How to Clean a Trumpet
Updated Nov 11, 2026 · By 
Jonah Mercer · Editorial policy
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Cleaning removes the moisture and residue that collect inside the tubes and on the valves during playing, and keeps the valves and slides moving freely.
Take the trumpet apart
Work over a soft dry cloth so small parts do not roll away. Pull out the mouthpiece, then remove the valves and set each valve down in order with its valve cap and finger button. Pull out the tuning slides and the valve slides, keeping the slides in order so each slide goes back in the same place. Leave the water keys open while you work.
Wash the parts in water
Fill a basin with water and a small amount of mild soap. Set the trumpet body and the slides in the water and let the soapy water reach inside the tubes. Wipe the outside of each part with a soft cloth, and wash the mouthpiece in the same water. Do not use hot water, solvents, or abrasive pads on any part of the trumpet.
Clean inside the tubes and valves
Push a soft brush through each tube of the body and the slides to loosen residue, then rinse the brush as you work. Wipe each valve with a soft dry cloth to remove residue from the valve surface, and wipe inside each valve casing with a soft cloth wrapped around the brush.
Rinse and dry every part
Dry each part with a soft dry cloth, then set the parts on a dry cloth and let them air dry before you put the trumpet back together. Drying matters because moisture left inside the tubes leads to residue and sticky valves.
Oil the valves and put it together
Put a small amount of valve oil on each valve and work the valve up and down in its casing so the oil spreads. Add slide grease to the outer tubes of the slides, then slide each slide back into place. Put the valves back in the same order you removed them, refit the valve caps and finger buttons, and push the mouthpiece back in. Press each valve to check that it moves freely.
Wipe the outside and store it
Wipe the outside of the trumpet with a soft dry cloth to remove fingerprints and moisture, and use the maker's own cleaner on the finish when the maker recommends it. Put the trumpet in its case with the mouthpiece and any cleaning tools kept apart from the body. Store the case where it stays dry and away from heat.
What you need
Eastar ETR-390 Standard B Flat Trumpet
Includes a cleaning kit, a 7C mouthpiece, gloves and a hard case, with stainless steel valves and a lacquer finish.
- Case or gig bag included
- Mouthpiece included
- Key: Bb
- Finish: Lacquer
- Valves: Stainless Steel
- 12-month warranty stated
EASTROCK Bb Trumpet Standard Trumpet Set
Includes a tuning rod, a soft polishing cloth, a silver plated 7C mouthpiece, gloves and a hard case with backpack straps.
- Case or gig bag included
- Mouthpiece included
- Key: Bb
- Finish: Black Nickel
- 1-year warranty stated
Glory Bb Trumpet
Includes a case and gloves, with a painted red finish and brass body.
- Case or gig bag included
- Key: Bb
- Finish: Painted
PAMPET Plastic Bb Trumpet Standard Trumpet Set
Includes 3C and 7C mouthpieces, with a lightweight ABS body and a lacquered finish.
- Mouthpiece included
- Key: Bb
- Finish: Lacquered
- 1-year warranty stated
These come from our ranked list Best Trumpet, which compares them spec by spec.
Frequently asked questions
How often should a trumpet be cleaned?
Clean the trumpet when the valves start to feel slow or sticky, when the slides resist moving, or when you see residue or discoloration inside the tubes. Players who play every day will see those signs sooner than players who play less often.
Can you clean a trumpet with water alone?
Water with mild soap washes away residue that plain water leaves behind. Rinse with clean water, dry every part with a soft dry cloth, and use the maker's own cleaner on the finish when the maker recommends it.
Should the mouthpiece be cleaned separately?
Yes. A mouthpiece brush reaches inside the shank where residue collects.
How do you clean the inside of the tuning slides?
Add slide grease to the outer tubes so the slides move freely.
Ranked trumpets lists
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Product details come from each Amazon listing and can change. Check the listing before you buy.