Skip to main content

DEALS LIVE NOW - SAVE UP TO 40%! VIEW DETAILS

     Spa World Logo
Spa Pools & More Parts & Accessories
0 0
SEARCH
  • Chemicals Chemicals
    Browse all Chemicals
    • Chemical Type
      • All Chemicals
      • Sanitiser
      • Shock
      • Testing & Balancing
      • Anti Foam & Clarifiers
      • Cleaning
      • Aromatherapy
      • Pipe Cleaners & Conditioners
      • Chemical Startup kits
      • Water Softeners & Minerals
    • Chemical System
      • For All Systems
      • Chlorine Free System
      • Chlorine System
    • Chemical Brand
      • All Brands
      • Spa Store™
      • SpaCare™
      • Poppits®
      • Zodiac®
      • BioGuard®
      • 303®
    • Chemical FAQ
      • Chemical quickstart guide
      • What is the best spa sanitiser?
      • How do I use test strips?
      • Saltwater vs chlorine sanitising
      • Why is my spa foaming?
      • Why is my spa water cloudy?
  • Filters Filters
    Browse all Filters
    • Filter Type
      • Spa Filters
      • Pool Filters
      • Filter Parts
    • Length
      • 100-199mm
      • 200-250mm
      • 250-399mm
      • 400mm+
    • Brand
      • All Brands
      • Vortex Spas™
      • Fisher Spas™
      • Jacuzzi®
      • Sundance®
      • Hotspring®
      • Arcadia®
      • Davey® / Spa Quip®
      • Waterway®
      • Waterco®
      • O2®
      • CMP®
    • Bottom type
      • Threaded
      • Non-Threaded
  • Covers Covers
    Browse all Covers
    • Spa Cover Type
      • All Covers
      • Portable Spa Covers
      • Swim Spa Covers
    • Spa Brand
      • All Brands
      • Vortex® Spa Covers
      • Fisher® Spa Covers
      • Jacuzzi® Spa Covers
    • Spa Cover Size
      • All Sizes
      • 1m - 1.49m
      • 1.5m - 1.99m
      • 2m - 2.29m
      • 2.3m - 2.99m
      • 3m - 3.99m
      • 4m +
      • Custom Size
    • Cover Accessories
      • Cover Lifters
      • Clips, Locks & Straps
      • Cover Maintenance / Cleaning
      • ClearLift™ Parts
      • Protective Coveralls
  • Accessories Accessories
    Browse all Accessories
    • Accessory Type
      • All Accessories
      • Spa Cover Lifters
      • Spa Steps
      • Vacuum Cleaners
      • Entertainment
      • Spa Cleaning
      • Booster Seats & Pillows
      • Filter Cleaners
      • Aqua Fitness
      • Spa Headrests
    • Outdoor Heating
      • All outdoor heating
      • Electric Heaters
    • Lifestyle
      • Saunas
      • Louvre Pergolas
      • Umbrellas
      • Outdoor Showers
      • Ice Baths
  • Spa Parts Spa Parts
    • Spa Headrests
    • Spa Pumps
    • Spa Heaters
    • Heat Pumps
    • Spa Blowers (Air Pumps)
    • Spa Jets
    • Spa Controllers & Electronics
    • Ozone & UV
    • Spa Lighting
    • Cabinet Parts
    • Spa AV, Stereo & WIFI
    • Spa Plumbing
  • On Sale On Sale
  • My Account My Account
  • Contact Contact
    Browse all Contact
    • Contact Us
    • Articles
    • Videos
    • Knowledge Base
    • Manuals & User Guides
    • Cover FAQ
  • Resources Resources
    • Articles
    • Videos
    • Knowledge Base
    • Manual & User Guides
    • Cover FAQ
  • Chemicals
    • Chemical Type
      • All Chemicals
      • Sanitiser
      • Shock
      • Testing & Balancing
      • Anti Foam & Clarifiers
      • Cleaning
      • Aromatherapy
      • Pipe Cleaners & Conditioners
      • Chemical Startup kits
      • Water Softeners & Minerals
    • Chemical System
      • For All Systems
      • Chlorine Free System
      • Chlorine System
    • Chemical Brand
      • All Brands
      • Spa Store™
      • SpaCare™
      • Poppits®
      • Zodiac®
      • BioGuard®
      • 303®
    • Chemical FAQ
      • Chemical quickstart guide
      • What is the best spa sanitiser?
      • How do I use test strips?
      • Saltwater vs chlorine sanitising
      • Why is my spa foaming?
      • Why is my spa water cloudy?
  • Filters
    • Filter Type
      • Spa Filters
      • Pool Filters
      • Filter Parts
    • Length
      • 100-199mm
      • 200-250mm
      • 250-399mm
      • 400mm+
    • Brand
      • All Brands
      • Vortex Spas™
      • Fisher Spas™
      • Jacuzzi®
      • Sundance®
      • Hotspring®
      • Arcadia®
      • Davey® / Spa Quip®
      • Waterway®
      • Waterco®
      • O2®
      • CMP®
    • Bottom type
      • Threaded
      • Non-Threaded
  • Covers
    • Spa Cover Type
      • All Covers
      • Portable Spa Covers
      • Swim Spa Covers
    • Spa Brand
      • All Brands
      • Vortex® Spa Covers
      • Fisher® Spa Covers
      • Jacuzzi® Spa Covers
    • Spa Cover Size
      • All Sizes
      • 1m - 1.49m
      • 1.5m - 1.99m
      • 2m - 2.29m
      • 2.3m - 2.99m
      • 3m - 3.99m
      • 4m +
      • Custom Size
    • Cover Accessories
      • Cover Lifters
      • Clips, Locks & Straps
      • Cover Maintenance / Cleaning
      • ClearLift™ Parts
      • Protective Coveralls
  • Accessories
    • Accessory Type
      • All Accessories
      • Spa Cover Lifters
      • Spa Steps
      • Vacuum Cleaners
      • Entertainment
      • Spa Cleaning
      • Booster Seats & Pillows
      • Filter Cleaners
      • Aqua Fitness
      • Spa Headrests
    • Outdoor Heating
      • All outdoor heating
      • Electric Heaters
    • Lifestyle
      • Saunas
      • Louvre Pergolas
      • Umbrellas
      • Outdoor Showers
      • Ice Baths
  • Spa Parts
    • Spa Headrests
    • Spa Pumps
    • Spa Heaters
    • Heat Pumps
    • Spa Blowers (Air Pumps)
    • Spa Jets
    • Spa Controllers & Electronics
    • Ozone & UV
    • Spa Lighting
    • Cabinet Parts
    • Spa AV, Stereo & WIFI
    • Spa Plumbing
  • On Sale
  • My Account
  • Contact
    • Contact Us
    • Articles
    • Videos
    • Knowledge Base
    • Manuals & User Guides
    • Cover FAQ
  • Resources
    • Articles
    • Videos
    • Knowledge Base
    • Manual & User Guides
    • Cover FAQ
Contact Us
1300 706 716 shop@spaworld.com.au
Can't find what you are looking for? Use our Al assistant to get more information on our products and services.
Open AI Assistant

All items available online only

CONTACT US
  1. Parts & Accessories
  2. Spa Plumbing
  3. 50mm(2") Spa Heater Union Kit
50mm(2") Spa Heater Union Kit

50mm(2") Spa Heater Union Kit

Compatible with Gecko, Balboa, Hydroquip, and more systems

Why Pay $69.80
Now $67.54
YOU SAVE $2.26
Buy Now, Pay Later With zipPay

4 x $16.89 Fortnightly Payments with Afterpay Logo

[%/format%]
Notify Me
Questions? Ask our AI Assistant.
Afterpay Logo
4 x $16.89 Fortnightly Payments
Pay in 4 interest-free payments of $16.89

Notify me when back in stock

Please tick this box to proceed.

Calculate Shipping

Create a Bundle

50mm(2") Spa Heater Union Kit
This Product
✓

50mm(2") Spa Heater Union Kit

$68
3-Tier Swim Spa Steps - Black Aluminium Spa Steps /Stairs
✓
+

3-Tier Swim Spa Steps - Black Aluminium Spa Steps /Stairs

$799
Rechargeable Powered Spa / Pool Scrubbing Brush
✓
+

Rechargeable Powered Spa / Pool Scrubbing Brush

$299
📦
2 items
Bundle Price
$867
technical help
Need technical help?
Click here to book a technician

50mm(2") Spa Heater Union Kit

  • Kit comes with heater tailpiece, split tube nut, and Union o-ring 
  • Suits Gecko, Balboa, Hydroquip, and many others

Kit includes:

1)  2 X [HQ-42-0006A] 50mm(2") Heater Union Threaded Tail with Socket

2)  2 X [HQ-42-0007-K]  50mm(2") Split Heater Tube Nut: A two-piece: held together with two screws, and comes with a collar to prevent sliding off the heater tube

3)  2 X [B-216190]  50mm(2") Heater Union O-Ring: One side with a slightly rounded edge and the other side has a thicker square edge. approximately 74mm in diameter, 6mm in total thickness (including the rounded and rectangular edges), and 2.5mm not including the raised edges.

Details:

Model: HUNIONKIT

Manufacturer: Gecko® / Balboa®

To be fitted by a qualified electrician, pool, or spa technician only. Spa World will not be liable for incorrect installation, damage, or injury caused by an unqualified person installing this part.

Still not sure this is the correct heater? Contact our heater experts

Important Electrical Notice:

Can't find what you are looking for? Use our Al assistant to get more information on our products and services.
Open AI Assistant
SKU HUNIONKIT
Model # HUNIONKIT
Brand Balboa®
Shipping Weight 0.5000kg
Shipping Width 0.200m
Shipping Height 0.200m
Shipping Length 0.600m
Shipping Cubic 0.024000000m3
  • Description
technical help
Need technical help?
Click here to book a technician

50mm(2") Spa Heater Union Kit

  • Kit comes with heater tailpiece, split tube nut, and Union o-ring 
  • Suits Gecko, Balboa, Hydroquip, and many others

Kit includes:

1)  2 X [HQ-42-0006A] 50mm(2") Heater Union Threaded Tail with Socket

2)  2 X [HQ-42-0007-K]  50mm(2") Split Heater Tube Nut: A two-piece: held together with two screws, and comes with a collar to prevent sliding off the heater tube

3)  2 X [B-216190]  50mm(2") Heater Union O-Ring: One side with a slightly rounded edge and the other side has a thicker square edge. approximately 74mm in diameter, 6mm in total thickness (including the rounded and rectangular edges), and 2.5mm not including the raised edges.

Details:

Model: HUNIONKIT

Manufacturer: Gecko® / Balboa®

To be fitted by a qualified electrician, pool, or spa technician only. Spa World will not be liable for incorrect installation, damage, or injury caused by an unqualified person installing this part.

Still not sure this is the correct heater? Contact our heater experts

Important Electrical Notice:

Can't find what you are looking for? Use our Al assistant to get more information on our products and services.
Open AI Assistant

Specifications

SKU HUNIONKIT
Model # HUNIONKIT
Brand Balboa®
Shipping Weight 0.5000kg
Shipping Width 0.200m
Shipping Height 0.200m
Shipping Length 0.600m
Shipping Cubic 0.024000000m3

technical help
Need technical help?
Click here to book a technician

50mm(2") Spa Heater Union Kit

  • Kit comes with heater tailpiece, split tube nut, and Union o-ring 
  • Suits Gecko, Balboa, Hydroquip, and many others

Kit includes:

1)  2 X [HQ-42-0006A] 50mm(2") Heater Union Threaded Tail with Socket

2)  2 X [HQ-42-0007-K]  50mm(2") Split Heater Tube Nut: A two-piece: held together with two screws, and comes with a collar to prevent sliding off the heater tube

3)  2 X [B-216190]  50mm(2") Heater Union O-Ring: One side with a slightly rounded edge and the other side has a thicker square edge. approximately 74mm in diameter, 6mm in total thickness (including the rounded and rectangular edges), and 2.5mm not including the raised edges.

Details:

Model: HUNIONKIT

Manufacturer: Gecko® / Balboa®

To be fitted by a qualified electrician, pool, or spa technician only. Spa World will not be liable for incorrect installation, damage, or injury caused by an unqualified person installing this part.

Still not sure this is the correct heater? Contact our heater experts

Important Electrical Notice:

Can't find what you are looking for? Use our Al assistant to get more information on our products and services.
Open AI Assistant

SKU HUNIONKIT
Model # HUNIONKIT
Brand Balboa®
Shipping Weight 0.5000kg
Shipping Width 0.200m
Shipping Height 0.200m
Shipping Length 0.600m
Shipping Cubic 0.024000000m3
technical help
Need technical help? Click here to book a technician

We Also Recommend

3-Tier Swim Spa Steps - Black Aluminium Spa Steps /Stairs

3-Tier Swim Spa Steps - Black Aluminium Spa Steps

Why Pay $949.00
Now $799.00 Save $150.00

Interest free with. zip-pay afterpay

free shipping

*OUT OF STOCK

Rechargeable Powered Spa / Pool Scrubbing Brush

Rechargeable Powered Spa / Pool Scrubbing Brush

More Information

Interest free with. zip-pay afterpay

Most Popular

Micro Fibre Cleaning Mitt

Micro Fibre Cleaning Mitt

Why Pay $15.95
Now $14.25 Save $1.70

Interest free with. zip-pay afterpay

Outdoor LED Lantern with multi colours

Outdoor LED Lantern with multi colours

Now $65.95

Interest free with. zip-pay afterpay

free shipping

Telsa® 30 Rechargeable Spa Vacuum Cleaner

Telsa® 30 Rechargeable Spa Vacuum Cleaner

Why Pay $329.95
Now $299.95 Save $30.00

Interest free with. zip-pay afterpay

Often purchased with this item

40mm Barrel Union Threaded Nut Socket

40mm Barrel Union Threaded Nut Socket

Now $9.48

Interest free with. zip-pay afterpay

50mm Sweep Elbow (Socket to Spigot)

50mm Sweep Elbow (Socket to Spigot)

Now $10.45

Interest free with. zip-pay afterpay

Balboa® 2"(50mm) Heater Union Tail

Balboa® 2"(50mm) Heater Union Tail

Why Pay $26.92
Now $19.58 Save $7.34

Interest free with. zip-pay afterpay

More From This Category

Vortex Spas® Waterfall Valve Handle Piece

Vortex Spas® Waterfall Valve Handle Piece

Why Pay $10.80
Now $6.22 Save $4.58

Interest free with. zip-pay afterpay

Fitting: Return Clear WTRFALL

Fitting: Return Clear WTRFALL

Why Pay $9.54
Now $7.95 Save $1.59

Interest free with. zip-pay afterpay

Jacuzzi® Retrofit Diverter Gate T-Valve

Jacuzzi® Retrofit Diverter Gate T-Valve

Why Pay $90.57
Now $75.47 Save $15.10

Interest free with. zip-pay afterpay

Five Star Trust Pilot Rating

We are proud that Spa World customers have given us a Five Star Trustpilot rating.

Trustpilot
Hassle Free Returns

Hassle Free Returns

For peace of mind

EARN REWARD POINTS

EARN REWARD POINTS

With a Spa World Account

FAST, FREE SHIPPING

FAST, FREE SHIPPING

on AU orders over $199*

WE'VE GOT YOUR BACK

WE'VE GOT YOUR BACK

With 7-day online chat support

Spa World

Stay Connected

  • Facebook
  • Twitter
  • Instagram
  • Pinterest
  • Linkedin

About Us

  • Terms of Use
  • Privacy Policy
  • Returns Policy
  • Shipping Policy

Shopping Assistance

  • My Account
  • Track Order
  • Resolution Center

Contact Us

  • 1300 556 558
  • shop@spaworld.com.au

Office Hours AEST:

  • Mon - Fri: 9:00 am to 5:00 pm
  • Sat: 10:00 am to 4:00 pm
  • Sun: 10:00 am to 4:00 pm
  • Closed Public Holidays
    including Easter

Stay Connected

  • Facebook
  • Twitter
  • Instagram
  • Pinterest
  • Linkedin

Spa World

Free shipping on orders $199.00+ *Excludes spa covers, heat pumps, umbrellas, saunas, pergolas, fire tables, dangerous goods, trade orders and is only valid in Australia.

Copyright © 2026 Spa World Australia Pty Ltd.

ABN: 94 141 609 663

Your Cart

$67.54