The pools were heated with hot water from the nearby tramways power plant, the system being considered an engineering masterpiece of its time.

[4] Two local athletes were employed as custodians of the baths, swimmer Malcolm Champion (who frequently swam across the harbour to and from his North Shore home) and runner Billy Savidan.

[2] The facility was refurbished in 1986 and again after the YMCA received the management lease in 1997 from Auckland City Council.

Renovations included new sauna and steam rooms, and a gym on the upper level (YMCA club members only).

[6] In November 2009 it was announced that the Tepid Baths would close for a period of up to four years for a $12 million restoration project to address structural issues exacerbated by saltwater effects.