The compact H4 Non-Thermostatic 4-Port Pump Set is designed for use with air source heat pump (ASHP) systems with a maximum output of up to 20kW. It provides reliable circulation and efficient flow distribution, making it suitable for underfloor heating or radiator systems.
This unit is ideal where thermostatic control is managed elsewhere in the system. Featuring a modular layout with a high-efficiency pump, integrated check valves, and a clear temperature gauge, this pack ensures simple installation and long-term dependability.
- 'A' rated Grundfos UPM3 Auto pump – Ensures quiet and energy-efficient operation
- In-built 4-way deflector plate – Promotes consistent flow and system efficiency
- Integrated check valves – Designed for easy filling and maintenance
- Temperature gauge – For precise system temperature monitoring
- Fully reversible design – Compatible with left or right-sided manifold configurations
- Side or bottom entry connections – Offers flexible installation options
- Assembled in the UK – Pre-tested, packaged, and ready for quick installation
- 2-year warranty – Ensures peace of mind and system reliability
A dependable solution for ASHP setups, helping maintain efficient heating performance throughout your system.
Our May Bank Holiday Delivery Times
| Order Date | Order Time | Expected Delivery Date |
|---|---|---|
| Fri 23rd May* | Before 4:00pm | Tues 27th May |
| Fri 23rd May | After 4:00pm | Wed 28th May |
| Sat 24th May | All day | Wed 28th May |
| Sun 25th May | All day | Wed 28th May |
| Mon 26th May | All day | Wed 28th May |
| *Any pallets to be delivered on Saturday 24th May will need to be ordered before 2:30pm on Friday 23rd May. | ||
Free Delivery as Standard!
As standard we include 2 - 3 working day delivery on all orders delivered to the UK mainland. * A £5 delivery charge will be applied to all orders below £20.
Delivery cut off times
Our final delivery time for Mondays to Thursday is 4:30pm. To give us a bit more time to ensure weekend deliveries are handled and our couriers have time to collect, the final delivery time on Fridays is 4:00pm.
2-3 working day delivery
Next working day
Next working day before 10:30
Saturday Delivery
* A £5 delivery charge will be applied to all orders below £20.
Other Delivery Options
Pre 10:30am and Saturday delivery services are available on orders placed before 4:30pm. Any order placed before 4:30pm on a Friday will be delivered on the following Monday (unless its a bank holiday) so please select a Saturday service if a weekend delivery is required.
Delivery outside the UK
Delivery outside the mainland UK may be arranged by prior agreement. You will be notified of the amount of the charge for this service and will at that point have to make a decision whether you wish to proceed wth your order.
Important: Our deliveries rely on third party couriers, so, whilst we make every effort to deliver your order on the specified date and time, unfortunately there may be occasions when this will not be possible due to external influences. Due to this we strongly recommend you ensure you have received your order before any tradespeople/builders are scheduled to commence work.
Still Unsure? Talk to an expert
If you need any guidance or further information our highly experienced team are on hand to help.
Get in touch using our contact form or give us a call on 0800 023 4203 or 01268 744 479.
