Dehumidifier Corporation of America (DCA) provides top-notch indoor air quality and refrigerant-based dehumidification systems. If humidity is not controlled in commercial and industrial settings, it can lead to catastrophic results. Indoor pool rooms and facilities like printing, packaging, warehousing, and freshwater treatment plants require effective dehumidification, which involves maintaining proper room temperature. Add-on duct heaters are a common accessory to these dehumidification systems, preheating outdoor makeup air and limiting water evaporation into the indoor air.
At DCA, we offer a variety of add-on duct heaters, all of which come with a full range of customization options and are designed and manufactured in the United States. Learn more about our add-on duct heaters, how they work, and the applications best suited for each type.
In an indoor pool room, duct heaters can enhance the performance of a dehumidification system, providing the following benefits:
Any facility with an indoor hot tub, swimming pool or spa must use a dehumidification system to protect the structure from high humidity levels that can have damaging effects.
In the past, residential properties with dehumidification systems did not utilize heaters and relied solely on the pool to heat the space. This method proved inefficient as the pool could never attain the desired temperature to minimize evaporation.
The optimal air temperature in a pool room must be two to four degrees above the water temperature. However, since every pool room has unique characteristics, the demands for heating and dehumidification can change.
These factors may include:
Public buildings require outdoor makeup air, but when saturated with moisture, this air can corrupt the HVAC system of the commercial building. Having a dedicated outdoor air dehumidifier, equipped with a duct heater, provides a viable solution.
Since air temperature control and tempering outdoor makeup air are vital to many applications, DCA offers three distinct styles of add-on duct heaters designed to work with any of our models. We provide electric duct heaters, gas duct furnaces, and hot water coils. Each type of add-on duct heater has distinct advantages in achieving the desired room temperature.
DCA offers gas duct furnaces, strictly for Non-Residential or commercial applications. They are not tested or rated for residential use, so we instead recommend an internal hot water coil option that uses an external gas-fired hot water boiler for residential use.
All our commercial gas duct furnace models feature stainless steel heat exchangers to prolong the unit’s lifespan and are power vented to ensure adequate draw via the burner compartment. We carry an extensive line of units certified by the Electrical Testing Laboratories (ETL) for safety and operate on a standard 115 volt single-phase household current, ranging from inputs of 100,000 BTU to 400,000 BTU to meet the demands of any commercial application.
Key features of our gas fired duct furnaces:
Can be configured for indoor or outdoor use.
Requires regular maintenance to ensure efficient and safe operation.
Higher initial investment but more cost-effective and economical to operate.
DCA carries two main types of add-on gas duct furnaces: indoor separated combustion duct heaters (DFS models) and power exhausted duct heaters (HFP models) for outdoor air installation.
DFS models feature separated combustion and are designed for indoor commercial use only. They are typically located either directly mounted near or downstream from the dehumidifier. Separated combustion insures that combustion air is taken from the outdoors only and exhausts outdoors as well.
Key features of indoor gas duct furnaces:
Power vented duct heaters are outdoor gas duct furnaces that serve as the primary heating source for a commercial building. Certified for non-residential applications only, power vented furnaces are installed downstream from the dehumidifier and eliminates the risk of an erratic chimney.
Key features of outdoor gas duct furnaces:
As add-ons to dehumidification systems, electric duct heaters are a common way to add pool room heating. They are the top choice for residential applications. They can also provide supplemental heat in commercial, institutional, and industrial applications.
The key features of electric duct heaters include:
A heating element, mounted in a frame and inserted into a duct, can function using a variety of thermostats and building automation systems.
The open wire nichrome heating element is enclosed in a metal cabinet with safety limit switches designed to prevent overheating.
Galvanized Steel Construction for long service life and durability
Standard staged or modulating control are available to ensure proper amount of heat at any given time.
Compared to gas duct heaters, electric duct heaters are more cost-effective to purchase and install. They are designed for indoor or outdoor use and can be directly mounted to the dehumidifier, or downstream in the duct work of the dehumidifier.
Less cost-effective to operate and can cost substantially more compared to other heating solutions.
Available power includes 208/230 V single-phase and 208/230 V, 460 V, and 575 V three phase.
Best suited for residential, institutional, industrial, and commercial applications. It can efficiently temper incoming outdoor air regardless of the outdoor temperature.
Available in a wide range of sizes to suit various installation needs, electric duct heaters can be placed in either vertical or horizontal orientations.
Available in a broad range of sizes with standard heating capacities up to 110 kW, electric duct heaters are a versatile add-on duct heating solution. They operate on 208 V, 230 V, 460 V, or 575 V and are UL-listed for compliance and safety. DCA’s add-on electric duct heaters are suitable for use with various HVAC and dehumidifier systems. It is important to determine that sufficient power, in the breaker box, is available to power the electric heater.
Two types of installation options include:
Duct heaters play a vital role in the dehumidification process, and Dehumidifier Corporation of America offers top-quality add-on duct heaters for an array of industries and applications. Our complete duct system package can manage heat and humidity while controlling the room temperature.
Contact us to upgrade your heating system today!
We’ve only looked at three common problems here, but there are a host of other issues that can cause dehumidifier malfunctioning.
To read more about what can go wrong with dehumidifiers and learn how to fix problems quickly and efficiently, download our free dehumidifier troubleshooting guide today.Download our Free Troubleshooting Guide