Heat pump model numbers starting E4

5 certified units whose model number starts E4, out of every unit in the A to Z. Updated Oct 17, 2026.

One row per certified model number. All 5 in this group are listed; nothing is held back for a second page.

Model numbers starting E4
Model number	Type	Size class	Brands	Certified pairings
E4HL5018A1000A	central	18,000 Btu (1.5-ton)	2	4
E4HL5024A1000A	central	24,000 Btu (2-ton)	4	10
E4HL5030A1000A	central	30,000 Btu (2.5-ton)	2	2
E4HL5036A1000A	central	30,000 Btu (2.5-ton)	2	12
E4HL5060A1000A	central	48,000 Btu (4-ton)	2	2

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