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Proudly Serving Greensburg, PA and surrounding areas

(724) 261-3634

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Advanced Filtration Systems We Install

We offer a comprehensive range of air filtration solutions designed to capture and eliminate airborne particles. Standard one-inch filters found in most homes only capture about 20% of airborne particles. In contrast, our high-efficiency filtration systems can capture up to 99.97% of particles as small as 0.3 microns. These advanced filters trap everything from dust and pollen to bacteria and virus-carrying particles.

HEPA filtration represents the gold standard in air purification technology. We install whole-house HEPA systems that integrate seamlessly with your existing HVAC equipment. These systems feature multiple filtration stages, including pre-filters for larger particles and activated carbon filters for odors and chemical vapors. For customers in Greensburg, PA and surrounding areas dealing with seasonal allergies, these systems provide year-round relief by continuously filtering all the air circulating through your home.

UV Light Technology and Air Purification

Ultraviolet germicidal irradiation technology has revolutionized how we approach biological contaminants in HVAC systems. We install UV-C light systems directly in your ductwork or air handler, where they work continuously to neutralize bacteria, viruses, and mold spores. These systems use specific wavelengths of ultraviolet light that damage the DNA structure of microorganisms, rendering them harmless.

The effectiveness of UV systems extends beyond just killing germs. They also help maintain cleaner coils and drain pans in your HVAC equipment, improving system efficiency and reducing maintenance needs. Our comfort consultants can design UV light installations that target problem areas in your system, such as the evaporator coil where moisture creates ideal conditions for mold growth. This technology is particularly beneficial for commercial clients operating restaurants, medical facilities, or other businesses where air quality directly impacts customer health and satisfaction.

Humidity Control Solutions

Proper humidity levels are crucial for maintaining healthy indoor air quality. We install and service both humidifiers and dehumidifiers to keep your home’s humidity between the recommended 30-50% range. When humidity drops too low, it can cause dry skin, irritated sinuses, and increased susceptibility to respiratory infections. Conversely, excessive humidity promotes mold growth, dust mite populations, and creates an uncomfortable, sticky environment.

Our whole-house humidity control systems work in conjunction with your heating and cooling equipment to maintain optimal moisture levels automatically. These systems include:

  • Steam humidifiers that provide precise humidity control regardless of heating demand
  • Bypass humidifiers that use your furnace’s heat to add moisture efficiently
  • Whole-house dehumidifiers that remove excess moisture without overcooling your home

Comprehensive Indoor Air Quality Assessments

Before recommending any solutions, we conduct thorough indoor air quality assessments to identify specific problems in your home or business. Our trained technicians use professional-grade testing equipment to measure particulate levels, humidity, carbon dioxide concentrations, and volatile organic compounds. This data-driven approach ensures we’re addressing your actual air quality issues rather than applying one-size-fits-all solutions.

During assessments, we also inspect your existing HVAC system for issues that might contribute to poor air quality. This includes checking for duct leaks that can pull contaminants from unconditioned spaces, evaluating ventilation rates to ensure adequate fresh air intake, and examining system components for biological growth. Our 24/7 emergency service means we’re always available when urgent air quality concerns arise, protecting your family’s health around the clock.

Whether you’re dealing with persistent allergies, concerned about airborne viruses, or simply want to breathe cleaner air, we have the expertise and technology to improve your indoor environment. From servicing room air conditioners to installing sophisticated air purification systems in 200-ton industrial chillers, our team delivers solutions tailored to your specific needs and budget. Contact us today.

Your Comfort is Our Priority

Ready to Experience the Donahue’s Difference?

Don’t let another day go by with an uncomfortable home or unreliable HVAC system. For over 60 years, Donahue’s Heating & Cooling has been Greensburg’s trusted choice for expert HVAC solutions, emergency repairs, and comprehensive maintenance services. Our NATE-certified technicians are standing by 24/7 to restore your comfort and peace of mind.

Whether you need immediate emergency service, want to schedule routine maintenance, or are ready to upgrade to a more efficient system, we’re here to help. Call 724-261-3634 now or fill out our contact form to get started. As a Carrier authorized dealer with our own sheet metal fabrication shop, we have the expertise and resources to handle any HVAC challenge.

NATE-Certified Technicians Ready to Help
Quality service you can count on!
Three Generations of Excellence
See Why Greensburg Chooses Donahue’s

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Over 60 Years of Trusted Service
Customer Reviews
I wanted in-ceiling mini splits and Dave Donahue came to my home to create an estimate and he was extremely professional and knowledgeable. The price was reasonable. The job was done promptly and finished earlier than the time frame promised His team was excellent. They were neat and tidy and...
Kelly E.
Google Review
Just had my a/c get its checkup for the upcoming season and Jeremy from Donahue’s did an excellent job! He went the extra mile to make sure everything was done completely and thoroughly! Just started using Donahue Heating and Cooling and this was my second excellent experience.
Daniel C.
Google Review
We had Donahue’s clean our out vents and they did a fantastic job. Hunter, Tyler, Zack, and Kyle were all very respectful and were happy to answer any questions we had. I would strongly recommend using Donahue’s Heating & Cooling for your needs.
Anisa B.
Google Review
First time dealing with Donahue. We received a quote from Mark the same day he came to look at the job (amazing). After meeting with the other companies we contacted, we decided to go with Donahue’s. From estimates to office calls/visit, to the installation crew, we could not have been...
Scott M.
Google Review
Donahue’s service man was timely, courteous, professional very knowledgeable and answered my questions. He completed a thorough maintenance check of our furnace. I definately recommend Donahue’s Heating & Cooling. I will call them again in the future.
Susan F.
Google Review
We switched to electric heat in 2022 from oil. A new variable speed air handler was installed by a different vendor, using the 3 zone control system that this vendor had installed in 2004. However, the original zoning controller was not capable of optimally using the capability of the new...
Daniel A.
Google Review
Donahue’s was amazing to deal with! Huge thank you to Todd the technician who fixed our air conditioner! Very knowledgeable and informative. I would highly recommend Donahue’s!!
Alicia P.
Google Review
We could not be happier with the central A/C job that was done in our over 100 year old home. We were so worried about losing valuable space that we held off exploring this. Now we are asking ourselves why we didn’t do it sooner! The whole experience was professional....
Amy M.
Google Review
Called to have service as my HVAC Unit wasn’t blowing cold this spring. They got me an appt for 2 days later, and called me a day earlier to let me know a tech was available. It worked for me so Zach came out and replaced a capacitor on my...
Matt G.
Google Review
I have had Donahue’s provide Spring and Fall PM on both my heating and air conditioning units for a number of years. I am very impressed with both Dillon and Zach, who have performed the recent fall and spring PM visits. They were both very knowledgeable and courteous young men...
Ann P.
Google Review
My in-laws were having low air flow with their central air conditioning system and called Donahues to address it. They were immediately put on a wait list, but were seen the next day! Dan came out and did a thorough inspection inside, changed the filter, and then thoroughly checked the...
Victoria B.
Google Review
Donahue’s service is second to none! My tech, Dillon, was outstanding and very professional! Will definitely use them for future services. A+
Deb R.
Google Review
Great tech came to house to fix hvac Dillon was his name he explained everything it a way I could understand. He was very friendly and knowledgeable. If I need service again I will definitely be requesting him.
Brandon R.
Google Review
One coldest days of year and my furnace shutdown. I used Donahue’s for years so I called asap . They had Zack at my house with in a hour and solved my problems. Happy day for me, furnace running perfect again . Excellent tech and office were both kind people...
David L.
Google Review
I’ve used Donahue’s for a few jobs now, some small and some big, one was a full furnace replacement and I couldn’t be happier with the work they did for me. All their employees have been great, the latest was Rod, he replaced the gas valve on my hot water...
Andrew K.
Google Review
Dillon was our service tech, and did a great job on both service calls! He first did our furnace maintenance, where he was personable and efficient. He explained that we needed to replace our combustion tank, and quoted us on the spot. His second trip was to replace the tank...
Wendy V.
Google Review

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