How Old Is Your Payne Heat Pump? – Determine Age By Serial Number

It's not as challenging as you imagine to figure out how old your Pyne heat pump is. Simply looking at the serial number on the heat pump's rating plate will allow you to determine its age. We thoroughly studied to correctly instruct you on how to read the serial number.

Contrary to many other manufacturers, Payne's heat pump maturity level is difficult to read from the information label. They've gone over several different serial number forms. View the unique forms below.

  • Form One       2016Z56789  [ten characters]
  • Form Two:     860709876    [nine characters]
  • Form Three:  T2A12114       [eight characters]
  • Form Four:    D312345         [seven characters]

The heat pump's serial number carries a variety of vital details, such as the age of the heat pump. Make sure to read this post through to the conclusion. We will explore each of the serial number forms listed above.

Air heat pump and house. - How Old Is Your Payne Heat Pump? - Determine Age By Serial Number

Different Serial Number Forms

Your heat pump serial number incorporates detailed data about the unit in the digits and letters that make up the number series. The examples below evaluate a few standard serial numbers.

Air conditioning and heating unit for a residential house hidden by holly

However, nowadays, it's not necessary to examine the product code to figure out the date of manufacturing for modern Payne heat pump systems. We'll nonetheless explain how to understand them for your information.

Ten Characters - 2016Z56789

The first two numbers ["20"] of the ten-character sample above indicate the day of the week (mid of May). Its year is indicated by the following two numerals ["16"]. This means that the heat pump unit was created in May 2016. While the remaining characters make up the unit's sequence number.

Nine Characters - 860709876

In contrast to the first form of serial number we shared with you, this second one is the opposite, and no letters are used in serial numbers.

In this format, the year is represented by the first two digits ["86"], and the week is represented by the next two digits ["07"].

In this instance, the item was produced in February 1986. The sequence number appears in the remaining characters.

Eight Characters - T2A12114

As you can see, the first character for this kind of serial number form starts with a letter character. The first letter ["W"] here represents the month, which is July. Then, followed by a number character ["2"] which represents the year ["1982"]. For your reference, see below.

Manufacturing Month Corresponding Letter   Manufacturing Year Corresponding Number
January M   1980 0
February N   1981 1
March P   1982 2
April Q   1983 3
May R   1984 4
June S      
July T      
August V      
September W      
October X      
November Y      
December Z      


Seven Characters - D312345 

Only from 1970 to 1979 was this version in use. Similar to the third form, this last form uses the first character ["D"] to indicate the month and the second character ["3"] to indicate the year.

Therefore, the unit was made on April 1973. Everything else is a sequence number.

Manufacturing Month Corresponding Letter   Manufacturing Year Corresponding Number
January A   1970 0
February B   1971 1
March C   1972 2
April D   1973 3
May E   1974 4
June F   1975 5
July G   1976 6
August H   1977 7
September I   1978 8
October J   1979 9
November K      
December L      


What Tonnage Is My Payne Heat Pump

Heat pump on the side of a single family home.

After learning how to determine the age of your heat pump, you might want to learn more about its tonnage. But first, what exactly is tonnage? Is it crucial that you check the tonnage of your heat pump?

First, you must comprehend BTUs [British thermal units] to recognize tonnage. It represents how much heat is required to raise a pound of water by one degree Celsius. What exactly does this mean in actuality, though?

BTUs are a measurement used by the HVAC industry to describe the amount of heat a Payne heat pump or air conditioner could eliminate from space in an hour.

A heat pump's capacity to add warmth throughout the heating season is measured in BTUs.

Tonnage Is Essential For A Variety Of Reasons

Be sure that when replacing a heat pump that has provided years of trustworthy and energy-efficient service, you buy a replacement that is at least comparable to what you already use.

But you've likely been using a heat pump that's a little small for your house.

Maybe you've upgraded some areas inside your home, like the ceilings, or built another room. Once you've constructed something bigger, you'll need a bigger heat pump.

Knowing the tonnage of your current unit can help you get off to a great start. The inverse is also true. If your pump was intended to be large, it is probably exceedingly inefficient and ineffectual.

Another reason you might need a smaller heat pump is that your house has become more environmentally energy-efficient due to the replacement windows you purchased.

Knowing what you already have will help you and your HVAC expert get off to a good start.

Determining Tonnage

Begin with walking outdoors and looking at the heat pump to get an idea of its tonnage. All the details regarding the heat pump, such as the model number, are written on the plaque.

There are 14–16 characters in the Payne HVAC model number, a combination of numbers and letters. 

Three numerals represent the nominal BTU of your heat pump at the end of the model number that can be divided by 12. 12,000 BTUs make up one ton of cooling per hour. Examples of common Payne model number designations are analyzed in the sections below.

  • [PH16NA018-00DA] - The bold number 18 denotes the heat pump's nominal BTU in thousands. In other words, divide 18000 BTU by 12000 BTU, or just divide 18 by 12, to get 1.5 tons.

You may see the figures and their equivalent tons below as well.

  • 18 = 1.5 tons
  • 24 = 2 tons
  • 30 = 2.5 tons
  • 36 = 3 tons
  • 42 = 3.5 tons
  • 48 = 4 tons
  • 60 = 5 tons

Payne Heat Pump Maintenance

Technician using manifold gauge is measuring equipment for filling industrial factory air conditioners and checking maintenance outdoor air compressor unit.

You likely desire to increase the life of your high-efficiency heat pump. You must make sure it remains in good condition to maximize its energy efficiency over such a lengthy period. 

Keep the Payne heat pump's components clean to extend its lifespan. Fallen leaves, mud, and other obstructions may block the equipment for outdoor heat pumps. Examine and clean the appliance at least every year.

The best time to complete that is before winter, when it is even more crucial that the heat pump system performs as intended. Check for leaks in your ductwork.

The heating pump may experience severe issues as a result of undetected leaks and also other types of ductwork problems. As a result, it is wise to inspect it, seal off any weak connections, mend any tears, and make note of any significant problems.

Check each of the electrical connections thoroughly. Your heating system may malfunction as a result of a weak connection, which can also be dangerous.

Keep in mind to seal everything firmly because it may affect anything, including the functionality of your thermostat.

If your filters are unclean, which might prevent air from entering your home, your system may be working overtime, but you may not be feeling the effects.

Make careful to change the filters as often as required to keep the system operating correctly. Even though you may evaluate your HVAC system on your own, obtaining another evaluation from an HVAC professional is always beneficial.

Doing so can ensure everything is working correctly and deal with any issues they may uncover before they do too much damage. Usually, the functional life of a heat pump is between 10 and 15 years.

Are Heat Pumps and Air Conditioner The Same

Unexpected similarities exist between how heat pumps and conventional air conditioners operate. The only thing that sets a heat pump apart is its flexibility to switch from cooling to heating when necessary.

It functions as a reverse air conditioner. Think of air conditioners as heat pumps with only one conduit through which heat is transferred from the inside to the outside.

Despite the possibility that a heat pump could be related to an air conditioner, the term is most usually used to describe an HVAC system that can transfer heat indoors or outdoors.

Heat can be transferred both ways—from the inside to the outside and vice versa—using heat pumps, which can also be used for cooling. In addition, heat pumps' lifespans may be shortened if they are used year-round.

Additionally, this type of device performs poorly in regions with freezing temperatures. Heat pumps are more effective than air conditioners, which are less expensive but may have greater utility expenses.

Check out this HVAC Coil Cleaner on Amazon. 

Find this cleaning brush on Amazon.


Air heat pumps and house, 3D illustration

After reading the entire article, you are aware that the only way to determine the age of a Payne heat pump is to look up its serial number, which provides the month and year of manufacturing.

To calculate the tonnage, all you need to do is know the model number of your heating system, look at the nominal number, and then divide it by 12.

Also, how heat pumps relate to and vary from air conditioners, as well as how to maintain them effectively, were covered.

Before you go, here are related articles that you may want to read:

Why Isn't My Payne Heat Pump Compressor Turning On?

Can A Heat Pump Overheat? [What Causes This?]

Heat Pump Not Defrosting – What To Do?

Share this article

Leave a Reply

Your email address will not be published. Required fields are marked *