We’ve been serving South Hills area homeowners and businesses for four decades and still treat every service call like our future depends on it. To our way of thinking – it absolutely does. Timely response. Reliable work. Eager-to-please professionals. Taking care of your comfort goes smoother with Denillo Heating & Cooling.

System Installations/Replacements

Whether you are building a new home or place of business or upgrading to a more efficient cooling or heating system, the Denillo team is your proven pros for residential and commercial HVAC installation in Pittsburgh’s South Hills area. We can show you options from Trane’s leading lines of air conditioning and heating equipment, with system choices that feature a capacity, efficiency and price to suit your needs. All new systems include cooling, heating, air cleaners, thermostats and accessories.

Service & Repair

We believe that quick response and precision work never fail to impress. You’ll see them both when you hire us for help. If you’re sweating a possible repair to your cooling or heating system, the Denillo team will put your promptly at ease. We’ll assess the situation when we arrive at your home or business, diagnose the problem, and fill you in on the options. Our easy-to-talk-to technicians use top-quality replacement parts to fix the immediate problem and quickly return you to normal. We won’t push anything you don’t need or overcharge for what you do need. Instead, we pride ourselves on recommending what does the job at a fair price.

Indoor Air Quality and Duct Work

Denillo Heating & Cooling offers complete residential and commercial air duct cleaning services to help improve air quality and remove dust, pollen, mold spores and more. We can even test your indoor air quality while we are doing your maintenance and cleaning. Our technicians have been trained to take surface mold samples to ensure that your home has the cleanest air possible. And if you need duct work design assistance, we can create the ideal configuration for your specific comfort system.


A leak, a noise, a change in performance – new issues can be signs of bigger problems to come. Before Pittsburgh’s extreme summer and winter weather takes hold each year, it is a good idea to have your cooling and heating system checked out by one of our maintenance experts. We will conduct a thorough inspection and cleaning of your equipment to improve performance and avoid costly breakdowns. And if you sign up for a Denillo annual Preventative Maintenance Agreement, we’ll keep your system running efficiently, extend the life of the equipment, and save you money on repairs year-round. Click here for details.

Have a question or need service? Please don’t hesitate to be in touch! Call us at (412) 885-2356.