HVAC Pumps (Chilled, Hot & Condenser Water; Hydronic & Glycol Loops)
Quiet, efficient and easy to maintain—our HVAC packages center on inline ECM circulators and end-suction for distribution, multistage for booster/head, and split-case for big flows. We add glycol feeder skids for static pressure, digital metering for inhibitors/biocides and mag-drive for chemical transfer—plus self-priming and submersibles where maintenance access or drainage is key. Brands: Grundfos, Goulds, Griswold, Gorman-Rupp, BJM, J.L. Wingert, LMI, Walchem, Neptune, Emec, Flux, Finish Thompson, Iwaki.
Best-Fit Pumps for HVAC Loops
| HVAC Duty | Best Pump Type | Recommended Brands | Why It’s Best |
|---|---|---|---|
| Chilled/hot water distribution (small-medium) | Inline ECM circulator (∆P/∆T control) | Grundfos MAGNA/TPE | Quiet, efficient; auto-tunes to load; compact footprint |
| Large hydronic loops / condenser water | End-suction or split-case (VFD) | Grundfos NB/NK, Goulds, Griswold | High efficiency at duty; back-pull-out for fast service |
| RO make-up / high head building booster | Multistage centrifugal | Grundfos CR | Delivers high pressure in compact, serviceable package |
| Cooling tower basins / strain-prone sumps | Self-priming centrifugal (trash) / submersible | Gorman-Rupp; BJM | Above-grade clean-out or in-pit operation; solids-capable |
| Glycol static pressure maintenance | Packaged glycol feeder skid | J.L. Wingert | Maintains loop pressure; alarms and level control |
| Corrosion inhibitor/biocide dosing | Digital diaphragm metering | LMI PD/TD, Walchem, Neptune, Emec | Accurate ppm control; BMS/SCADA-friendly I/O |
| Chemical transfer (hypo, acids, cleaners) | Mag-drive sealless centrifugal | Finish Thompson DB/UC, Iwaki MX/MD | Leak-free chemical handling; strong compatibility range |
| Drum/IBC unloading (glycol/chemicals) | Drum/IBC pump | Flux F-Series | Ergonomic, safe unloading with appropriate tube sets |
Note: We size to BEP with VFD or ECM control, apply glycol correction factors and verify NPSH at minimum entering water temperatures.
Recommended HVAC Packages (Placeholders)
Tip Share loop type (CHW/HW/CW), design ∆T/∆P, % glycol, min/max temperatures, target GPM, critical control points and BMS signals. We’ll return curves and a complete BOM.
How We Engineer HVAC Systems
- Controls—ECM/ VFD for ∆P or ∆T; duty/standby auto-changeover for critical loops.
- Hydraulics—BEP selection with future capacity; NPSH verified at worst-case temperatures.
- Glycol—apply viscosity/density corrections; proper elastomers/seals; feeder skid integration.
- Serviceability—isolation spools, gauges, drains/vents and back-pull-out designs.
- Chemicals—digital dosing with back-pressure/relief, calibration columns and injection quills.
Common HVAC Uses
- Chilled and hot water distribution
- Condenser water and cooling towers
- Air handler and coil circulation
- Hydronic heating/cooling
- Snowmelt and glycol loops
- RO make-up and plate HX circuits
- Chemical transfer and dosing
- Equipment room drainage/sumps
- Booster and building pressure control
- Side-stream filtration feeds
Stable Setpoints. Lower kWh.
Send loop type, design ∆T/∆P, % glycol, temperature range, target GPM and BMS signals. We’ll size a quiet, efficient HVAC package with curves, controls and spares.
HVAC Pump FAQs
Inline ECM vs. end-suction—what’s right for my loop?
Inline ECM saves space and self-balances under ∆P control—great for small-medium loops. End-suction covers larger hydraulics and is easy to service with back-pull-out.
Do I need glycol correction factors when sizing?
Yes. % glycol and temperature change viscosity and density. We apply corrections, verify NPSH at the coldest condition and select seals/elastomers accordingly.
What keeps tower sumps and equipment rooms dry?
Self-priming trash pumps provide above-grade service access at towers; submersible dewatering pumps handle pits and rooms with solids-capable options.