Multi-Family HVAC Services

HVAC Service & Repairs

At Aquinas HVAC, we specialize in comprehensive multi-family HVAC services, providing reliable comfort for residents of apartment complexes, mixed-use buildings, duplexes, small multi-unit properties, and more. We equip our technicians to handle everything from minor repairs to complete system overhauls, ensuring your systems operate efficiently.

We respond quickly to minimize downtime and keep your residents comfortable year-round. Whether you need urgent repairs or long-term energy-efficient solutions, Aquinas HVAC is your trusted partner in maintaining dependable climate control across your property.

Call us now to schedule same-day multi-family HVAC repairs

408-313-1831
Technician adjusting a smart thermostat during HVAC service in a multi-family building.
Before After

Design & Installation

Getting HVAC right in multi-family buildings isn’t just about comfort—it’s about long-term performance and lower operating costs. We design and install HVAC systems for duplexes, apartments, and mixed-use properties, focusing on efficiency and durability.

Every project starts with a detailed site assessment. We look at layout, occupancy, and energy goals before making recommendations. Our team installs high-efficiency systems using proven technology to meet today’s needs while planning for future demand. From start to finish, we handle the work with precision and minimal disruption to your tenants.

Maintenance Programs

Routine HVAC maintenance makes a difference—especially in multi-unit buildings. Our maintenance services work for property owners and managers who need a company that supports them when and where required.

We provide many services focused on keeping systems running at peak efficiency. These visits help us spot potential problems early, avoid costly repairs, and extend system life. Our goal is to keep your tenants comfortable and reduce your operating costs.

Technician performing routine HVAC maintenance with pressure gauges at a multi-family property.

Comprehensive Multi-Family HVAC

Aquinas HVAC is a full-service company, offering everything from installation to maintenance programs for multi-family properties.

Technician cleaning an air duct with a rotary brush tool.

Duct Cleaning

Improve air quality, efficiency, and overall indoor environment.

HVAC technician performing emergency repairs on an outdoor multi-family air conditioning unit.

Emergency Repairs

Emergency repairs to minimize HVAC downtime.

HVAC technician servicing a residential heat pump system for heating maintenance or repair.

Heating Services

Complete heating system installation, servicing and repair.

Technicians repairing an outdoor air conditioning unit on a commercial rooftop.

Cooling Services

Complete cooling system installation, servicing and repair.

See Our Full List of Services
Graphic illustrating energy efficiency, cost savings, and sustainability benefits of upgraded HVAC systems.

Energy Efficiency & Cost Savings

Energy costs add up fast in multi-family buildings. We help property owners cut those costs by improving HVAC efficiency without sacrificing tenant comfort. Our team looks for innovative upgrade opportunities—replacing outdated systems, enhancing existing setups, or adding smart thermostats for better control.

Even small changes can lead to measurable savings. We take a proactive approach. That means fewer breakdowns, less downtime, and more consistent performance year-round. You’ll see lower operating costs, fewer service calls, and longer system life. For owners, that translates to real value: happier tenants, more predictable expenses, and a more substantial return on investment.

Regulatory Compliance & Safety Standards

Meeting regulatory compliance and safety standards is critical for multi-family properties. Therefore, we stay current with local and state HVAC regulations to ensure your systems meet all required codes. For instance, our services include proper installation, continuous maintenance programs, and regular inspections to keep your property compliant and safe.

Additionally, we focus on safety by addressing potential issues like air quality, fire hazards, and system malfunctions before they escalate. Consequently, property owners can avoid penalties, ensure resident safety, and maintain a well-regulated environment.

HVAC technician inspecting outdoor units and completing a compliance and safety checklist at a multi-family property.
Property manager reviewing HVAC service costs and budgeting for multi-family building upgrades.

Why Multi-Family Professionals Choose Aquinas HVAC

Property managers, apartment owners, and REITs choose Aquinas HVAC for consistent service, efficient system performance, and tenant-focused solutions.

We understand the unique demands of multi-unit properties and deliver HVAC services that minimize disruptions while maximizing comfort. Our proactive approach reduces operating costs, improves system reliability, and keeps properties compliant with safety standards. With Aquinas HVAC, you get a partner who understands the pressures of property management and delivers results you can count on.

  • 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

We proudly serve multiple locations in California, including the Bay Area, San Diego, and Orange County. Contact us for exceptional HVAC services near you.

Santa Clara, CA

2273 De La Cruz Blvd.
Santa Clara, CA 95050

San Diego, CA

5046 Ruffner St
San Diego, CA 92111

Santa Ana, CA

1435 E Borchard Ave.
Santa Ana, CA 92705

  • carrier authorized dealers
  • pm tech certification
  • first company hvac provider
  • epa-approved technician
  • california contractors state license board

    • Multi-Family HVAC Experts

    Reach out to Aquinas HVAC for all your multi-family HVAC needs. Our expert team is ready to provide you with reliable, honest, and experienced service.

    Contact Us Today