Giant HVAC, Inc

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Giant HVAC, Inc Giant HVAC is a trusted HVAC contractor with over 20 years of experience providing heating and air conditioning services.

We specialize in HVAC installations, system replacements, heat pumps, ductless mini-splits, and ductwork. Our team is known for honest recommendations, clear communication, and clean, professional workmanship that keeps homes comfortable year-round.

Upgraded the HVAC system at this short-term rental property to provide better comfort and control for guests. Installed ...
10/07/2026

Upgraded the HVAC system at this short-term rental property to provide better comfort and control for guests. Installed a new Gree FLEXX high-efficiency inverter-driven heat pump condenser, new ADP evaporator coil with Microban treatment and A2L-ready safety sensor, and a new Ecobee smart Wi-Fi thermostat.

We also installed the required electrical and supporting infrastructure for a complete, code-compliant installation, then started up and tested the system for proper operation.

This upgrade gives the homeowner a more efficient cooling system, improved comfort for guests, and convenient smart thermostat control.

We were contacted to address an issue with a failing air-conditioning unit. We skillfully removed the old model and prop...
09/11/2026

We were contacted to address an issue with a failing air-conditioning unit. We skillfully removed the old model and properly disposed of it, ensuring a seamless transition to a new, sleek, modern air-conditioning unit. We used our trustworthy Gree Flexx high efficiency inverter driven heat pump condenser for this task, boasting a slim-line design. Additionally, we replaced their outdated thermostat with a state-of-the-art Honeywell digital programmable thermostat, optimizing comfort and efficiency. We also installed an A2L ready ADP evaporator coil treated with MicroBan Antimicrobial, extending the life of the system while improving air quality. Revamped and renewed is the way to go!

08/04/2026

Our team stopped by today to help a customer who required a complete overhaul of their existing furnace and air conditioning system. They enlisted our expertise for a full replacement and an upgrade to an eco-friendlier feature, an ecobee smart thermostat. We provided efficient and timely services using top-notch products which included a Payne 80% efficient gas furnace with a new ECM motor and a Nordyne high efficiency inverter driven slim line AC condenser. The cherry on top was the EcoBee Lite Pro smart Wi-Fi thermostat which offers user-friendly controls, optimized comfort and better energy savings. The job went as planned, seeing another satisfied customer is always a pleasure.

Our team was contacted to address an outdated furnace in a home, demanding urgent replacement. We successfully removed t...
08/03/2026

Our team was contacted to address an outdated furnace in a home, demanding urgent replacement. We successfully removed the original furnace that had been installed during the home's construction and replaced it with a brand new, efficient Carrier comfort series 80% furnace. In ensuring ultimate safety and adherence to regulations, we also performed an upgrade to the gas line, bringing it up to the current code. Our commitment to maintaining the warmth and comfort of their home was fulfilled.

We initially received a call from the homeowner in need of an upgrade from an old gas furnace to a modern, energy-effici...
08/03/2026

We initially received a call from the homeowner in need of an upgrade from an old gas furnace to a modern, energy-efficient alternative. After assessing their specific needs, our course of action entailed the removal of the existing gas furnace and replacing it with a high-efficiency Carrier heat pump. We used the Carrier 19 SEER, variable speed inverter 37MUHA outdoor heat pump condenser, coupled with a 45MUHA variable speed indoor heat pump fan coil. To further boost the home's energy efficiency, we also installed an EcoBee smart Wi-Fi thermostat. This comprehensive solution not only saves the homeowner money, but also provides seamless control over their indoor climate.

Today, we were contacted by a customer needing a solution for their outdated Trane condenser. With our expertise, we rem...
07/31/2026

Today, we were contacted by a customer needing a solution for their outdated Trane condenser. With our expertise, we removed and replaced the old condenser with a top-of-the-line Carrier Infinity AC condenser, perfectly matching their existing Carrier Infinity furnace. For enhanced comfort and control, we also upgraded their thermostat with a user-friendly Infinity user interface. However, we didn't stop there. To better improve indoor air quality and efficiency, an Ultravation air purifying system, aptly named "Synergy", was installed. All these products are energy-efficient boosting our client's comfort and savings.

We were contacted by a customer in need of a comprehensive heating and cooling upgrade. To meet their needs, we removed ...
07/24/2026

We were contacted by a customer in need of a comprehensive heating and cooling upgrade. To meet their needs, we removed and replaced their old furnace, and installed a new high-efficiency air-conditioning system. By choosing the Carrier performance series 2 stage furnace and the Carrier performance variable speed heat pump condenser, we ensured optimal comfort and energy savings for the customer. To improve indoor air quality, we added an AprilAire media cabinet for a 4-inch HEPA filter. For their convenience, we installed an EcoBee smart Wi-Fi thermostat, enabling easy control over their home's temperature. We're proud to deliver customer satisfaction and transform homes into comfortable, energy-efficient spaces!

We were contacted by the customer to diagnose a problematic compressor. Recognizing its failure, the customer decided to...
06/30/2026

We were contacted by the customer to diagnose a problematic compressor. Recognizing its failure, the customer decided to upgrade their system. We installed a high efficiency, inverter-driven, variable speed, outdoor condenser by AireTemp and an ADP coil enhanced with Microban antimicrobial technology. To ensure stability, a new polar pad was laid on leveled gravel. A much needed of the disconnect box and whip was done, along with the installation of an A2L refrigerant mitigation board. We believe in providing the best options, combining efficiency, reliability, and cutting-edge technology. .

Responding to a customer's call for help during a heat wave, we swiftly performed a diagnostic on their rooftop gas pack...
06/26/2026

Responding to a customer's call for help during a heat wave, we swiftly performed a diagnostic on their rooftop gas package unit. The unit wasn't cooling, a major inconvenience given the scorching temperatures. Our trusted Fieldpiece voltmeter, Milwaukee impact driver, and typical hand tools helped us quickly pinpoint the issue. In no time, we had the unit fixed and back to optimal operation, restoring a refreshing coolness to our customer's locale. We're proud to offer prompt and effective HVAC solutions, especially during these hot summer days.

We were reached out to by a customer who was interested in exploring heating options beyond their existing gas system. I...
06/19/2026

We were reached out to by a customer who was interested in exploring heating options beyond their existing gas system. In response, we installed a high-efficiency, inverter-driven Carrier heat pump to their existing Carrier furnace. This offers a more efficient heating alternative and facilitates hybrid operation. To further enhance this setup, we replaced the existing thermostat with a Pro1 hybrid thermostat which allows for better control and management. Additionally, we also included an ADP Coil with MicronBan treatment, bi-flow thermostatic expansion valve, and A2L refrigerant for optimal function. Additions of a mitigation board and sensor ensure safe and effective systems operation. .

Address

43012 Christy Street
Fremont, CA
94538

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm
Saturday 9am - 1pm

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