Worcester Bosch Logo
Skip to content
Worcester Bosch Logo
  • Homeowner
  • Professional
  • Login
  • Products
    • View all products
    • Boilers
      • Lifestyle
      • Find a Boiler
    • Boiler Controls
      • Bosch EasyControl
    • Cylinders
      • Unvented Cylinders
      • Unvented Solar Cylinders
    • Solar
      • Greenskies Solar Lito
      • Greenskies Solar Lifestyle
    • Heat Pumps
      • Air to air Heat Pump
      • Ground Source Heat Pump
    • Accessories
      • Flues
      • Greenstar System Filter
      • Keyless Filling Link
    • Commercial Heating
      • Bosch Industrial
  • Training
    • View training
    • Training
    • Courses
    • Locations
    • Mobile Training
    • Apprenticeships
    • eAcademy
  • Spares
    • Spares
  • Specifiers
    • Specifiers
    • Specifiers
    • Worcester Quality
    • Heating Design Service
    • Case Studies
    • Corporate Social Responsibility
  • Support
    • Support hub
    • Local Contacts
    • Literature
    • Register Guarantee
    • ErP Directive
    • Troubleshooting
    • Image Library
    • Send Enquiry
    • Boiler Plus
  • More
    • View more
    • News
    • Join our loyalty scheme
    • Promotions
    • Events & Exhibitions
    • Stoves
    • Worcester Bosch Professional App
  • Homeowner
  • Professional
  • Login
Refocus on main menu
  • View all products
  • Boilers
    • Lifestyle
    • Find a Boiler
  • Boiler Controls
    • Bosch EasyControl
  • Cylinders
    • Unvented Cylinders
    • Unvented Solar Cylinders
  • Solar
    • Greenskies Solar Lito
    • Greenskies Solar Lifestyle
  • Heat Pumps
    • Air to air Heat Pump
    • Ground Source Heat Pump
  • Accessories
    • Flues
    • Greenstar System Filter
    • Keyless Filling Link
  • Commercial Heating
    • Bosch Industrial
Refocus on main menu
Refocus on main menu
  • View training
  • Training
  • Courses
  • Locations
  • Mobile Training
  • Apprenticeships
  • eAcademy
Refocus on main menu
Refocus on main menu
  • Spares
Refocus on main menu
Refocus on main menu
  • Specifiers
  • Specifiers
  • Worcester Quality
  • Heating Design Service
  • Case Studies
  • Corporate Social Responsibility
Refocus on main menu
Refocus on main menu
  • Support hub
  • Local Contacts
  • Literature
  • Register Guarantee
  • ErP Directive
  • Troubleshooting
  • Image Library
  • Send Enquiry
  • Boiler Plus
Refocus on main menu
Refocus on main menu
  • View more
  • News
  • Join our loyalty scheme
  • Promotions
  • Events & Exhibitions
  • Stoves
  • Worcester Bosch Professional App
Refocus on main menu
  1. Home
  2. Professional
  3. Support
  4. Troubleshooting
  5. FAQs
  6. Air to Water Heat Pump FAQs
  7. Question
Closeup photo of a boiler control panel with an error message displayed.

Frequently Asked Questions

Back to Air to Water Heat Pump FAQs

What refrigerant is used in Greensource air to water heat pumps?

Our Greensource air to water heat pumps use R407C.



Share this page on Twitter
Share this page on Facebook

More Air to Water Heat Pump FAQs

  • This is a test FAQ
  • What is the lower limit operating temperature of a Worcester air to water heat pump?
  • What are the key maintenance requirements for Greensource Air to Water Heat Pumps?
  • How should the air to water heat pump unit be sited to ensure the airflow and access it needs?
  • What size of cable should be used to connect the air to water heat pump to the mains electricity supply?
View all FAQ's

Footer

Still looking for something?

Products

  • Boilers
  • Controls
  • Cylinders
  • Solar
  • Heat Pumps
  • PSTI - Support Period
  • PSTI - Statement of Compliance

Support

  • Local Contacts
  • Guarantee
  • Literature
  • Enquiry Form
  • Image Library
  • Careers
  • Report security issues

Training

  • Courses
  • Locations
  • Mobile Training
  • Colleges

Keep in touch


  • Corporate Information
  • Modern Slavery Statement
  • Data Protection Notice
  • Privacy Settings
© Bosch Thermotechnology Ltd. 2025, all rights reserved.