ICP Metering Device .065 Chatleff Piston, 1173873
The ICP 1173873 is a genuine .065 metering piston from International Comfort Products, the second-largest bore in our ICP lineup. ICP builds the Heil, Tempstar, Comfortmaker, Arcoaire, Day & Night, KeepRite, AirQuest, EcoTemp, and GrandAire brands, so this single OEM part replaces the .065 piston in any of those units that specify it. It suits service contractors working on larger ICP heat pumps and air conditioners, and owners of bigger homes who need the right factory part to get a system back in service.
Is the .065 Piston the Right Size?
Our catalog uses about 4 tons as a general sizing reference for the .065. Since ICP sets piston size per model, confirm the size two ways: the number stamped on the piston you removed, and the size listed in your equipment's parts list or charging chart.
Choosing between .061, .065, and .070 should never be guesswork. The steps between these bores are small, but they change how much refrigerant reaches the coil, which affects superheat, capacity, and compressor life.
Ideal for: Replacing a .065 piston in larger 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 .070 Metering Piston, 1173869, or step down to the ICP .061 Metering Piston, 1173663.
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 | 1173873 |
| Piston Size | .065 |
| Type | Fixed Metering Piston |
| Quantity | One (1) Piston |
| Brands Built by ICP | Heil, Tempstar, Comfortmaker, Arcoaire, Day & Night, KeepRite, AirQuest, EcoTemp, GrandAire |
| Bore Position in Lineup | Second-largest, between .061 and .070 |
| Store Sizing Reference | Approx. 4 Ton (verify against your unit) |
This order includes one ICP 1173873 .065 piston. Since the sealed system has to be opened to install it, check your stock of refrigerants and line flush and filter driers before the service call.
Piston Features & Brand Compatibility
ICP 1173873 .065 Metering Piston
- Authentic ICP part number 1173873
- .065 bore, the second-largest in our ICP lineup
- Fixed-orifice metering for larger refrigerant loads
- Same piston across the ICP brand family
- Restores factory refrigerant metering
- No calibration or adjustment required
- For larger residential ICP systems
- Small enough to keep in any parts bin
- Sold individually
- Usually ships in 2 to 3 business days
Fits ICP-Built Brands
- Heil
- Tempstar
- Comfortmaker
- Arcoaire
- Day & Night
- KeepRite
- AirQuest
- EcoTemp
- GrandAire
- Browse HVAC service parts
Frequently Asked Questions
Is the ICP 1173873 the same piston used in Comfortmaker units?
Comfortmaker is an ICP brand. When a Comfortmaker parts list calls for 1173873 or a .065 piston, this is that part.
How close in size are the .061, .065, and .070 pistons?
They're only a few thousandths of an inch apart, but each meters a different amount of refrigerant. That's why the exact specified size matters.
Does a bigger piston mean more cooling?
No. A larger bore than specified overfeeds the coil instead of adding capacity. The piston must match the system design.
Can I use the .065 in a GrandAire heat pump?
GrandAire equipment is built by ICP. If the heat pump's parts list or existing piston shows .065, the 1173873 is the OEM replacement.
Why is this piston priced lower than the other sizes?
Pricing reflects current inventory and promotions. It's the same genuine ICP part quality as the rest of the piston lineup.
How long does shipping take?
The ICP 1173873 usually ships in 2 to 3 business days.
