Low GWP Sirius Heat Side Discharge Communicating/24V Heat Pumps
Pack a lot of power into a small footprint.
Durastar’s Sirius Heat™ technologies offer consistency when temperatures drop. Depend on 100% heating capacity at 0ºF and reliable operation down to a brisk -22ºF. Furthermore, with efficiency ratings up to SEER2 19, homeowners benefit from cost-saving efficiencies.
These low GWP side discharge units combine the innovative technology of our high-efficiency mini-split products with the compatibility of our variable-speed air handlers. In addition, the inverter compressor makes them much quieter than traditional unitary equipment with a sound rating down to 59 dBAs. RS-485 communicating and 24V thermostat compatibility. A DRSTAT101 wired thermostat is included.
Pro-tip! Many system pairings are eligible for 25C IRA tax credits. Learn more about the Inflation Reduction Act for 2025. When filing your 2025 taxes, you’ll need Durastar’s 4-Digit PIN: X7W7
Models
Low GWP Sirius Heat Side Discharge Communicating/24V Heat Pumps Features
- A2L Compatible
- HVAC equipment products sold to licensed contractors only. Products sold in select areas only, please contact your local branch for availability in your area.
- High heating capacity at 0 Deg F
- Operational temperature down to -22 Deg F
- Included base pan heater
- Variable speed inverter compressor
- Anti-corrosion fin coating
- Quiet operation
- 24V Compatible
- Designed for Sustainability with Low GWP and Refrigerant Detection System
DRU1H18S2A
- Application: Residential
- BTU: 18000
- BTU Cooling Rating: 18000 Btu/h
- BTU Heat Rating: 19000 Btu/h
- Compressor Type: Inverter
- Decibel Rating (dB): 59 dB
- Green Product: Yes,Energy Star
- Height: 26-1/2 in
- Indoor / Outdoor: Outdoor
- Length: 13-7/16 in
- Liquid Line (OD): 3/8 in
- Maximum Temperature: 122
- Phase: Single Phase
- Refrigerant: R-454B
- Suction Line (OD): 3/4 in
- Volts: 208/230V
- Weight: 101 lb
- Width: 35 in
- Zones: 1
Frequently Asked questions
What’s more important, HSPF or SEER?
If you live in an area where winters are mild, then pay extra attention to the SEER rating. Conversely, if you live in the north where winters are more extreme, then the HSPF value is more important.
What are the main differences between a heat pump and a mini-split heat pump (otherwise known as a ductless heat pump)?
Generally, heat pumps are integrated into your home’s central heating and cooling system. That means the heat it provides travels through ducts into various rooms throughout your home. Alternatively, mini-split heat pumps, or ductless heat pumps, distribute heat directly into the room where they are installed.
What is HSPF2?
HSPF2 stands for Heating Seasonal Performance Factor 2. HSPF2 is a standardized rating used by all heat pump manufacturers to compare energy efficiencies between heat pumps. The higher the HSPF2, the more efficient the system operates during cold seasons.
What is EER2?
EER2 is Energy Efficiency Ratio 2. It’s the cooling capacity of an air conditioner or heat pump unit for a specific amount of energy used in a specific testing climate.
Which AC units are the quietest?
Decibels (dB) are the unit of measure for the intensity of noise. The lower the decibel level, the quieter your unit will be. We share key specifications, such as decibels, on our product pages so you can quickly compare your options.
What does SEER2 mean?
SEER2 stands for Seasonal Efficiency Energy Ratio which compares the energy efficiencies from different central air conditioners and heat pump systems. The higher the rating, the more efficient the system.
How to talk to your contractor
Learn how to talk the talk with a few of our top tips. We cover important questions to ask your HVAC contractor, common mistakes when buying a new system, and more.
Learn More
