High-efficiency hydronic circulating pumps — the heart that moves heated and chilled water through your system. AHHAC supplies Grundfos and Wiseliving circulating pumps.
The circulating pump moves water from the boiler or heat pump through every radiator, underfloor loop and fan coil in the system. Modern high-efficiency ECM (electronically commutated motor) pumps modulate their speed to demand, using up to 80% less electricity than the old fixed-speed pumps — a meaningful saving on a component that may run thousands of hours a year.
AHHAC supplies and installs Grundfos pumps — the global benchmark for hydronic circulators — alongside the Wiseliving pump range. We size every pump to the system's flow rate and head loss, because an oversized pump wastes energy and creates noise, while an undersized one starves distant loops.
Get the pump right and the system is silent, balanced and cheap to run. Modern ECM pumps (Grundfos Alpha, Magna series) self-regulate to maintain constant pressure or proportional pressure as zone valves open and close — no manual balancing drift over time. AHHAC commissions every pump to the correct curve and head, and we stock common Grundfos replacements for fast service.
"AHHAC delivered our 22-zone underfloor system on time, on budget and to spec. The crew were tidy, the documentation was thorough, and the commissioning was textbook."
"We've worked with AHHAC for 17 years. They've installed and serviced our hot water plant across three commercial buildings — and they pick up the phone on weekends."
"Three mobs quoted us; AHHAC's design was the only one based on a proper heat-loss calculation. The system runs beautifully — the others would've been oversized and expensive."