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Vaillant EcoTec Plus 620 System Boiler – IFC

Vaillant EcoTec Plus 620

SKU: 10-103-08

£3,488.00

MSRP:

Starting from £3,488.00
Instant Advice Options
What's Included
A powerful system boiler ideal for small to medium homes. Delivering exceptional performance and efficiency to keep your bills low, this model is Quiet Mark accredited and backed by a 10-year guarantee. Reliable and built to last!
  • With an ERP rating of A and efficiency of 93%
  • Central heating output of 18kW
  • Vaillant boilers rated 4.6 on TrustPilot
  • WarmZilla is a trusted Vaillant Installer
GET QUOTE

We offer fast and reliable boiler installations within 48 hours.

Every one of our engineers are Gas-Safe Registered.

We cover every UK postcode.

Rated Excellent on Trustpilot.

Don't Just Take Our Word For It: See Why UK Homeowners Trust WarmZilla!

Partner of CompareTheMarket & MoneySuperMarket

Trust Pilot Star

Rated Excellent on Truspilot

Trusted Partner of Checkatrade

The Vaillant ecoTEC Plus 620 is a powerful and efficient heat-only boiler designed for medium to large homes with higher heating and hot water demands. Combining Vaillant’s trusted German engineering with advanced efficiency technology, it delivers reliable performance, excellent energy savings, and long-term durability.

Its compact, wall-mounted design allows for flexible installation in a variety of spaces, including kitchen cupboards and utility areas. Quiet Mark certification ensures whisper-quiet operation, while premium internal components enhance reliability and maintain consistent heating comfort throughout the year.

Backed by a 10-year parts and labour guarantee, the ecoTEC Plus 620 provides total peace of mind. For homeowners looking for a powerful, efficient, and quiet heating solution from one of the UK’s most respected boiler brands, the Vaillant ecoTEC Plus 620 is a superb choice.

We offer fast and reliable boiler installations within 48 hours.

We cover every UK postcode.

Trustpilot
kW Output
18 KW
ERP Rating
A Rated
Energy Efficiency
93 %
Dimensions
Height 720mm
Width 440mm
Depth 320mm
10 year guarantee
Which? Best Buy Product
High performance, control and efficiency
Precision heating to reduce your fuel bills
Quiet Mark
Hand-built in our award-winning Derbyshire manufacturing plant
Vaillant boilers rated 4.6 on TrustPilot
Rewire Current Thermostat
Installation by a local Gas Safe Engineer (arriving between 8-11am)
Removal of existing system (inclusive of tanks if applicable)
Removal of installation rubbish off site including boiler
Boiler flue installation
Magnetic filter for ongoing protection
System cleanse of your heating system
Inhibitor and System cleaner for protection
Condensate pipework or upgrade (if applicable)
Gas pipe upgrade (if required)
Copper and fittings pack with pipe work installation
Re-wire of existing controls
CO Alarm included
Delivery of package via courier or your local engineer
12-month WarmZilla workmanship warranty
Registration of warranty and Building Control Certificate by WarmZilla
Warranty includes parts and labour free via the manufacturer
Full protection of property, surfaces, and workspace throughout installation
Handover of your new boiler, including control panel and pressure top-up guide
Removal of redundant pipework and accessories (where necessary)
Removal of any old or unused controls (if applicable)
Sealing of external flue and condensate pipework to the building fabric
Making good of any brickwork around the flue exit
Commissioning of your new boiler for full operation
Balancing of your heating system (if required)
Final tidy-up and removal of all protective coverings
£3,488.00 inc.VAT Fixed Quote