Vessel only, or vessel + Heat Exchange Kit?
Vessel only is the bare welded HLT — for brewers replacing or expanding a hot side who already own the plumbing and coil. Heat Exchange Kit adds the HERMS coil + hardware to make it HERMS-ready out of the box.
Six steps. Strike water through sparge.
The HLT carries two roles across a HERMS brew day: hot water reservoir for strike + sparge, and heat exchanger for the mash recirculation loop. The bottom drain handles all liquid transfer; the HERMS coil mount accepts a serviceable, replaceable coil for mash temperature control.
Fill — charge with brewing water
Fill through the lid TC port (or a hose through the top). Etched internal markings let you target volume to within a half-gallon by eye.
Heat — ULWD element brings strike
1.5" TC element port fits any standard tri-clamp ULWD element. Heat to your strike temperature for the grain bill, then hold.
Strike — dose the mash tun
Drain measured strike water through the bottom TC drain into the mash tun. Gravity-feed if the HLT is elevated, or pump if it sits on the floor.
Step mash — HERMS heat exchange
Mash wort pumps from the mash tun into the submerged HERMS coil, returns to the mash tun at HLT temperature. The HLT element holds water temperature; the coil holds the mash temperature through programmed steps.
Sparge — feed the mash tun
Slow draw through the bottom drain into the mash tun for fly sparge. Volume tracks down the etched markings as you go.
CIP — spray + drain
Bottom drain pulls the final rinse out cleanly. Spray ball through the lid TC port if you want closed-loop CIP — same chemistry as the mash tun and boil kettle.
HERMS-ready when configured.
Heat Exchange Kit adds the HERMS coil + plumbing hardware. Compression-to-tri-clamp coil mount means the coil is serviceable and replaceable — no permanent welds inside the vessel. Vessel only is for brewers replacing an existing HLT and bringing their own coil + hardware.
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TIG-welded HLT — 304 stainless Fully TIG-welded, thickest walls in the industry (1.2 mm in every size). Mirror polished inside and out. Sloped bottom carries every last drop to the drain port — no tilting, no dead volume.
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1.5" TC bottom drain port Welded at the low point of the sloped bottom and brought forward in line with the side ports. Doubles as the CIP return path. Valve not included — it’s in the Heat Exchange Kit.
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1.5" TC element port · side mount Welded TC ferrule sized for any standard tri-clamp ULWD element. Drop in, clamp down, plug controller.
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Compression-to-tri-clamp HERMS coil mount Bulkhead port sized for a tri-clamp HERMS coil. The coil bolts in via compression-to-TC adapter — serviceable, replaceable, no permanent welds inside the vessel.
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CIP port in the lid — included Welded tri-clamp port in the lid for filling, sight-checking, or CIP spray ball mount.
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HERMS coil + element + 4 valves + dip tubes + caps + clamps + gaskets In Heat Exchange Kit Not included with Vessel only — bring your own coil, element, and plumbing. The Heat Exchange Kit bundles the size-matched HERMS coil (small for 10G/15G/20G, large for 30G/50G), 2× compression-to-TC coil adapters, 5,500W ULWD brewing element, 4× 1.5" TC butterfly valves, 2× press-in dip tubes, 2× TC blank caps, and 7× TC clamps + gaskets.
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Etched internal volume markings Stamped right into the interior wall. Read strike + sparge volumes by eye.
*Heat Exchange Kit bundles a 5,500W (240V) ULWD element. 50G vessel is dual-element capable; current HERMS controller is single-element, so the kit ships with one element. Power cord ships with the HERMS controller, not with the element. Pricing assumes vessel-only build; Heat Exchange Kit priced separately ($599 small coil for 10G/15G/20G · $639 large coil for 30G/50G).
Specs by size.
10 US gal (38 L) · 35 cm (13.8") Ø × 40 cm (15.7") H
~5 gal mash · strike + sparge
1.5" TC · sized for 240V (5,500W) ULWD
304 stainless · fully TIG-welded · mirror polished inside & out
1.2 mm · thickest in industry at this size
1.5" TC from the sloped bottom, brought forward in line with the side ports · valve in Heat Exchange Kit
Compression-to-tri-clamp · serviceable, replaceable
1.5" TC · spray ball mount · included on every kettle
10G Mash Tun + 10G Boil Kettle
15 US gal (57 L) · 40 cm (15.7") Ø × 45 cm (17.7") H
~7.5 gal mash · strike + sparge
1.5" TC · sized for 240V (5,500W) ULWD
304 stainless · fully TIG-welded · mirror polished inside & out
1.2 mm · thickest in industry at this size
1.5" TC from the sloped bottom, brought forward in line with the side ports · valve in Heat Exchange Kit
Compression-to-tri-clamp · serviceable, replaceable
1.5" TC · spray ball mount · included on every kettle
15G Mash Tun + 15G Boil Kettle
20 US gal (76 L) · 45 cm (17.7") Ø × 48 cm (18.9") H
~10 gal mash · strike + sparge
1.5" TC · sized for 240V (5,500W) ULWD
304 stainless · fully TIG-welded · mirror polished inside & out
1.2 mm · thickest in industry at this size
1.5" TC from the sloped bottom, brought forward in line with the side ports · valve in Heat Exchange Kit
Compression-to-tri-clamp · serviceable, replaceable
1.5" TC · spray ball mount · included on every kettle
20G Mash Tun + 20G Boil Kettle
30 US gal (114 L) · 50 cm (19.7") Ø × 60 cm (23.6") H
~20 gal mash · strike + sparge
1.5" TC · sized for 240V (5,500W) ULWD
304 stainless · fully TIG-welded · mirror polished inside & out
1.2 mm · thickest in industry
1.5" TC from the sloped bottom, brought forward in line with the side ports · valve in Heat Exchange Kit
Compression-to-tri-clamp · serviceable, replaceable
1.5" TC · spray ball mount · included on every kettle
30G Mash Tun + 30G Boil Kettle
50 US gal (189 L) · 60 cm (23.6") Ø × 67 cm (26.4") H
~1 BBL mash · strike + sparge
1.5" TC · sized for 240V (5,500W) ULWD · vessel is dual-element capable
304 stainless · fully TIG-welded · mirror polished inside & out
1.2 mm · thickest in industry
1.5" TC from the sloped bottom, brought forward in line with the side ports · valve in Heat Exchange Kit
Compression-to-tri-clamp · serviceable, replaceable
1.5" TC · spray ball mount · included on every kettle
50G Mash Tun + 50G Boil Kettle · 1 BBL pilot
More DrainPro vessels.
Same architecture, same fittings, same drain. Pair the HLT with the matching Mash Tun + Boil Kettle for a full HERMS hot side — clamps and gaskets carry across every size.
DrainPro Mash Tun — Bottom-Drain Brewing Vessel
Bottom-drain mash tun with a fine false bottom and recirculation ports. 10 to 50 gal.
DrainPro Boil Kettle - Bottom-Drain Brewing Vessel
Bottom-drain boil kettle with a whirlpool port and a tri-clamp element port. 10 to 50 gal.
DrainPro HLT Heat Exchange Kit
5500W element and HERMS coil that turn a DrainPro HLT into the heart of a HERMS brewery.
Sparge Arm
Tri-clamp sparge arm that spreads sparge water evenly over the grain bed.
What our customers are saying
Real reviews from real brewers — pulled live from Judge.me.
About the DrainPro HLT.
Will I be charged anything at the border?+
No. Every US order ships fully duty-paid. We clear it and prepay the duties, tariffs and brokerage before it ships, and the courier delivers it like a domestic parcel. The price you see is the price you pay.
Our guarantee: if you're ever charged import duties or fees on a Bräu Supply order, send us the receipt and we refund them, no questions.
Alaska, Hawaii and international orders are quoted before you buy — contact us.
Do I really need a separate HLT?+
For full HERMS or RIMS architectures, yes — the HLT both holds your strike + sparge water and acts as the heat exchanger for mash temperature control via the submerged coil. For single-vessel or BIAB workflows, the HLT is optional. Brewers running step mashes or controlled fermentation profiles benefit most from the dedicated heat exchanger.
Which size should I buy?+
Match the HLT size to your mash tun — a 20G mash tun pairs with a 20G HLT, etc. Sparge water volume runs roughly equal to mash volume, with headroom for strike. 10G for 5-gal batches, 15G for 7–8 gal, 20G for 10-gal, 30G for double-batch days, 50G for ~1 BBL pilot.
Why a serviceable HERMS coil mount?+
Most HLTs in the market ship with the HERMS coil permanently welded inside — when it fouls, scales, or fails, the entire vessel is dead. The DrainPro HLT uses a compression-to-tri-clamp coil mount: the coil bolts in via a compression-to-TC adapter, with no permanent welds. Pull it out for inspection or cleaning, swap it for a different coil geometry, or replace it years down the line — the vessel itself outlives the coil.
How does the HERMS coil mount work?+
The HLT ships with a bulkhead port sized for a compression-to-tri-clamp adapter. The HERMS coil bolts in through that adapter — no permanent welds inside the vessel, no proprietary fittings. The coil is fully serviceable: pull it out for cleaning or replace it without affecting the vessel itself. Coil + adapter included in the Heat Exchange Kit.
What's the difference between Vessel only and Heat Exchange Kit?+
Vessel only is the bare welded HLT with every TC port welded in — for brewers replacing an existing HLT who own a HERMS coil, element, and plumbing already. Heat Exchange Kit adds everything to run a HERMS brewhouse: size-matched HERMS coil (small for 10G/15G/20G, large for 30G/50G), 2× compression-to-TC coil adapters, 5,500W ULWD brewing element, 4× 1.5" TC butterfly valves, 2× press-in dip tubes, 2× TC blank caps, and 7× TC clamps + gaskets.
Is the element included?+
Yes — in the Heat Exchange Kit. The kit ships with a matched 5,500W ULWD brewing element, sized for 240V. Vessel only buyers should source their own TC element. Power cord ships with the HERMS controller, not with the element.
What ships, and when?+
Ships from our Vancouver, BC workshop. Most orders out in 5–10 days, free shipping to the lower 48. 10G, 15G and 20G ship via standard courier; 30G and 50G ship LTL freight (palletized, with tracking and a delivery appointment).
What's the warranty?+
2-year warranty on the vessel, every weld and TC port, and on the controller and pump where they're included.
Heating element: 2 years against defects. Not covered: dry-firing (running the element without liquid covering it), and heat or melt damage at the twist-lock plug from a loose or improper connection — a proper, fully seated connection has to be maintained.
Temperature probe: 6 months — it's a consumable. Gaskets, clamps and O-rings are consumables too; replacements for all of these are in stock and cheap.
Lifetime parts support on everything we build — serviced, not replaced.
The drain is
the difference.
Heat exchanger for HERMS. Serviceable compression-to-tri-clamp coil mount. Designed and assembled in Vancouver, BC. 2-year warranty + lifetime parts support.