Our experienced team offers services for both residential and commercial properties.With over 30 years of experience in the industry, we boast all of the knowledge and expertise in repairing.
Fast, reliable HVAC repair and maintenance for San Antonio homes and businesses. LG Mechanical provides expert air conditioning service, heating repairs, and preventive maintenance backed by our Master HVAC Contractor license and 30+ years of diagnostic expertise. When your AC stops cooling during a Texas heatwave or your furnace fails during a cold snap, our certified technicians diagnose problems accurately and repair them correctly the first time—getting your San Antonio property comfortable again quickly and affordably.
Our veteran-owned company services all major HVAC brands including Carrier, Trane, Lennox, Rheem, Goodman, York, American Standard, Bryant, Daikin, and Mitsubishi. We diagnose and repair residential air conditioners, furnaces, heat pumps, ductless mini splits, and thermostats, as well as commercial rooftop units, package systems, split systems, and building HVAC controls. Our fully-stocked service vehicles carry common parts for same-day repairs, and our technicians bring decades of experience troubleshooting everything from refrigerant leaks and compressor failures to electrical problems and airflow restrictions. We provide transparent pricing before starting work—no surprises, no hidden fees, just honest service from a family-owned San Antonio company you can trust.
Beyond emergency repairs, LG Mechanical offers comprehensive preventive maintenance programs that extend equipment life, improve efficiency, prevent breakdowns, and maintain manufacturer warranty compliance. Regular HVAC maintenance is the best investment you can make in your system—catching small problems before they become expensive failures while keeping your equipment running at peak efficiency. Our maintenance programs include complete system inspections, refrigerant level checks, electrical testing, cleaning and adjustments, filter replacement, and detailed reporting for both residential and commercial properties throughout San Antonio.
Protect your HVAC investment with professional preventive maintenance from LG Mechanical. Our comprehensive tune-ups keep your San Antonio system running efficiently, prevent unexpected breakdowns, extend equipment lifespan, and maintain warranty coverage. Regular maintenance is the most cost-effective way to ensure reliable comfort year-round while avoiding expensive emergency repairs during extreme weather.
Complete System Inspection & Performance Testing
Refrigerant Level Checks & Leak Detection
Electrical Component Testing & Safety Inspection
LG Mechanical’s Master HVAC Contractor certification and 30+ years of diagnostic experience guarantee expert HVAC service on every repair call. Our veteran-owned commitment to honesty means we provide accurate diagnoses, fair pricing, and repairs that fix problems correctly the first time. We service all brands with factory-trained expertise and professional tools that diagnose issues other contractors miss.
We stand behind our HVAC repairs with comprehensive workmanship warranties and guaranteed customer satisfaction. Our transparent pricing means you know repair costs before work begins—no surprises or hidden fees. We use quality parts, professional repair techniques, and thorough testing to ensure your San Antonio HVAC system operates reliably after every service call.
LG Mechanical’s Master HVAC Contractor license represents the highest level of diagnostic and repair expertise in San Antonio. Owner Geno Anguiano brings 30+ years of hands-on troubleshooting experience to complex HVAC problems that stump other contractors. Our master-level expertise means we accurately diagnose issues the first time—using professional diagnostic tools, systematic troubleshooting procedures, and deep technical knowledge of refrigeration cycles, electrical systems, airflow dynamics, and control sequences. Many San Antonio homeowners and businesses call us after other contractors misdiagnosed their problems, wasted money on unnecessary parts, or couldn’t solve intermittent issues. Our diagnostic approach identifies root causes instead of just treating symptoms—saving you money by fixing the actual problem and preventing recurring breakdowns. We service all HVAC equipment types including older systems that many contractors refuse to work on, complex commercial installations, and high-efficiency variable-speed systems requiring advanced diagnostic skills.
LG Mechanical services and repairs all major HVAC brands serving San Antonio properties. Our technicians are factory-trained on premium brands including Carrier, Trane, Lennox, and Daikin, while also bringing extensive experience with Rheem, Goodman, York, American Standard, Bryant, Amana, Coleman, Heil, Tempstar, Mitsubishi, Fujitsu, and LG systems. This comprehensive brand expertise means we have the technical knowledge, diagnostic tools, and parts sources to repair your specific equipment regardless of manufacturer. We service both current models and older discontinued systems—even equipment other contractors claim is “too old to fix.” Our extensive parts network and relationships with HVAC suppliers throughout San Antonio mean we source quality replacement components quickly, often completing repairs the same day. Whether you have a builder-grade system, premium high-efficiency equipment, or specialized commercial HVAC, we bring the right expertise to diagnose and repair it correctly.
When your AC fails during San Antonio’s summer heat or your furnace stops working during a winter freeze, LG Mechanical responds quickly with same-day service. We understand that HVAC emergencies create safety concerns and uncomfortable conditions—especially during extreme weather when vulnerable family members, employees, or customers are affected. Our service vehicles are fully stocked with common repair parts including capacitors, contactors, thermostats, motors, fan blades, and refrigerant, allowing us to complete most repairs on the first visit without return trips. We prioritize emergency calls during heat waves and cold snaps, often providing same-day service even during peak demand periods. Our efficient diagnostic process quickly identifies problems, and our transparent pricing gives you repair costs upfront before we start work. While we don’t offer 24/7 service, we provide extended hours during extreme weather and work evenings and weekends when necessary to restore your comfort as quickly as possible.
LG Mechanical provides honest guidance about repairing versus replacing your San Antonio HVAC system. Some contractors push expensive replacements when simple repairs would solve the problem, while others recommend patching failing equipment that will break down repeatedly. Our veteran-owned integrity means we give you straightforward advice based on your specific situation—considering equipment age, repair costs, efficiency, expected remaining lifespan, and your budget. We use the “$5,000 rule” as guidance: if your system age multiplied by repair cost exceeds $5,000, replacement often makes better financial sense. For example, a $500 repair on a 12-year-old system (12 x $500 = $6,000) suggests replacement is smarter long-term investment. But we also consider other factors like recent upgrades you’ve made, whether you plan to move soon, and your comfort with repair costs. We provide both repair estimates and replacement quotes, explaining pros and cons of each option so you make informed decisions. Our goal is your long-term satisfaction, not maximizing today’s sale.
Prevent breakdowns and extend equipment life with preventive maintenance programs from LG Mechanical. Regular HVAC maintenance is the single best investment you can make in your San Antonio system—catching small problems before they cause failures, maintaining efficiency that saves on utility bills, and protecting manufacturer warranty coverage that often requires documented annual service. Our comprehensive maintenance includes complete visual inspection of all components, refrigerant level measurement and leak checks, electrical connections and amperage testing, capacitor and contactor condition assessment, blower motor and belt inspection, condenser and evaporator coil cleaning, condensate drain clearing and treatment, thermostat calibration and testing, air filter inspection and replacement, and detailed reporting of system condition with recommendations for any needed repairs. For commercial properties, we provide monthly or quarterly maintenance with detailed documentation required for building management and health departments. Our maintenance programs also include priority scheduling and discounted repair rates, ensuring you receive fast service when needed.
