Shop Resideo Sale
Filter menu expanded

Filters

5,776 items
Reset

SORT

Product Availability
–

Show In Stock Only (700)

Product Type
–

Adapter (1)
Adaptor (1)
Aerator (2)
Anode Rod (1)
Assembly (5)
Bracket (5)
Burner (1)
Burner Assembly (5)
Button (1)
Button Kit (1)

Review Score
–

(302)
(33)
(6)
(1)
(4)

Price Range
–

Under $1 (133)
$1 to $5 (478)
$5 to $10 (765)
$10 to $15 (451)
$15 to $20 (380)
$20 to $25 (303)
$25 to $30 (307)
$30 to $35 (250)
$35 to $40 (184)
$40 to $45 (141)

Tankless Replacement Parts

Help Face
Need a little help?
5776 items
Grid
List
Compare
Product Image of Rod Holder Gasket, 100074219
Rod Holder Gasket, 100074219
SKU: 100074219
Takagi
SKU: 100074219
Brand: Takagi
(27)
$5.99 each
In Stock
Get 60 by Tue, Nov 17
In Stock
Get 60 by Tue, Nov 17
Compare
Product Image of Flow Sensor for Tempra B, Tempra Plus and Tempra Trend, 286461
$55.37 each
In Stock
Get 171 by Tue, Nov 17
In Stock
Get 171 by Tue, Nov 17
Compare
Product Image of Electrode/Flame Rod Assembly, 105000232
Electrode/Flame Rod Assembly, 105000232
SKU: 105000232
Rinnai
SKU: 105000232
Brand: Rinnai
(9)
$45.62 each
In Stock
Get 100 by Tue, Nov 17
In Stock
Get 100 by Tue, Nov 17
Compare
Product Image of Flame Rod, 100074673
Flame Rod, 100074673
SKU: 100074673
Takagi
SKU: 100074673
Brand: Takagi
(16)
$11.20 each
In Stock
Get 47 by Tue, Nov 17
In Stock
Get 47 by Tue, Nov 17
Compare
Product Image of Flame Rod FL1, RTG20212BE
Flame Rod FL1, RTG20212BE
SKU: RTG20212BE
Rheem
SKU: RTG20212BE
Brand: Rheem
(17)
$15.92 each
In Stock
Get 135 by Thu, Nov 19
In Stock
Get 135 by Thu, Nov 19
Compare
Product Image of Igniter Rod, 100074222
Igniter Rod, 100074222
SKU: 100074222
Takagi
SKU: 100074222
Brand: Takagi
(11)
$9.46 each
In Stock
Get 84 by Tue, Nov 17
In Stock
Get 84 by Tue, Nov 17
Compare
Product Image of Water Filter Assembly, H98-510-S
Water Filter Assembly, H98-510-S
SKU: H98-510-S
Rinnai
SKU: H98-510-S
Brand: Rinnai
(134)
$9.87 each
In Stock
Get 139 by Tue, Nov 17
In Stock
Get 139 by Tue, Nov 17
Compare
Product Image of Flame Rod Electrode Kit for R75/94/RC80/98, 104000192-K
Flame Rod Electrode Kit for R75/94/RC80/98, 104000192-K
SKU: 104000192-K
Rinnai
SKU: 104000192-K
Brand: Rinnai
(13)
$38.78 each
In Stock
Get 53 by Tue, Nov 17
In Stock
Get 53 by Tue, Nov 17
Compare
Product Image of Ignitor Coil, RTG20235BC
Ignitor Coil, RTG20235BC
SKU: RTG20235BC
Rheem
SKU: RTG20235BC
Brand: Rheem
(5)
$20.30 each
Out of Stock
Get it by Tue, Dec 1 - Tue, Dec 8
Out of Stock
Get it by Tue, Dec 1 - Tue, Dec 8
Compare
Product Image of Gas Valve Assembly, 106000117
Gas Valve Assembly, 106000117
SKU: 106000117
Rinnai
SKU: 106000117
Brand: Rinnai
(8)
$246.04 each
In Stock
Get 23 by Tue, Nov 17
In Stock
Get 23 by Tue, Nov 17
Compare
Product Image of Recirculation Push Button, RPB200
Recirculation Push Button, RPB200
SKU: RPB200
Rinnai
SKU: RPB200
Brand: Rinnai
(20)
$38.06 each
In Stock
Get 129 by Tue, Nov 17
In Stock
Get 129 by Tue, Nov 17
Compare
Product Image of Electrode IG, RTG20212BD
Electrode IG, RTG20212BD
SKU: RTG20212BD
Rheem
SKU: RTG20212BD
Brand: Rheem
(6)
$15.03 each
In Stock
Get 1 by Tue, Nov 17
In Stock
Get 1 by Tue, Nov 17
Compare
Product Image of Flame Rod FL2 with Wire and Gasket, RTG20212BG
Flame Rod FL2 with Wire and Gasket, RTG20212BG
SKU: RTG20212BG
Rheem
SKU: RTG20212BG
Brand: Rheem
(17)
$18.69 each
In Stock
Get 57 by Thu, Nov 19
In Stock
Get 57 by Thu, Nov 19
Compare
Product Image of Ignition Plug w/ Gasket and Plug Sleeve, SKJ7381
$36.54 each
In Stock
Get 58 by Tue, Nov 17
In Stock
Get 58 by Tue, Nov 17
Compare
Product Image of Flame Rod/Electrode Kit (VC), 104000240
Flame Rod/Electrode Kit (VC), 104000240
SKU: 104000240
Rinnai
SKU: 104000240
Brand: Rinnai
(20)
$83.27 each
In Stock
Get 37 by Tue, Nov 17
In Stock
Get 37 by Tue, Nov 17
Compare
Product Image of Inlet Water Filter, 100074382
Inlet Water Filter, 100074382
SKU: 100074382
Takagi
SKU: 100074382
Brand: Takagi
(15)
$8.88 each
In Stock
Get 122 by Tue, Nov 17
In Stock
Get 122 by Tue, Nov 17
Compare
Product Image of Replacement Cartridge for Product Preservers PP-AS20, 100291510
$92.02 each
In Stock
Get 53 by Tue, Nov 17
In Stock
Get 53 by Tue, Nov 17
Compare
Product Image of Flow Adjustment Valve w/ Flow Sensor, 100074624
Flow Adjustment Valve w/ Flow Sensor, 100074624
SKU: 100074624
Takagi
SKU: 100074624
Brand: Takagi
(10)
$101.20 each
In Stock
Get 41 by Tue, Nov 17
In Stock
Get 41 by Tue, Nov 17
Compare
Product Image of Ignitor for RL75i, RL94i (VC), 105000180
Ignitor for RL75i, RL94i (VC), 105000180
SKU: 105000180
Rinnai
SKU: 105000180
Brand: Rinnai
(16)
$67.54 each
In Stock
Get 24 by Tue, Nov 17
In Stock
Get 24 by Tue, Nov 17
Compare
Product Image of Neutralization Replacement Kit, RTG20239BU
Neutralization Replacement Kit, RTG20239BU
SKU: RTG20239BU
Rheem
SKU: RTG20239BU
Brand: Rheem
(11)
$106.08 each
Out of Stock
Get it by Tue, Dec 1 - Tue, Dec 8
Out of Stock
Get it by Tue, Dec 1 - Tue, Dec 8
Compare
Product Image of Mixing Valve, RTG20299AV
Mixing Valve, RTG20299AV
SKU: RTG20299AV
Rheem
SKU: RTG20299AV
Brand: Rheem
(9)
$103.41 each
In Stock
Get 2 by Fri, Nov 20
In Stock
Get 2 by Fri, Nov 20
Compare
Product Image of Electrode, Flame Rod, & Gasket Kit, 104000011-K
Electrode, Flame Rod, & Gasket Kit, 104000011-K
SKU: 104000011-K
Rinnai
SKU: 104000011-K
Brand: Rinnai
(58)
$29.02 each
In Stock
Get 41 by Tue, Nov 17
In Stock
Get 41 by Tue, Nov 17
Compare
Product Image of Water Control Valve, RTG20164L
Water Control Valve, RTG20164L
SKU: RTG20164L
Rheem
SKU: RTG20164L
Brand: Rheem
(27)
$138.36 each
In Stock
Get 4 by Tue, Nov 17
In Stock
Get 4 by Tue, Nov 17
Compare
Product Image of Water Supply Filter Plug Assembly, 107000317
Water Supply Filter Plug Assembly, 107000317
SKU: 107000317
Rinnai
SKU: 107000317
Brand: Rinnai
(12)
$11.55 each
In Stock
Get 74 by Tue, Nov 17
In Stock
Get 74 by Tue, Nov 17
Compare
Product Image of Isolation Valve Kit, 107000284
Isolation Valve Kit, 107000284
SKU: 107000284
Rinnai
SKU: 107000284
Brand: Rinnai
(6)
$127.76 each
In Stock
Get 47 by Tue, Nov 17
In Stock
Get 47 by Tue, Nov 17
Compare
Product Image of Water Flow Servo Valve Kit (VC), 104000238
Water Flow Servo Valve Kit (VC), 104000238
SKU: 104000238
Rinnai
SKU: 104000238
Brand: Rinnai
(13)
$107.34 each
In Stock
Get 26 by Tue, Nov 17
In Stock
Get 26 by Tue, Nov 17
Compare
Product Image of Pressure Relief Valve Replacement, PRV-1
$35.74 each
In Stock
Get 78 by Tue, Nov 17
In Stock
Get 78 by Tue, Nov 17
Compare
Product Image of FL/IG Gasket Kit, RTG20212BH
FL/IG Gasket Kit, RTG20212BH
SKU: RTG20212BH
Rheem
SKU: RTG20212BH
Brand: Rheem
(7)
$8.28 each
Out of Stock
Get it by Tue, Dec 1 - Tue, Dec 8
Out of Stock
Get it by Tue, Dec 1 - Tue, Dec 8
Compare
Product Image of Fan Motor All Assembly for RL75/94e (VC), 104000241-K
Fan Motor All Assembly for RL75/94e (VC), 104000241-K
SKU: 104000241-K
Rinnai
SKU: 104000241-K
Brand: Rinnai
(22)
$129.81 each
In Stock
Get 10 by Tue, Nov 17
In Stock
Get 10 by Tue, Nov 17
Compare
Product Image of Flame Rod, 100074220
Flame Rod, 100074220
SKU: 100074220
Takagi
SKU: 100074220
Brand: Takagi
(9)
$10.80 each
In Stock
Get 36 by Tue, Nov 17
In Stock
Get 36 by Tue, Nov 17
Compare
Product Image of Primary-Secondary Heating Kit for I-Series Boilers (Combi Models), 807000212
$397.82 each
In Stock
Get 24 by Tue, Nov 17
In Stock
Get 24 by Tue, Nov 17
Compare
Product Image of Ignitor Replacement, 100074640
Ignitor Replacement, 100074640
SKU: 100074640
Takagi
SKU: 100074640
Brand: Takagi
(2)
$42.20 each
In Stock
Get 17 by Tue, Nov 17
In Stock
Get 17 by Tue, Nov 17
Compare
Product Image of Remote Control Harness, 105000249
Remote Control Harness, 105000249
SKU: 105000249
Rinnai
SKU: 105000249
Brand: Rinnai
(9)
$14.55 each
In Stock
Get 63 by Tue, Nov 17
In Stock
Get 63 by Tue, Nov 17
Compare
Product Image of Flame Rod & Electrode Kit (KB), 104000249
Flame Rod & Electrode Kit (KB), 104000249
SKU: 104000249
Rinnai
SKU: 104000249
Brand: Rinnai
(6)
$38.83 each
In Stock
Get 17 by Tue, Nov 17
In Stock
Get 17 by Tue, Nov 17
Compare
Product Image of Bypass Assembly, RTG20235X
Bypass Assembly, RTG20235X
SKU: RTG20235X
Rheem
SKU: RTG20235X
Brand: Rheem
(21)
$93.59 each
In Stock
Get 4 by Tue, Nov 17
In Stock
Get 4 by Tue, Nov 17
Compare
Product Image of Anode D:14 L:131 M4, 7738007315
Anode D:14 L:131 M4, 7738007315
SKU: 7738007315
Bosch
SKU: 7738007315
Brand: Bosch
(25)
$13.85 each
In Stock
Get 38 by Tue, Nov 17
In Stock
Get 38 by Tue, Nov 17
Compare
Product Image of 35.66" x 3" x 5" Concentric Straight Vent, RTG20270D
$71.91 each
In Stock
Get 12 by Tue, Nov 17
In Stock
Get 12 by Tue, Nov 17
Compare
Product Image of O-Ring - High Temp P16, 3223302-B
O-Ring - High Temp P16, 3223302-B
SKU: 3223302-B
Noritz
SKU: 3223302-B
Brand: Noritz
(4)
$1.72 each
In Stock
Get 91 by Tue, Nov 17
In Stock
Get 91 by Tue, Nov 17
Compare
Product Image of Electrode Package RC98HPi/e, R75, R94, R80i/e, 109000126
$5.04 each
In Stock
Get 18 by Tue, Nov 17
In Stock
Get 18 by Tue, Nov 17
Compare
Product Image of Filter Plug, 100074381
Filter Plug, 100074381
SKU: 100074381
Takagi
SKU: 100074381
Brand: Takagi
(6)
$8.75 each
In Stock
Get 34 by Tue, Nov 17
In Stock
Get 34 by Tue, Nov 17
Compare
Product Image of Ignitor for N-0751M & N-0931M, EMUJ004
Ignitor for N-0751M & N-0931M, EMUJ004
SKU: EMUJ004
Noritz
SKU: EMUJ004
Brand: Noritz
(40)
$21.15 each
In Stock
Get 15 by Tue, Nov 17
In Stock
Get 15 by Tue, Nov 17
Compare
Product Image of Ignition Plug w/ Gasket, SKC7448
Ignition Plug w/ Gasket, SKC7448
SKU: SKC7448
Noritz
SKU: SKC7448
Brand: Noritz
(12)
$18.34 each
In Stock
Get 21 by Tue, Nov 17
In Stock
Get 21 by Tue, Nov 17
Compare
Product Image of Inlet Water Filter, RTG20164AK
Inlet Water Filter, RTG20164AK
SKU: RTG20164AK
Rheem
SKU: RTG20164AK
Brand: Rheem
(22)
$11.47 each
In Stock
Get 5 by Tue, Nov 17
In Stock
Get 5 by Tue, Nov 17
Compare
Product Image of All Clear Replacement Cartridge, RTG20252
All Clear Replacement Cartridge, RTG20252
SKU: RTG20252
Rheem
SKU: RTG20252
Brand: Rheem
(24)
$110.00 each
In Stock
Get 20 by Fri, Nov 20
In Stock
Get 20 by Fri, Nov 20
Compare
Product Image of Condensate Drain Port, 100074203
Condensate Drain Port, 100074203
SKU: 100074203
Takagi
SKU: 100074203
Brand: Takagi
(9)
$10.19 each
In Stock
Get 25 by Wed, Nov 18
In Stock
Get 25 by Wed, Nov 18
Compare
Product Image of Kit, Rod, Flame, W/afr Function, 100224098
Kit, Rod, Flame, W/afr Function, 100224098
SKU: 100224098
AO Smith
SKU: 100224098
Brand: AO Smith
(1)
$22.04 each
In Stock
Get 10 by Tue, Nov 17
In Stock
Get 10 by Tue, Nov 17
Compare
Product Image of Kit, Fan Assembly, R75, R94, R50 (VA) KT, 104000061-K
Kit, Fan Assembly, R75, R94, R50 (VA) KT, 104000061-K
SKU: 104000061-K
Rinnai
SKU: 104000061-K
Brand: Rinnai
(45)
$152.65 each
In Stock
Get 23 by Tue, Nov 17
In Stock
Get 23 by Tue, Nov 17
Compare
Product Image of RX Series Outdoor Vent Cap, RXOVC
RX Series Outdoor Vent Cap, RXOVC
SKU: RXOVC
Rinnai
SKU: RXOVC
Brand: Rinnai
$55.95 each
In Stock
Get 8 by Tue, Nov 17
In Stock
Get 8 by Tue, Nov 17
Resources
FAQs, Manuals & Videos
Videos