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AMERICA'S HEATING & COOLING STORE.™
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Rinnai 37AHA045 Front
Rinnai 37AHB04508KA5
45,000 BTU, 1.5 to 2 Ton Cooling, Hydronic Air Handler



Product has been discontinued.
Please call us for a suitable alternate product.

800-865-5931
Mon - Fri 8:30am - 5:00pm Central

The newly designed Rinnai® multi-position hydronic air handlers offer a unique solution for a wide variety of small and medium sized residential and light commercial applications.  They are compact and able to fit in tight spaces which may include attics, basements, closets, crawlspaces and utility rooms.

The 37AHB units are equipped with an intelligent microprocessor control that allows for domestic hot water priority and adapts to available hot water flow for space heating by automatically regulating the pump and fan sequence to maximize comfort.

These unique hydronic air handlers are designed to work in combination with our line of Rinnai tankless water heaters to deliver heating capacities that cover a wide spectrum of residential and light commercial heating applications.  For these air handlers to provide cooling, a seperate outdoor condenser and evaporator coil must be installed.

Standard Features

  • Multi-position: Upflow, downflow, horizontal left or horizontal right without modifications
  • Modifiable for side-entry return air
  • Low-flow, high-head pump custom designed to work with Rinnai's tankless water heaters
  • Integrated control board with learning algorithm
  • No combustion air infiltration losses when used with a Rinnai tankless water heater
  • Four selectable heat blower off delay times
  • Multi-speed ECM motor
  • 20 gauge, prepainted, fully insulated, galvanized steel 
  • Multi-position control box
  • Designed for serviceability
  • Schrader valves to purge air from the system
  • Integral filter rack with filter
  • Five year parts, 1 year labor warranty

Configuration
Downflow / Horizontal / Upflow  

Blower Cooling Capacity
1.5 / 2 Tons 

Maximum Heating Output BTU
45000 BTU 

Nominal CFM
800  

Blower Type
Multi-Speed  

Maximum Fuse/Breaker
15 Amps 

Fuel Type
Electricity  

Water Connection- Inlet
3/4 inches 

Water Connection- Outlet
3/4 inches 

Product Weight
107 lbs 

Width
14 Inches 

Depth
22 Inches 

Height
34 Inches 

Voltage
115 Volts 

Limited Warranty
5 Years  
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  Phone
(800) 865-5931
Monday to Friday
8:30am - 5:00pm Central
  Mailing Address
1901 N. Clybourn Avenue
Suite 200
Chicago, IL 60614
  Email
[email protected]
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(425) 928-2455
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