Fernox - TF1 28mm Sigma HP Filter with Valves

Fernox TF1 Sigma HP Filter – 28mm with Valves

The Fernox TF1 Sigma HP Filter 28mm (with valves) is a high-performance, precision-engineered in-line system filter specifically designed for Air and Ground Source Heat Pump systems. Constructed from a high-strength, glass-reinforced engineering polymer, it offers excellent hydrolysis resistance and durability, making it ideal for renewable heating applications. The filter utilises unique Hydronic Particle Separation (HPS) technology and a powerful neodymium magnet to capture both magnetic and non-magnetic debris, protecting the heat pump and ensuring system efficiency. Suitable for installation in horizontal, vertical, or 45° pipework orientations, it is supplied with full-bore 28mm valves to ensure unrestricted flow.

Key Features

• Designed for Air and Ground Source Heat Pump systems
• High-strength, glass-reinforced engineering polymer construction
• Captures both magnetic and non-magnetic debris
• Hydronic Particle Separation (HPS) technology
• Full-bore 28mm valves included – no restriction to flow
• Fits horizontal, vertical, or 45° pipework orientations
• Easy, mess-free cleaning via drain valve
• Compatible with glycol and heating system additives (up to 50%)
• Max flow rate: 80 L/min (suitable for high-flow heat pump circuits)
• Max working pressure: 5 bar
• Max working temperature: 100°C
• 1-year manufacturer’s warranty (T&Cs apply)

Technical Specifications

Please note: Delivery times may vary depending on location, with specific details outlined below.

Standard Delivery

UK Mainland 

• Delivery Time: 2–4 working days
• Free Delivery on all orders

Express Delivery

UK Mainland

• Delivery Time: 1–3 working days
• Delivery fee of £15

Channel Islands

• Postcodes Covered: GY*, IM*, JE* 
• Minimum Order: £50
• Delivery Fee: £70

Northern Ireland, Offshore Territories & Scottish Islands 

• Postcodes Covered: BT*, HS*, KW, ZE
• Minimum Order: £50
• Delivery Fee: £35

Same Day Delivery 

• Eligible Postcodes:
  E*, EC*, N*, NW*, SE*, SW*, W*, WC*, HA*, UB*, EN*, IG*, RM*, KT*, SM*, CR*, BR*, DA*, TW*
• Minimum Order: £50
• Same Day Delivery Fee: £60
• Special Requests or Locations:
  For areas outside these postcodes or urgent quotes, please email orders@qualityheating.co.uk and we’ll do our best to accommodate.

Collections

Want to collect your order instead?You’re welcome to do so — just email us at orders@qualityheating.co.uk or message us via WhatsApp with your preferred collection time, and we’ll confirm the details.

Collection address: 284 Water Rd, Unit 9, London, HA0 1HX