/
/
Parts town. Get real parts faster

Shopping Cart

Skip to NavigationSkip to Content
Loading...
Loading...
USD
Multi-SKU Order
LoginRegister
Parts town. Get real parts faster

Find Equipment Manuals

Loading...
Loading...
  1. Home
  2. /
  3. Lochinvar
  4. /
  5. APX400N-100

Part Category

  • Catches, Latches & Strikes(1)
  • Controls(4)
  • Conversion Kits(1)
  • Filters, Screens & Driers(1)
  • Fuses, Blocks & Holders(2)
  • Gaskets & Seals(10)
  • Gauges & Thermometers(1)
  • Maintenance Kits(1)
  • O-Rings(1)
  • Probes & Sensors(7)
  • Pumps & Motors(1)
  • Relays(1)
  • Switches & Buttons(3)
  • Valves, Solenoids & Fittings(5)
Cool,Calm and Collected- Real OEM HVAC Pars Are in Season! SHOP NOW

get special offers & news from parts town

+52 558.957.7295
Loading...
Loading...
visa
visa
mastercard
mastercard
american-express
american-express
discover
discover
paypal
paypal
© 2026 Parts Town. All rights reserved.
Loading...
visa
visa
mastercard
mastercard
american-express
american-express
discover
discover
paypal
paypal

Stock Up on Real OEM HVAC Parts for the Summer Season! SHOP NOW

Call: +52 558.957.7295
Hvac Parts
TECHTOWN
Track My Order
HVAC Parts Are Here!

HVAC Parts Are Here!

Shop the top brands in the industry.

Take Parts Town on the Go!

Take Parts Town on the Go!

Download the industry's #1 app today!

Find the parts you need to fix equipment!

Find the parts you need to fix equipment!

Based on data from techs, powered by AI!

We are ready to help!

We are ready to help!

We offer customer service support in Spanish

Flat rate shipping anywhere in Mexico $49.99

Flat rate shipping anywhere in Mexico $49.99

Inclusive of duties and brokerage.

Find the parts you need to fix equipment!

Find the parts you need to fix equipment!

Based on data from techs, powered by AI!

Help Desk

  • Contact Us
  • Shipping
  • Taxes And Fees
  • Returns
  • FAQ

Inside Parts Town

  • About Us
  • Careers
  • Our Difference
  • Resource Center
  • Parts Town Blog
  • techtown
  • International

Technology and Innovations

  • Parts Town App
  • Parts In Town
  • Serial Number Lookup
  • Smart Manuals
  • Website Features
  • Terms of Use
  • Privacy Policy
  • Privacy Request

Part Category

  • Catches, Latches & Strikes(1)
  • Controls(4)
  • Conversion Kits(1)
  • Filters, Screens & Driers(1)
  • Fuses, Blocks & Holders(2)
  • Gaskets & Seals(10)
  • Gauges & Thermometers(1)
  • Maintenance Kits(1)
  • O-Rings(1)
  • Probes & Sensors(7)
  • Pumps & Motors(1)
  • Relays(1)
  • Switches & Buttons(3)
  • Valves, Solenoids & Fittings(5)
Cool,Calm and Collected- Real OEM HVAC Pars Are in Season! SHOP NOW

Model: APX400N-100

Manuals Available: 2

Installation & Operation Manual

View Manual

Parts Manual

View Manual

Lochinvar APX400N-100 Parts & Manuals

Manufacturer:

Model #:

Lochinvar

APX400N-100

Aquas High Efficiency Commercial Pool Package System

Aquas High Efficiency Commercial Pool Package System

Lochinvar 100368946 Ignitor Electrode Kit with Gasket & Screws

Lochinvar
  • Mfr Part # 100368946
  • Parts Town # LOC100368946
  • Quantity12

In Stock, Ships today

Lochinvar 100208442 Pressure Relief/Safety Valve, 50#, 3/4"

Lochinvar
  • Mfr Part # 100208442
  • Parts Town # LOC100208442
  • Quantity6

In Stock, Ships today

Lochinvar 100335986 Flow Switch with # 2 Paddle

Lochinvar
  • Mfr Part # 100335986
  • Parts Town # LOC100335986
  • Quantity5

In Stock, Ships today

Lochinvar 100345164 Preventative Maintenance Kit

Lochinvar
  • Mfr Part # 100345164
  • Parts Town # LOC100345164
  • Quantity5

In Stock, Ships today

Lochinvar 100208105 Gasket, Venturi

Lochinvar
  • Mfr Part # 100208105
  • Parts Town # LOC100208105
  • Quantity5

In Stock, Ships today

Lochinvar 100284709 Condensate Trap Assembly

Lochinvar
  • Mfr Part # 100284709
  • Parts Town # LOC100284709
  • Quantity6

In Stock, Ships today

Lochinvar 100208381 Pressure Switch, 3.0" WC

Lochinvar
  • Mfr Part # 100208381
  • Parts Town # LOC100208381
  • Quantity3

In Stock, Ships today

Lochinvar 100208509 Relay, 120VAC Coil, 60HZ

Lochinvar
  • Mfr Part # 100208509
  • Parts Town # LOC100208509
  • Quantity4

In Stock, Ships today

Lochinvar 100208622 Wire Harness, Electrode/Flame Sensor

Lochinvar
  • Mfr Part # 100208622
  • Parts Town # LOC100208622
  • Quantity6

In Stock, Ships today

Lochinvar 100233577 K,AIR FILTER,HEAVY DUTY,1" X 12" X 12"

Lochinvar
  • Mfr Part # 100233577
  • Parts Town # LOC100233577
  • Quantity8

In Stock, Ships today

Lochinvar 100233698 O-Ring, Fan/Venturi

Lochinvar
  • Mfr Part # 100233698
  • Parts Town # LOC100233698
  • Quantity7

In Stock, Ships today

Lochinvar 100172015 K,GAS VALVE,NAT,KB/AW 800

Lochinvar
  • Mfr Part # 100172015
  • Parts Town # LOC100172015
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Lochinvar 100208152 K,GAUGE,T&P,0-75PSI,50-320F 2-1/2X3/8

Lochinvar
  • Mfr Part # 100208152
  • Parts Town # LOC100208152
  • Quantity0

Out of Stock, backorders usually ship in 10-12 days.

Lochinvar 100208242 K,SWITCH,ON/OFF,W/I-O SYMBOL

Lochinvar
  • Mfr Part # 100208242
  • Parts Town # LOC100208242
  • Quantity0

Out of Stock, backorders usually ship in 10-12 days.

Lochinvar 100208454 Pressure Relief/Safety Valve, 50PSI, 3/4"

Lochinvar
  • Mfr Part # 100208454
  • Parts Town # LOC100208454
  • Quantity0

Out of Stock, backorders usually ship in 8-10 days.

Lochinvar 100208459 K,CONNECTION BOARD

Lochinvar
  • Mfr Part # 100208459
  • Parts Town # LOC100208459
  • Quantity0

Out of Stock, backorders usually ship in 8-10 days.

Lochinvar 100208558 K,TSTAT,SENSOR,PREMIX,LIMIT

Lochinvar
  • Mfr Part # 100208558
  • Parts Town # LOC100208558
  • Quantity0

Out of Stock, backorders usually ship in 10-12 days.

Lochinvar 100208563 K,TSTAT,SENSOR,IMMERSION, 1/4NPT

Lochinvar
  • Mfr Part # 100208563
  • Parts Town # LOC100208563
  • Quantity0

Out of Stock, backorders usually ship in 10-12 days.

Lochinvar 100208761 K,GASKET,VENTURI

Lochinvar
  • Mfr Part # 100208761
  • Parts Town # LOC100208761
  • Quantity0

Out of Stock, backorders usually ship in 10-12 days.

Lochinvar 100208808 K,FUSE,TIME DELAY,0.8A,250V,CLASS T

Lochinvar
  • Mfr Part # 100208808
  • Parts Town # LOC100208808
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Lochinvar 100208834 K,TSAT,SENSOR,OUTDOOR AIR

Lochinvar
  • Mfr Part # 100208834
  • Parts Town # LOC100208834
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Lochinvar 100233705 K,GASKET,FAN/VENTURI

Lochinvar
  • Mfr Part # 100233705
  • Parts Town # LOC100233705
  • Quantity0

Out of Stock, backorders usually ship in 15-17 days.

Lochinvar 100288880 K,O-RING,SMALL,.079X1.299 ID

Lochinvar
  • Mfr Part # 100288880
  • Parts Town # LOC100288880
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Lochinvar 100288899 K,GASKET,DONUT,1",FASIT 202

Lochinvar
  • Mfr Part # 100288899
  • Parts Town # LOC100288899
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

12