Go to rheem.com and look up their model# nomenclature. It can usually be found by looking at the spec sheet for any of their products, in your case a heat pump. That is if you don`t have the installation/operation manual for your unit, if you do happen to have that it`s on page 1 or 2.
Seer = 10
Your first set of numbers gives you the tonnage, so this is a 2 ton; your "4" number represents a 460-volt electrical requirement
2.5 tons. 1 ton =12,000 btu so 30,000 btu=2.5 tons. The 30 in the model # denotes btu of the unit in 1000`s.
3 ton it goes by 12.000 btu per ton yours model # has 36 that is 12x3= 36
5 ton heat pump, 12 SEER,most likely single stage.
Rheem, Trane, Carrier
Aquacal and Rheem make good pool heat pumps and have better warranties. The Aquacal SS175 has a 7 year parts, 2 year labor, 7 year compressor and lifetime heat exchanger warranty. The Rheem M8350ti has a similar warranty but only has a 10 year warranty on the heat exchanger.
7.5 ton Heat Pump Packaged Unit, dual circuit
the number would put this unit in at a 3 1/2 ton 10 seer unit.. heat pump i believe.. but out dated
call a ruud or rheem dealer with the serial number on the unit tag.They should be able to answer this.
In the long run a Rheem Tankless water heater will save you money in the long run by heating the water faster and you will have to run the water for a shorter amount of time for it to heat up.