--- title: HVAC Cleaning Photo Gallery | Before and After | Service-Tech description: Providing acceptable indoor air quality is our passion and goal for each facility. Check out our past HVAC and industrial cleaning projects here! --- [![STC logo](https://www.service-techcorp.com/hs-fs/hubfs/raw_assets/public/STC_May_2020/images/ST-logo-2019.png?width=400&name=ST-logo-2019.png)](https://www.service-techcorp.com/?hsLang=en) 800.992.9302 [![Request an Estimate](https://no-cache.hubspot.com/cta/default/7699874/abcd49d5-270b-4e83-949a-b07bd2a010d5.png)](https://cta-redirect.hubspot.com/cta/redirect/7699874/abcd49d5-270b-4e83-949a-b07bd2a010d5) - [Home](https://www.service-techcorp.com) - Services - [Air Duct & HVAC Cleaning](https://www.service-techcorp.com/commercial-hvac-air-duct-cleaning) - [Cooling Tower Cleaning](https://www.service-techcorp.com/services/cooling-tower-cleaning/) - [Industrial & Facilities Cleaning](https://www.service-techcorp.com/services/industrial-air-duct-cleaning/) - [Kitchen Exhaust Hood Cleaning](https://www.service-techcorp.com/services/kitchen-exhaust-hood-cleaning/) - [Rope Access](https://www.service-techcorp.com/services/rope-access-services/) - [Dry Ice Blasting](https://www.service-techcorp.com/services/dry-ice-blasting/) - [Food Plant Sanitation](https://www.service-techcorp.com/services/food-plant-sanitation/) - Locations - [All Locations](https://www.service-techcorp.com/all-locations) - [Cleveland](https://www.service-techcorp.com/air-duct-cleaning-cleveland-ohio) - [Columbus](https://www.service-techcorp.com/air-duct-cleaning-columbus-ohio) - [Dayton](https://www.service-techcorp.com/air-duct-cleaning-dayton-ohio) - [Tampa](https://www.service-techcorp.com/air-duct-cleaning-tampa-florida) - [Tallahassee](https://www.service-techcorp.com/air-duct-cleaning-tallahassee-florida) - [Pine Bluff](https://www.service-techcorp.com/air-duct-cleaning-pine-bluff-ak) - Company - [About Us](https://www.service-techcorp.com/about-us) - [Why STC?](https://www.service-techcorp.com/why-stc) - [STC Leaders](https://www.service-techcorp.com/stc-leaders) - [Industries and Facilities Served](https://www.service-techcorp.com/industries-facilities-served) - [Certifications](https://www.service-techcorp.com/certifications) - [Indoor Air Quality](https://www.service-techcorp.com/indoor-air-quality) - [Guaranteed Techniques in Air Duct Cleaning](https://www.service-techcorp.com/guaranteed-techniques) - [Careers](https://www.service-techcorp.com/careers) - Resources - [Industry Advice](https://www.service-techcorp.com/blog) - [FAQ’s](https://www.service-techcorp.com/faqs) - [Photo Gallery](https://www.service-techcorp.com/photo-gallery) # Photo Gallery ## Our Services - [Air Duct/Complete HVAC System Cleaning](https://www.service-techcorp.com/services/hvac-system-cleaning) - [Cooling Tower Cleaning and Maintenance](https://www.service-techcorp.com/services/cooling-tower-cleaning-maintenance) - [Industrial & Facilities Cleaning Services](https://www.service-techcorp.com/services/industrial-facilities-cleaning-services) - [Industrial Painting & Overhead Cleaning ](https://www.service-techcorp.com/services/overhead-cleaning-painting) - [Combustible Dust Removal](https://www.service-techcorp.com/services/combustible-dust-removal) - [Kitchen Exhaust Hood Cleaning](https://www.service-techcorp.com/services/kitchen-exhaust-hood-equipment-cleaning) - [Aeroseal Air Duct Leakage Repair](https://www.service-techcorp.com/services/air-duct-leakage-repair) - [Residential Air Duct Cleaning](https://www.service-techcorp.com/services/residential-air-duct-cleaning) - [Fire Damper Inspections](https://www.service-techcorp.com/services/fire-damper-inspections) - [Complete List of Services](https://www.service-techcorp.com/services) ---   ## Additional Info - [Industries and Facilities Served](https://www.service-techcorp.com/industries-facilities-served) - [Indoor Air Quality](https://www.service-techcorp.com/indoor-air-quality) - [Guaranteed Techniques in Air Duct Cleaning](https://www.service-techcorp.com/guaranteed-techniques) - [Photo Gallery](https://www.service-techcorp.com/photo-gallery) Properly maintaining HVAC systems is essential in order to to sustain acceptable Indoor Air Quality. Dirty HVAC systems harbor bacteria, fungi, mold, pollen, dust mites and other disease-carrying biological pollutants which are re-circulated through forced-air systems. Given the right conditions of temperature and moisture, these contaminants can flourish in ductwork and flow out into the work-space. As you can see in the before and after cleaning photos, various components throughout an HVAC system get soiled over time. Dirt typically originates at the air handler via the return ductwork and collects in the ducts, on the fan blades, coils, plenum areas and grilles. Service-Tech specializes in environmentally friendly, advanced techniques in [HVAC system cleaning](http://service-techcorp.com/services/hvac-system-cleaning/?hsLang=en) with contact vacuuming and source removal in air purification processes. This includes the use of High Efficiency (HEPA) vacuums and manual entry to access areas difficult to reach for a proper and thorough cleaning of the ductwork and all components. --- ![Supply Airduct](https://cdn2.hubspot.net/hubfs/7699874/STC_May_2020/Images/photo1_2.gif)   ![Supply Air Ductwork](https://cdn2.hubspot.net/hubfs/7699874/STC_May_2020/Images/photo2_4.gif) **Air duct cleaning: Supply air ductwork before and after mechanical cleaning** --- ![Evaporator Coils](https://cdn2.hubspot.net/hubfs/7699874/STC_May_2020/Images/photo5.gif) **Coil cleaning: Dirty evaporator coils impair cooling supply ** ![Professional Cleaning of Coils](https://cdn2.hubspot.net/hubfs/7699874/STC_May_2020/Images/photo6.gif) **Professional coil cleaning improves equipment efficiency and Indoor Air Quality (IAQ)** --- ![AHU cleaning](https://cdn2.hubspot.net/hubfs/7699874/STC_May_2020/Images/before_after-ahu-v8.png) **AHU cleaning: After cleaning, this air handling unit consumed 35% less electricity.** --- ![Fungicidal protective Coating](https://cdn2.hubspot.net/hubfs/7699874/STC_May_2020/Images/photo7_8.gif) ![Fungicidal Protective Coating](https://cdn2.hubspot.net/hubfs/7699874/STC_May_2020/Images/photo9_10.gif) **Resurfacing of thermal acoustic fiber glass with fungicidal protective coating** --- ![Fungicidal Protective Coating](https://cdn2.hubspot.net/hubfs/7699874/STC_May_2020/Images/grease-on-roof_pk.jpg) **Roof cleaning: Power washing utilizing a non-toxic, biodegradable cleaning formula effectively removes dirt and grease.** Nationwide Corporate HQ Cleveland, OH 800.992.9302 info@service-techcorp.com Service-Tech is a Member Of [![Nadac](https://www.service-techcorp.com/hubfs/raw_assets/public/STC_May_2020/images/logo.png) ](https://nadca.com/en/membership-verification?078065068067065+108111103111+108111103111046112110103&G3Pwyt5fju8Kw1KIMRZSk5foMPft4yaqv3Op9rCJ8rtkZQMQl3QH45YsctXlp4G%2bvFlp38bRmNA%3d) [![ikeca](https://www.service-techcorp.com/hubfs/raw_assets/public/STC_May_2020/images/ikeca.jpg) ](http://www.ikeca.org/certification) [![IAQ](https://www.service-techcorp.com/hubfs/raw_assets/public/STC_May_2020/images/IAQ.jpg) ](http://www.iaqa.org/) [![gsa](https://www.service-techcorp.com/hubfs/raw_assets/public/STC_May_2020/images/gsa.jpg) ](https://www.gsa.gov/) **CONTRACT #GS-21F-0032U** - [Facebook ](https://www.facebook.com/servicetechcorp/) - [LinkedIn ](https://www.linkedin.com/company/service-tech-corporation/) - [Twitter ](https://www.twitter.com/ServiceTechOH) ©2026 Service-Tech Corporation. 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