The organ at Saint Luke's was installed in 1986. It was designed by William Entriken, Director of Music at the church from 1976 to 1988, in collaboration with the builders, Casavant Freres, Limitee, St.-Hyacinthe, Quebec. The instrument is, with one tonal change, a replica of its predecessor at St. Luke's, installed in 1979 and destroyed by fire barely 18 months later. The organ has mechanical key action, electrical stop action, two manuals, 27 stops, 34 ranks, and 1,670 pipes. Classic in style, it has three divisions: Hauptwerk, Rückpositiv, and Pedal. CASAVANT FRERES, LIMITEE Op. 3550
| Hauptwerk | Rückpositiv | Pedal | |||||
| Praestant | 8' | Gedackt | 8' | Subbass | 16' | ||
| Hohlflöte | 8' | Praestant | 4' | Oktave | 8' | ||
| Spitzgamba | 8' | Rohrflöte | 4' | Oktave | 4' | ||
| Oktave | 4' | Oktave | 2' | Mixtur | IV | ||
| Spitzflöte | 4' | Quinte | 1-1/3' | Posaune | 16' | ||
| Nasat | 2-2/3' | Sesquialtera | II | Trompete | 8' | ||
| Gemshorn | 2' | Scharf | III | ||||
| Terz | 1-3/5' | Krummhorn | 8' | ||||
| Mixtur | IV | Tremulant | |||||
| Dulzian | 16' | ||||||
| Trompete | 8' | ||||||
| Tremulant | |||||||
| Zimbelstern |
