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Henley Sherwood 21kW Boiler Eco Stove | ST473

HenleySKU: ST473

Sold out
Regular price €1,699.00
Click & Collect
Nationwide Delivery

Description

Henley Sherwood 21kW Boiler Eco Stove | ST473

The Henley Sherwood 21kW is a high-output multifuel boiler stove designed to heat both your room and your central heating system simultaneously. With a nominal output of 12.8kW (up to 21kW maximum), it delivers 8.1kW to the room and 4.7kW to water at nominal output, rising to 8.1kW room and 13kW water at maximum output. A+ energy rated, 80.1% efficient, and DEFRA exempt, it is one of the most powerful boiler stoves available for Irish homes. Backed by a 3-year warranty when registered online.

Key Features

  • 21kW maximum total heat output (12.8kW nominal)
  • 8.1kW to room and 4.7kW to water at nominal output
  • Up to 8.1kW to room and 13kW to water at maximum output
  • 80.1% efficiency, A+ energy rating
  • DEFRA exempt, suitable for smoke control areas
  • Multifuel, burns wood and solid fuel
  • External air connection for airtight and new-build homes
  • Clean burn tertiary air system for lower emissions
  • Advanced airwash system to keep the glass clear
  • Primary and secondary air controls
  • Cast iron door, matt black finish
  • 153mm flue outlet
  • 3-year warranty when registered online within 3 months of purchase

Room and Water Output Explained

The Sherwood 21kW splits its heat output between the room and your central heating system. At nominal burn, 8.1kW heats the room directly and 4.7kW goes to the water circuit. At maximum output, up to 13kW is delivered to the water, making it capable of replacing or significantly supplementing an oil or gas boiler in many Irish homes. This makes it an excellent choice for reducing reliance on fossil fuel central heating.

External Air

The Sherwood includes an external air connection, allowing combustion air to be drawn directly from outside the building rather than from the room. This is required for heat recovery ventilation systems in new-build and airtight homes, and improves overall efficiency.

Clean Burn System

A tertiary air system pushes hot air into the firebox above the normal flame height, allowing excess gases to combust fully for a cleaner, more efficient burn with lower particulate emissions.

Airwash

A specially placed vent draws air across the inside of the glass, keeping it clear and giving you an unobstructed view of the flame throughout the burn.

Warranty

Includes 1 year standard manufacturer's warranty. Register your stove online within 3 months of purchase to receive an additional 2 years, giving 3 years total cover.

Technical Specifications

Feature Specification
Brand Henley
SKU ST473
Type Multifuel boiler eco stove
Fuel Multifuel (wood and solid fuel)
Total Output (nominal) 12.8kW
Total Output (maximum) 21kW
Room Output (nominal) 8.1kW
Room Output (maximum) 8.1kW
Water Output (nominal) 4.7kW
Water Output (maximum) 13kW
Efficiency 80.1%
Energy Rating A+
DEFRA Exempt Yes
External Air Yes
Flue Size 153mm
Finish Matt black
Warranty 3 years (when registered online)

Shipping & Delivery

Ganly's offers both home delivery and Click-and-Collect options.

Home Delivery

Delivery Type Cost Notes
Local Delivery €15 Within 20km of Athlone, Mountbellew & Longford
Small Items €9.95 1–4 working days, nationwide
Medium / Large Items €29.95 3–10 working days, nationwide
Bulky / Oversized €49.95 3–10 working days, nationwide

We have partnered with DPD to provide fast and secure delivery anywhere in Ireland and Northern Ireland. To track your DPD parcel, click HERE.

DPD delivery covers all of Ireland and Northern Ireland for €9.95 up to 31kg. Excluding bulky and oversized items, we do not charge extra for multiple items shipping to the same address.

Please allow 1–4 working days for standard delivery. Large items, pallets, and bulky or oversized items can take up to 10 working days. Items that are special order from the manufacturer may take longer. You will be notified if there is an extended delivery time on any item you purchase.

We will notify you by email once your order has been dispatched and provide a tracking number so you can track your order. Our delivery drivers will call you approximately one hour before delivery. A signature is required on all deliveries.

Click-and-Collect

Any item ordered online can be collected from any Ganly's store. Simply choose the "Collect In-Store" option at checkout and select your preferred store, date, and time. We will have the item ready for you as quickly as possible.

Click-and-Collect orders do not incur a delivery charge. You will receive an email confirming when your item is ready for collection. Please bring a printed or digital copy of your order confirmation when collecting.

Order Processing & Shipping

We process orders 6 days a week, all year round, excluding bank holidays and public holidays. Our courier partners collect orders at 3pm Monday to Friday. Orders placed on Friday after 3pm will be collected the following Monday.

Please check the contents of your package on arrival. If any items are damaged during shipment, notify us immediately upon opening the package and retain all packaging materials.

Damages & Returns

When you purchase online, you have a statutory right to return a product (other than perishable goods) within 14 days of delivery (cooling-off period). We can amend or cancel an order up until it is dispatched. If the order has already been dispatched, you may return the product for a refund, excluding return delivery costs. If a product is damaged or faulty, please contact us and we will arrange a replacement or refund.

Please Note: We will not be liable for any failure to perform, or delay in performance of, any of our obligations under a contract caused by events outside our reasonable control (Force Majeure). This includes, without limitation: strikes, civil commotion, riot, invasion, terrorist attack, war, fire, explosion, storm, flood, earthquake, epidemic, or the impossibility of using public or private transport or telecommunications networks.

Contact Us
Phone: 090 643 5300
Email: info@ganlys.ie

Ganly's Returns — 3 Easy Ways

Step 1 — Return In-Store
Bring a copy of your emailed receipt along with the item to any Ganly's store for an exchange or refund.

Step 2 — Post or Courier
Send the item back via post or courier, including your order number and a contact phone number. Once we receive the item in its original condition, we will contact you to arrange your refund or exchange. If the item is not returned in full merchantable quality with original packaging, a discounted refund may apply.

Step 3 — We Collect It
Call us on (090) 643 5300 and we will arrange a courier collection from your address. This service costs €9.00, which will be deducted from your refund or exchange amount. Available for addresses within the island of Ireland only.

Return Address:

Ganly's Athlone
Roscommon Road,
Athlone,
Co. Westmeath
N37 K303

Phone: (090) 643 5300
Email: info@ganlys.ie

Please Note: Refunds exclude delivery charges. All items must be returned in their original condition, including manufacturer's packaging, tags, documentation, and any accessories. Items must be returned within 14 days of receiving your order.

Returns Policy

When you make an online purchase you have a statutory right to return goods up to 14 days after receiving your order: this is the cooling off period. For our full Returns Policy

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Google Pay
  • Maestro
  • Mastercard
  • Shop Pay
  • Union Pay
  • Visa

We ensure secure processing of your payment information and do not retain or have any access to your credit card details.

Product Questions & Answers

How is the Henley Sherwood 21kW output divided, and how many radiators can it heat?

The manufacturer’s 21kW test rating divides the output into approximately 13kW for the water and 8.1kW for the room. Henley does not guarantee a fixed radiator count because capacity depends on radiator sizes, property heat loss, pipework and domestic-hot-water demand. A heating engineer should size the system using the 13kW water output rather than relying on retailer claims such as “12–14 radiators.”

Can the Sherwood 21kW work with an existing oil-fired heating system?

Henley strongly recommends that its boiler stoves are plumbed independently and advises against operating a combined oil and solid-fuel system simultaneously. The system design must safely distribute the stove’s water output and should be completed by a qualified METAC or HETAS heating installer. The stove also requires an external-air connection and a suitable 153mm flue.

What fuels can be burned in the Henley Sherwood 21kW Boiler Stove?

The Sherwood is a multi-fuel stove suitable for seasoned firewood with less than 20% moisture, anthracite and manufactured smokeless briquettes approved for closed appliances. The manual recommends logs no larger than approximately 200mm long by 100mm in diameter. Do not burn bituminous coal, petroleum coke, treated timber, construction wood, pallets or household waste

Does Ganly’s deliver throughout Ireland and offer Click & Collect?


Yes. Ganly’s offers nationwide delivery across Ireland, with delivery charges and times based on the size and type of product ordered. Qualifying parcels up to 31kg can also be delivered throughout Ireland and Northern Ireland. Next-working-day delivery is available on eligible small items ordered before 3pm, while large, bulky and palletised products may take longer. Free Click & Collect is available from Ganly’s Athlone, Longford and Mountbellew stores

Can Ganly’s calculate material quantities and provide a project quotation?

Yes. Ganly’s can assist homeowners, builders and contractors with product selection, specification guidance, quantity planning, material take-offs, bulk orders and delivery scheduling. Project support is available across ranges including timber, insulation, roofing, cement and aggregates, drainage and other building materials. To discuss your renovation, construction or home-improvement project, call 090 643 5300, email info@ganlys.ie, or contact the Ganly’s team.

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