Maxi-Therm
Heat Exchangers
ICA Heating is an authorized Maxi-Therm dealer serving New Jersey and New York. Vertical flooded steam-to-liquid heat exchangers with 0% flash condensate return — delivering 5–20% energy savings and up to 40% smaller footprints than conventional steam systems.
Vertical Flooded
Steam Technology
Founded in 2002, Maxi-Therm manufactures high-efficiency vertical flooded steam-to-liquid heat exchangers that fundamentally change how commercial buildings use steam. By using uncontrolled high-pressure steam within a vertical flooded u-tube design, Maxi-Therm systems extract both latent and sensible heat from every pound of steam — achieving 0% flash condensate return.
This eliminates the conventional equipment cascade — PRV stations, flash tanks, safety relief valves, roof vents, condensate pumps, and vacuum breakers — cutting maintenance budgets by more than 75% and mechanical room footprints by up to 40%. Energy savings of 5–20% are typical because every BTU in the steam is captured before condensate returns to the boiler plant.
The product line spans building heat (MCU series), domestic hot water (VFFF series), and clean steam generation (CSU series) — covering virtually every steam-to-liquid and steam-to-steam application in commercial and institutional facilities.
A single vertical flooded u-tube heat exchanger on a structural skid — complete with condensate control valve, safety shut-off valve, start-up valve, and control panel. The condensate control valve is only 1/2-inch up to 10 MMBTU capacity, dramatically reducing valve cost and maintenance.
- Type: Vertical flooded u-tube, single unit
- Capacity: Up to 10 MMBTU
- Condensate: 0% flash return — subcooled below 200°F
- Controls: BACnet, LON, or Modbus communication
Two or three heat exchangers installed in parallel on a single structural base — each with its own condensate control valve, safety shut-off, start-up valve, and individual control panel. Provides capacity staging and built-in redundancy for critical facilities.
- Config: 2 or 3 exchangers in parallel on one base
- Redundancy: Each HX has independent controls
- Condensate: 0% flash return — subcooled below 200°F
- Application: Large facilities requiring staged capacity
Combines a building heat exchanger with a plate-and-frame heat exchanger for domestic hot water, snow melt, pool heating, or other hot liquid processes — all from a single steam source. One condensate outlet serves all connected exchangers.
- Config: Building heat HX + plate-and-frame HX
- Output: Space heating + DHW/snow melt/pool
- Condensate: Single outlet for all exchangers
- Source: One steam connection serves multiple loads
A complete redundant mechanical room on a single skid — two heat exchangers (series or parallel), condensate control valves, safety shut-offs, two circulating pumps with VFDs, two control panels, and a main power disconnect. Single-point connections for controls and power make this a true turn-key solution.
- Config: 2 HX + 2 pumps + 2 VFDs + 2 panels on one skid
- Redundancy: Fully redundant — true turn-key
- Connections: Single-point for controls and electric power
- Application: Critical facilities requiring 100% uptime
Two redundant heat exchangers at 100% of required capacity installed in series — both always fully or partially active. No lead-lag sequencing, no switchover delays. When one unit requires service, the other seamlessly handles the full load without interruption.
- Config: 2 HX at 100% capacity in series
- Operation: Both active — no lead-lag sequencing
- Failover: Seamless — zero switchover delay
- Application: Hospitals, data centers, critical process
The most popular and affordable Maxi-Therm steam water heater — a vertical double-wall flooded heat exchanger with a three-way non-electric blending valve. Goes from zero to max capacity on demand with ±4°F temperature control. No dedicated condensate pump required.
- Type: Vertical flooded with non-electric blending valve
- Flow Range: 10 – 200 USGPM
- Accuracy: ±4°F temperature differential
- Steam: 5 – 40 psig operating pressure
- Pump: No dedicated condensate pump required
The electronic version of the VFFF — digital feed-forward control provides even more precise temperature regulation for applications demanding tighter tolerances. Ideal for hospitals, laboratories, and critical process applications where temperature stability is paramount.
- Type: Vertical flooded with electronic feed-forward control
- Control: Digital — precise temperature regulation
- Application: Hospitals, labs, critical process control
- Construction: Full stainless steel or carbon/Cu-Ni options
A shell-and-tube steam-to-steam heat exchanger that uses higher-pressure boiler steam to generate lower-pressure clean steam with greater than 97% dryness and zero carryover. Eliminates PRV stations and dedicated condensate pumps. Ideal for humidification, sterilization, and food processing steam injection.
- Type: Shell-and-tube steam-to-steam
- Steam Quality: >97% dryness, zero carryover
- Capacity: Up to 8,000 lbs/hr humidification load
- Material: 304 stainless steel (316L available)
- Controls: Touchscreen with BACnet or Modbus
Why Vertical Flooded
Outperforms Conventional
Maxi-Therm's vertical flooded design delivers measurable advantages over conventional shell-and-tube, plate-and-frame, and PRV-based steam systems.
Built for Every
Steam-Fed Facility
Maxi-Therm heat exchangers serve any facility with a steam plant — from hospitals requiring clean steam to universities converting campus steam distribution.
Authorized Dealer.
Full-Service Partner.
Buying a Maxi-Therm heat exchanger through ICA means you get more than equipment — you get an authorized partner who understands steam systems and stays with the installation for its entire lifecycle. From the first engineering meeting through decades of service, ICA provides the expertise that Maxi-Therm equipment deserves.
ICA's engineers have deep experience with steam-to-liquid conversion projects — including load analysis, condensate system design, control valve sizing, and BAS integration. We handle everything from specification through startup and commissioning.
Common Questions About
Maxi-Therm Heat Exchangers
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