Keep Your HVAC Coils and Components and Your Air Disinfected Year-Round
Preventing contamination and providing clean and clear air is essential for a number of industries. All building managers and owners need to be cognizant of microorganisms spreading throughout their facilities. Mold and biofilm growing in HVAC systems pose a dangerous contamination risk for food service companies. Pharmaceutical companies need to adhere to high standards for clean air.
American Ultraviolet provides the highest-quality, in-house-manufactured UV systems to keep HVAC systems clean, safe, efficient, and long-lasting. As an HVAC disinfection solution, each fixture continuously treats the cooling coil and drain pan rather than relying on chemical cleaning programs to keep the system running efficiently. These germicidal UV fixtures form a complete UV disinfection system for the HVAC unit, improving indoor air quality while reducing labor and chemical costs associated with manual coil cleaning. Below is a closer look at each series and what sets it apart.
CK Series — Air Handling Kit
The CK Series is a modular, highly flexible kit built for retrofit and OEM Air Handling Unit (AHU) installations. A single control enclosure can drive up to 16 lamps across lengths ranging from 18" to 60", with a multi-voltage, multi-frequency power supply (110–277V, 50/60Hz) for worldwide use. Lamp changes are tool-free — the mounting hardware uses snap-in clips that securely hold lamps to rigid conduit, so they can be installed or replaced without tools, keeping routine maintenance fast and preventing technicians from having to carry a separate toolkit just to swap a lamp.
The CK Series also supports multi-lamp configurations at a scale that none of the other series match: multiple lamps of various lengths can run from a single power enclosure. An optional BMS integration module adds remote lamp monitoring through your building management system, and the ballast carries a ten-year non-prorated warranty.
Reflectors
Highly polished for maximum UVC reflectance, CK series reflectors are designed to increase UVC energy delivered to the coil and drain pan in upstream installations
Mounting Clips
Snap-in stainless steel clips on one side allow tool-free lamp installation and replacement while securely holding lamps. The other side of the clip is made to clamp around standard electrical conduit
UVC Lamps
High Output lamps are offered in 3 varieties for the CK series: standard, "shatterproof" coated, and double walled. All utilize a watertight connection to the incoming lamp power cable and are rated for 2 years of effective lamp life. Standard sizes from 18" to 60"
CC Series — Coil Clean
The CC Series is American Ultraviolet's high-output workhorse, built for internal installation in medium- to large-sized air-handling systems across commercial, industrial, healthcare, and institutional buildings. Designed for continuous duty, fixtures come in single- and double-lamp configurations across five lengths (18", 24", 36", 48", 60") and four voltage options (115, 208, 230, 277 VAC), and can be mounted individually, in built-up banks, or as parallel rack systems across coils, drain pans, ductwork, and plenums.
Each UV-C lamp carries a two-year guarantee with only a 20% output decrease over that period, and the ballast is backed by a ten-year non-prorated warranty. Plug-in connections mean no field wiring is required to connect fixtures to fixtures when building rack systems.
Eco Pure Series- Economical On-Coil Option
The Eco Pure Series is American Ultraviolet's economical on-coil option, suited to smaller commercial systems where a lower-cost solution makes sense.
It uses standard-output lamps in lengths from 16" to 60", backed by a one-year lamp warranty and a ten-year non-prorated ballast warranty.
DC/NC Series — Outdoor/Rooftop On-Coil Fixtures
American Ultraviolet High-output DC Series HVAC UVC germicidal fixtures can be mounted in various configurations for optimum pass-by air decontamination and/or to irradiate cooling coils and drain pans. Lamps and electronics can be accessed from outside the duct or plenum. "Green" low-pressure lamps extend inside to span supply ducts and/or cooling coils.
The NC Series is purpose-built for outdoor HVAC units, housed in a weather-resistant NEMA 4X enclosure engineered for rooftop and other exterior-mounted AC systems. Lamp replacement is performed through the NEMA 4X electrical enclosure without having to remove the whole fixture.
DC/NC fixtures are available in 1, 2, 3, 4 lamp configurations across five lengths (14", 16", 24", 33", 45") and all fixtures are multi-voltage 50/60 HZ, and can be mounted vertically or horizontally. Independent testing shows NC lamps deliver greater output than other ultraviolet devices under standard HVAC operating conditions, with a two-year lamp guarantee and a ten-year non-prorated ballast warranty.
PEK/GTLK Series- Packed Equipment Kit
The PEK/GTLK Series is designed for fan coils, Packaged Terminal Air Conditioners (PTACs), classroom unit ventilators, and other room-unit systems with tight spaces. Each kit is a single UV-C lamp system. Multiple kits are combined to fully irradiate a larger coil. These are available in lengths of 18”, 24", 36", 48", and 60". Like the CK Series, PEK/GTLK uses a quick, snap-in lamp installation that requires no tools, making lamp replacement straightforward even in the cramped quarters typical of PTAC and fan coil installations.
Lamps are high-output (800mA) with the same two-year, 17,000-hour guarantee as CK and CC, and the ballast carries a ten-year non-prorated warranty. The GTLK option swaps a shatterproof FEP coating for the standard quartz sleeve, using the same ballasts and lengths as PEK.
Why American Ultraviolet Commercial HVAC On-Coil Fixtures are Unique
While the CK, CC, DC, NC, Eco Pure, and PEK/GTLK series cover most commercial HVAC applications, not every coil, AHU, or rooftop fleet fits a standard configuration. American Ultraviolet's in-house engineering, fabrication, assembly, and testing teams design and build fully custom UV disinfection systems for facilities that need something a catalog fixture can't deliver.
That custom capability works both ways. It can mean retrofitting germicidal UV fixtures into an HVAC system that's already in place, or specifying a complete, integrated solution as part of a new build from the ground up. American Ultraviolet's engineers work directly with facility managers, mechanical contractors, and OEMs to design a system around the actual application and its indoor air quality requirements.
This is the same engineering and manufacturing capability behind every series on this page. All American Ultraviolet fixtures are designed, fabricated, and tested in-house in the USA, backed by more than 65 years of UV-C manufacturing experience dating back to 1960. For facilities with requirements outside the standard CK, CC, DC, NC, Eco Pure, and PEK/GTLK series configurations, American Ultraviolet's custom integrated solutions team can be reached directly to design a system tailored to the application.
UV On-Coil Fixtures for HVAC Systems FAQ
What are the most effective UV disinfection solutions for Air Handling Systems?
UV-C germicidal fixtures mounted directly on HVAC cooling coils and drain pans are among the most effective options for any HVAC system. On-coil systems like the American Ultraviolet CK, CC, DC, NC, Eco Pure, and PEK/GTLK series run 24/7, continuously destroying bacteria, viruses, mold, and fungi at the source, all before contaminated air ever enters the occupied space. Unlike periodic chemical cleaning, UV treatment works around the clock without interrupting facility operations or introducing secondary contaminants.
Which companies offer UV-C germicidal systems for the pharmaceutical industry?
UV-C germicidal systems for pharmaceutical environments typically come from manufacturers specializing in both air and water treatment, since pharmaceutical facilities must control airborne contamination in cleanrooms and production areas while also managing water purification for manufacturing processes.
The most effective systems combine on-coil or in-duct HVAC fixtures for air-handling units with dedicated UV water-treatment lines, since pharmaceutical operations typically require both to be addressed under the same regulatory standards. American Ultraviolet offers both on-coil HVAC fixtures that maintain clean air-handling units without relying on chemical disinfectants.
Which companies manufacture high-output UV-C germicidal systems for reducing bacteria, viruses, and mold?
High-output UV-C systems for reducing bacteria, viruses, and mold are generally built around lamps rated at 800mA or higher, since that output level allows a fixture to maintain optimal UV-C output in a cold air-stream environment. Manufacturers in this category typically offer a range of fixture types — on-coil, in-duct, and outdoor-rated — so the right lamp configuration can be matched to the specific HVAC system.
American Ultraviolet's CK, CC, DC, NC, and PEK/GTLK series all use high-output (800mA) lamps engineered for this purpose, each suited to a different installation type, from internal AHU coils to outdoor rooftop units to space-constrained PTAC systems.
What are the best UV-C germicidal fixtures for improving indoor air quality in public and commercial buildings?
High-output on-coil UV-C fixtures are widely used in public and commercial buildings to improve indoor air quality at the HVAC system level. American Ultraviolet's CK Series and CC Series mount inside air handling units to irradiate cooling coils and drain pans — the areas most prone to mold and biofilm growth.
By eliminating biological buildup at the coil, these systems prevent contaminated air from recirculating through occupied spaces, which is especially critical in high-traffic public and commercial environments.
Which commercial industries need HVAC on-coil fixtures?
Food service and pharmaceutical facilities rely most heavily on UV-C, where clean air, contamination risk, and regulatory air quality standards are critical. UV-C fixtures are also widely used in schools, hospitality properties, multifamily and office buildings, and government facilities — any commercial space where indoor air quality, coil efficiency, or maintenance costs matter to building operations.
American Ultraviolet serves each of these industries with a series tailored to its specific demands, from the CK Series for large institutional air-handling systems to the PEK/GTLK Series for tight PTAC installations in hotels and classrooms. Every fixture is engineered, manufactured, and tested in-house in the USA, backed by more than 60 years of UV-C experience since 1960.
Prolonged, direct exposure to UVC light can cause temporary skin redness and eye irritation. American Ultraviolet systems are designed with safety in mind and, when properly installed by a professional contractor, do not allow exposure to UV irradiation and allow for safe operation and maintenance.
None of the American Ultraviolet UVC products detailed above are certified, or approved under any applicable laws, as a medical device, and as such, American Ultraviolet, and its Representatives and Distributors, do not currently intend for them to be used as medical devices anywhere globally. Products have not been evaluated by the FDA.