Air to Water Heat Exchanger 190kBtu 18x18 1" Copper Ports

AB Air to Water Heat Exchangers designed with high quality aluminum fins and seamless copper tubes.It is fitted with 12 aluminum fins per inches and the unique design allows for heating loads of 50,000 to 60,000 Btu per square foot. Despite a fin density of 12 fins per inch, there is low flow resistance. It's widely application in Residential and Commercial Heating and Cooling, Apartment and Condominiums Heating and Cooling, Forced Air Heating Hybrid Systems, Air Conditioning,  Dehumidification Inverter Cooling.

  • This particular model has 1" ports and a capacity of 190,000 Btu.
  • 1-year warranty against manufacturer's defects and is ETL listed.
  • Flow Rate: 12 Gallons Per Minute, Air Flow Capacity: 1200 Cubic Feet Per Minute
  • Our models ideal for both residential and commercial applications can be used with sources of hot water to create hot air, such as indoor boilers, outdoor wood boilers, natural gas boilers, propane boilers, oil boilers, electric boilers and other hot water heaters or furnace heat exchangers.

Product Information

HTL18x18 Fitting Size
Design Pressure
190,000 Btu Rating
175psi @ 350F

Test Pressure

3 rows of 3/8", copper

12 per inch, aluminum Materials
Steel, Copper, Aluminum
Min. Operating

Max. Operating

Dimensions, Weight
18" x 18" x 3.5", 17lb

*Note: Capacity is based on 180F boiler output

Water to Air Heat Exchanger Size Choosing Guide.pdf

FAQ and Support
What to do if the fins become bent:
To straighten out bent fins, you'll need a fin comb or something similar. Some people have reported success with a plastic butter knife. Make sure that whatever you use won't cause any scraping damage to the fins. Take whichever tool you decided on and gently go over the fins to straighten them out. This will work for most bent fin issues.
We have worked with heating systems for over 10 years and are happy to help you with any questions or concerns that you may have. You can email us at or call 833-328-6888 for help with your heating projects.