John Lock Air Conditioning & Heating Service

We specialize in furnace installation for residential and commercial properties. Our experienced technicians ensure efficient setup of high-quality heating systems. Clients benefit from upfront pricing and long-term performance guarantees.

Emergency and routine air conditioning repair services are available 24/7. Our certified technicians diagnose and resolve issues promptly. Customers appreciate our transparent diagnostics and durable fixes.

We install and maintain radiant heat systems using premium boilers. Our team ensures optimal warmth distribution in homes and businesses. Clients value our expertise in both new installations and system upgrades.

Ductless system installations provide energy-efficient climate control for specific areas. Our specialists handle both residential and commercial applications. Customers benefit from customized comfort solutions and expert aftercare.

We offer generator installation and maintenance for uninterrupted power supply. Our technicians work with leading brands to ensure reliable backup systems. Clients trust us for emergency preparedness and system longevity.

We provide furnace and air conditioning installation, repair, and maintenance, along with radiant heat systems, ductless mini-splits, and home generators.

Yes, we offer 24/7 emergency HVAC services for urgent heating and cooling needs.

Regular maintenance ensures system efficiency, extends equipment lifespan, and maintains manufacturer warranties.

Yes, we provide HVAC solutions for both residential and commercial clients across Western New York.

We accept major credit cards and checks. Payment options may vary based on service type.

We've served Buffalo and surrounding areas since 1967, with three generations of family leadership.

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

Prompt service call response! Courteous, knowledgeable technician and honest service! Focused on fixing the issue, not going overboard! Recommended! Service: Heating maintenance

From the first sales quote through installation the team at John Lock has been outstanding. We received 4 quotes before making a decision and not only was John Lock's quote significantly less, Chris in sales put the most effort into formulating his quote. He walked through our entire house, listening to questions and concerns we had from our old heating system and developed two different levels of options to go for.

He was never pushy, or trying to oversell. He took phone calls for multiple questions I had before deciding to go with them. When installation day came, Paul's team was punctual, polite and clean. They laid down cardboard to make sure their shoes didn't get mud on our hall floor. Paul took the time to explain everything from national fuel rebate and warranty to again going through each room to optimize airflow and performance. I would highly recommend the team at John Lock. From price to professionalism and quality of service, John Lock is top notch.