For soldering copper pipe, use a trigger-start propane or MAP-Pro torch: the Bernzomatic TS8000 is the one most plumbers carry. It lights instantly, holds a steady flame at any angle, and with a MAP-Pro cylinder brings 1/2-inch and 3/4-inch copper to soldering temperature fast. Patching a single joint? A basic plumbers kit does the job.
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Soldering copper isn’t hard, but a bad torch makes it miserable — weak flame, finicky ignition, joints that never get hot enough to draw solder. A good trigger-start torch lights instantly, holds a steady flame at any angle, and gets the joint to temperature fast so the solder flows clean.
Soldering a valve rather than a fitting? See solder a ball valve open or closed — the manufacturers disagree, and the heat rules matter more than the handle.
The consumables matter as much as the tool — see the plumbing solder and flux worth buying.
Here’s what I’d hand a homeowner learning to sweat copper, plus the pro torch I actually use.
| Pick | Product | Fuel | Flame | Key spec |
|---|---|---|---|---|
| Best Overall | Bernzomatic TS8000 | MAP-Pro or propane | Ultra-swirl | High-output head · fuel sold separately |
| All-in-one | Bernzomatic Basic Plumbers Kit | — | — | Contents not published on the listing · read before ordering |
| Best Fuel Upgrade | Bernzomatic MAP-Pro MG9 | MAP-Pro cylinder | Fuel only | 3,730°F · 14.1 oz · 2-pack |
Best OverallEditor’s Choice
Bernzomatic TS8000 Trigger-Start Torch
High-output trigger-start torch head · heavy-duty head, fits a propane tank · for soldering and brazing · torch head only, fuel sold separately
The TS8000 is the torch most plumbers carry. Instant trigger-start ignition (even in the cold), a run-lock so you’re not holding the trigger, and an adjustable swirl flame you can dial from a pencil tip to a wide flame for bigger pipe. Pair it with MAP-Pro gas and it heats joints fast. Buy the head; add fuel separately.
- Pressure-regulated design burns consistently in any position — overhead, sideways, inverted — which matters on real job sites.
- Ultra-swirl flame and high BTU output handle large-diameter copper up to 4 in. with MAP-Pro gas.
- Run-lock button keeps the flame on hands-free when both hands are on the pipe.
- Dual-fuel (MAP-Pro and propane) gives flexibility at the supply house.
- Torch head only — you still buy a fuel cylinder separately.
- Cast aluminum body adds durability but also weight versus lighter heads.
- Higher price than basic torch-only options; overkill for simple 1/2 in. repairs.
Verdict: Best for working plumbers who need consistent all-position performance on 1/2 in. to 4 in. copper and occasional brazing.
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Best All-in-One Kit
Bernzomatic Basic Plumbers Kit
Bernzomatic Basic Plumbers Kit — check the listing for the current box contents before you order
If you just need to fix a joint or two, a basic plumbers kit is the cheapest way in. You get less flame than the TS8000 and less control over it, but for occasional home repairs on standard 1/2″ and 3/4″ copper that is usually enough. One caution: Bernzomatic sells several kits under similar names and the contents change, so read the box contents on the listing before you order and buy solder and flux separately if they are not in there.
The Amazon listing for this kit (Bernzomatic model WK2301) does not publish its box contents, flame type or fuel, so we make no claim about them — read the listing before you order and budget for solder and flux separately.
Verdict: Buy it only if the listing you see spells out what is in the box. It may well be the cheapest way in — but we will not call a kit the best starter option when its contents are not published. If it does not say, build the kit yourself from the list below; you will know exactly what you own.
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If you sweat copper for a living, I send an occasional note when I put gear like this through a week of work.
Building the kit yourself
Every piece a first copper repair actually needs, bought separately so you know what you have. Each of these is covered in its own section on this page:
- Torch. Bernzomatic TS8000 trigger-start torch — the one above.
- Fuel. Bernzomatic MAP-Pro cylinder — sold as a 2-pack.
- Solder and flux. Oatey plumbing solder and flux kit — lead-free solder and water-soluble flux together. Sand cloth and a flux brush are separate.
- Heat shield. FLASLD 12×12 flame protector pad — for soldering near joists or drywall.
- Fitting brush. General Tools 4-in-1 tube and fitting brush — clean pipe and cup before flux.
Nothing here is exotic; it is the same five things a plumber carries to a solder repair.
Best Fuel Upgrade
MAP-Pro Gas Cylinder
14.1 oz cylinder · 3,730°F in-air flame temperature · durable steel body · works with the Bernzomatic Digital Fuel Gauge · sold as a 2-pack
Not a torch, but the upgrade that matters: MAP-Pro burns hotter than standard propane, so joints reach soldering temperature noticeably faster — especially on 3/4″ and larger pipe. Run it with the TS8000 and you’ll spend less time waiting on each joint. Worth the small price bump over yellow-bottle propane.
- Burns hotter than standard propane, with a 3,730°F in-air flame temperature that speeds heat transfer on larger fittings.
- Works with the Bernzomatic Digital Fuel Gauge, so you can check how much fuel is left before starting a run.
- Slim 14.1 oz cylinder is easy to handle in tight spaces.
- Costs more per cylinder than propane — not worth it for simple 1/2 in. sweat joints.
- Slightly lower BTU content per unit volume than propane, so cylinders run out faster at the same settings.
- Single-use disposable cylinder; no refillable option in this size.
Verdict: Best fuel choice when you are sweating 3/4 in. or larger copper, brazing, or heat-treating where propane is too slow.
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What Torch Do You Use to Solder Copper Pipe?
A trigger-start propane or MAP-Pro torch. Plumbers reach for the Bernzomatic TS8000 head: it lights on the trigger even in the cold, holds a swirl flame overhead or inverted, and runs on either fuel. A propane torch solders 1/2-inch copper fine; MAP-Pro is the faster choice on 3/4-inch and up.
What Size Torch for 1/2-Inch and 3/4-Inch Copper?
One torch head covers both. A basic plumbers kit is usually enough for occasional repairs on standard 1/2-inch and 3/4-inch copper. If you are soldering 3/4-inch and larger often, run MAP-Pro through a high-output head like the TS8000 — with MAP-Pro that head handles copper up to 4 inches.
How to Solder (Sweat) a Copper Joint
- Cut the pipe square and deburr it, then sand the pipe end and the inside of the fitting until bright with emery cloth.
- Apply a thin, even coat of flux to both the pipe and fitting, then assemble the joint.
- Heat the fitting (not the solder) with the torch, moving around the joint to spread the heat evenly.
- Touch the solder to the joint seam — when the copper is hot enough, capillary action pulls the solder all the way around. Feed about a pipe-diameter’s length of solder.
- Let it cool undisturbed, then wipe the joint with a damp rag. Always keep a fire-safe cloth behind the work and a spray bottle nearby.
FAQ
Propane or MAP-Pro for soldering copper?
Both work for standard residential copper. Propane is cheaper and fine for 1/2″ lines; MAP-Pro burns hotter and brings larger pipe (3/4″ and up) to temperature faster, which makes soldering quicker and easier. For most DIYers a TS8000 with MAP-Pro is the sweet spot.
Why won’t my solder flow into the joint?
Almost always it’s not hot enough, or it wasn’t cleaned and fluxed. Solder flows toward heat by capillary action — heat the fitting evenly until flux sizzles, then touch the solder to the seam (not the flame). If it still beads up, the copper wasn’t sanded bright or you skipped flux.
Is it safe to solder pipes near wood framing?
Use a flame-resistant cloth or heat shield behind the joint, keep a spray bottle or extinguisher within reach, and never solder against dry framing without protection. Many house fires start hours after soldering — re-check the area before you leave, or use push-to-connect fittings where an open flame is risky.
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Bottom Line
For anyone soldering more than a single joint, the Bernzomatic TS8000 with MAP-Pro gas is the combo to get — instant ignition, hot flame, and a run-lock that saves your hand. Just patching one joint? The basic kit does the job. And where an open flame is too risky, remember push-to-connect fittings are a no-torch alternative.
Soldering is still the cheapest way to join copper if you already own the torch. If you’re doing it all day, a press tool is the trade-off worth pricing out. The tool is only half that decision though — the fittings price out very differently by brand, and for most shops that is what actually decides which system you commit to.
What Else Goes in the Bag
The torch is one line item. You cannot finish a joint with it on its own, and the walk-through above quietly assumes you own three more things.
Solder and flux in one box
This is steps one and two of the walk-through in a single package, minus the torch. The listing states the kit holds 1/4 lb of solder and 1.7 oz of flux, in a copper, bismuth, tin and silver alloy, and that it meets ASTM Standard B-32 and the requirements of the Safe Drinking Water Act — which is the part that matters on a drinking-water line. It is formulated for plumbing and potable water lines.
Note what is not in the box: no sand cloth and no flux brush, so pick those up separately (the fitting brush below handles the inside of the socket, not the outside of the pipe). The sand cloth is a Jet Swet open-mesh sanding cloth — 180 grit, an inch and a half wide, on a roll about fifteen feet long, and the open mesh lets the copper dust fall through instead of clogging the way a folded sheet of sandpaper does.
The brush is a pack of disposable acid brushes, thirty-six of them, which is far more than one repair needs — but flux wrecks a brush and nobody washes one out, so a bag lasts years. If you already have emery cloth in the garage, use it; what matters is bright copper, not the brand on the roll.
Check the Oatey plumbing solder and flux kit on Amazon →
A flame protection pad
Step five says keep a fire-safe cloth behind the work. This is that cloth. Silicone-coated fiberglass, 12 by 12 inches, rated by the listing to 1800°F, with a cut-out opening so it wraps around the pipe instead of just hanging behind it. Grommets and a snap button hold it where you put it, which matters when both your hands are already busy.
Check the FLASLD 12×12 flame protector pad on Amazon →
A fitting brush for the prep
Sand cloth cleans the outside of the pipe. It does not clean the inside of a fitting socket, and that is the half of the joint people skip right before the solder refuses to draw. This one cleans inside and outside surfaces, covers 1/2″ and 3/4″ I.D. tube plus 5/8″ and 7/8″ O.D. tube, and uses hardened steel bristles that resist flattening after a few dozen fittings.
Check the General Tools 4-in-1 tube and fitting brush on Amazon →
No striker on this list on purpose. Both torches above are trigger-start, so a spark lighter is one more thing to lose.
Related Plumbing Guides
- Best Pipe Cutters for Copper, PEX & PVC
- Best Push-to-Connect Fittings
- Best Teflon Tape for Plumbing
- Essential Plumbing Tools (Complete Guide)
Related: if the torch is fine and the solder still beads up, the problem is the joint — see why solder will not flow.
Related: a flame that dies part-way through a joint is usually the cylinder chilling, not a faulty torch — see why your torch keeps going out.
For the plumbers reading this
Most of this site is written for homeowners — this page clearly isn’t. If you’re in the trade and want the occasional straight-shooting note when I publish something like this (fittings comparisons, tool tests, code changes), drop your email. No spam, no course funnel, written by a licensed GA journeyman.
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