Heater Accessories
Accessories are where a sauna install stalls. The heater is on the pad, the room is clad, and the whole thing waits three weeks on a flue adapter nobody knew was needed. So we stock the small parts: stones, controls, chimney sections, clearance shields, safety rails and replacement elements for the heaters we sell.
Flue size is what we catch most. Harvia wood-burning stoves ship with 4.5 inch European pipe, so North American 6 inch pipe needs an adapter, and that is a part you want in the same box as the stove. Chimney kits, smoke pipes and roof fittings have their own section.
Clearances are the other one. A protective sheath lets a wood stove sit closer to combustible material than it otherwise could, and the stainless HIVE Reflector cuts wall-side clearance on HUUM’s round basket, both only in the configurations your current heater manual allows. Read the manual, not the internet, and when you are unsure round the clearance the safe way.
Stones ship with a heater order so we can match size and count to your model. Counts and sizes are model specific, so read your heater’s data label first rather than buying by the box.
Two more that get ordered late. A HUUM heater rated 12 kW or above needs the UKU extension box, and a panel extension cable moves a Xenio or Fenix controller well away from the heater. Both are separate orders.
Tell us your heater model at (844) 565-1113 and we will give you the part number.
Showing 1–50 of 106 resultsSorted by price: low to high
Harvia WX237 Temperature Sensor Cable | 30 ft Extension
$57.00The cable that comes in the box is fine until the control panel ends up on the far side of the changing room. This is the 30 foot Harvia sensor extension: colour-coded conductors so an electrician can land them without guessing, and an outer jacket built for the run between a hot room and a dry-side panel. Order it with the heater. Discovering you are eight feet short on install day is a wasted trip for somebody.
SaunaLife Rounded Sauna Stones | 33 lb Box | Only Sold With Heater
$58.50The flame makes heat. The stones make it sauna. Each box contains 33 lb of rounded 1 to 2 in olivine diabase selected for heat storage and soft steam. SaunaLife specifies two boxes for TITAN SL1 even though the heater’s installed stone capacity is 44 lb; the purchase quantity and loaded capacity are different numbers. We keep both numbers visible so the complete heater package is clear before checkout. Inspect, rinse, and stack stones exactly as the heater manual directs.
HUUM UKU-TEMP-SNSR
$65.00This is the replacement temperature sensor for all HUUM UKU Controls. Sensor cable sold separately.
Saunum Himalayan Salt Set | 7 Pink Salt Spheres for Saunum Air, Air L, Air Perfect and AirSolo
$69.00Seven pink Himalayan salt spheres, the same seven that ship inside every Saunum Air, Air L, Air Perfect and AirSolo. They sit in the unit’s Himalayan salt tray. Buy this as a replacement for spheres that have worn down, or as a spare set. 0.6 lb, supplied as a 5 x 4 x 1 in. pack.
Harvia WZ115120 Reducing Pipe, 4.6 in, Stainless Steel
$75.00Stainless reducing pipe that joins a smaller pipe to a larger one in the Harvia 4.6 in sauna chimney system, a precise, sealed transition for reliable draft.
IKI Square Protective Sheet | Halves Ceiling Safety Distance
$80.00If your ceiling is too low for the heater you want, this is the part that solves it. A 19.7 inch square stainless steel sheet that mounts above the heater and cuts the required safety distance to the ceiling by half. It also takes the moisture, heat and long-term wear that would otherwise land on your ceiling boards directly above the stones, which is the first place a sauna ceiling starts to look tired. Made in Finland.
Harvia WZ020115 Lead-Through Flange for Smoke Pipes
$81.00Stainless lead-through flange that collars a 4.6 in Harvia smoke pipe where it passes through a wall or ceiling, blocks smoke leakage, shields against heat, and finishes the penetration.
HUUM UKU Door Sensor | SP0032
$82.00Replacement door sensor and magnet for HUUM UKU controls. Part of the remote-start safety system, and it stops the heater working against an open door. Not returnable.
HUUM UKU Control Panel Cable | 33 ft, SP0035
$82.0033 ft replacement low-voltage cable that connects the HUUM UKU display panel to the main module. Not returnable.
Harvia SAA00101 Sauna Drip Tray | Steel, for Floor-Standing Heaters
$87.00Water misses the stones. It happens to everybody, usually around the third ladle, and it lands on the floor under the heater. The SAA00101 is Harvia’s steel catch tray for floor-standing heaters: 17.2 inches wide, 15.2 deep, and nine tenths of an inch tall, so it sits under the base instead of announcing itself. Steel, black, 3.1 pounds. It is the kind of part nobody adds to the first order and most people want by the second winter, so we would rather you saw it now.
SaunaLife TITAN SL1 Heater Guard | European Alder
$89.00TITAN already includes one of these. Add a second or third only when you want more of the heater wrapped in warm European alder. The curved SaunaLife TITAN SL1 Heater Guard clips to the stone basket and helps reduce accidental contact with the hot metal cage. We separated it as an add-on so the included guard never becomes a surprise double purchase. It does not change any required heater clearance and fits TITAN SL1 only.
HUUM SP0017 | HIVE Wood 17 & 17 LS Replacement Door Glass
$94.00Replacement door glass for HUUM HIVE Wood 17 and 17 LS wood-burning stoves. Ordered as a spare part; not returnable.
Harvia WZ Smoke Pipe, 4.6 in, for Wood-Burning Sauna Stoves (7.9 in, 19.7 in, 3.3 ft)
Price range: $101.00 through $212.00CE-certified 4.6 in (4.5″) Harvia smoke pipe connecting wood-burning sauna stoves to the chimney. Three lengths (7.9 in / 19.7 in / 3.3 ft) in stainless or black steel. Fits all Harvia wood stoves except the Harvia 50.
HUUM UKU Surface Mounting Frame | UKU Glass, Mirror and Gold
$103.00Stainless steel bezel that mounts a HUUM UKU Glass, Mirror or Gold control panel flat on the wall, with no recess cut into the wall.
Harvia WZ115155 Wood Stove Pipe Adapter 4.5″ Euro to 6″ USA
$105.00All Harvia wood-burning sauna stoves are equipped with standard European exhaust piping that measures at 4.6 in (4.5″). This adapter is required for North American 6.2 in (6″) piping conversion.
HUUM Protective Floor Plate | HIVE Flow
$106.00Floor plate for HUUM HIVE Flow stoves standing on wood or other combustible flooring, 16.5 x 17.7 in with a 0.8 in upturned edge. The manual states it suits all HIVE Flow heaters.
HUUM DROP Replacement Heating Elements | SP0003 1.5 kW & SP0004 2.0 kW
$109.00Current HUUM replacement elements for DROP electric heaters: SP0003 is the 1.5 kW element and SP0004 is the 2.0 kW element. Element counts and combinations are model-specific. Confirm heater data label and the current HUUM element matrix before ordering.
Saunum Air Deflector
$109.00Genuine Saunum air deflector for the Saunum AIR series. The Saunum Air Deflector redirects heated air away from your feet when the heater is in close proximity to the bather for a more comfortable bathing experience.
HUUM Drip Tray | DROP Series
$126.00Drip tray for HUUM DROP series heaters. Sits under the heater to catch water running off the stones so it does not pool on the sauna floor.
HUUM DROP Heat Diverter, Retainer & Upgrade Kit
$130.00Current DROP heat-management hardware for guiding heat into the room and keeping elements correctly separated. The current DROP heater package already includes its model-appropriate reflector, heat diverter, retainers, and spacers; order this only for a compatible older installation or confirmed replacement need.
Harvia HSP1 Embedding Flange for Harvia Spirit | Stainless Steel
$131.00When a Harvia Spirit is recessed into a bench, the HSP1 is the stainless flange that finishes the opening. Harvia’s description is that it ‘ensures a neat finish and also acts as a thermal radiation shield for your benches’; Note that it protects the bench structures from water and heat and that the stainless steel is easy to keep clean. It measures 22.44 x 17.32 in, weighs 1.43 lb, and is designed, engineered and made in Finland.
HUUM 75-Foot UKU Extension Cables | Control & Sensor
Price range: $143.00 through $176.00Current 75-foot HUUM UKU low-voltage extension cables. CONTROL-75 extends the UKU control panel cable; SENSOR-75 extends the temperature/door-sensor cable. Select the circuit you are extending rather than treating the two cables as interchangeable.
Harvia Xenio & Fenix Data-Cable Extension – 65 ft WX319
$144.00Relocate your Harvia Xenio or Fenix control panel up to 65 ft with this plug‑and‑play RJ‑10 extension cable. Genuine Harvia quality ensures reliable connections.
Harvia WL300PC Chimney Cover for Cilindro Wood-Burning Stoves, Chrome
$148.00Chrome steel chimney cover for Harvia Cilindro wood-burning stoves. Filled with 4–6″ stones it absorbs radiant heat and considerably reduces required safety distances. 20″ tall, 41.9 lb stone capacity.
Harvia WZ115030SP Damper Plate for Wood-Burning Sauna Stoves
$165.00Stainless damper plate for the 4.6 in smoke pipe of Harvia wood-burning stoves. Regulates draft, slows the burn rate, and keeps more heat in the sauna. 13 in section.
Saunum AutoLeil Pre-Bent Pipe | Required Primary Pipe
$173.00Read this before you order an AutoLeil: the pipe is not in the box. The Saunum automatic water dispensing system needs this pre-bent primary pipe to run, and it is a separate line on the order. Coming pre-bent is the point. It arrives in the shape it needs to be in, which takes the fabrication step out of the install and lets it fit a range of room layouts without anyone cutting and forming steel on site.
SaunaLife TITAN SL1 Heat Shield
$189.00Two inches can decide whether a cabin layout works. This stainless Heat Shield clips onto TITAN SL1 and reduces the required cabin side and rear clearance from 6 to 4 in. Front clearance stays 16 in and overhead clearance stays 50 in. The shield must remain at least 1 in from combustible surfaces. We are repeating the limitation because it matters: the Heat Shield does not reduce TITAN clearances inside either SaunaTrekker tent.
Harvia HPC7 Embedding Flange | Cilindro 10.5 kW, Stainless Steel
$204.00Dropping a Cilindro through the bench is the detail that makes a sauna look designed rather than assembled. The HPC7 is the stainless steel collar that makes it possible on the 10.5 kW model: it lines the cut-out, shields the surrounding timber from radiant heat, and lets the hole be only slightly larger than the heater itself, so the finished result reads as one continuous surface with a heater rising out of it.
Narvi Stone Cage 250×400 Black | Flue-Mounted Stone Basket for Narvi Wood Stoves
$207.00A black rustproof steel cage, 9.8 in. across and 15.8 in. tall, that holds a column of stones around the connective flue above a Narvi wood stove. Narvi’s reasoning: the heat of the flue gets used better, and the steam lasts longer because the water flows from the cage down onto the heater’s own stones. Cages can be stacked. Stones are not included, and the 4–6 in stones Narvi specifies for the heater basket are too large for the cage.
Harvia HPC2 Embedding Flange | Cilindro 6 and 8 kW, Stainless Steel
$210.00The flange is what turns a heater sitting on a bench into a heater built into one. Stainless steel, 19.7 inches across, made for the 6 and 8 kW Cilindro. It shields the surrounding timber from radiant heat, which is what lets the cut-out sit close to the heater body instead of standing off at a safe but ugly distance. The finished detail is a clean surface with a cylinder rising through it.
HUUM WaterEx | HIVE Wood Water Heat Exchanger
$211.00HUUM water heat exchanger for HIVE wood-burning sauna stoves. Heats water while the sauna is being heated, with 3/4 in NPT male pipes for the water tank. Mounts on the stove’s rear edge or on the sides.
Harvia WHM22 Rubber Rain Collar for Tilted Roofs (Rain Flange, Black)
$222.00Genuine Harvia (SPWHM22) tilted rubber rain flange, replacement weather seal for WHP steel chimneys on pitched roofs. Black rubber. Non-returnable replacement part.
Harvia WHM24 Rain Collar for Flat Roofs & Barrel Saunas (Symmetric Rain Flange, Black)
$260.00Genuine Harvia (SPWHM24) symmetric rubber rain flange, replacement weather seal for WHP steel chimneys on flat roofs and barrel saunas. Non-returnable replacement part.
Harvia HSP3M Safety Railing for Harvia Spirit | Heat-Treated Birch
$267.00A bar of black-painted heat-treated birch on stainless steel brackets that fastens directly to a Harvia Spirit. Harvia’s own line is that the birch surface is always safe to touch. It measures 21.5 x 17.7 x 5.1 in and weighs 4.4 lb. Specified for the Spirit SP60/90.
Harvia HPC3 Safety Railing | Cilindro 6 and 8 kW, Heat-Treated Birch
$274.00A Cilindro is a cylinder of hot steel standing at shin height in a small dark room, and the first time somebody stands up too fast next to one they find that out. The HPC3 is Harvia’s own guard for the 6 and 8 kW Cilindro: four heat-treated birch arches held off the heater on stainless steel mounts, 20.1 inches square. It keeps skin off the shell without hiding the heater, and the birch reads as part of the room rather than as safety equipment bolted on.
HUUM DROP Safety Rail | Rail D
$291.00Model-matched wood safety railing for HUUM DROP electric heaters. Rail D adds a physical buffer and a warm wood accent around the rounded steel basket without replacing any required heater clearance.
HUUM Reflect C
$294.00Thanks to the placement of the HUUM reflector panel on the heater, it is possible to achieve half smaller safety distances from the walls. It is made of stainless steel and is mounted on the side of the heater. The reflectors can be connected to each other.
HUUM Reflect S | STEEL Heater Reflector Panel
$294.00Stainless steel reflector panel that hooks onto the side of a HUUM STEEL heater. HUUM says it makes it possible to achieve half smaller safety distances from the walls. Sold as a single panel; reflectors can be connected to each other.
Harvia WHM25 Chimney Vapor Barrier
$300.00Vapor-barrier plate that seals the ceiling penetration around a Harvia WHP steel chimney. Stops moisture from entering the roof structure and cuts heat loss. 50 × 19.7 in plate, 8.3 in opening.
HUUM HIVE Reflector | HIVE & HIVE Mini
Price range: $302.00 through $328.00Stainless-steel reflector panel for reducing the required wall-side clearance of the compatible HIVE heater. Choose Reflect H for full-size HIVE or Reflect HM for HIVE Mini. Use only in the configurations and quantities allowed by the current heater manual.
HUUM HIVE Safety Rail | Rail H & Rail HM
Price range: $322.00 through $396.00Curved wood safety railing that adds a physical buffer and warm visual detail around HUUM’s round stone baskets. Choose Rail H for full-size HIVE or Rail HM for HIVE Mini.
HUUM Flange D | DROP Embedding Flange
$322.00Stainless steel embedding flange for HUUM DROP heaters, for installations where the stove sits partly inside the sauna bench. Covers the cut edges of the platform boards.
Harvia HL3S Safety Rail for Virta HL70 and HL90 | Wood
$330.00The shallow rail in Harvia’s Virta family: 22.6 in wide, 17.8 in deep, 3.9 in high, in wood, CE and EAC certified. Harvia’s railing sheet lists the HL3S against the Virta HL70 and HL90, and it is specified ‘for use with Virta HL70/90’. Harvia’s own line is that the wood design ‘will help protect you from coming into contact with the hot exterior of the heater’, that is the whole job. Ships as rail plus installation manual.
HUUM Flange CS | CLIFF & STEEL Embedding Flange
$331.00Stainless steel embedding flange for HUUM CLIFF and STEEL heaters, covering the cut wooden edges when the heater is set partly into the sauna platform. Fits a 16.7 x 16.7 in opening. Not for the Mini versions of either range.
HUUM HIVE Air Tunnel | Stainless Steel, Faster Heat-Up
$331.00Check the date on your heater before you buy this one. Every HIVE built since April 2024 already has an Air Tunnel inside it. If yours is older, this is the stainless steel insert that sits down among the stones and gives the heat a channel to climb through: HUUM rates it at a 25 percent shorter heat-up, longer element life, and fewer stones needed to fill the basket. It fits every HIVE and HIVE Mini electric model. A small part that changes how long you wait to get in.
Harvia HL3M Safety Rail for Virta HL110, HL70SA and HL90SA | Wood
$341.00The middle rail in Harvia’s Virta family: 22.6 in wide, 20.6 in deep, 3.9 in high, wood, CE and EAC certified. Harvia’s railing sheet lists the HL3M against the Virta HL110, HL70S, HL70SA, HL90S and HL90SA, the 10.5 kW Virta and the steam-equipped Combi models, and it is specified ‘for use with Virta HL110/HL70SA/HL90SA’. Ships as rail plus installation manual.
Harvia HL3L Safety Rail for Virta Combi HL110S/SA | Wood
$351.00The deep rail in Harvia’s Virta family: 22.6 in wide, 23.5 in deep, 3.9 in high, wood, CE and EAC certified. Harvia’s railing sheet lists the HL3L against the Virta Combi HL110S and HL110SA, and the 10.5 kW Virta Combi we sell is the HL110SA, an exact model-code match rather than a family guess. Ships as rail plus installation manual.
Harvia WL110 Protective Bedding for Wood Sauna Stoves | 22 x 25 in
$356.00An aluminum-zinc-coated steel plate with adjustable feet that goes under a wood-burning sauna stove. Harvia’s instruction sheet is direct about when it is not optional: “the protective bedding must be used when the stove is installed on e.g. tile floor with a water barrier treatment.” Harvia lists it for its wood-burning stove range with two exceptions, the 20 ES Pro/S and the Linear 22 ES. It measures 22 x 25 in and 2–3 in high, weighs 26.5 lb, and the feet let you level a stove on a floor that slopes to a drain.
Narvi Installation Base 550×620 Black | Adjustable Floor Base for Narvi Wood Stoves
$357.00A rustproof steel base, 21.7 x 24.4 in., with legs that adjust from 2.8 to 3.7 in. Narvi’s manuals make a base mandatory in two named cases: a floor of combustible material or a tiled floor, and any floor with underfloor heating pipes or cables beneath the stove. On a sloping floor the adjustable legs are also what levels the stove. 16.5 lb, black, designed and made in Finland.
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