for Leti, Art, and Jesus.