Gas Heat Pump Manufacturers
Many top manufacturers offer heat pump systems suited for varied types of heating and cooling needs. Typical unit sizes are listed in this table. Multiple units can be connected to meet greater heating and cooling loads.
 | Engine Driven | Heating Hot Water Cooling | 103,000 to 410,000 BTU/h | 8, 15, & 30 Tons | Commercially available | Residential Commercial Industrial |
 | Engine Driven | Heating Hot Water Cooling | 91,000 to 410,000 BTU/h | 5, 8, 11, 15 & 30 Tons | 15 Ton commercially available. | Commercial Industrial |
 | Absorption | Heating Hot Water Cooling | 962,000 tp 57,800,000 BTU/h | 66 to 3,968 Tons | Commercially available | Commercial Industrial |
 | Absorption | Heating Hot Water Cooling | 396,000 to 57,800,000 BTU/h | 20 to 2,000 Tons, or sub-freezing | Commercially available | Commercial Industrial |
 | Chemisorption | Heating Hot Water | Up to 50,000 BTU/h | N/A | Field Test 2023 | Residential |
 | Absorption | Heating Hot Water | 68,000 to 290,000 BTU/h | N/A | Commercially available | Residential Commercial |
 | Engine Driven | Heating Hot Water Cooling | 527,000 BTU/h | 22 Tons | Commercially available | Commercial Industrial |
 | Absorption | Heating Hot Water Cooling | 120,000 BTU/h | 5 Tons | Commercially available | Residential Commercial |
 | Absorption | Heating Hot Water | 10,000 to 140,000 BTU/h | Future: 1-4 Tons | Available 2022 | Residential Commercial |
 | Thermal Compression | Heating Hot Water Cooling | 75,000 BTU/h | 3 Tons | Field demos | Residential Commercial |
 | Engine Driven | Heating Hot Water Cooling | 108,000 to 198,000 BTU/h | 8, 10, 12, & 14 Tons | Commercially available | Residential Commercial Industrial |