AEROSYS TTWC-R24P21LX -2.0 Ton - LX Series Condenser 36H x 19W

Aerosys has permanently closed and this unit is discontinued. The TTWC-R24P21LX is no longer manufactured, and no manufacturer builds a replacement for the 36" x 19" P Series opening. We have ours custom fabricated to fit the same sleeve, charged with R-454B instead of the phased-out R-410A. Lead time is 14 to 21 days, built to order. See the Aerosys replacement cross-reference for the full model-by-model list.

About this unit (for identification)

The Aerosys TTWC-R24P21LX is a 2.0-ton through-wall condenser built for the spaces where a 1.5-ton unit just doesn't cut it -- large living rooms, open-concept layouts, and oversized master suites in the 700 to 1,000 square foot range. At 24,000 BTU, this is the most popular size we sell into NYC co-ops and condos, because it covers the majority of primary living spaces without being oversized for the room (which wastes energy and causes humidity problems).

Like every Aerosys TTWC, this is a split system outdoor condenser. It mounts through your building's wall sleeve and connects to an indoor air handler on the apartment side via refrigerant lines. You get real air conditioning performance -- not the compromise of a packaged terminal unit. If you've been living with a loud, underperforming PTAC and want to understand why contractors increasingly recommend the split approach, check out our PTAC vs. through-wall comparison.

The LX Series designation means this unit gets Aerosys's premium component package. We're talking commercial-rated contactors, a beefier condenser fan motor, and coils designed to hold up longer in the salt air and grime that NYC outdoor units deal with constantly. For a building doing a bulk replacement across multiple apartments, the LX makes especially good sense -- the upfront cost over the standard R24P21 is small per unit, and the reduced maintenance calls add up fast when you're managing dozens of systems.

Fits the standard 36" W x 19" H wall sleeve that's been the NYC building standard for decades. No sleeve swaps, no structural work, no DOB permits for a straight replacement. Electrical requirements: 208-230V/60Hz/1Ph, R-410A refrigerant. Manufactured in the USA. Need help figuring out whether 2.0 tons is the right call for your space? Run through our sizing guide -- it takes about two minutes and accounts for the factors that actually matter in New York apartments, like sun exposure and floor height.