Recently, Lennox has learned that the compressors for the HS21/HP21 units – introduced in 1994 and sold until June 2003 – are no longer commercially available, yet the newest of these units still have a year or more of compressor warranty remaining.

To respond to HS21/HP21 compressor warranty claims when compressors are not available, Lennox will now offer customers a new Aire-Flo 13ACD/13HPD (or future Lennox equivalent) R-22 outdoor unit at no cost to the homeowner (excluding labor, shipping and additional materials). An optional upgrade opportunity is also available.