Compress 3400i Outdoor Unit and Tower Unit Compress 3400i Outdoor Unit and Tower Unit
Compress 3400i Outdoor Unit and Tower Unit Compress 3400i Outdoor Unit and Tower Unit

Compress 3400i Outdoor Unit and Tower Unit overview

Flexible, future-proofed heating

Providing heating and hot water all from the natural temperature of the great outdoors, the CS3400i split air to water heat pump is perfect for your home and the planet. Super quiet, efficient and compact, without sacrificing on power, this heat pump packs enough punch to keep you warm all year round.

ERP Labels:

ERP datasheets:

Main features

  • Quiet operation
  • Inverter-driven compressor
  • Integrated drain pan
  • Coastal protection as standard
  • Integral 190 DHW Tank
  • Electric booster heater (standard)
  • Large high resolution display
How can I purchase a Worcester product?

CS3400iAWS 4 OR-S

Energy Efficiency Class (35°C)
A+++
Energy Efficiency Class (55°C)
A++
Water Heating Efficiency Class
N/A
Water Heating Declared Load Profile
N/A
Heating Power at A2 / W35
3.81
Coefficient of Performance (COP) at +7 / W35
4.68
Sound pressure level at a distance of 1 m dB(A)
53
Sound Power Level Outdoors (dBA)
61

CS3400iAWS 6 OR-S

Energy Efficiency Class (35°C)
A+++
Energy Efficiency Class (55°C)
A+
Water Heating Efficiency Class
N/A
Water Heating Declared Load Profile
N/A
Heating Power at A2 / W35
5.98
Coefficient of Performance (COP) at +7 / W35
4.68
Sound pressure level at a distance of 1 m dB(A)
51
Sound Power Level Outdoors (dBA)
59

CS3400iAWS 8 OR-S

Energy Efficiency Class (35°C)
A+++
Energy Efficiency Class (55°C)
A++
Water Heating Efficiency Class
N/A
Water Heating Declared Load Profile
N/A
Heating Power at A2 / W35
7.35
Coefficient of Performance (COP) at +7 / W35
4.7
Sound pressure level at a distance of 1 m dB(A)
51
Sound Power Level Outdoors (dBA)
59

CS3400iAWS 10 OR-S

Energy Efficiency Class (35°C)
A+++
Energy Efficiency Class (55°C)
A++
Water Heating Efficiency Class
N/A
Water Heating Declared Load Profile
N/A
Heating Power at A2 / W35
7.85
Coefficient of Performance (COP) at +7 / W35
4.43
Sound pressure level at a distance of 1 m dB(A)
51
Sound Power Level Outdoors (dBA)
59

Find a local installer

Each heating system needs custom designing. Find and contact a Worcester Accredited Installer in your area to book a home visit and get a free quote.

Find the right boiler for you

Our Find a New Boiler tool is the easiest way to find and compare Worcester products which are suitable for your home and heating requirements and only takes a few minutes.

Find the right boiler for you