There are many options when it comes to commercial HVAC systems to treat a large home or commercial space. You could go with a conventional split systems, rooftop units, and water cooled geothermal heat pumps. This list will provide a good starting point for you to begin research on what unit will work best for your application.
1. Carrier WeatherExpert and WeatherMaster Packaged HVAC Systems
WeatherExpert HVAC systems have gas heat and electric cooling systems. The WeatherMaster systems are heat pumps systems. These systems come in 3- to 23-ton capacity. They use eco-friendly Puron R-410A refrigerant. They are very efficient and have IEER ratings up to 21 to meet Energy Star and CEE Tier 2 levels, producing LEED credits for efficiency. Components are factory charged and tested. The unit is engineered for simple installation and can be easily changed during installation from downflow to horizontal flow. The connections and filters are easy to access and “no strip” screws hold firm.
This unit provides three-stage cooling, as well as many other top-of-the-line features for enhanced climate control and comfort. There are more than 20 factory options available to customize the unit to your exact specifications. The WeatherMaster heat pump systems use the WeatherExpert technology to heat and cool. There is no gas furnace in this series. AC performance is reversed in winter to pull heat from outside and transfer it indoors. WeatherMaster heat pump systems are designed for regions with milder winters whereas the WeatherExpert would work best in cold climates.
2. Daikin Air Source VRV Heat Pump Systems
The VRV system was recently revamped to produce the seventh generation of this model. It features a newly patented Daikin Inverter compressor system to enhance performance, efficiency, and comfort. Its capacity ranges from 6 tons with up to 12 indoor units to 30 tons and up to 62 indoor units. It can be used with one, two, or three compressors, depending on the total capacity of the system. This model has a wide range of options. The unit can be mounted to the roof, wall, or floor, depending on the application.
3. Lennox Strategos Packaged Rooftop Units
There are two versions of this unit: gas heat with electric AC or electric heat pump for heating and cooling. It has a SEER of up to 16.1, which is very good for packaged units. This unit is Energy Star-rated. Both versions of this model are available in 3-, 5-, 10-, 20- and 24-ton models. They feature filter driers to protect the system from dirt and moisture, internal pressure switches to enhance durability, and an optional economizer for reduced energy use. Lennox Strategos Systems are built for easy installation and service. They have independent motor mounts, full-perimeter base rails, an isolated compressor compartment, and a hinged access panel. A GFCI 115V outlet is conveniently included for power tool use during installation or maintenance. Its Prodigy controller is highly rated for precision and ease of use. The unit may be used with to four compressors for staged heating and cooling.
4. Daikin McQuay Water Source Heat Pumps
Some may not be familiar with the term “water source,” which means that the heat collected indoors during cooling is “dumped” in water and kept in a well or a pond. If the unit is heating, the heat is collected from the water and transferred inside. This type of heat pump is often used in large homes, office buildings, schools, health care facilities, condos, and apartments. There are SmartSource single-stage and two-stage horizontal and vertical systems available from .75- to 6-ton capacity. The horizontal units have 0.5 to 10 tons of capacity and the vertical units go up to 25 tons. The largest units are the rooftop or curb-mounted models with 12- to 35-ton capacity. The floor-mounted systems have up to 35-ton capacity. Daikin McQuay is regarded as a global leader in HVAC innovation. These units offer very high efficiency, outstanding durability and consumer ratings that are among the best in the industry.
5. Goodman GSZ Commercial Heat Pump Split Systems
These work well in small commercial buildings where durability is essential. Goodman is a budget brand that offer quality units with great warranties. The best of these three-phase heat pump systems is the GSZ13 system that delivers 13 SEER cooling. The five-year parts warranty is better than the industry average. Features include eco-friendly R-410A refrigerant, an efficient scroll compressor, low-pressure switch to protect compression function, and a filter drier. This system is available in 3- to 5-ton capacity. The Goodman GSZ11 Series commercial heat pump is an 11 EER model that comes in sizes from 7.5 to 10 tons.Best Rated Commercial HVAC Systems