Professional HVAC Solutions

Expert Lennox Repair & VRF Technology

At Thermo Cooling Inc., we don't just fix units; we optimize your entire living environment. Our NATE-certified technicians specialize in the brands you trust and the technology of the future. By focusing on precision diagnostics and energy efficiency, we provide solutions that lower your utility bills while maximizing comfort. From residential ductwork to commercial VRF configurations, we handle every project with professional integrity.

HVAC technician near an air conditioning unit outside a brick house. Sunny day.

Our HVAC Services

Person in black shirt and cap cleaning air conditioner filter on white wall.

Air Conditioning Services

Southern California summers demand an air conditioning system that operates at peak performance without skyrocketing your utility bills. Our comprehensive cooling services focus on the technical integrity of your unit’s internal components. We don't just "top off" fluids; we perform deep-system diagnostics to ensure your compressor, coils, and electrical relays are synchronized for maximum SEER efficiency. From the smallest residential unit to high-capacity central air systems, we provide Glendale with reliable, frost-free comfort.


  • AC Installation: Precision mounting, professional duct integration, and manufacturer-spec charging for new, high-efficiency condensers.
  • Compressor Repair: Expert internal diagnostics and component replacement to restore your system’s "heart" without a full unit replacement.
  • Refrigerant Recharging: Environmentally compliant leak detection and EPA-certified recharging to ensure optimal heat exchange levels.
  • Condenser Cleaning: Deep-cleansing of outdoor coils to prevent airflow restriction and high-pressure system failures.


Man in black cap repairing an AC unit. He's working with wires and using tools outside.

Heating & Furnace Care

When the temperature drops, your furnace becomes the most critical safety system in your home. As Lennox Repair Specialists, we are uniquely trained to interpret complex diagnostic codes and ignition sequences specific to the Lennox product line. We prioritize heat exchanger integrity and carbon monoxide safety, ensuring that your gas or electric heating system is not only warm but 100% safe for your family. Our "More Coverage" philosophy means we inspect every sensor and safety switch to prevent middle-of-the-night breakdowns.


  • Furnace Repair: Rapid intervention for blower motor failures, cracked heat exchangers, and Lennox-specific electronic ignition issues.
  • Heat Pump Installation: Transitioning your home to dual-fuel or all-electric heating for superior year-round energy savings.
  • Seasonal Tune-ups: A rigorous 20-point inspection covering burners, flues, and filters to prepare your system for the winter.
  • Ignition Maintenance: Cleaning and calibrating flame sensors and hot-surface igniters to ensure a reliable start every time.


Advanced VRF Systems

Variable Refrigerant Flow (VRF) technology represents the highest tier of modern HVAC engineering. Unlike traditional systems that are either "on" or "off," VRF systems use inverter-driven compressors to deliver the precise amount of refrigerant needed to each individual zone. This allows for simultaneous heating and cooling in different areas of a building—a game-changer for Glendale businesses and luxury multi-zone residences. Our team is specifically trained in Mitsubishi Electric and Daikin VRF platforms, providing the technical expertise required for these sophisticated, high-efficiency systems.


  • VRF System Installation: Expert layout and installation of trunk-and-branch piping for multi-zone commercial and residential projects.
  • Variable Flow Maintenance: Using digital diagnostic tools to calibrate refrigerant flow rates across multiple indoor heads.
  • Multi-Zone Configuration: Custom programming of centralized controllers to manage diverse temperature needs across large properties.
  • Heat Recovery Service: Specialized maintenance of heat recovery boxes that allow for simultaneous heating and cooling via energy redistribution.


An air conditioning unit sits next to a brick house and a window.

Mini-Split Systems

Ductless mini-split systems are the perfect solution for Glendale homes with architectural limitations or for homeowners who want granular control over individual rooms. These systems utilize inverter technology to provide whisper-quiet operation and incredible energy efficiency. Because they don't rely on ducts, they eliminate the energy losses associated with traditional central air. We specialize in sleek, wall-mounted and floor-mounted installations that blend seamlessly with your interior design while providing powerful, targeted comfort.


  • Ductless Installation: Fast, non-invasive mounting of indoor units and slim-line outdoor condensers for any room or garage.
  • Inverter Tech Service: Expert repair and maintenance of variable-speed compressors that make mini-splits so energy-efficient.
  • Wall-Mount Maintenance: Routine cleaning of reusable filters and drainage lines to prevent indoor humidity and "dirty sock" odors.
  • Seasonal Cleaning: Deep-cleaning of the indoor evaporator coils to maintain high-velocity airflow and cooling capacity.


Ductwork & Air Quality

Your HVAC system is only as good as the air it moves. Leaky, dirty ductwork is the leading cause of "hot spots" and poor indoor air quality. We treat your ventilation system as a precision-engineered highway for air. By sealing leaks and removing years of accumulated dust and allergens, we reduce the strain on your equipment and ensure every room receives the exact CFM (Cubic Feet per Minute) of air it was designed for. Breathe easier knowing your air is filtered and your energy isn't being wasted in your attic or crawlspace.


  • Duct Cleaning: Mechanical removal of particulates, pet dander, and allergens using high-HEPA vacuum extraction.
  • Airflow Optimization: Balancing dampers and registers to ensure even temperature distribution throughout your entire home or office.
  • Duct Sealing: Using advanced mastics and seals to eliminate the 20-30% of energy loss typically found in residential ductwork.
  • Ventilation Repair: Structural fixes for disconnected, crushed, or undersized ducts that inhibit your system’s performance.