HVAC Installation for Commercial & Multi-Family Properties

At Aquinas HVAC, we specialize in commercial HVAC installation across Southern California. Whether you’re building out a new space or upgrading outdated equipment, our team delivers solutions that meet the demands of your property, tenants, and usage.

Our focus is 100% commercial and multi-family HVAC. That means we understand how to deliver HVAC systems that align with your business needs, building requirements, and long-term performance goals.

Call us today for all your HVAC needs

408-313-1831

Commercial HVAC condenser units installed outside a red brick multi-family building with electrical connections.

Expert HVAC Installation for Commercial Properties

Aquinas HVAC has extensive experience with commercial-grade HVAC systems across Southern California. From rooftop units on retail centers to wall-mounted heat pumps in office suites, our team installs systems built for performance, efficiency, and long-term reliability.

We understand that every commercial building is different. That’s why we match the system type and size to your property’s layout, usage, and comfort requirements. We take into account variables such as occupancy patterns, zoning needs, interior layout, and ventilation goals to help ensure year-round system performance. Whether your building needs targeted climate control for multiple suites or consistent airflow across a large open space, we install solutions that are both practical and scalable.

Our team works directly with property owners, facility managers, and general contractors to support new construction, tenant improvements, and system upgrades and retrofits. Every recommendation we make is grounded in proven system performance, not guesswork.

Systems We Install

We install a range of HVAC systems tailored to commercial use:

Rooftop Units

Packaged systems mounted on flat roofs. Ideal for retail and open commercial spaces.

Split Systems

Versatile and scalable. Useful for both interior offices and multi-suite properties.

Ductless Mini-Splits

A good fit for buildings with limited ductwork or where zoning flexibility is needed.

Commercial Heat Pumps

Efficient solutions that provide both heating and cooling in moderate climates.

Ventilation & Air Handling Units

Supports indoor air quality, air exchange, and filtration beyond basic comfort control.

Designed for Commercial Buildings

Commercial HVAC systems must do more than just heat and cool. They have to handle large spaces, operate efficiently under varying loads, and comply with local codes and ventilation standards.

We install HVAC systems for:

Each installation is customized to the property’s structure, usage patterns, and cooling/heating demands.

Multi-Family and Mixed-Use Projects

In addition to commercial work, Aquinas HVAC also installs systems for multi-family properties, including:

Our technicians are familiar with zoning requirements, shared walls, and the unique challenges of HVAC in tenant-occupied spaces.

Pricing is Consistent and Fair
I manage a large apartment complex and have been very happy with the service we have received from Aquinas and our rep Eric. The communication is great and techs always arrive when they are scheduled. Pricing is consistent and fair. We look forward to continuing to work with them.
Kelly W.
Very Professional and Respectful
Lane and his team are amazing. Always quick to answer and schedule right away. None of my residents have issues when they service an occupied unit. They are very professional and respectful. If you need your HVAC system serviced you can always count on them.
Jose L.
Lightning Fast Response Time
I’ve been working with an Aquinas HVAC for a while now, and they have been amazing! Eric is always on it with excellent communication, lightning fast response time and just overall amazing customer service. Highly recommend.
Jesus P.
Install Quality is Consistently Outstanding
I am the service manager for a 756 unit apartment complex. They have replaced over 7 new HVAC systems and completed multiple service calls with no issues. The install quality is consistently outstanding, exceeding my expectations every time. Their customer service is second to none.
Chaian R.
Nothing but Positive Experiences
I’ve been using Aquinas for about 4 years now and have nothing but positive experiences with them. They have replaced over 30 full HVAC systems at my property and are very responsive when it comes to scheduling. I would definitely recommend Aquinas for any of your HVAC needs.
Tony V.
Smooth and Stress-Free
I recently had the pleasure of working with Aquinas HVAC to install AC system at my house, and I cannot express how impressed I am with their service. From start to finish, the team at Aquinas HVAC made the entire experience smooth and stress-free.
Trevor J.
Quality Service and Customer Satisfaction
Aquinas for the W. Lane and the team has come through for us on so many occasions. They share the same pillars of excellence we strive for with quality service and customer satisfaction. Their technicians are very knowledgeable and great with communication.
Jamaal E.
Excellent Customer Service and Follow Up
I have been working with Aquinas for a few years now and they have been excellent! Excellent customer service and my personal favorite follow up! The techs are great and always show up on time. I’ve used them for multiple projects and have been happy with the work every time. Highly recommend.
Anthony M.
Installed ASAP and at a Great Price
I have to give a huge shout-out to Eric at the San Diego office for always going above and beyond for us. Since the start of summer, I have had 6 ACs go out and some angry residents but Eric came thru and got them installed asap and at a great price! Thanks so much, Eric!!
Kristine S.
Quick to Respond to Our Residents
Really love working with this company. We use them here at Laurel Park. They are always quick to respond to our residents. Eric specifically has been out many times, He is very knowledgeable, good with the residents and get the job done quick and efficiently. ten out of ten recommended
Samantha S.
Polite, Clean, and Punctual.
I’ve worked with Aquinas HVAC on multiple projects They are always polite, clean and punctual and offered great service Shout out to Eric for always being on top of it. Thanks
David F.
Very Responsive, Great Communication.
Eric and Danny have been very helpful since my residential apartment complex began using them over a year ago. Very responsive, great communication – I highly recommend their services!
Vicki W.

Satisfied Clients

Our commitment to excellent service and quality workmanship has earned us rave reviews.

Our Locations

Aquinas HVAC operates from multiple California locations to support commercial and multi-family properties throughout the Bay Area, San Diego County, and Orange County.