AMBIRAD STHTX30S HEAT EXCHANGER STAINLESS STEEL 125 (36

  • Our Part No: 4421320
  • MPN: STHTX30S
Free UK Delivery

£1645.28inc VAT

£1,371.07 ex VAT

Available in 5-7 days

  • Free UK Delivery

    This product is eligible for free UK delivery.

Why Choose DHS?

  • Browse more products in the
    Water Heater Spares category

  • Browse more products from
    Ambirad

  • Secure Express Checkout
    with a selection of payment options

  • 12 Month Warranty
    On all parts

AMBIRAD STHTX30S HEAT EXCHANGER STAINLESS STEEL 125 (36.

Product Information: There are two different types of heat exchanger that can be installed, the primary heat exchanger and the secondary heat exchanger. The primary is present in almost all boilers and it allows the heat to be transferred from the burner to the water within the system. The secondary heat exchanger only appears on combination boilers and allows the heat to be transferred from one closed system to another.

We only have this part as fitting one appliance, The Ambirad ST125 (SN STARTS ST2) . If this isn't the model you have, please contact us before ordering. This way we can check if this part is compatible. In the next tab there is an appliance grid with a link to the Ambirad ST125 (SN STARTS ST2) , Please follow this link to view all parts available for that model.

We recommend that all parts are fitted by a fully qualified gas safe certified plumber. Please feel free to contact us if you require our assistance locating a part. Collectively we have over 200 years of boiler spares knowledge and distribution experience and our friendly call centre staff will be happy to help you with any query you may have


The AMBIRAD STHTX30S HEAT EXCHANGER STAINLESS STEEL 125 (36 is a genuine, brand new Ambirad product, covered by a Ambirad manufacturer's guarantee.

Not what you're looking for? Try our unique Spares Finder tool or you can view all Ambirad products.

For advice on this or any product, please call us on 0330 123 3707, email us at web@dhsspares.co.uk, or see additional ways to contact us here.

  • Brand: Ambirad
  • Name: AMBIRAD STHTX30S HEAT EXCHANGER STAINLESS STEEL 125 (36
  • MPN: STHTX30S
  • Our Part No: 4421320
  • Categories:
  • Availability: Available in 5-7 working days
  • Condition: Brand new
  • Guarantee: Yes
  • Returns: 30 days

This part fits the following 1 appliances (sorted alphabetically):

May fit others. If you are unsure of your product model, or would like more information, please contact us.

At DHS we offer a range of product options to suit different budgets and requirements, while maintaining quality and reliability across all categories.

Below is an explanation of each product type available on our website. Please note that not all products will have all options available.

Unbranded Part

BEST VALUE

Unbranded Component Product. Genuine manufacturer component, but no branded packaging.

  • Sourced Directly from the Manufacturer
  • Supplied in Unbranded Packaging
  • Same Quality & Function as OEM Version
  • Cost Effective Alternative
  • 12 Month Warranty

Branded Part

ORIGINAL PART

Original Equipment Manufacturer Component with branded packaging.

  • Genuine Original Part
  • Sourced Directly from the Manufacturer
  • Manufacturers Official Packaging
  • Trusted Manufacturer Quality
  • 12 Month Warranty

Alternative Part

Compatible replacement parts sourced from a third party Manufacturer.

  • Lower Cost Replacement Option
  • Fully Functional Alternative
  • Appearance, design or materials may differ from the original part
  • 12 Month Warranty

Refurbished Part

Original OEM components that have been professionally refurbished.

  • Genuine OEM Component Professionally Refurbished and Tested
  • Environmentally Conscious Choice
  • Excellent Value for Money
  • 12 Month Warranty

Need Help Choosing?

If you are unsure of which product category is right for your repair or installation, our team is happy to help.

Contact us for expert advice on compatibility, pricing and availability.

Why buy from Direct Heating Spares?

There are many great reasons to choose us over our competitors!

  • Trading since 2006, we are the UK's top supplier of boiler and heating spares.
  • Official stockists for over 100 leading UK and European brands.
  • Over 20,000 parts stocked in our UK warehouse located in Chorley, Lancashire.
  • Competitive pricing with a secure checkout and a choice of payment methods.
  • We offer multiple options for delivery and collection.
  • Our team are available every day (excluding bank holidays) should you need support.
  • Generous returns policy of 30 days as standard.
  • We are passionate about giving back to charity.

This product is eligible for free UK delivery.

We offer several delivery options, leveraging our long-standing relationships with trusted and reputable UK couriers.

We also partner with UPS to allow you to collect your order from over 3,000 Access Points across the country at your convenience, including local shops and newsagents.

The full selection of these will be shown at the Basket stage. Simply add your desired product(s) to your Basket and the most appropriate delivery options will be dynamically calculated for you.

Please see our Delivery Options page for more information.

We are proud to offer a generous returns policy of 30 days as standard to all online customers.

Please see our Returns Policy here for more information and exclusions.

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