ICP Metering Device .046 Chatleff Piston, 1173650
Part 1173650 is ICP's OEM .046 Chatleff metering piston, one step up in bore from the .042. It's a genuine International Comfort Products part, so it matches ICP-built equipment sold as Heil, Tempstar, Comfortmaker, Arcoaire, Day & Night, KeepRite, AirQuest, EcoTemp, and GrandAire wherever the parts list calls for a .046. Contractors stock it for quick service calls, and homeowners order it when the original piston is clogged with debris, damaged during repair, or missing after a coil replacement.
Is the .046 Piston the Right Size?
Budget Heating lists the .046 as a general reference for about 2-ton systems. ICP's documentation shows how much piston use varies by equipment, though. In the parts list for the PHN342 and PHN348 package heat pumps, ICP specifies two .046 pistons per unit. That's why the piston should always be matched to the specific model rather than to tonnage alone.
Before ordering, check the number stamped on your existing piston and compare it to the size in your unit's parts list or charging chart. When those agree on .046, part 1173650 is the correct factory replacement.
Ideal for: Service techs and homeowners replacing a .046 piston in ICP-built Heil, Tempstar, Comfortmaker, Arcoaire, Day & Night, KeepRite, AirQuest, EcoTemp, or GrandAire air conditioners and heat pumps.
Need a larger bore? Step up to the ICP .052 Metering Piston, 1174060, or step down to the ICP .042 Metering Piston, 1173634.
Tonnage references are general guidelines only. Always match the piston to the size specified by the equipment manufacturer for your exact model. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Manufacturer | International Comfort Products (ICP) |
|---|---|
| Part Number | 1173650 |
| Piston Size | .046 |
| Type | Chatleff Metering Piston |
| Quantity | One (1) Piston |
| Brands Built by ICP | Heil, Tempstar, Comfortmaker, Arcoaire, Day & Night, KeepRite, AirQuest, EcoTemp, GrandAire |
| OEM Example | PHN342 / PHN348 Package Heat Pumps (2 per unit) |
| Store Sizing Reference | Approx. 2 Ton (verify against your unit) |
This listing is for one genuine ICP 1173650 .046 piston. If your equipment uses two, order a quantity of two. Replacing a piston means opening the sealed system, so many techs also restock refrigerants and line flush for the same job.
Piston Features & Brand Compatibility
ICP 1173650 .046 Chatleff Piston
- Factory ICP replacement, part 1173650
- .046 bore, one size up from the .042
- Chatleff piston design per ICP's parts documentation
- Meters liquid refrigerant into the coil
- Specified in pairs in ICP PHN342/PHN348 heat pumps
- Restores factory metering after coil or piston damage
- No adjustment needed; it's a fixed orifice
- Good part for service truck inventory
- Sold each; order the quantity your unit calls for
- Usually ships in 2 to 3 business days
Fits ICP-Built Brands
- Heil
- Tempstar
- Comfortmaker
- Arcoaire
- Day & Night
- KeepRite
- AirQuest
- EcoTemp
- GrandAire
- Browse all HVAC service parts
Frequently Asked Questions
Is the ICP 1173650 an OEM part?
Yes. 1173650 is International Comfort Products' own part number for the .046 Chatleff piston.
Will the .046 piston work in my EcoTemp or GrandAire unit?
EcoTemp and GrandAire equipment is built by ICP. If your unit's parts list or existing piston calls for .046, this is the matching OEM part.
Why do some ICP units use two pistons?
Some equipment has more than one metering point. ICP's PHN342 and PHN348 package heat pumps, for example, list two .046 pistons per unit.
How is the .046 different from the .042 and .052?
The number is the bore size. The .046 meters more refrigerant than the .042 and less than the .052. Only the size your equipment specifies should be used.
Can I swap a piston for a TXV instead?
Converting from a fixed piston to a TXV is a system change that should follow the equipment manufacturer's approved kits and instructions. You can browse TXV valves, but confirm compatibility with a technician.
Can a homeowner install this piston?
Changing a piston means opening the refrigerant circuit, which requires recovery equipment and, in the U.S., EPA Section 608 certification. We recommend a licensed HVAC technician.
