Nine-man Kidderminster fought back to draw and deny St Albans a win that may have boosted their survival hopes.
Leon Archer put St Albans ahead after 19 minutes, scoring from close range for his fifth goal for the club.
James Constable turned in Russell Penn's pass to level 15 minutes later, but was then sent off after 41 minutes for a wild challenge on Ahmed Deen.
Kidderminster also lost Stuart Whitehead eight minutes from time for his second bookable offence.
St Albans: Bastock, Seeby (Clarke 86), Elphick, Sangare, Deen, Buari (Watters 69), Lopez (Cracknell 69), Davis, Hann, Hastings, Archer.
Subs Not Used: Perks, Marwa.
Goals: Archer 19.
Kidderminster: Taylor, Wilson, Whitehead, Creighton, Harkness, Penn, Ferrell, Brady (Russell 59), Blackwood (Reynolds 59), Constable, Christie.
Subs Not Used: Sedgemore, Hay, Smikle.
Sent Off: Constable (41), Whitehead (82).
Booked: Whitehead, Christie.
Goals: Constable 34.
Ref: J Hopkins (Wickford).