The two sides battered one another into submission in the closing stages, but neither could make a dent on the scoreboard, with a late drive from Hearts substitute Gary Glen slipping a foot wide.
BBC: Andy Webster holds off Hearts' Jamie Mole
2.
If you are stuck, in real trouble, where your wheels are slipping badly, to pull away resort to slightly deflating the drive wheel tyres - this gives them a larger area of contact with the road.
BBC: Your tips for coping in a colder UK climate
3.
United went close to a second when a low drive from Morgaro Gomis struck the near post and rebounded off the back of Langfield before slipping wide.
BBC: Sport - Football - Dundee United 3-1 Aberdeen