Cornerstone Heating and Cooling LLC

Hours

Weekly hours are listed below.

MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours

From Google, checked May 2026.

Celebrating 75 Years Being Summit, NJ Plumbers, HVAC Technicians, and Generator Contractors

From the business Google listing

Stashluk Plumbing, Heating, Air Conditioning, and Generators 2 provides trusted HVAC services in Haledon, specializing in heating, cooling, and generator solutions for both residential and commercial clients. With a focus on customer satisfaction, their experienced team offers expert installation, maintenance, and repair services to ensure systems run efficiently year-round. Whether it's installing a new air conditioning unit, repairing a furnace, or providing emergency repairs, Stashluk Plumbing, Heating, Air Conditioning, and Generators 2 guarantees fast, reliable, and affordable services. Their technicians are committed to delivering high-quality solutions that extend the life of your HVAC systems.

From the business's Google listing, checked Oct 2026.

What this listing mentions

  • Small business
  • Installation service
  • Repair service
  • On-site services
  • Online estimates

From the business's Google listing, checked Oct 2026.

Google Reviews

5.0 (35) Google Reviews

Ratings as of October 2026. See this business on Google

excellent

5 out of 5 Jerico A.

Luis & team are awesome! My AC went out during one of the hottest weeks of the year. I called a few places before Cornerstone, and was told I'd have to wait at least a week for a new unit. I gave Luis a call, and within two days I had a brand new AC & furnace installed for a fair price.

5 out of 5 Peter H.

Had some heating issues with my HVAC system. Called these guys on Saturday night and they were available to assist and send somebody out immediately. Very professional team. We were very happy with their service and would definitely use them again!

5 out of 5 Larry B.

These quotes come from Google Reviews and belong to their authors.