Use refrigerant R-32, which is more environmentally friendly than older refrigerants.

Daikin

+2

MA Supply Company

+2

Are configured as a heat pump (cooling + heating) in many cases. For example, the product page mentions “Split System Heat Pump” for the DH4SEA R-32 models.

Daikin

+1

Are available in capacities roughly 2.5 to 5 tons (or equivalents in BTU/h), depending on the variant. For instance, a listing for DH4SEA3010 shows ~30,000 BTU/h cooling/heating, ~2.5-ton size.

MA Supply Company

+1

Feature a durable outdoor-unit cabinet (nickel-gray powder finish, rust-resistant guard, access panels) and are conceived for robust installation.

Daikin Comfort

+1

Aim for moderate to high efficiency (depending on tonnage variant) — for example, a reported SEER2 ~14.3 for the 2.5-ton variant.