CX45X EVI MAX
Air-to-Water Heat Pump
Seasonal Average COP / SCOP 4.95 /COP 4.98
IPLV.SI COP 5.326 (w/w)
Seasonal Average EER 18.17
Product Description
Extreme Cold Climate Heat Pump T1. EVI MAX Operation To -22F / Supply Outlet Up To 149F
Optimized for record-setting cold-climate heating performance while still beating every other brand of air-to-water heat pump in the industry for cooling efficiency.
Includes DYNAMIC HUMIDITY CONTROL (DHC) factory Installed on all units.
The CX45X is based on the record-setting CX40 which has the highest officially-certified heating & cooling efficiency ratings among all air-to-water heat pumps in its size range. The CX45 is the same system with different software, at the same compressor speed the two units have identical performance, with the CX45 allowing a “Turbo” function for higher capacity. No requirement for Oxygen-Barrier PEX. The CX65X comes with a long-lasting stainless steel pump, all wet-contact components are non-ferrous.
Ratings:
| System | Test Conditions | Max Capacity @A95F kBTU/h | Seasonal COP | Seasonal EER |
|---|---|---|---|---|
| CX45 | Cooling at W55.4º | 37.84 | 7.86 | 26.81 |
| CX45 | Cooling at W44.6º | 30.02 | 5.36 | 18.17 |
| CX45 | Heating W95º/A47ºdb/43ºwb | 46.95 | SCOP 4.95 | *HSPF 16.89 |
Get the highest rated officially-certified seasonal average efficiency of any air-to-water heat pump for both heating and cooling.
The CX40 & CX40X use the same award-winning USA patented technology as CX34, CX35, CX50, and CX65.
What’s different about the X model? CX40X adds a stainless steel pump and has an aluminum front grill.
Performance Maps
CX45/CX45X Seasonal Average Cooling Performance
CX45/CX45X Full Speed Cooling Performance Map
CX45 / CX45X T3 Rating
CX45/CX45X Full Speed Heating Performance Map
CX45/CX45X Chiltrix SGS Rating (SCOP)
Cooling performance certified in accordance with the AHRI Air-Cooled Water-Chilling Packages Certification Program, which is based on AHRI Standard 550/590 (I-P) and AHRI Standard 551/591 (SI) Certified in accordance with the AHRI Air-Cooled Water-Chilling Packages Certification Program, which is based on AHRI Standard 550/590 (I-P) and AHRI Standard 551/591 (SI). Heating COP and SCOP is certified by SGS under EN14825 inclusive of EN14511-2, EN14511-3, EN50564.
Officially Certified World’s Record Efficiency

UL 60335-2-40 / UL 60335-1-40 CSA C22.2 / SGS
Product Documentation, Specs, and Certifications
Certified #1 in Efficiency
Introducing… The World’s Most Efficient Air-to-Water Heat Pumps
Maximum Flexibility:
- Heating
- Cooling
- Hot Water
- Radiant (Heating and/or Cooling)
- Ductless Fan Coils
- Ducted Systems
- Mini-Duct (Concealed Ceiling)
- Use any or all of the above together.
Ductless Room Fan Coil Units
Mount on Wall, Floor, or Ceiling. Four sizes from 1/4 to 1 ton.





For Ducted Systems:
Chiltrix is compatible with most standard hydronic air handlers and offers 4 AHUs sized up to 5 tons.
Radiant Heating
Use your Chiltrix Air To Water Heat Pump with an in-floor radiant heating (or cooling) system.
Domestic Hot Water With Air To Water Heat Pump
Let the Chiltrix unit perform your water heating and get up to 70% annual water heating savings.
AHRI PERFORMANCE AWARD
6 Consecutive 3-Year Awards


