Replacing a door handle is mostly a matter of matching measurements and following the order of parts. If the new set fits the existing holes, you only need a screwdriver and about twenty minutes. Measure first so the new set matches.
Measure Before Buying
Three numbers decide the fit. The distance from the door edge to the center of the big hole is called backset. The size of the large hole across the door face is the bore. The thickness of the door matters as well. Compare these with the new set’s packaging, and check the maker’s guide.
- Note whether the handle is for a passage door (no lock), a privacy door (bath or bedroom) or a keyed door.
- Check whether the latch plate on the edge is round or square cornered.
- Keep the old set until the new one works.
Parts in Order
| Part | Where it sits |
|---|---|
| Handle or knob | Both faces of the door |
| Spindle | Through the latch |
| Latch | In the door edge |
| Strike plate | On the door frame |
The Swap, Step by Step
- Remove the screws on the inner handle plate and pull both handles apart.
- Take the two screws out of the latch plate on the door edge and slide the latch out.
- Slide the new latch into the edge hole, turning the angled side toward the closing direction.
- Screw the latch plate in place.
- Insert the outside handle through the latch with the spindle running through.
- Fit the inner handle on the other side, lining up the screw holes.
- Thread the long screws through and tighten them alternately, a little each time.
- Close the door and check that the latch meets the strike plate. Adjust the plate if the door rattles or fails to catch.
Small Snags
- Handle droops: the spindle may be too short for a thick door; check the maker’s range.
- Latch will not retract: remove the handle and look for a bent part.
- Door will not shut: the strike plate may need to be moved a few millimeters.
Take photos of the old set before you take it apart so you remember how the pieces face. Keep small parts together in a cup. If the new handle is the lever type, check whether it is made for left or right hinged doors, because some levers are not reversible, and read the maker leaflet for the exact orientation.
FAQ
Can I change the handle on an exterior door myself?
The method is similar, but entry doors involve locks and home protection. Follow the maker’s directions, and consider a qualified locksmith.
Do I need a drill?
Not if the new set fits the holes. A drill is required only for adding or enlarging holes, which calls for a drill guide and care.
The Short Version
Measure backset, bore and thickness, remove the old set, fit the new latch, then add both handles. Test the catch on the frame before leaving it. Follow the maker’s instructions for your model.