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Hydronic coil

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The Unico System Hydronic coil Hot Water Coils

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The Unico System Small-duct HVAC Hydronic coil Repair, maintenance, and replacement planning
The Unico System Hot Water Coils product image

Technical Specifications

Product Specs

  • Brand: The Unico System
  • Manufacturer: Unico
  • Product family: Hot Water Coils
  • Equipment type: Hydronic coil
  • Product group: Small-duct HVAC
  • Official source category: Modular Coils
  • Representative official product: Hot Water Coil Module, M3642
  • Representative model/SKU: M3642 hot water coil module
  • Representative detail: Hot-water coil module for Unico modular indoor equipment
  • Official source: Unico Shop product page
  • Model or series: Hot Water Coils
  • System role: Indoor evaporator coil for a matched split HVAC system
  • Application: Residential or commercial hydronic heating applications when model capacity is appropriate
  • Compatibility check: Match with compatible outdoor equipment, controls, airflow, voltage, and capacity before service or replacement.
  • Verified source: shop.unicosystem.com

Useful troubleshooting details

  • Confirm the exact Hot Water Coils model number, serial number, capacity, voltage, refrigerant or fuel type, controls, and matched equipment.
  • Share current symptoms, alerts or error codes, recent maintenance, access notes, and whether the issue is urgent or planned.
  • For replacement planning, note comfort goals, existing equipment age, and any heat-pump, electrification, or rebate-related questions.

Service planning

How GreenFlow handles Hot Water Coils requests

1

Identify the equipment

Confirm the model or series name, serial number if available, photos, and whether the unit is roof, exterior, basement, or mechanical-room equipment.

2

Describe the service issue

Share no heat, no cooling, weak airflow, error codes, alarms, leaks, noise, control problems, or comfort complaints.

3

Review access and history

Include access notes, tenant or business-hour constraints, filter status, recent repairs, and maintenance records when available.

4

Plan the next step

GreenFlow can route the request for diagnostics, repair planning, maintenance, replacement scope, or related system upgrades.

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Our Happy Customers

Jenny W.

Great service! On time, knowledgeable & professional

Michael C.

always available, easy to get a hold of, as a property manager I get lots no heat emergency, usually get to it same day or next day

Sharad W.

Green Flow and the people who work there are terrific. Vlad and Andre are excellent. Andre was very helpful. He was punctual, respectful, efficient and knowledgeable. He did not try to sell me something I didn’t need ( as others have done before). I was charged $99 which...

Michele Z.

Andrey was professional, prompt, smart, thorough and exceedingly pleasant. We are likely switching our current HVAC company to Green Flow.

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