Keeping Comfort In The Family

Ask enough people in Pittsburgh’s South Hills area who they trust for cooling and heating and you’ll start to notice a pattern: “Denillo Heating & Cooling.” That’s what happens when you’re a family-owned, second-generation business with four decades of making people happy.

From the high standards of founder Guy Denillo – “The Only Guy To Call®” – to the leadership of son Nick, the Denillo Heating & Cooling team is at your service, striving for excellence and total customer satisfaction. Our technicians, installers and support staff go the extra mile to make your residential or commercial air conditioning project a positive experience that produces unsurpassed results.

Energy-efficient comfort, lower cooling and heating costs, clean indoor air, and fair prices – you can have it all with Denillo Heating & Cooling. We wouldn’t want to settle for less and we don’t expect you to!

Making your home or workplace more comfortable is always the highlight of our day. For better air from people who care, call Denillo Heating & Cooling, Inc!

Honest, Reliable Repairs

Our Repair Approach: We only fix what needs fixing, adjust what needs adjusting, and replace what needs replacing.

Valuable Insights

We’re always happy to share what we know so you can make informed decisions about indoor comfort. Ask us anything.

Convenient Financing

No need to postpone your comfort. Apply for a new heating and/or new air conditioning system that soothes you and your budget.

“The Only Guy To Call®”

What Our Valued Customers Are Saying

“Thank you for everything.”

- Catherine M.

“Your company is very professional.”

- Larry K.

“I am very satisfied with Denillo Heating.”

- Betty G.

“All of you are truly wonderful. Thank you so very much!”

- Kim S.

“I shared your excellent work on my Facebook page.”

- Nancy C.

“Very good people working for your company”

- Debbie M.

Excellent company, Guy is wonderful!”

- Jeff Y.

“Great Work!”

- Chris H.

“Guy, your son is a real gentleman. Be proud.”

- Ronald H.

“Whenever I need anything you are the one I’ll call. They were very much on time and done in no time.”

- John E.

“Thank you so much! We are so glad we called you.”

- Richard Y.

“All businesses should be run like Denillo Heating & Cooling. Guy, you have a business & employees to be proud of.”

- Tony M.

“I couldn’t have been happier. Your company was wonderful to work with. The technicians were awesome and informative. I have already recommended you to my family & friends. Thank you so much for your help.”

- Helen B.

“You are wonderful people & I would recommend you again & again.”

- Deena M.

“Many, many thanks”

- Paul & Christine L

“Very happy with everything.”

- Rebecca O.

“Nick was so good!”

- Betty J.

“Nicholas was so personable, polite, and professional! An asset to your company!”

- Christopher H.

“Tell Guy – do not ever let those two guys go!”

- Robert H.

“Your emergency service for our rental property was excellent. Thank you so much!”