As a leading boiler parts supplier, we offer a wide range of:
- OEM (New and Refurbished)
- Compatible (New and Refurbished)
- Refurbished parts
National Boiler Spares is the only company in the UK that is accredited to:
- BSI KITEMARK (Refurbished parts)
- ISO 9001:2015
- ISO 14001:2015
Assuring all our customers we provide the highest level of quality parts and services.
DIRECT SALE
Directly purchasing the product from us
REPAIR SERVICE
Please be aware that we will repair your part, no part will be sent to you from us.
An email will be sent to you confirming your order, please note that it will state that your order
has been dispatched but no part at this point will be dispatched, please send your part to us for
repair
How does this service works?
- When purchasing this service, the customer is required to send the faulty part to us.
- Once we have received the part, it will be inspected and tested by our engineers to assess any faults
- If your part is in repairable condition, then we will repair this for you. If there are any issues, you will be contacted by our Customer Service Team
- Once repaired, we will send your part back to you
ADVANCE REPLACEMENT SERVICE
Upon selecting this service you are purchasing a DIRECT PART from us, but you have the option to
send your old part to us for a partial refund.
This service will entitle you to a £30 refund only if::
- Your old part is in a repairable condition
- Your part is not burned, or water damaged beyond repair
- We receive the part within 14 DAYS of the purchase
The customer is responsible for all postage and packaging costs.
The original invoice and contact details must be sent to us with the part to allow for a refund.
Wallsend, Tyne And Wear, NE28 6SG.
Your refund will be processed via the original payment method.
*Note to customer* Not all of our products are applicable for each service.
- DIRECT SALE
- REPAIR SERVICE
- ADVANCE REPLACEMENT SERVICE
Once you have selected the part you need, the drop-down options will show you what is available for
that part.
Please contact our Customer Service Team for support or information if required
OUR ADDRESS
Heating Trade Supplies, Tyne View Terrace
Wallsend, Tyne and Wear, NE28 6SG.
We provide free first-class postage for UK and mainland areas. Orders must be placed
before 3 pm Monday to Friday for same-day dispatch. If purchased Saturday, Sunday and
Bank Holidays, it will be processed and dispatched the next working day.
DELIVERY TIME
We offer free next day delivery on orders over £35.
All parts ordered before 3pm Monday – Friday will be dispatched the same day, (Friday
orders will be delivered the next working day), however next day delivery cannot be
guaranteed.
WARRANTY
All our products are subject to 1 YEAR WARRANTY.
All warranty returns must be sent with a copy of the invoice and contact details.
Once received our engineers will test the part and if required one of our Customer
Services specialists will contact you with an update.
Exclusions to warranty:
Fans: Fan coils and motors failing due to boiler overheating will not be covered
under warranty.
For Electronic parts such as Printed Circuit Boards (PCB): if the parts have
experienced any water damage or external electrical shortage this will not be covered by
warranty.
Failures or defects caused by misuse.
RETURNS POLICY
Complete the return form and provide return reasons.
If the part you received is faulty, we will refund postage up to £6.50.
A 20% restocking fee is applied if returned items are not faulty.
If your part is lost or the incorrect item has been sent out, we will arrange a
collection and issue the appropriate replacement.
Your refund will be processed via the original payment method.
BAXI DUO TEC COMBI 24 28 HE & HE A EXPANSION VESSEL 8 LITRE 5114691
This part fits the following boilers:
Baxi PLATINUM COMBI HE 24
Baxi PLATINUM COMBI HE 28
Baxi PLATINUM COMBI HE 30
Baxi SOLO HE 12
Baxi SOLO HE A 12
Baxi SOLO HE 15
Baxi SOLO HE A 15
Baxi SOLO HE 18
Baxi 15 HE SYSTEM
Baxi 18 HE SYSTEM
Baxi 24 HE SYSTEM (AFTER SERIAL NO BTF 0932)
Baxi 24 HE SYSTEM (BEFORE SERIAL NO BTF 0932)
Baxi 28 HE SYSTEM (AFTER SERIAL NO CAB 1112)
Baxi 28 HE SYSTEM (BEFORE SERIAL NO CAB 1112)
Baxi 32 HE SYSTEM
Baxi MEGAFLO HE A SYSTEM 15
Baxi MEGAFLO HE A SYSTEM 18
Baxi MEGAFLO HE A SYSTEM LPG 18
Baxi MEGAFLO HE A SYSTEM 24
Baxi MEGAFLO HE A SYSTEM 28
Baxi MEGAFLO HE A SYSTEM LPG 28
Baxi MEGAFLO HE A SYSTEM 32
Baxi MEGAFLO HE A SYSTEM LPG 32
Baxi DUOTEC HE 24
Baxi DUOTEC HE A 24
Baxi DUOTEC HE LPG 24
Baxi DUOTEC HE 28
Baxi DUOTEC HE A 28
Baxi DUOTEC HE LPG 28
Baxi DUOTEC 33 HE
Baxi DUOTEC 24 Combi ErP (SERIAL NO. ENDING AC ISSUE 3)
Baxi DUOTEC 24 Combi ErP (SERIAL NO. ENDING BC ISSUE 2)
Baxi DUOTEC 24 Combi ErP (SERIAL NO. ENDING CC )
Baxi DUOTEC 24 Combi ErP (SERIAL NO. ENDING DC )
Baxi DUOTEC 28 Combi ErP (SERIAL NO. ENDING AC ISSUE 3)
Baxi DUOTEC 28 Combi ErP (SERIAL NO. ENDING BC ISSUE 3)
Baxi DUOTEC 28 Combi ErP (SERIAL NO. ENDING CC )
Baxi DUOTEC 28 Combi ErP (SERIAL NO. ENDING DC )
Baxi DUOTEC 33 Combi ErP (SERIAL NO. ENDING AC ISSUE 3)
Baxi DUOTEC 33 Combi ErP (SERIAL NO. ENDING BC ISSUE 2)
Baxi DUOTEC 33 Combi ErP (SERIAL NO. ENDING CC )
Baxi DUOTEC 33 Combi ErP (SERIAL NO. ENDING DC )
Baxi DUOTEC 40 Combi ErP (SERIAL NO. ENDING AC ISSUE 3)
Baxi DUOTEC 40 Combi ErP (SERIAL NO. ENDING BC ISSUE 2)
Baxi DUOTEC 40 Combi ErP (SERIAL NO. ENDING CC )
Baxi DUOTEC 40 Combi ErP (SERIAL NO. ENDING DC )
Baxi 24 COMBI ERP (SERIAL NO ENDING CC)
Baxi 24 COMBI ERP (SERIAL NO ENDING DC)
Baxi 24 COMBI ERP (SERIAL NO ENDING EC)
Baxi 24 COMBI Erp (SERIAL NO. ENDING IN AC ISSUE 2)
Baxi 24 COMBI Erp (SERIAL NO. ENDING IN BC ISSUE 2)
Baxi 28 COMBI ERP (SERIAL NO ENDING CC)
Baxi 28 COMBI ERP (SERIAL NO ENDING DC)
Baxi 28 COMBI ERP (SERIAL NO ENDING EC)
Baxi 28 COMBI Erp (SERIAL NO. ENDING IN AC ISSUE 2)
Baxi 28 COMBI Erp (SERIAL NO. ENDING IN BC ISSUE 2)
Baxi 33 COMBI ERP (SERIAL NO ENDING CC)
Baxi 33 COMBI ERP (SERIAL NO ENDING DC)
Baxi 33 COMBI ERP (SERIAL NO ENDING EC)
Baxi 33 COMBI Erp (SERIAL NO. ENDING IN AC ISSUE 2)
Baxi 33 COMBI Erp (SERIAL NO. ENDING IN BC ISSUE 2)
Baxi 40 COMBI ERP (SERIAL NO ENDING CC)
Baxi 40 COMBI ERP (SERIAL NO ENDING DC)
Baxi 40 COMBI ERP (SERIAL NO ENDING EC)
Baxi 40 COMBI Erp (SERIAL NO. ENDING IN AC ISSUE 2)
Baxi 40 COMBI Erp (SERIAL NO. ENDING IN BC ISSUE 2)
Main 24 SYSTEM ECO ELITE
Main 25 Eco Elite POST SERIAL NUMBER MMH 1512
Main 25 Eco Elite PRE SERIAL NUMBER MMH 1512
Main 30 Eco Elite POST SERIAL NUMBER MMH 1512
Main 30 Eco Elite PRE SERIAL NUMBER MMH 1512
Main 24 SYSTEM Erp (SERIAL NO ENDING AC)
Main 24 SYSTEM Erp (SERIAL NO ENDING BC)
Main 24 SYSTEM Erp (SERIAL NO ENDING CC)
Main 24 SYSTEM Erp (SERIAL NO ENDING DC)
Main 24 SYSTEM ECO
Main 25 COMBI ERP (SERIAL NO ENDING AC)
Main 25 COMBI ERP (SERIAL NO ENDING BC)
Main 25 COMBI ERP (SERIAL NO ENDING CC)
Main 25 COMBI ERP (SERIAL NO ENDING DC)
Main 25 COMBI ERP (SERIAL NO ENDING EC)
Main 25 COMBI ECO
Main 28 SYSTEM Erp (SERIAL NO ENDING AC)
Main 28 SYSTEM Erp (SERIAL NO ENDING BC)
Main 28 SYSTEM Erp (SERIAL NO ENDING CC)
Main 28 SYSTEM Erp (SERIAL NO ENDING DC)
Main 30 COMBI ERP (SERIAL NO ENDING AC)
Main 30 COMBI ERP (SERIAL NO ENDING BC)
Main 30 COMBI ERP (SERIAL NO ENDING CC)
Main 30 COMBI ERP (SERIAL NO ENDING DC)
Main 30 COMBI ERP (SERIAL NO ENDING EC)
Main 30 COMBI ECO
Potterton GOLD 24 COMBI ERP (SERIAL NO ENDING DC)
Potterton GOLD 24 COMBI ERP (SERIAL NO ENDING EC)
Potterton GOLD 28 Combi ErP (Serial no Ending AC)
Potterton GOLD 28 Combi ErP (Serial no Ending BC & CC)
Potterton GOLD 28 COMBI ERP (SERIAL NO ENDING DC)
Potterton GOLD 28 COMBI ERP (SERIAL NO ENDING EC)
Potterton GOLD 33 Combi ErP (Serial no Ending AC)
Potterton GOLD 33 Combi ErP (Serial no Ending BC & CC)
Potterton GOLD 33 COMBI ERP (SERIAL NO ENDING DC)
Potterton GOLD 33 COMBI ERP (SERIAL NO ENDING EC)
Potterton GOLD SYSTEM 18 HE A
Potterton GOLD SYSTEM 24 HE A
Potterton GOLD SYSTEM 18 Erp serial no. ending in AC
Potterton GOLD SYSTEM 18 Erp serial no. ending in BC & CC
Potterton GOLD SYSTEM 18 Erp serial no. ending in DC
Potterton GOLD SYSTEM 24 Erp serial no. ending in AC
Potterton GOLD SYSTEM 24 Erp serial no. ending in BC & CC
Potterton GOLD SYSTEM 24 Erp serial no. ending in DC
Potterton GOLD SYSTEM 28 Erp serial no. ending in AC
Potterton GOLD SYSTEM 28 Erp serial no. ending in BC & CC
Potterton GOLD SYSTEM 28 Erp serial no. ending in DC
Potterton HEATMAX COMBI 24 HE
Potterton HEATMAX COMBI 28 HE
Potterton PROMAX COMBI 24 ERP (SERIAL NO ENDING AC)
Potterton PROMAX COMBI 24 ERP (SERIAL NO ENDING BC & CC)
Potterton PROMAX COMBI 24 ERP (SERIAL NO ENDING DC)
Potterton PROMAX COMBI 24 ERP (SERIAL NO ENDING EC)
Potterton PROMAX COMBI 28 ERP (SERIAL NO ENDING AC)
Potterton PROMAX COMBI 28 ERP (SERIAL NO ENDING BC & CC)
Potterton PROMAX COMBI 28 ERP (SERIAL NO ENDING DC)
Potterton PROMAX COMBI 28 ERP (SERIAL NO ENDING EC)
Potterton PROMAX COMBI 33 ERP (SERIAL NO ENDING AC)
Potterton PROMAX COMBI 33 ERP (SERIAL NO ENDING BC & CC)
Potterton PROMAX COMBI 33 ERP (SERIAL NO ENDING DC)
Potterton PROMAX COMBI 33 ERP (SERIAL NO ENDING EC)
Potterton PROMAX COMBI 24 HE PLUS
Potterton PROMAX COMBI 24 HE PLUS A
Potterton PROMAX COMBI 24 HE PLUS LPG
Potterton PROMAX COMBI 28 HE PLUS
Potterton PROMAX COMBI 28 HE PLUS A
Potterton PROMAX COMBI 33 HE PLUS
Potterton PROMAX COMBI 33 HE PLUS A
Potterton PROMAX 12 HE PLUS A SYSTEM
Potterton PROMAX 12 HE PLUS SYSTEM
Potterton PROMAX 15 HE PLUS A SYSTEM
Potterton PROMAX 15 HE PLUS SYSTEM
Potterton PROMAX 18 HE PLUS A SYSTEM
Potterton PROMAX 18 HE PLUS SYSTEM
Potterton PROMAX 24 HE PLUS A SYSTEM (AFTER SERIAL NO. AWD 0932)
Potterton PROMAX 24 HE PLUS A SYSTEM (BEFORE SERIAL NO. AWD 0932)
Potterton PROMAX 24 HE PLUS SYSTEM
Potterton PROMAX SYSTEM 12 ERP (SERIAL NO ENDING AC)
Potterton PROMAX SYSTEM 12 ERP (SERIAL NO ENDING BC & CC)
Potterton PROMAX SYSTEM 12 ERP (SERIAL NO ENDING DC)
Potterton PROMAX SYSTEM 15 ERP (SERIAL NO ENDING AC)
Potterton PROMAX SYSTEM 15 ERP (SERIAL NO ENDING BC & CC)
Potterton PROMAX SYSTEM 15 ERP (SERIAL NO ENDING DC)
Potterton PROMAX SYSTEM 18 ERP (SERIAL NO ENDING AC)
Potterton PROMAX SYSTEM 18 ERP (SERIAL NO ENDING BC & CC)
Potterton PROMAX SYSTEM 18 ERP (SERIAL NO ENDING DC)
Potterton PROMAX SYSTEM 24 ERP (SERIAL NO ENDING AC)
Potterton PROMAX SYSTEM 24 ERP (SERIAL NO ENDING BC & CC)
Potterton PROMAX SYSTEM 24 ERP (SERIAL NO ENDING DC)
Potterton PROMAX SYSTEM 32 ERP (SERIAL NO ENDING AC)
Potterton PROMAX SYSTEM 32 ERP (SERIAL NO ENDING BC & CC)
Potterton PROMAX SYSTEM 32 ERP (SERIAL NO ENDING DC)
Potterton Titanium 24
Potterton Titanium 28
Potterton Titanium 24 combi Erp (serial no. ending in AC)
Potterton Titanium 24 combi Erp (serial no. ending in BC & CC)
Potterton Titanium 24 combi Erp (serial no. ending in DC)
Potterton Titanium 24 combi Erp (serial no. ending in EC)
Potterton Titanium 28 combi Erp (serial no. ending in AC)
Potterton Titanium 28 combi Erp (serial no. ending in BC & CC)
Potterton Titanium 28 combi Erp (serial no. ending in DC)
Potterton Titanium 28 combi Erp (serial no. ending in EC)
Potterton Titanium 33 combi Erp (serial no. ending in AC)
Potterton Titanium 33 combi Erp (serial no. ending in BC & CC)
Potterton Titanium 33 combi Erp (serial no. ending in DC)
Potterton Titanium 33 combi Erp (serial no. ending in EC)
Potterton Titanium 40 combi Erp (serial no. ending in AC)
Potterton Titanium 40 combi Erp (serial no. ending in BC & CC)
Potterton Titanium 40 combi Erp (serial no. ending in DC)
Potterton Titanium 40 combi Erp (serial no. ending in EC)