Glow-Worm 20010866 Heat Exchanger Insulation - Genuine Glow-Worm Product
- SKU
- EDDGLOWWORM119
Our Expert's Opinion
"A manufacturer‑approved insulation component that enhances thermal performance and helps protect internal parts from heat stress."Glow-Worm 20010866 Heat Exchanger Insulation
As a genuine Glow‑Worm spare part, the 20010866 insulation is manufactured to original equipment specifications for thickness, thermal conductivity, and material durability under repeated heating cycles. Heat exchangers operate at high temperatures and are central to the boiler’s ability to transfer combustion heat into the water circuit; if heat is lost unnecessarily to the casing or adjacent parts, the boiler must work harder to maintain set temperatures. This not only reduces efficiency but can increase wear on other components such as the pump, gas valve, and control electronics due to more frequent firing cycles.
Proper insulation around the heat exchanger also helps protect nearby wiring and sensitive components from excessive heat exposure, which can shorten their service life or lead to thermal degradation. Over time, insulation materials can deteriorate through thermal fatigue, moisture ingress, or physical compression, leading to increased heat loss, reduced efficiency, and inconsistent temperature control. Replacing a worn or compromised insulation panel with this OEM component restores intended thermal barriers, improves energy use, and helps maintain stable internal temperatures that support consistent boiler performance.
Installation of internal insulation should be carried out by a qualified heating engineer to ensure correct placement, secure fitment, and preservation of all safety and performance standards. Correctly installed insulation contributes not only to efficiency gains but also to quieter operation and reduced thermal stress on the boiler’s internal architecture.
Glow-Worm provide a 1 year warranty on all genuine spare parts. Electrical Deals Direct now sells a wide range of spare parts. If you cannot see the item you require on our website, please call 01934 253600 or email [email protected] for more information.
This is a genuine Glow-Worm spare part supplied directly from the manufacturer. We ensure full compatibility, reliable performance and the highest quality standards.
| MPN | 20010866 |
|---|---|
| Product Code | EDDGLOWWORM119 |
| Part Origin | Genuine |
Delivery Information -
Standard delivery for all orders over £150 ex-VAT are free of charge.
If we can speed this up, we will, but you can also select Express Delivery when you check out and get your purchase more quickly (usually the next working day, subject to a 1pm cut-off): there is an extra charge for this ranging from £5 to £29.99 depending on the products you are buying.
We partner with several of the best UK carriers (such as TNT, Royal Mail, DPD etc) depending on the type of product and the warehouse it is coming from, and also with some pallet companies for larger items. All of these operate during normal Monday – Friday working hours, and we expect all deliveries to arrive in 5 days. For more details checkout this page.
Gledhill Cylinders – Delivery Charge -
For all Gledhill Cylinders, a flat delivery charge of £27.50 (ex-VAT) applies, regardless of order value or delivery method. This will be added automatically at checkout.
Returns Information -
Having to return a product because it doesn’t fit, or is not what you wanted, is really annoying! To try and make sure this isn’t necessary we have lots of helpful advice on our site, and you should feel free to call our experts on the number above to check if you are in any doubt at all – we’re always happy to help.
But if you do, don’t worry, just contact us and we’ll get it sorted (note that for trade customers there may be a restocking fee). If you need it, we can usually arrange the carrier to pick it up.
For full details of our policy, check out the small print here.
Glow-Worm 20010866 Heat Exchanger Insulation
As a genuine Glow‑Worm spare part, the 20010866 insulation is manufactured to original equipment specifications for thickness, thermal conductivity, and material durability under repeated heating cycles. Heat exchangers operate at high temperatures and are central to the boiler’s ability to transfer combustion heat into the water circuit; if heat is lost unnecessarily to the casing or adjacent parts, the boiler must work harder to maintain set temperatures. This not only reduces efficiency but can increase wear on other components such as the pump, gas valve, and control electronics due to more frequent firing cycles.
Proper insulation around the heat exchanger also helps protect nearby wiring and sensitive components from excessive heat exposure, which can shorten their service life or lead to thermal degradation. Over time, insulation materials can deteriorate through thermal fatigue, moisture ingress, or physical compression, leading to increased heat loss, reduced efficiency, and inconsistent temperature control. Replacing a worn or compromised insulation panel with this OEM component restores intended thermal barriers, improves energy use, and helps maintain stable internal temperatures that support consistent boiler performance.
Installation of internal insulation should be carried out by a qualified heating engineer to ensure correct placement, secure fitment, and preservation of all safety and performance standards. Correctly installed insulation contributes not only to efficiency gains but also to quieter operation and reduced thermal stress on the boiler’s internal architecture.
Glow-Worm provide a 1 year warranty on all genuine spare parts. Electrical Deals Direct now sells a wide range of spare parts. If you cannot see the item you require on our website, please call 01934 253600 or email [email protected] for more information.
This is a genuine Glow-Worm spare part supplied directly from the manufacturer. We ensure full compatibility, reliable performance and the highest quality standards.
| MPN | 20010866 |
|---|---|
| Product Code | EDDGLOWWORM119 |
| Part Origin | Genuine |
Delivery Information -
Standard delivery for all orders over £150 ex-VAT are free of charge.
If we can speed this up, we will, but you can also select Express Delivery when you check out and get your purchase more quickly (usually the next working day, subject to a 1pm cut-off): there is an extra charge for this ranging from £5 to £29.99 depending on the products you are buying.
We partner with several of the best UK carriers (such as TNT, Royal Mail, DPD etc) depending on the type of product and the warehouse it is coming from, and also with some pallet companies for larger items. All of these operate during normal Monday – Friday working hours, and we expect all deliveries to arrive in 5 days. For more details checkout this page.
Gledhill Cylinders – Delivery Charge -
For all Gledhill Cylinders, a flat delivery charge of £27.50 (ex-VAT) applies, regardless of order value or delivery method. This will be added automatically at checkout.
Returns Information -
Having to return a product because it doesn’t fit, or is not what you wanted, is really annoying! To try and make sure this isn’t necessary we have lots of helpful advice on our site, and you should feel free to call our experts on the number above to check if you are in any doubt at all – we’re always happy to help.
But if you do, don’t worry, just contact us and we’ll get it sorted (note that for trade customers there may be a restocking fee). If you need it, we can usually arrange the carrier to pick it up.
For full details of our policy, check out the small print here.
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