Hot Water Expansion Drain Line Installation (Installation Add-On) - Installed Today

Hot Water Expansion Drain Line Kit

Name: Hot Water Expansion Drain Line Kit
Brand: Installed Today
Price: 200.0 AUD
Availability: InStock

The L hot water system is ideal for homes with people and typical daily usage. Built tough with a tank and backed by a maximum -year warranty, it's a reliable, efficient choice for everyday hot water.

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Answer a few quick questions to confirm whether you can order this package online or need a quick install check first.

Are you replacing an existing hot water system?

Are you replacing the same hot water system type?

For example: electric storage to electric storage, heat pump to heat pump, gas instant to gas instant, or gas storage to gas storage.

Are you replacing the same hot water system, identical make and model?

Example Rheem 250L Model 491250 replacing Rheem 250L Model 491250

Will the new hot water system be installed in the same location as the existing system?

Where is the system located?

Are you changing system type, electrical connection type or needing to extend your electrical connection?

Eg. Are you changing from a hardwired installation to a plugged? Does your existing hardwired connection need extending to install the new unit correctly? Are you changing from an electric storage system to a heatpump?

Do any site access issues apply?

If any access issue applies, we will add the 2-man install option and continue.

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See what a compliant installation usually needs

Compliance items will change depending on the product type you are viewing.

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Main product Hot Water Expansion Drain Line Kit

$200.00

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$200.00

HOT WATER INSTALLATION ADD-ON

Hot Water Drain Line to Approved Discharge Point

A hot water drain line is an important installation add-on for storage hot water systems where an expansion control valve, temperature and pressure relief valve or safe tray drain needs to discharge water to a suitable approved location.

Storage hot water systems can release small amounts of water during normal operation as heated water expands or relief valves operate. This discharge should be directed away from the hot water system and surrounding building area rather than being left to run uncontrolled onto the ground, slab edge, garden bed or other unsuitable location.

This add-on covers running a drain line from the hot water system area to a suitable approved discharge point as part of an eligible supplied-and-installed hot water system installation.

Hot water drain line at a glance: this installation add-on provides pipework from the hot water system's applicable relief, expansion or safe tray drainage point to a suitable discharge location. The final discharge point depends on the property, existing drainage, access and installation requirements and is confirmed by the installer on site.

WHY IT MATTERS

Why Might a Hot Water Drain Line Be Needed?

Storage hot water systems naturally experience water expansion as the stored water heats. Depending on the system and valve arrangement, discharge water may come from an expansion control valve, temperature and pressure relief valve or safe tray drain.

If that water is not directed correctly, it can create ongoing moisture around the installation area.

Water Pooling

Discharge water can collect around the base of the hot water system or surrounding slab if there is no suitable drainage path.

Moisture Around the Building

Water may run against walls, slab edges, pathways or foundations rather than being directed away from the installation.

Uncontrolled Runoff

Relief or expansion water may otherwise run through outdoor areas, garden beds or other locations where ongoing discharge is undesirable.

DISCHARGE OPTIONS

Where Can the Drain Line Discharge?

The drain line needs to be directed to a suitable discharge point. The appropriate option depends on the property layout, existing drainage, access, ground conditions and the hot water system location.

Sewer Drainage

An available and suitable sewer drainage point may be used where the installation and site conditions allow.

Stormwater Drainage

An existing suitable stormwater drainage point may be an option depending on the site and installation requirements.

Compliant Rubble Pit

A suitable rubble pit may be used where appropriate for the property and installation.

Existing Drain Point

An existing approved tundish or drainage point may be suitable where one is already available near the system.

Other Suitable Location

Another discharge location may be used where the installer confirms it is appropriate for the site and installation.

Installer Assessment

The installer assesses the available options and confirms the most suitable practical discharge point for the property.

TERMITE MANAGEMENT

Important Termite Barrier Considerations

Hot water discharge should not simply be left to run continuously into soil, garden beds or directly around the building perimeter where this may interfere with a termite management area.

Where a termite barrier, treated zone or other termite management system may be present, the drain line should be positioned so discharge water is directed away from that area to a suitable discharge location.

The installer can assess the immediate hot water installation area and determine a practical drainage route based on the site conditions.

WHAT'S INCLUDED

What Does This Drain Line Add-On Include?

Drain line from the hot water system area to a suitable nearby discharge point
Connection to the relevant hot water valve or drainage point where required
Basic pipework required for the drain line run
Basic fittings required for the drain line
Assessment of the most suitable nearby discharge point
Neat routing where practical based on access and site layout

WHAT'S NOT INCLUDED

What Is Outside a Standard Drain Line Installation?

This add-on is intended for a standard accessible drain line run. More extensive drainage, building or ground works are not automatically included.

Excavation & Trenching

Major excavation, substantial trenching and extensive underground pipe runs are not included unless separately quoted and approved.

Concrete & Building Work

Concrete cutting, core drilling, major penetrations and reinstatement work are not included as part of the standard add-on.

New Drainage Infrastructure

Construction of new sewer or stormwater systems, pump systems or major alterations to existing drainage are outside the standard scope.

Repairs & Remediation

Repairs to existing drainage, damaged pipework or other pre-existing plumbing problems are not automatically included.

Landscaping

Landscaping, garden restoration and other reinstatement work are outside the standard drain line add-on.

Termite Treatment

Termite treatment, barrier modification or specialist termite-management work is not included.

If additional work is required beyond a standard drain line run, it can be assessed during installation and quoted separately where available.

PRODUCT SUITABILITY

When Is This Hot Water Drain Line Add-On Suitable?

No Existing Drain Line

Suitable where the new hot water system requires relief, expansion or safe tray drainage and there is no usable existing drain line.

Existing Drain Is Unsuitable

May be required where the existing drain line is damaged, poorly positioned or unsuitable for the new hot water installation.

Water Discharges to Ground

Useful where water would otherwise discharge onto soil, a garden bed, slab edge or another undesirable location.

New Installation Location

A relocated or newly positioned hot water system may require a new drainage route to reach an appropriate discharge point.

Safe Tray Drainage

The add-on may be suitable where a safe tray requires a drain connection to an appropriate discharge location.

Installer Identifies the Need

The installer may determine during the installation that a new or improved drain line is required for the site.

INSTALLATION PROCESS

How Is the Drain Line Installed?

1. Site Is Assessed

The installer checks the hot water system location, applicable valves, existing drainage and available discharge points.

2. Route Is Selected

A practical drain line route is selected based on access, distance, site layout and the available discharge location.

3. Drain Line Is Run

The required pipework is installed and connected to the relevant hot water discharge point where required.

INSTALLATION ONLY

Can I Buy This Drain Line as a Standalone Product?

No. This is an installation add-on service rather than a standalone supply-only product.

It must be purchased in conjunction with an eligible supplied-and-installed hot water system installation where drain line work is required.

This is not a supply-only plumbing product. The add-on covers the installation of a drain line as part of an eligible hot water installation.

COMMON QUESTIONS

Questions About Hot Water Drain Lines

Why Does a Hot Water System Release Water?

Storage hot water systems can release small amounts of water through relief or expansion valves as stored water heats and expands. This can form part of normal system operation.

Where Does Hot Water Relief Water Go?

Where a drain line is required, the discharge is directed through pipework to a suitable discharge location determined by the installation and site conditions.

Can the Water Just Drain Onto the Ground?

The purpose of this add-on is to avoid uncontrolled discharge around the hot water system where a suitable drainage point is required. The installer assesses the site and determines an appropriate drainage arrangement.

Can a Drain Line Go to Sewer?

Sewer drainage may be suitable on some properties where an appropriate connection point is available and the installation allows it.

Can It Go to Stormwater?

A suitable stormwater drainage point may be an option depending on the property, existing drainage and installation requirements.

What Is a Rubble Pit?

A rubble pit is a drainage area intended to allow suitable discharge water to disperse into the surrounding ground. Whether one is appropriate depends on the site and installation.

Why Is Termite Management Mentioned?

Repeated water discharge around a building perimeter or treated soil area may be undesirable where termite management systems are present. The drain line can help direct discharge away from these areas.

Does This Include Excavation?

Major excavation or trenching is not included in the standard add-on. If extensive ground work is required, it may need to be assessed and quoted separately.

Does It Include Concrete Cutting?

No. Concrete cutting, core drilling and other substantial building works are outside the standard drain line scope unless specifically quoted and approved.

Can You Repair My Existing Stormwater or Sewer Drain?

Repairs or alterations to existing drainage systems are not included in this standard add-on. Additional work can be assessed separately where available.

Is the Drain Line Always Required?

No. Whether a new drain line is required depends on the hot water system, existing drainage, current pipework, installation location and site conditions.

Who Decides Where the Drain Line Goes?

The installer assesses the available discharge points and determines the most suitable practical option based on the installation and property layout.

FINAL SITE CHECK

Final Drain Line Suitability Is Confirmed on Site

Every property is different. The final drainage arrangement depends on the hot water system location, available discharge points, existing plumbing, site access and property layout.

The installer will assess these conditions during the hot water installation and confirm the most suitable practical drain line option for the property.

FINAL CHECK

Do You Need a Hot Water Drain Line?

This add-on is primarily suited to hot water installations where relief, expansion or safe tray discharge needs to be directed away from the unit to a suitable location.

It is particularly useful where an existing drain is missing or unsuitable, where discharge currently runs onto the ground or around the slab, or where the new hot water system is being installed in a position that requires a new drainage route.

Tempering Valve and Element Information

*Element size information:
All electric hot water units are supplied as standard with a 3.6kW element unless otherwise stated on the product page, invoice, or order confirmation.

If a different element configuration is requested, such as 1.8kW or 2.4kW, the hot water unit may still arrive with the standard 3.6kW element fitted from the manufacturer. The requested 1.8kW or 2.4kW element will be supplied separately with the order for installation by a suitably licensed electrical contractor or licensed electrical licence holder.

Any element changeover, electrical connection, disconnection, wiring, testing, or modification must be carried out by a licensed electrical contractor or licensed electrical licence holder. Elements must not be changed, connected, modified, or tested by an unlicensed person.

Alternative elements supplied for non-standard configurations may be generic replacement elements and may not be the same brand as the hot water unit unless specifically stated. Generic elements are supplied to suit the requested element size and electrical configuration, but final suitability must be checked by the licensed installer before installation.

1.8kW and 2.4kW elements supplied separately with a hot water unit include a 12-month supply-only parts warranty from the date of purchase, provided the element has been correctly installed by a licensed electrical contractor or licensed electrical licence holder and used under normal operating conditions.

This element warranty covers the replacement supply of the element only. It does not include labour, call-out fees, electrical work, plumbing work, fault finding, removal, reinstallation, testing, travel, downtime, damage caused by incorrect installation, or any other associated costs. Warranty may be declined where the element has been incorrectly installed, dry-fired, modified, damaged, connected to incorrect voltage or wiring, affected by power issues, used in unsuitable water conditions, or installed by an unlicensed person.

Proof of purchase, installer details, electrical licence details, photos, and/or return of the faulty element may be required before a warranty claim is approved.

**Tempering valve information:
Where a hot water system is capable of delivering water above 50°C, a compliant tempering valve must be installed to control the temperature delivered to personal hygiene fixtures such as showers, baths, basins, and bathroom outlets. This helps reduce the risk of scalding and assists with meeting plumbing compliance requirements.

A tempering valve blends hot and cold water to deliver a safer controlled outlet temperature to required fixtures. The hot water unit itself may store water at a higher temperature, but the water delivered to personal hygiene outlets must be controlled where required by plumbing regulations.

If your property already has a suitable, compliant tempering valve installed, your licensed plumber can assess whether it is appropriate for use with the new hot water system. Existing valves may not always be suitable due to age, condition, compliance requirements, valve type, location, or system compatibility.

If a compliant tempering valve is not already installed, or if the existing valve is unsuitable, one must be supplied and installed by a licensed plumber as part of the hot water installation.

Tempering valves are not automatically included with every supply-only hot water unit unless specifically selected, listed as included, or purchased as part of a suitable valve kit. If a tempering valve is required, please purchase the appropriate valve kit with your order or arrange for your licensed installer to supply and install the correct tempering valve on site.

It is the customer’s responsibility to ensure the installation is completed by appropriately licensed trades and that all required valves, fittings, electrical work, plumbing work, and compliance requirements are allowed for as part of the installation.

Optional Installation, Organised for You

Want the product supplied and the installation organised in one simple order? On eligible products and in selected service areas, Installed Today can arrange installation through a licensed installation partner at clear, upfront install rates.

You pay Installed Today for the selected product and install package, and we pay the assigned contractor on your behalf. That means one checkout, one package summary, and a smoother process from order to installation.

Why Choose an Installed Today Install Package?

Clear upfront install pricing
Our install package builder shows the available install option and selected add-ons before checkout, so you can review the package total before placing your order.

We organise the installation
Once your order is placed, we help coordinate the installation with a licensed installation partner in your area.

No need to pay the contractor separately for the selected package
You pay Installed Today for the product and selected install package. We then pay the assigned contractor on your behalf for the included installation service.

Built for common replacement jobs
The process is designed for suitable like-for-like replacement installs where the existing setup, access and compliance requirements match the selected package.

Add-ons shown before checkout where possible
If your answers indicate that a valve kit, access add-on or other selected extra may be required, these are shown in the package before you add it to cart.

How It Works

Step 1: Choose your product
Select the hot water system you want to order, including the right size, model and kW rating where applicable.

Step 2: Build your optional install package
Answer a few quick questions about your existing system, location, access and setup.

Step 3: Review your package total
Your selected product, installation option and any selected add-ons are shown before checkout.

Step 4: Pay once through Installed Today
Complete your order online. Your payment covers the product and the selected install package shown in your cart.

Step 5: We coordinate the install
Where the job is suitable and installation is available, we assign a licensed installation partner and help organise the next steps.

Important Installation Notes

Installed Today supplies the product and helps arrange installation through licensed installation partners where available. Installation is only available on selected products and in eligible service areas.

The install package price applies to the selected installation scope shown at checkout. Final suitability still depends on site access, existing plumbing or electrical setup, valves, drainage, compliance requirements, product suitability and any extra work required.

If something outside the selected package is needed, it will be discussed before proceeding.

Supply-only orders do not include installation, old unit removal, disposal, valve kits, electrical work, plumbing alterations or compliance upgrades unless these are clearly selected or included in your order.

A Simpler Way to Buy Hot Water, Filters, Pumps and Plumbing Products

Buying a new hot water system, water filter, pump or plumbing product should be clear, simple and easy to organise.

Installed Today helps you compare products, check supply-only pricing and, where available, build an optional installation package before checkout. That means you can choose the product, review the available options and order with more confidence, without the usual back and forth just to understand the starting price.

Whether you already know exactly what you need or you are still comparing options, Installed Today gives you a clearer way to buy the right product for your home, budget and timing.

Why Customers Choose Installed Today

Supply Only or Optional Installation

Choose the product on its own, or add installation where available on selected products and in eligible service areas. This gives you the flexibility to order the way that suits you best.

Clear Pricing Before Checkout

See the product price upfront, then review available installation options and common add-ons before placing your order. You can check the package total before checkout, instead of waiting on basic pricing just to get started.

Product Details That Actually Help

Key specs, sizing details, warranty information, product features and suitability notes are shown clearly, making it easier to compare products properly before you buy.

Common Installation Add-Ons Available

Where relevant, you can add common installation extras such as valve kits, bases, access-related items, removal, electrical options or other site-specific upgrades before checkout.

Built Around Brisbane and Gold Coast Homes

Our product and installation options are selected with common Brisbane and Gold Coast homes in mind, including local water quality, access issues, plumbing layouts, replacement requirements and typical installation conditions.

One Simple Order

Add the product and selected options to cart in one order, instead of trying to organise separate suppliers, installers, parts and payments yourself.

Practical Help Before You Buy

Not sure which size, model or installation option is right? Installed Today gives you a clearer path to compare your options before you order.

Designed to Make Your Decision Easier

Installed Today is built for customers who want a faster, clearer and more convenient way to buy.

Instead of guessing what is included, waiting for basic pricing or trying to work out which extras may be needed, you can review the product, compare your options and move forward with confidence.

Choose supply only if you just need the product.

Choose an optional supplied and installed package where installation is available and you want the product and selected install options organised in one order.

Add common extras before checkout if your job needs additional parts, removal, access support or site-specific options.

It is a simpler way to organise the product, the selected extras and the parts of the job that matter most.

Important Installation Note

Installation availability, inclusions and add-ons vary by product type, service area, site access, existing services, selected options and property requirements.

Some jobs may require additional work, upgrades or checks before installation can proceed. Final suitability may need to be confirmed based on site conditions, plumbing, electrical requirements, valves, drainage, access and compliance requirements.

Fast Delivery and Install-Aligned Shipping

Installed Today makes delivery simple, whether you are ordering supply-only or choosing an optional install package.

For supply-only orders, you can select from available delivery options at checkout. For eligible orders with installation selected, shipping is included and coordinated to align with your selected installation period where possible.

Delivery Options

Same Day Delivery

Same day delivery may be available for selected hot water systems in Brisbane and Gold Coast metro areas when ordered before 7:00am.

Availability depends on stock, courier capacity, delivery location, product type and safe transport conditions.

Express Delivery

Express delivery is available on selected products and locations, with an estimated delivery timeframe of 1–4 business days.

Standard Delivery

Standard delivery is available on selected products, with an estimated delivery timeframe of 2–8 business days.

Free Shipping with Installation

When you select an eligible installation package, delivery is included as part of the supplied and installed order.

Your product delivery will be organised to align with your selected installation period where possible, helping avoid separate courier timing, storage issues or delays between delivery and installation.

Fast Metro Delivery

Most hot water orders in metro areas are delivered quickly, with many arriving within 1 business day depending on stock, location, order time and courier availability.

Weather and Transport Delays

Hot water systems are large, heavy products and cannot always be transported safely during rain or unsafe handling conditions.

Delivery timeframes may be affected if wet weather impacts loading, unloading, transport access or safe delivery conditions.

Express Delivery Refund

If your express delivery order takes longer than the estimated 1–4 business day express timeframe, your order will move to the standard 2–8 business day delivery timeframe and your express shipping charge will be refunded automatically.

Order Tracking

We will send your delivery details once your order has been dispatched or scheduled.

For supplied and installed orders, delivery timing may be coordinated around your selected installation period rather than sent as a separate courier-only delivery.

Need Help with Delivery?

Not sure whether to choose supply-only delivery or an optional install package? Contact our team before ordering and we can help you understand the best option for your product, location and timing.