# Tongyi: China Heat Pumps > Experience exceptional comfort with our global air water heat pump solution\. Revolutionize your space heating for a more efficient future\. Generated by Yoast SEO v28.5, this is an llms.txt file, meant for consumption by LLMs. ## Pages - [Heat Pump Refrigerant R290](https://tongyiheatpump.com/competitive-advantages/r32-r290/) - [Air to Water Heat Pump Technology • DC Inverter EVI](https://tongyiheatpump.com/competitive-advantages/evi/) - [About us \- Heat Pump China Manufacturer](https://tongyiheatpump.com/about-us-heat-pump-china-manufacturer/) - [Heat Pump Silent Mode](https://tongyiheatpump.com/competitive-advantages/silence/) - [Heat Pump Remote Control](https://tongyiheatpump.com/competitive-advantages/smart-control-wifi/) ## Posts - [Heat Pump Not Heating Enough? 5 Common Causes](https://tongyiheatpump.com/5-reasons-your-heat-pump-is-not-heating-efficiently/) - [Do Heat Pumps Need a Buffer Tank? When It Helps — and When It Doesn't](https://tongyiheatpump.com/do-heat-pumps-need-a-buffer-tank/) - [R290 GWP Explained: Why Propane Is Changing Heat Pumps](https://tongyiheatpump.com/r290-gwp-propane-heat-pump-refrigerant/) - [\#TechFriday \| R290 Heat Pump Efficiency in Cold Season: The Tongyi Advantage](https://tongyiheatpump.com/fridaytech-r290-heat-pump-efficiency-in-cold-season-the-tongyi-advantage/) - [Solar, Battery \& Heat Pump Integration for Smart Homes](https://tongyiheatpump.com/fridaytech-a-new-energy-architecture-an-integrated-solar-storage-heat-pump-system-for-the-future-home/) ## Portfolio - [Europe Residential Installations](https://tongyiheatpump.com/portfolio/europe-residential-installations/) - [Bilingual School – Centralized Commercial Air\-to\-Water Heat Pump System](https://tongyiheatpump.com/portfolio/bilingual-school-centralized-commercial-air-to-water-heat-pump-system/) - [Swimming Pool Heat Pump System](https://tongyiheatpump.com/portfolio/swimming-pool-heat-pump-system/) - [Field\-Tested R290 Efficiency in Real Finnish Weather](https://tongyiheatpump.com/portfolio/field-tested-r290-efficiency-in-real-finnish-weather/) - [Commercial Heat Pump Installation in Jiangsu](https://tongyiheatpump.com/portfolio/commercial-heat-pump-installation-in-jiangsu/) ## Products - [R290 Air\-to\-Water Heat Pump](https://tongyiheatpump.com/product/r290-inverter-air-to-water-heat-pump/): The Tongyi \R290 monoblock heat pump\ is a next\-generation air\-to\-water system designed for high efficiency, low environmental impact, and simplified installation\. Using natural refrigerant R290 \(propane\), this monoblock unit delivers reliable heating, cooling, and domestic hot water while meeting the latest European sustainability standards\. - [Commercial Heat Pump Water Heater \| DC Inverter 10–90 kW](https://tongyiheatpump.com/product/dc-inverter-commercial-heat-pump-water-heater/): \
Tongyi’s \Commercial Heat Pump Water Heater\ range is designed for hot water production in hotels, schools, hospitals, dormitories, sports facilities and other commercial buildings\. With DC inverter operation and available capacities from \10 kW to 90 kW\, the range supports commercial projects requiring efficient, controllable and scalable hot water supply\.\
\The system is developed for commercial applications where water\-heating demand changes during the day\. Inverter\-controlled operation adjusts output according to system requirements, while modular configurations support larger hot water projects requiring multiple connected units\.\
\