Compressors for residential HVAC units are fairly easy to find a replacement. Copeland offers a variety of replacements for all residential units. You do not have to match up the model numbers exactly and in most cases it will not as the model number is changed for all after market replacements. In other words Copeland changes what is referred to as the Bill of Material portion of the model number for compressors sold as replacements.
To learn more about choosing a Copeland Compressor
Copeland Compressor model number breakdown
Example for ZR34K3-PFV-830 Z = Scroll
R = R22 Refrigerant
34 = BtuK/hr or 34,000 Btu/hr and is equivalent to 3 Tons ( an acceptable Btu difference is + or - 3)
K3 = is the revision of this type of compressor and is not important when choosing a replacement
PFV = mounting and voltage (as long as the previous compressor has this, then you are OK)
830 - is the Bill of Material that Copeland assigns. This number changes for all replacement compressors and is not critical.
In summary the following model features are critical and need to be the same (highlighted in RED) ZR34K3-PFV-830
To search for a replacement just submit as the following ZR16K5-PFV
Copeland 1.5 Ton R22 Scroll Compressor ZR18K5E-PFV
HVAC Parts Outlet is an online supplier of air conditioning and heating replacement parts, including heat pumps. Call 877-482-2500 for your HVAC parts today! We cater to and support the Do It Yourself (DIY) customer or contractor with parts selection, installation guides and same day shipment when possible. HVAC Parts Outlet provides new parts directly from the manufacturer.