Frequently Asked Questions

A fan coil unit (FCU) is a device that uses a fan and a heating/cooling coil to condition air in a space. It connects to a central chilled water or hot water system and provides individual zone control for heating and cooling.

HH (High-Performance Horizontal) series is designed for high-static pressure applications requiring 600-2,000 CFM. LH (Low-Static Horizontal) series is for standard applications with 200-1,200 CFM capacity and lower static pressure requirements.

Yes, Williams fan coils are AHRI certified, ensuring independently verified performance ratings that meet industry standards for heating and cooling capacity.

All Williams products are manufactured in Colton, California at our 400,000 sq ft facility in San Bernardino County. We have been manufacturing HVAC products in the USA for decades.

Williams fan coils are used in hotels, multi-family residential buildings, condominiums, office buildings, universities, healthcare facilities, senior living, and mixed-use developments.

Williams offers fan coils from 200 CFM to 2,200 CFM depending on the series. LH series: 200-1,200 CFM. HH series: 600-2,000 CFM. CV series: 400-2,200 CFM.

Williams offers 2-pipe, 4-pipe, and DX (direct expansion) coil configurations. Coils are available in various row depths and fin spacing to meet specific heating/cooling requirements.

Yes, energy-efficient ECM (Electronically Commutated Motor) options are available across our product lines. ECM motors provide variable speed operation, quieter performance, and reduced energy consumption.

Standard voltages include 120V, 208V, 240V, and 277V single-phase. Three-phase options are available for larger units. Consult product specifications for model-specific availability.

Yes, Williams fan coils are NSF-61 certified for potable water systems, enabling innovative integrated piping solutions like our ComforTRAC system.

Installation, Operation, and Maintenance (IOM) manuals are available in our Technical Documents section. You can also contact your local Williams representative or our engineering team for specific documentation.

Clearance requirements vary by model and configuration. Refer to the specific product IOM manual for detailed clearance specifications. Generally, allow adequate access for service and filter changes.

Yes, Williams fan coils are designed to work with standard hydronic systems. They can connect to any chilled water or hot water source that meets the specified flow rates and temperatures.

IPS combines our TRACvalve technology with ComforTRAC piping to reduce construction costs by up to $6/sq ft. It uses a two-pipe system that provides both heating and cooling from a single set of pipes.

Contact your local Williams representative or use our contact form to request a quote. Provide project details including building type, number of units, and CFM requirements for accurate pricing.

Williams offers comprehensive warranty coverage on all products. Specific warranty terms vary by product line. Contact customer service or refer to your product documentation for detailed warranty information.

Visit our Where to Buy page to find a Williams representative in your area. Representatives provide technical support, product selection assistance, and local expertise.

Contact Williams customer service at (888) 444-1212 or email questions@wfc-fc.com with your model and serial number. You can also work with your local Williams representative for parts orders.