John Lock Air Conditioning and Heating Service

Furnace installation services ensure efficient heating for residential and commercial properties. Our experienced technicians handle complete system setup, guaranteeing optimal performance and energy savings. Customers benefit from personalized consultations, quality workmanship, and a 100% free no-obligation estimate before any work begins.

Central air conditioning installation and repair services provide year-round comfort. With systems designed for efficiency and durability, we prioritize customer needs through upfront pricing, prompt service, and expert maintenance to extend system lifespan and ensure maximum performance.

Ductless mini-split systems offer versatile heating and cooling for spaces without existing ductwork. Our technicians install and service these systems with precision, ensuring energy efficiency, seamless integration, and tailored climate control for homes and businesses in Western New York.

Home generator installation ensures power continuity during outages. We offer Generac, Carrier, and GE models, accompanied by emergency repair services and expert setup. Customers enjoy peace of mind with reliable backup systems supported by our 24/7 emergency response capability.

Air filtration systems improve indoor air quality through dehumidifiers, humidifiers, and purifiers. These solutions address mold, allergens, and dry air issues, providing healthier environments. Installation and maintenance services ensure optimal system function and long-term comfort for residential and commercial clients.

We serve Buffalo, NY and the Greater Buffalo Area, including residential and commercial properties across Western New York.

Yes, our emergency service is available 24/7 to address urgent heating and cooling needs.

We offer Silver and Gold Club memberships with priority service, annual tune-ups, discounts, and reduced service fees for HVAC maintenance.

Call 716-894-6400 to schedule service or request a free estimate during regular business hours (Mon-Fri, 8 AM–4:30 PM).

We install and service Lennox, Amana, Generac, Carrier, Mitsubishi, and other trusted HVAC brands for quality and reliability.

My entire experience with John Lock Heating and A/C was fantastic from start to finish. The estimate process from Mike was honest and straight forward. He made solid recommendations in the replacement of my furnace and air conditioning and explained the process clearly. He didn't try to oversell me equipment I didn't need. Pricing was competitive. The receptionists on the phone are also very friendly.

On installation day, Paul, the head foreman, and his crew were pleasant and highly professional. They were competent, knowledgeable and efficient. Again, they explained the installation process and all 3 installers were neat and meticulous. My previous units were installed by them--the A/C as long as 34 years ago. Amazing they lasted that long. What's more is that most of the employees have been working for the company for at least a decade--some for over 30 years. That says a lot about the company. I couldn't be happier with my new Lennox furnace and A/C from John Lock, and I highway recommend them.

I've dealt with John Lock for many years. For instilation and repair. Friendly, thorough and reliable. Always explains what they are doing. Show you old parts. Very honest.

Seriously has bailed us out 3 times in 2 years. They always came quickly and are super affordable. Techs have been amazing also. In and out and are kind. Thanks again guys.

Friendly, fair prices, honest answers to help the home owner spend and save money where needed. Great experience