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Comprehensive Heating Solutions for Every Property

Donahue’s offers reliable solutions for all your home heating needs, whether you rely on oil furnaces, gas furnaces, high-efficiency systems, or modern heat pumps. Our team helps you choose the best option for your home, focusing on comfort, energy savings, and long-lasting performance. From expert installation to dependable maintenance, Donahue’s ensures your home stays warm and efficient all season long.

Infinity® 98 Gas Furnace With Greenspeed™ Intelligence

The Infinity® 98 furnace delivers precision comfort with Greenspeed™ intelligence. This is the most advanced Carrier® furnace ever made. Its unique design innovations achieve unprecedented efficiency and quiet.

Greenspeed intelligence is created by pairing adaptable-speed technology with our Infinity control’s intelligence. The unique, modulating gas valve of this unit, when managed by the Infinity control, allows it to literally adapt its output to the needs of the home. With tiny, 1% adjustments between 40 and 100% capacity, it gives the home only the amount of heating necessary.

This allows the furnace to operate longer at steadier, lower capacities, which ensures incredible energy efficiency and quiet operation with tighter temperature control than standard furnaces.

Split systems

A split system simply means your solution has products that reside both inside and outside your home. In many cases, a split system consists of:

  • Furnace―provides heating and the fan used year round to circulate air
  • Evaporator coil―the indoor component of your outdoor cooling unit
  • Air conditioner or heat pump―works in tandem with the evaporator coil
  • Ducts―carry the conditioned air throughout your home
  • Control or thermostat―your interface for controlling your system
  • Optional air quality accessories―clean, humidify, and freshen air before it circulates throughout your home

Some split systems consist only of an outdoor unit―such as a heat pump or air conditioner―and an inside fan coil. If that’s the case, there’s usually another heat source in the home like baseboard heat or a boiler.

Hybrid Heat® split systems

It’s a smarter version of your standard split system, with an energy-efficient twist: In addition to gas furnace heat, this system automatically figures out how to get the best efficiency by also using an electricity-fueled heat pump to provide warmth. Bonus―the heat pump functions in the place of an air conditioner too.

In the warmer, humid climates of the south, you might consider a high-performance heat pump with lower efficiency and a lower upfront cost furnace so you can have the furnace as backup heating on really cold nights while taking advantage of the high-efficiency heat pump most of the year. A heat pump with a variable-speed compressor matched to a furnace with a variable-speed blower motor can do an amazing job of pulling humidity out of the air in the summer to save money.

Meanwhile, in colder climates, it’s best to pair your heat pump with a high-efficiency furnace. Despite the cold, you might be surprised by just how much mileage―not to mention cost-saving efficiency―you’ll get from a heat pump in the spring, fall, and, yes, even winter months.

A Hybrid Heat system includes:

  • Heat pump―provides summer cooling and dehumidification and warmth in cooler seasons
  • Evaporator coil―the indoor component of your outdoor heat pump
  • Furnace―provides heating and the fan used year round to circulate air
  • Ducts―carry the conditioned air throughout your home
  • Control or thermostat―your interface for controlling your system
  • Optional air quality accessories―clean, humidify, and freshen air before it circulates throughout your home

Ductless split systems

As you may have guessed from its name, a ductless split system doesn’t rely on air ducts to spread treated air in your home. Instead, this specialty system is designed to heat or cool room additions or other places that may lack ductwork, such as home theaters, exercise rooms, garages, or any other area where the existing system doesn’t quite cut it.

Ductless split systems include:

  • Small outdoor air conditioner or heat pump unit
  • A compact indoor wall unit
  • Refrigerant tubing and wire connections―pass through a small hole from indoor to outdoor unit to connect the system.
  • On unit or remote control―your interface for controlling your system

Geothermal Heat Pump System

Traditional heat pumps do the same thing as air conditioners but in winter, they do it in reverse, drawing their heat energy from the outside air. Geothermal heat pumps don’t have to rely on the potentially wide temperature swings of outdoor air. They tap into the relatively consistent and more moderate temperatures of the earth instead. Using your yard, pond, or well water, this ingenious technology enables you to enjoy higher energy efficiency inside your home—no matter how extreme the weather gets outside.

There are geothermal systems that can serve homes with ductwork or homes with radiant heat. The radiant heat versions are referred to as hydronic systems and some of those can also provide you with all your hot water needs.

A geothermal system can be used to provide all of your heating and cooling needs or you can pair it with a furnace for a dual fuel heating solution.

Packaged systems

Some homes just don’t have space inside for a furnace or the coil needed for cooling. That doesn’t mean they can’t be filled with the same comfort and improved air quality of a split system home.

Packaged units tend to all look alike but can do vastly different things:

  • Cool only as an air conditioner
  • Cool and heat as an electric heat pump
  • Cool and heat as a Hybrid Heat® dual fuel system of gas furnace with electric heat pump
  • Cool and heat as a gas furnace with electric air conditioner

As an all-in-one unit, the only other thing you need is a control or thermostat and, of course, ductwork to carry the conditioned air. Additionally, you can add air quality accessories if you like. Packaged systems may be located on the exterior of your home, either on a flat rooftop or in the yard.

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.

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Quality service you can count on!
Three Generations of Excellence
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Over 60 Years of Trusted Service
Customer Reviews
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
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
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
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
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
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
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
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
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
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
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
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
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 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

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