Business Details
50+ Years
experience
Emergency
services
Your Trusted HVAC & Plumbing Partner in San Antonio
Since 1964, Comfort-Air Engineering and Primo Plumbing have built a legacy of excellence rooted in family values and customer-centric service. Founded by John and Robert Freund with the principle of placing customers first, our team has grown across three generations, combining deep industry expertise with cutting-edge technology. Specializing in residential and commercial HVAC systems, water heaters, plumbing solutions, and 24/7 emergency services, we prioritize integrity, transparency, and innovation in every project. Our team of certified professionals holds decades of collective experience, including NATE-certified technicians, licensed plumbers, and engineering specialists.We maintain rigorous quality standards through continuous training and adherence to industry certifications like OSHA safety protocols. As a locally owned business serving San Antonio and surrounding areas, weve earned a reputation as a trusted partner, evidenced by our five-star reviews and long-standing community relationships. Our commitment to exceptional service includes upfront pricing, satisfaction guarantees, and proactive maintenance plans designed to maximize comfort and system longevity for every client.
Services
HVAC Repair
Water Heater Installation
Emergency Plumbing
Drain Cleaning
Commercial HVAC
Pipe Replacement
Preventative Maintenance
Backflow Prevention
Sewer Line Repair
Tankless Water Heaters
Details
- Year established: 1964
Highlights and features
- Family-owned since 1964 with three generations of expertise
- 24/7 emergency services for urgent HVAC and plumbing needs
- 100% satisfaction guarantee on all installations and repairs
- Certified technicians with NATE, OSHA, and industry certifications
- Upfront pricing with no hidden fees or surprises
What people say
Same-day appointments
Technicians were professional and thorough
Transparent pricing
24/7 emergency availability
Long-term reliability
Services
HVAC Repair
Our HVAC repair services address system failures, inefficient performance, and thermostat issues for residential and commercial properties. With technicians certified by North American Technician Excellence (NATE), we diagnose problems using precision tools and restore comfort through same-day repairs. Clients benefit from energy audits, preventative maintenance plans, and 24/7 emergency support for urgent breakdowns.
Water Heater Installation
We specialize in installing tank and tankless water heaters with energy-efficient models from trusted brands. Our licensed plumbers ensure proper sizing, fuel type selection, and code-compliant installations. Customers receive lifetime support, including annual flushes and priority service scheduling to maximize system longevity and performance.
Emergency Plumbing
Available around-the-clock, our emergency plumbing service resolves burst pipes, sewage backups, and major leaks with rapid response times. Certified specialists use sewer cameras and leak detection equipment to minimize property damage. Clients access immediate dispatch options through dedicated emergency lines for critical plumbing failures.
Drain Cleaning
Professional drain cleaning services eliminate stubborn clogs using hydro-jetting and motorized drain snakes. Our team addresses household and commercial drainage issues caused by grease accumulation, tree root intrusion, and debris buildup. Regular maintenance plans prevent recurring blockages while preserving pipe integrity through chemical-free solutions.
Commercial HVAC
Custom commercial HVAC solutions include system design, installation, and maintenance for office buildings, retail spaces, and industrial facilities. Engineers focus on energy efficiency, zoning systems, and preventive care contracts. Businesses benefit from 24/7 support, equipment lifecycle analysis, and rebate programs for qualifying upgrades.
People
Patrick Freund
Principal
Patrick Freund oversees sales, marketing, and plumbing operations at Comfort-Air Engineering and Primo Plumbing. With prior experience at Frito-Lay and Ozarka Water, he brings strategic leadership to HVAC and plumbing services while maintaining his role as Responsible Master Plumber for Primo Plumbing.
Tom Freund
Principal
Tom Freund contributes comprehensive expertise across accounting, operations, and sales at Comfort-Air Engineering. Recognized as the organization's versatile problem-solver, he works with third-generation team members to optimize business performance while balancing a passion for Texas Longhorns athletics.
Clint Wurzbach
Principal
Clint Wurzbach serves as President and licensed engineer at Comfort-Air Engineering, leading technical operations since joining the family business in 2010. His engineering background from Texas Tech University supports complex project execution while maintaining family legacy values established over seven decades.
Mike Stahl
VP, Technology
Mike Stahl directs IT management and technology operations after progressing from field technician to executive leadership. His 33-year career includes managing construction operations for both HVAC and plumbing divisions while implementing cybersecurity measures and fleet optimization systems.
Joshua Freund
Financial Analyst
Joshua Freund provides financial analysis and performance reporting as a third-generation contributor to Freund Enterprises. His MBA in Finance from Dallas Baptist University supports strategic decision-making across departments while continuing family involvement in this San Antonio-based business.
Questions
How do I know if my water heater needs replacement?
Check for leaking tanks, rusty water, reduced hot water supply, or energy bills exceeding $150 monthly for standard units.
What plumbing services qualify for emergency response?
Burst pipes, sewer backups, complete loss of water, and gas line leaks receive priority emergency treatment with 24/7 availability.
Do you offer financing options for HVAC installations?
Yes, we provide flexible financing plans with monthly payments starting at $79 for qualifying replacements and new installations.
What maintenance plans protect plumbing systems?
The Plumbing Diamond Plan includes annual water heater flushes, pressure testing, visual inspections, and VIP pricing on repairs.
How quickly can drain cleaning services be scheduled?
Standard appointments occur within two business days, with urgent clogs eligible for same-day service during regular operating hours.
Are tankless water heaters better than traditional models?
Tankless systems offer 20-30% energy savings and continuous hot water but require higher upfront investment compared to storage tank alternatives.
Reviews (5)
Kathy Severyns
Apr 14, 2022
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The workers that provided this service were neat and careful about things we had requested because we have pets. They were early to work, they were busy the whole time and they knew what they were doing. Excellent job! Service: HVAC duct & vent installation
Rindy Saunders
Mar 28, 2022
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The young man who came and serviced our heater was excellent. He was very thorough and communicated with us at every step. Will definitely be my go to guys. Services: Heating system maintenance, Heating system repair
Nicole Langston
Mar 26, 2022
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We were very pleased with the crew that came to our house to work on installing toilets and several other things for us - the guys worked quickly and were very professional and knowledgable, we will definitely use them again in the future! 10/10 Services: Water heater installation, Plumbing leak detection, Toilet installation
Gracia Marshall
Mar 10, 2022
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Responded to our call same day. Able to come by 4 hours earlier that originally indicated. Technician was very knowledgeable, explained everything, showed me the problem, explained the pricing, and completed the work. I couldn't ask for anything more. Great job!
Paul Chapman
Jan 15, 2022
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I have trusted Comfort-Air with maintaining my home HVAC system at peak performance for many years. They have never disappointed me. I get a (1) Fall and (2) Spring check every year to ensure my system is ready for the colder and hotter weather seasons. I would highly recommend Comfort-Air to maintain and service your home HVAC system.
