WaterBoost Package Heating Systems
WaterBoost Package Heating Systems are complete pressurisation sets for sealed heating and chilled water systems. Each kit pairs the Mikrofill 3 PRO pumpless pressurisation unit with a GWS HeatWave expansion vessel and a lockable service valve, sized from 8 litres up to twin 300 litre vessels.
The 3 PRO connects straight to the mains, fills the system from empty at up to 12 l/min and tops it up automatically, with WRAS-approved Category 4 backflow protection built in. The vessel absorbs the expansion as the water heats, and the service valve lets it be isolated and drained for checks.
| Vessel | Heat pump up to | Boiler up to | Service valve |
|---|---|---|---|
| HWB-8LX | 250 L | 140 L | ¾" |
| HWB-12LX | 380 L | 210 L | ¾" |
| HWB-18LX | 570 L | 320 L | ¾" |
| HWB-24LX | 770 L | 430 L | ¾" |
| HWB-35LX | 950 L | 530 L | ¾" |
| HWB-60LV | 1,150 L | 640 L | ¾" |
| HWB-80LV | 1,540 L | 860 L | ¾" |
| HWB-100LV | 1,930 L | 1,070 L | 1" |
| HWB-130LV | 2,510 L | 1,400 L | 1" |
| HWB-150LV | 2,890 L | 1,610 L | 1" |
| HWB-INT-200LV | 3,860 L | 2,150 L | 1¼" |
| HWB-INT-300LV | 5,790 L | 3,230 L | 1¼" |
| HWB-INT-500LV | 9,660 L | 5,390 L | 1¼" |
| 2 × HWB-INT-200LV | 7,720 L | 4,310 L | 1¼" |
| 2 × HWB-INT-300LV | 11,590 L | 6,470 L | 1¼" |
Heat pump figures are at 60 °C flow and boiler figures at 82 °C, with a 3 bar safety valve and the vessel's factory pre-charge. Maximum system water temperature is 85 °C. For closed-loop systems only. 2-year warranty on the Mikrofill unit.
15 products
Mikrofill 3 PRO pressurisation unit + GWS HeatWave HWB-8LX expansion vessel + ¾” service valve, for heat pump systems up to 250 litres. A complete…
Mikrofill 3 PRO pressurisation unit + GWS HeatWave HWB-12LX expansion vessel + ¾” service valve, for heat pump systems up to 380 litres. A complete…
Mikrofill 3 PRO pressurisation unit + GWS HeatWave HWB-18LX expansion vessel + ¾” service valve, for heat pump systems up to 570 litres. A complete…
Mikrofill 3 PRO pressurisation unit + GWS HeatWave HWB-24LX expansion vessel + ¾” service valve, for heat pump systems up to 770 litres. A complete…
Mikrofill 3 PRO pressurisation unit + GWS HeatWave HWB-35LX expansion vessel + ¾” service valve, for heat pump systems up to 950 litres. A complete…
Mikrofill 3 PRO pressurisation unit + GWS HeatWave HWB-60LV expansion vessel + ¾” service valve, for heat pump systems up to 1,150 litres. A complete…
Mikrofill 3 PRO pressurisation unit + GWS HeatWave HWB-80LV expansion vessel + ¾” service valve, for heat pump systems up to 1,540 litres. A complete…
Mikrofill 3 PRO pressurisation unit + GWS HeatWave HWB-100LV expansion vessel + 1″ service valve, for heat pump systems up to 1,930 litres. A complete…
Mikrofill 3 PRO pressurisation unit + GWS HeatWave HWB-130LV expansion vessel + 1″ service valve, for heat pump systems up to 2,510 litres. A complete…
Mikrofill 3 PRO pressurisation unit + GWS HeatWave HWB-150LV expansion vessel + 1″ service valve, for heat pump systems up to 2,890 litres. A complete…
Mikrofill 3 PRO pressurisation unit + GWS HeatWave HWB-INT-200LV expansion vessel + 1¼” service valve, for heat pump systems up to 3,860 litres. A complete…
Mikrofill 3 PRO pressurisation unit + GWS HeatWave HWB-INT-300LV expansion vessel + 1¼” service valve, for heat pump systems up to 5,790 litres. A complete…
Mikrofill 3 PRO pressurisation unit + GWS HeatWave HWB-INT-500LV expansion vessel + 1¼” service valve, for heat pump systems up to 9,660 litres. A complete…
Mikrofill 3 PRO pressurisation unit + 2 × GWS HeatWave HWB-INT-200LV expansion vessels + 1¼” service valve, for heat pump systems up to 7,720 litres.…
Mikrofill 3 PRO pressurisation unit + 2 × GWS HeatWave HWB-INT-300LV expansion vessels + 1¼” service valve, for heat pump systems up to 11,590 litres.…