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he Greenhouse-Specific High-Temp Air Source Heat Pump is a specialized steam generation system for controlled environment agriculture. It delivers high-temperature saturated steam for soil pasteurization, substrate sterilization, space heating (via heat exchangers), and bench heating. Unlike propane or natural gas heaters, this unit produces no combustion emissions pollutants that can damage sensitive crops. It runs on electricity and can be powered by renewable energy, making it a carbon-neutral heating solution. The unit also features a durable, corrosion-resistant design suitable for humid greenhouse environments. Ideal for large-scale vegetable, flower, and cannabis greenhouses seeking to reduce heating costs and comply with strict emission regulations.
All steam-contacting parts are made of high-quality stainless steel with smooth, polished surfaces. There are no dead legs, crevices, or threaded connections where bacteria can hide. The unit is CIP-ready with automatic blowdown and sanitization cycles. No boiler chemicals are used, eliminating the risk of contamination to the product or condensate.
Between crop cycles, soil-borne diseases, nematodes, and weed seeds can build up. Instead of using chemical fumigants, you can use the same heat pump to generate high-temperature steam for soil pasteurization. Steam is injected into the soil or substrate, raising the temperature enough to kill pests and pathogens without leaving chemical residues. After treatment, the soil is safe and ready for planting. This gives you a chemical-free, environmentally friendly way to maintain soil health.
This heat pump absorbs free heat from the outdoor air and upgrades it to high-temperature steam. It delivers more heat energy than the electricity it uses, saving a significant portion of energy costs compared to electric resistance heaters or propane furnaces. The unit comes with a simple control panel: set the desired temperature and the system runs automatically. You can also schedule heating times (e.g., only at night when electricity is cheaper) and monitor remotely via smartphone. No need for fuel storage, flue cleaning, or annual boiler inspections.
For a small greenhouse supplying local markets or restaurants, the compact model provides enough heat to extend the growing season by weeks in spring and autumn. Use the steam for soil sterilization once a year to eliminate disease without chemicals. The unit can be placed on a concrete pad outside the greenhouse; only steam pipes and electrical cable need to enter.
Medium-sized growers producing tomatoes, cucumbers, or peppers need reliable heat during cold nights. The medium-capacity unit can feed steam into a hot water buffer tank, which then circulates warm water through overhead pipes or under-bench heating. This provides even, gentle heat without hot spots. Remote monitoring allows you to check greenhouse temperature from home on weekends.
Large commercial greenhouses growing roses, orchids, or cannabis have strict climate requirements. Multiple high-capacity units are installed in parallel, providing both heating and steam pasteurization. The modular design ensures that if one unit needs service, the others continue heating. The control system integrates with the greenhouse climate computer, automatically adjusting output based on sensors for temperature, humidity, and CO₂ levels.
The greenhouse-specific heat pump should be installed outdoors or in a separate, well-ventilated equipment room. It requires a flat concrete pad slightly larger than the unit’s footprint. Water supply must be softened to prevent scale formation. For heating, we recommend using a steam-to-water heat exchanger and a buffer tank to distribute warm water throughout the greenhouse. For soil sterilization, additional steam injection pipes are needed. Electrical supply requires standard industrial three-phase power. The control panel can be mounted inside the greenhouse for easy access.
Yes, it is designed for cold climates. The unit can operate even when the temperature outside drops below freezing. However, like all air-source heat pumps, its maximum steam output decreases as it gets colder. To ensure enough heat on the coldest days, we size the unit with a safety margin. For extremely cold regions, we also offer a low-ambient kit that helps the unit perform better. Many greenhouse growers install the unit inside a small insulated shed to keep the air around the evaporator warmer, which improves efficiency.
Maintenance is very simple. The controller does most of the work automatically, including self-checks and periodic blowdown. Once a month, you should spray the evaporator coils with a garden hose to remove dust and dirt. A visual check of pipes for leaks is also a good habit. Once a year, call a technician to check the refrigerant levels and electrical connections. That’s about it. No chimney sweeping, no fuel tank cleaning, no burner adjustments.
The smallest model takes up about the same floor space as a large refrigerator. Larger models need more room but are still very compact compared to a boiler. You can install the unit inside the greenhouse, but keep in mind that it needs good air circulation and will produce some noise. Most growers prefer to install it outside to save growing space and avoid noise. If you must put it inside, place it near a wall with plenty of clearance for air intake.
