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Claim This BusinessAbout Greencat, Inc.
Greencat, Inc. operates as a home performance contractor in Los Angeles, California, holding multiple contractor licenses that enable the company to tackle projects spanning insulation, HVAC, electrical, and plumbing under one roof. With 385 verified client reviews earning a near-perfect 4.9-star average, Greencat has built a track record serving homeowners throughout the Los Angeles metro area who need coordinated upgrades rather than isolated repairs. The company positions itself on building science principles, customizing solutions room by room and home by home rather than applying one-size-fits-all fixes.
What distinguishes Greencat is its breadth of certifications and multi-trade licensing, allowing one crew to seal ductwork, upgrade insulation, replace a water heater, and install an EV charging station without coordinating separate subcontractors. The company specializes in whole-home weatherization, emphasizing that attic air sealing combined with modern insulation delivers measurable reductions in heating and cooling waste. Their website references utility rebate programs available through Southern California Edison and SoCalGas for qualifying efficiency upgrades, providing homeowners with financial incentives beyond the immediate comfort gains.
Customer reviews repeatedly name technicians who arrive prepared and explain the work as it progresses. L B praised Tony and Sam for replacing her HVAC system, installing a whole house fan, swapping light bulbs, and fitting new shower heads during a single visit, noting every room performed better than when she originally purchased the home. Ana Romero highlighted Tony and Sam again for their professionalism while installing a water heater, repairing ducting, and adding attic insulation, describing how the crew walked her through each piece of equipment mid-installation. Samuel Sandoval earned commendation from Maria Oropeza for arriving on schedule, answering detailed questions about her new water heater, and assisting with getting the unit app-connected.
Reviewers consistently note Greencat crews communicate clearly and leave workspaces tidy, with multiple five-star reviews specifically calling out courteous behavior and proactive updates during multi-hour projects.
What Customers Say
Every review across the dataset awards 5 stars, with 4 of 8 named reviews highlighting multi-trade capability, mentioning HVAC replacement paired with insulation, plumbing, or electrical work completed by a single two-person team. Negative feedback is absent; even the single reviewer whose showerhead leaked initially received a resolution within three days, updating their rating accordingly.
Services
Attic Insulation & Air Sealing
Upgrades existing attic insulation and seals gaps driving conditioned air loss, directly improving HVAC efficiency and reducing hot or cold spots throughout the home.
Spray Foam Insulation
Closed-cell spray foam applied to rim joists, crawl spaces, or walls provides a higher R-value per inch than traditional batts while acting as a moisture barrier.
Duct Replacement & Sealing
Air duct replacement eliminates sagging or crushed flex duct, while sealing addresses leaks at connections and boots to restore designed airflow delivery.
Mini-Split Heat Pump Systems
Ductless mini-split installation provides targeted zone cooling and heating without the energy losses associated with long duct runs in older Los Angeles homes.
Whole House Fan Installation
Quietcool whole house fans pull cooler evening air through living spaces, flushing heat buildup and reducing reliance on compressor-based cooling during spring and fall months.
Electric Panel Upgrades & EV Chargers
Licensed electricians upgrade residential panels to accommodate modern loads and install Level 2 car charging stations for overnight vehicle charging.
Water Heater Replacement
Conventional, tankless, and heat pump water heater installation with plumbing crews who connect gas lines, venting, and smart monitoring apps on completion.